Department of Earth and Space Sciences – UW News /news Wed, 10 Jun 2026 21:05:32 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 UW faculty and researchers recognized with ACLS Fellowship, Beckman Fellowship and Humboldt Award听 /news/2026/06/10/uw-faculty-and-researchers-recognized-with-acls-fellowship-beckman-fellowship-and-humboldt-award/ Wed, 10 Jun 2026 21:05:32 +0000 /news/?p=92146
Recent recognition of the 糖心原创 includes ACLS Fellowship, Beckman Fellowship and Humboldt Award听

Recent recognition of the 糖心原创 includes American COuncil of Learned Societies Fellowship, Arnold O. Beckman Postdoctoral Fellowship and Humboldt Award from Alexander von Humboldt Foundation

Assistant professor awarded 2026 ACLS Fellowship

, assistant professor in the Department of Asian Languages & Literature at the UW, was awarded a 2026 ACLS Fellowship from the American Council of Learned Societies. The fellowship recognizes excellence in humanities and social sciences research and supports scholars whose work is poised to make original and significant contributions to their fields.听Rominger听will be the 2026 ACLS Pauline Yu Fellow.听

It means a great deal to hold a fellowship in Pauline Yu’s name,鈥 Rominger said. 鈥淗er scholarship on Chinese poetics is part of why I do this work.”

This year, the program awarded more than $3.5 million to 63 scholars selected from a pool of more than 2,000 applicants.

Rominger specializes in early Chinese literary and intellectual history. His project, 鈥淎urality and the Search for Sound and Meaning in Early Chinese Texts,鈥 examines how sound-based patterning听shaped meaning in early Chinese听philosophical texts, particularly in听writings听from the Warring States period to the Han dynasty.听

Rominger鈥檚 research shows how early Chinese thinkers employed the sound of language not only for style but also to build arguments and express complex ideas. The project brings together close readings of ancient texts, historical reconstructions of Old Chinese pronunciation, and computational tools to offer new insight into the relationship between literary form and philosophical thought.

Postdoctoral scholar awarded Arnold O. Beckman Fellowship in Chemical Instrumentation

, a UW postdoctoral scholar听in听chemistry, was awarded the Arnold O. Beckman Postdoctoral Fellowship in Chemical Instrumentation. The fellowship supports advanced research by postdoctoral scholars in fundamental chemistry and the development and construction of chemical instrumentation.

The award provides two years of funding, along with an听additional听$200,000 budget to support instrumentation costs.

With the fellowship, Rebstock will build a new vibrational spectroscopy instrument designed to听observe听chemical reactions as they happen at surfaces. The instrument will allow researchers to see how molecules move and interact in real time, offering insight into surface chemistry that could help improve technologies such as batteries and clean fuels.

This fellowship provides Rebstock with a rare opportunity to combine instrument development with fundamental chemistry questions. I鈥檓 excited to pursue both and to explore new ways of probing the chemistry that happens at interfaces.鈥 Rebstock said.

UW researcher receives Humboldt Research Award

a UW professor of Earth and space sciences,听received a Humboldt Research Award from the Alexander von Humboldt Foundation. The award recognizes internationally leading researchers across all disciplines for their academic record and significant contributions to their fields.

Each year, the Alexander von Humboldt Foundation grants up to 100 Humboldt Research Awards to researchers from abroad. Awardees receive personal award听money and听are invited to carry out research projects of their听choosing听in cooperation with specialist colleagues in Germany.

Teng said he was deeply honored by the recognition and grateful to Professor听Harry听Becker, head听of the Geochemistry Group at听FU-Berlin, for听the nomination. The award will allow听Teng听to spend extended periods over the next few years conducting research at Freie University Berlin, beginning with his听sabbatical this听summer.

鈥淚t is a wonderful opportunity to spend extended periods over the next few years conducting cutting-edge research at Freie University Berlin,鈥 Teng said.

The award will also enable Teng to develop new collaborations across Germany and become part of the Humboldt Foundation鈥檚 international network of distinguished researchers.

 

]]>
With ShakeAlert installations complete, researchers explore offshore expansion /news/2026/06/04/with-shakealert-installations-complete-researchers-explore-offshore-expansion/ Thu, 04 Jun 2026 18:34:12 +0000 /news/?p=92045 a crew stands near seismic instruments on the right side of the frame against a backdrop of forest and mountains.
This seismic monitoring station, installed in August 2025 atop Burley Mountain in the Gifford Pinchot National Forest, was one of the last added to the network. Photo: 糖心原创

The ShakeAlert earthquake early warning system has been rapidly expanding since its launch in 2021. Now, researchers at 糖心原创 affiliated Pacific Northwest Seismic Network (PNSN) have finished all planned installations, bringing the two-state total to spread across Washington and Oregon.

ShakeAlert detects ground motion from earthquakes before it is felt, giving people precious time to drop, cover and hold on. An earthquake exceeding magnitude 5 will trigger an automated cell phone alert from the , or WEA, which also sends AMBER alerts. Millions of people benefit from the network as is, but the researchers are still exploring ways to improve it.

鈥淲hen we launched ShakeAlert, we felt confident that we had enough seismic stations to do a good job with early warning, but that wasn鈥檛 the optimal number. Now, with the buildout complete, we have coverage where it was lacking at launch,鈥 said , director of PNSN and a UW professor in Earth and space sciences.

However, expanding the network to include sensors on the ocean floor could help Pacific Northwest residents contend with the area鈥檚 greatest hazard 鈥 the Cascadia Subduction Zone.

The West Coast is a hotbed for seismic activity. Nestled in the , an array of volcanoes circling the Pacific Ocean where 90% of Earth鈥檚 quakes occur, the region鈥檚 volatile geology clashes with its growing population. Early warning systems can give people seconds to minutes of time to prepare for shaking, and a sense of how strong it will be.

Just over a year ago, a midsized earthquake under Orcas Island offered ShakeAlert in Washington. Multiple seismometers in the area picked up the signal and ran it back to headquarters for verification. The earthquake wasn鈥檛 quite big enough to trigger a WEA automated alert, or cause major damage, but in the affected region it did notify people听with early warning apps such as MyShake, as well as all Android mobile devices.

PNSN has been adding seismic monitoring stations for decades, although the system went live in 2021, the planned installations weren鈥檛 finished until 2026. New stations are represented by red dots in the graphic. PNSN

鈥淭he system detected the earthquake rapidly, accurately assessed its magnitude and automatically sent out a warning 鈥 all in a handful of seconds,鈥 said Tobin. 鈥淚t was the first event that met all the criteria in Washington and it worked really well.鈥

During a larger earthquake, warnings will be automatic no matter the app or operating system. Warnings will also trigger certain public safety measures: Schools can connect PA systems to ShakeAlert for rapid updates, public transit may slow trains to avoid derailment and fire station doors will go up to allow firetrucks out even if electricity is lost.

Right now, the system is most effective for land-based earthquakes because the sensors are on land. Expanding the sensor network to include offshore, ocean bottom seismometers could improve detection and warning time for offshore earthquakes, namely a much-anticipated megathrust earthquake at the Cascadia Subduction Zone.

鈥淭he fundamental problem we have is that our seismic network 鈥 hundreds and hundreds of stations 鈥 is on land, but the biggest earthquake hazard comes from off our coast,鈥 Tobin said. 鈥淓arthquake detection works much better when the earthquake is in the area of your network, not off to one side.鈥

Seismometers can be placed on the ocean floor, but they must be connected to cables for early warning, which is expensive. Japan installed an impressive that cost $120 million following the devastating 2011 earthquake. The country now has more than 200 seismometers covering its subduction zones.

The Cascadia Subduction Zone has a handful of existing offshore sensors 鈥 five near Vancouver Island and two off the coast of Oregon. A UW-led project this summer to the Oregon cable, which spans hundreds of seafloor miles, crossing the subduction zone twice. None of the offshore sensors are in the ShakeAlert network, but adding them could be impactful.

, a UW postdoctoral researcher in Earth and space science, recently at the Seismological Society of America鈥檚 annual meeting detailing the potential benefits of adding offshore seismic monitoring.

Krauss found with modeling that incorporating just a few ocean bottom sensors improved detection time for offshore earthquakes and warning time for millions of people. In hypothetical earthquake scenarios, the sensors picked up ground motion faster and improved magnitude estimates because they were closer to the fault.

鈥淪hakeAlert is all about figuring out that an earthquake is happening as fast as possible, so having sensors nearby is essential,鈥 Krauss said. 鈥淏ut in these magnitude 8 or 9 scenarios, it’s not just about detecting it, but realizing how big it is, and fast.鈥

The researchers also explored incorporating telecommunications cables into the sensor network using a method called distributed acoustic sensing (DAS), which records ground motion based on cable stretch. Incorporating DAS could extend the reach of existing cables even further than sensors, translating to 鈥渉uge warning time improvements,鈥 Krauss said.

Different combinations produced varying improvements in both detection and warning time, depending on where the hypothetical earthquake occurred. Regardless, having sensors always beat not having them. While there are several hurdles to clear before ocean bottom sensors can be brought into ShakeAlert, Krauss said none are insurmountable.

鈥淎lthough we鈥檝e marked this milestone of completing our station buildout, that doesn’t mean we鈥檙e not continuously improving the ShakeAlert system,鈥 Tobin said. 鈥淲e鈥檙e working to make it faster, better and more reliable.鈥

For more information, contact Tobin at htobin@uw.edu and Krauss at zkrauss@uw.edu.听听

]]>
May research highlights: Rapid river migration, bean plant defense, tiny tensegrities, more /news/2026/05/28/may-research-highlights-rapid-river-migration-bean-plant-defense-tiny-tensegrities-more/ Thu, 28 May 2026 19:59:39 +0000 /news/?p=91919 How bean plants sense very hungry caterpillars and call for backup
When bean plants sense a caterpillar eating their leaves, they release gases that invite predatory wasps to help defend them. Shown here are two different species of predatory wasps attacking a caterpillar on a bean plant. Photo: Brian Behnken/糖心原创

Plants may not appear aggressive, but they can still defend themselves while under attack. When caterpillars chomp the leaves of bean plants, these plants release gases that lure predatory wasps. The wasps prey on the caterpillars, saving the plants from further destruction. In a paper , a UW-led team demonstrated that this defense strategy is run by a protein called INR, or inceptin receptor. The researchers grew bean plants with naturally occurring mutations in the INR gene alongside plants with functional INR in an experimental field in Oaxaca, Mexico. The knock-out plants didn’t emit gases and attracted far fewer wasps. This result helps explain a previous study by this team that first identified the biochemical pathway behind this defense mechanism. These results also showcase how the tiny actions of a single protein can affect the behavior of wasps and caterpillars, and in turn, protect the health of the plant. This could benefit nearby plants as well, the researchers said. Beans are often grown alongside “,” such as corn, with the idea that each plant provides a benefit for the others. Beans help make the soil richer for their companions, and, through the actions of INR, could also protect their neighbors from pests.

For more information, contact senior author , UW associate professor of biology, at astein10@uw.edu.听听

The other UW co-authors are , , , and . A full list of co-authors and funding is included .


Decades of satellite data show Himalayan rivers migrating rapidly in response to climate change

The movement of rivers is often described in terms of flowing water, but the path a river takes can also change. Some migration is normal, but in the Himalayas, rivers seem to be scrambling faster than scientists anticipated. In a study , researchers show that rivers in the Tibetan Plateau moved twice as much from 2000 to 2020 as they did from 1980 to 2000. As glaciers melt and frozen ground thaws in response to rising temperatures, rivers are inundated with silty meltwater from surrounding glaciers. The water picks the path of least resistance through softening ground. The 鈥渕ovement鈥 includes small lateral shifts, big swings that cut off entire sections of river and occasionally, . The international team attributes their observations to climate change, which is driving temperatures up faster here than many other places. More than 2 billion people rely on these rivers for fresh water and researchers are concerned about communities downstream, as well as the potential for similar patterns that may play out elsewhere.

For more information, contact co-author , UW professor of Earth and space sciences at bigdirt@uw.edu.听听

A full list of co-authors and funding is .


Researchers shrink eye-catching structure down to the nano scale

Researchers 3D printed tiny tensegrity-inspired structures and then shrank them even further through a heating process, creating lightweight 鈥渘anotensegrities鈥 that are up to 250% stiffer than the original structures. Photo: Amitha R. Mulastham/UW Molecular Analysis Facility

made using a network of freestanding bars suspended by a web of thin, tense cables. The organization of the bars and cables allows the network of tension and compression forces to lock everything into place, creating a lightweight yet stiff structure. Tensegrities of different sizes are common in nature 鈥 examples include and the that help living cells maintain their shape 鈥 as well as in diverse manmade structures like , and . Now, a team of engineers at the UW have found a way to create tensegrities as small as five micrometers across 鈥 roughly a tenth of the width of a human hair. in the aptly-named journal Small, researchers used a specialized and a resin compound to print bar-and-cable structures about 30 micrometers across. They then heated the materials to 900 degrees celsius, causing the structures to shrink by over 80%. As they shrank, the thinner cables constricted more than the bars, resulting in nanostructures with specific, locked-in levels of stress that were up to 250% stiffer than the starting structures. The team is now working on ways to build larger materials composed of tiny tensegrities, which could eventually usher in a new class of stiff, light and impact-resistant materials.

For more information, contact lead author , a UW doctoral student of mechanical engineering.

Other UW co-authors are , , Zainab S. Patel, , and . Funding information is included .听


Scientists find a key water source for atmospheric rivers

In December 2025, brought a seemingly endless onslaught of precipitation to Washington that caused and washed away roads and homes. In published in the Journal of Geophysical Research: Atmospheres, UW researchers help explain where all that water came from. They describe a link between the , a weather pattern that brings moisture east across the Pacific, and atmospheric rivers. Hypotheses about this connection have emerged from previous studies, but researchers couldn鈥檛 physically draw it until now. By tracking precipitation and wind patterns from 2000 to 2024, the UW researchers show that heavy rainfall and flooding are more likely when MJO is active, which happens several times a year. By identifying the MJO as a key moisture source for powerful atmospheric rivers, the researchers hope to improve forecast accuracy and give people more lead time to prepare for incoming storms.

For more information, contact co-author , UW professor of atmospheric and climate science at shuyic@uw.edu.

Other UW co-authors are and . Funding information is .

]]>
Near-miss tsunami in Alaska during tourist season last year highlights increasing environmental instability /news/2026/05/06/near-miss-tsunami-in-alaska-during-tourist-season-last-year-highlights-increasing-environmental-instability/ Wed, 06 May 2026 21:17:51 +0000 /news/?p=91642 A bare chunk of rock on the hillside adjacent to the water shows where the land slid into the fjord to generate the tsunami.
A rocky island with one tree standing, once covered in trees but stripped bare by the tsunami.
A mountain on the opposite side of the landslide showing where the wave cleared vegetation on the surrounding slopes.

Some Alaska cruises are to this year after a landslide-generated tsunami barreled through the narrow channel during peak season last August. A new analysis of the event from researchers at the University of Calgary and the 糖心原创, , describes how glacial retreat caused by global warming primed the fjord for the colossal wave and what, if any, warning signs preceded it.

At 5:26 a.m. on Aug. 10, 2025, a piece of the mountainside one kilometer tall and 200 meters thick collapsed into the Tracy Arm Fjord, a scenic waterway south of Juneau. Rock crashed into the water, taking with it chunks of the South Sawyer glacier and producing a 481-meter high tsunami so powerful that it scraped surrounding hillsides bare.

The event would have been “unsurvivable for any ship of any size,鈥 said co-author a UW professor of Earth and space sciences, but fortunately the tsunami occurred too early for tours and no one was harmed.

Later that day, as many as 20 boats, including large cruise ships, may have visited the fjord. Tourist vessels often draw near the fjord wall to get the best vantage point for photographs of towering glaciers and mountains. The slope that failed was only recently exposed to the water below it due to glacial retreat.

鈥淚t was only in the last few years that the glacier retreated back past the bottom of where the hillside failed,鈥 Roe said.

Tracy Arm Fjord hosts two glaciers, the Sawyer and South Sawyer, which both stem from the , a frozen expanse spanning the Alaska-British Columbia border. The larger South Sawyer glacier terminates in the water, making it a tidewater glacier, while the Sawyer retreated onto land in 2023.

Satellite observations indicate that the ice has retreated nearly 10 kilometers since the beginning of the industrial era, with the pace accelerating after 2000.

Before-and-after satellite imagery showing locations and extent of the Aug. 10 landslide and progression of glacial retreat since 1979. On the right, the white line shows the landslide area and the yellow on the opposite bank shows tsunami runup. Photo: Planet Labs

Mapping the change in position and mass of a tidewater glacier can be difficult because they shrink in multiple directions. Exposed ice melts in the sun and chunks break off and fall into the water at the glacial front. Glaciers around the world have been retreating in response to global warming, but tidewater glaciers don鈥檛 always follow general trends.

To understand the link between global warming and the 2025 tsunami, researchers used a computational method developed by Roe and , a UW research scientist in Earth and space sciences. Their approach combines hundreds of simulations from various computer models to estimate how different certain climates would look without human influence.

鈥淲ith these data, we can quantify how unusual the observations are compared to the expected natural variability in the climate had we not been burning fossil fuels,鈥 Berdahl said.

In the study, they conclude that 100% of the industrial-era warming in this region of Alaska is human-caused. As it gets warmer, less snow accumulates and the ice retreats.

鈥淪nowline elevations are rising, ice is thinning, and the ice cap is shrinking. Even though tidewater glaciers can be more complicated to study, we are fully confident that the retreat is primarily due to the changing environment, and we are the cause of the changing environment,鈥 Roe said.

It is possible that glacial retreat destabilized the slope that failed, but specific landslide triggers are notoriously difficult to discern. Either way, if the surface beneath the slope had been glacial ice, the slide wouldn鈥檛 have produced such a massive tsunami.

Although no one was harmed by the wave, those nearby raised the alarm. Kayakers awoke early in the morning to water flowing past their tents and carrying away some of their gear. A cruise ship anchored near the mouth of the fjord described large waves rolling through and shifting currents. These reports allowed researchers to triangulate the landslide, but the authors say there were very few advance warning signs.

鈥淣ormally with these gigantic rock avalanches, they often give some sort of warning signs in the weeks, months or years prior when the slope is slowly moving down the mountain. It鈥檚 sagging and then it catastrophically gives way in a rock avalanche,鈥 said lead author , associate professor of Earth, energy and environment at the University of Calgary. 鈥淚n this case, that didn鈥檛 happen.鈥

The researchers did note an increase in low frequency seismic noise before the landslide.

鈥淭he long precursory phase of seismic activity before the landslide is fascinating, and to my knowledge, rarely observed,鈥 said , a UW professor of Earth and space sciences. 鈥淕iven its duration and the relative ease of detection, this type of signal could conceivably provide advance warning of large slides if enough seismic monitoring can be deployed.鈥

Until that happens though, it will be difficult to predict the behavior of changing terrain.

The unexpected event presents challenges when it comes to disaster reduction in high-risk areas, Shugar said. Cruise ship companies, captains and other stakeholders should pay close attention, particularly in areas on the West Coast and in polar regions where glaciers are thinning due to the changing climate.

This study was funded by Natural Sciences and Engineering Research Council, Alberta Innovates, Canadian Space Agency, U.S. Geological Survey Landslide Hazards Program, the U.S. National Science Foundation, NERC, the Eric and Wendy Schmidt Foundation, and the Carlsberg Foundation.

This story was adapted from

For more information, contact Roe at groe@uw.edu.听

]]>
April research highlights: Sunbird tongues, Seattle fault, inbound asteroids, more /news/2026/04/28/april-research-highlights-sunbird-tongues-seattle-fault-inbound-asteroids-more/ Tue, 28 Apr 2026 16:07:03 +0000 /news/?p=91471 Sunbirds use their tongues as straws

The team took high-speed video of sunbirds drinking from transparent artificial flowers. Shown here are two views 鈥 a macro video of the sunbird drinking (top) and a close-up of its tongue inside the “flower” (bottom). The nectar in these flowers is dyed red so that it’s easy to see it going into the birds’ tongues. Credit: Cuban et al./Current Biology

Sunbirds may look similar to hummingbirds 鈥 small, iridescent birds with thin bills 鈥 but it turns out the two are only distantly related. Sunbirds live primarily in Africa, Asia and Australia, and have a unique way to slurp up nectar. Unlike hummingbirds, which use minute movements in their bills to sip nectar, sunbirds use their tongues as a straw. published in Current Biology, a team led by researchers at the 糖心原创 showed that these long-billed birds can change the pressure at the base of their tongues to create suction that moves nectar through their tongues and into their mouths, a novel mechanism never before seen in vertebrates. The researchers used multiple techniques 鈥 including high-speed video of sunbirds drinking red-dyed nectar from transparent artificial flowers 鈥 to demonstrate this phenomenon across multiple sunbird species as well as build a mathematical model that describes how it works. Sunbirds pollinate the flowers they drink from, and researchers are interested in understanding how different sunbird species’ plant preferences affect the plant-pollinator networks across continents.

For more information, contact lead author , who completed this research as a UW doctoral student in biology, at david_cuban@brown.edu.听听

The other UW co-author is . A full list of co-authors and funding is included . Related stories in and .听


Seattle Fault gets 5,000 more years of sleep听

Just over 1,100 years ago an on the Seattle fault rocked 鈥 and reshaped 鈥 the Puget Sound region. It lifted the sea floor and sent a powerful tsunami through the sound. Researchers have estimated that this fault, which runs east to west beneath the middle of the city, will produce a large earthquake every 5,000 years or so. However, , recently published in Geology, pushes that estimate back to 11,000 years. The researchers extended this window by scouring submerged shorelines for evidence of significant elevation changes. The geological record at these sites dates back 11,000 years, but they only found evidence of one major earthquake. This information could be useful to those making seismic hazard maps, which help people understand the risks associated with different regions. Although other regional faults and the imposing pose more imminent risks to residents, the main Seattle fault doesn鈥檛 appear to be ready for rupture anytime soon.

For more information, contact lead author , UW research scientist of Earth and space sciences, at edav@uw.edu.

The other UW co-author is . A full list of co-authors and funding is included in the paper. Related story in .


The PNW has many rivers, but no system for gauging landslide dam risk

This landslide occurred in December 2025 within the study area. It destroyed multiple houses and crashed into the Siletz river, partially blocking but not damming it. This work was motivated by concerns about similar landslides damming narrower sections of the river. Photo:

Scientists have a new tool for estimating lesser known hazards in the Pacific Northwest: and outburst floods. Landslides along rivers can block the flow of water downstream, creating a lake just above the slide area. Most landslide dams fail within 10 days, releasing trapped water in an outburst flood, which can be devastating. Last fall, 20 people died after in Taiwan. published in Natural Hazards and Earth System Sciences, UW researchers debut a mathematical approach to mapping landslide dam hazards based on valley width and projected slide size. When they applied the tool to a mountain range in Oregon, they found that roughly one-third of rivers in the study area were susceptible to landslide dams, with risk increasing in mountainous areas. If a landslide dam does form, alleviating pressure by for water to escape can help prevent flooding. Identifying high risk areas can help guide emergency response efforts following storms, earthquakes and other events that increase landslide risk.

For more information, contact lead author , UW doctoral student of Earth and space sciences, at pmmorgan@uw.edu.

The other UW co-author is . A full list of co-authors and funding is .


Rubin observatory expected to spot many 鈥榠mminent impactor鈥 asteroids

Small asteroids 鈥 those 1 to 20 meters in diameter 鈥斕 hit the Earth 35-40 times per year, though they鈥檙e very rarely spotted by telescopes before impact. That could soon change: published in The Astrophysical Journal, UW astronomers calculate that the Simonyi Survey Telescope at the NSF-DOE Vera C. Rubin Observatory could discover one to two Earth-impacting asteroids annually , roughly doubling the number currently logged. The researchers expect Rubin to discover these asteroids an average of 1.5 days before impact, which is more warning time than ever before. Advance notice is extremely valuable in the case of larger asteroids that could be a threat to people or infrastructure. Because the Rubin Observatory is located in the Southern Hemisphere, it will likely discover many Earth impactors that existing asteroid surveys 鈥 concentrated in the Northern Hemisphere 鈥 miss.

For more information, contact lead author Ian Chow, a UW graduate student of astronomy, at chowian@uw.edu.

Other UW co-authors are Mario Juri膰, Joachim Moeyens, Aren N. Heinze and Jacob A. Kurlander. A full list of co-authors is included .


Many marine microbes share a genetic toolbox for fixing supper at sea

The various shapes shown in the circle are phytoplankton, from the Strait of Juan de Fuca, under a microscope. Most species pictured are diatoms, many of which likely produce homarine. Photo: Anitra Ingalls

Researchers have now identified a set of genes that allow some bacteria to process a compound, called homarine, that is abundant in the ocean and appears to play a key role in nutrient cycling. Phytoplankton produce loads of homarine, but scientists weren鈥檛 sure what became of it until now. In a recent study published in Nature Microbiology, researchers found a set of genes present in common and far-flung bacteria that convert homarine into glutamic acid, an essential building block for life. This suggests that homarine may be a vital and overlooked resource and highlights the importance of bacteria in stabilizing marine ecosystems. Previous studies also found that homarine serves as and helps small crabs . The UW team will continue studying homarine to better understand how it fits into the broader ecological landscape.

For more information, contact senior author , a UW professor of oceanography, at aingalls@uw.edu.听

The other UW co-authors are , , , , , and 听 A full list of co-authors and funding is

]]>
Planets need more water to support life than scientists previously thought /news/2026/04/15/planets-need-more-water-to-support-life/ Wed, 15 Apr 2026 14:02:48 +0000 /news/?p=91326
This image of Venus taken by NASA鈥檚 Mariner 10 spacecraft (left) is paired with an artist’s depiction of three possible atmospheres on a recently discovered exoplanet, Gliese 12b. This new 糖心原创 study explores how much surface water a planet needs to support life. Photo: NASA/JPL-Caltech/R. Hurt (Caltech-IPAC)

Unfortunately for science fiction fans, desert worlds outside our solar system are unlikely to host life, according to new research from 糖心原创. Scientists show that an Earth-sized planet needs at least 20 to 50% of the water in Earth鈥檚 oceans to maintain a critical natural cycle that keeps water on the surface.

Scientists believe that there are billions of planets outside our solar system. More than are confirmed, but only some of them are candidates for life. The search for life has focused on planets in the 鈥,鈥 a sweet spot that is neither too close nor too far from a central star. Planets in this zone are considered viable because they can maintain liquid surface water.

鈥淲hen you are searching for life in the broad landscape of the universe with limited resources, you have to filter out some planets,鈥 said lead author , a UW doctoral student of Earth and space sciences.

Water, although essential, does not guarantee the existence of life. With this study, researchers worked to further narrow the search by investigating planets with just a small amount of water.

鈥淲e were interested in arid planets with very limited surface water inventory 鈥 far less than one Earth ocean. Many of these planets are in the habitable zone of their star, but we weren’t sure if they could actually be habitable,鈥 White-Gianella said.

The team鈥檚 results, , show that habitability hinges on the geologic carbon cycle 鈥 a water-driven process that exchanges carbon between the atmosphere and interior over millions of years, stabilizing surface temperatures.

Carbon dioxide, which comes from volcanoes in a natural system, accumulates in the atmosphere before falling back to Earth dissolved in rainwater. Rain erodes and chemically reacts with rocks on the Earth鈥檚 surface and runoff transports carbon to the ocean, where it sinks to the seafloor. Plate tectonics drives carbon-rich oceanic plates below continental land. Millions of years later, carbon resurfaces as mountains form.

If water levels drop too low for rainfall, carbon removal 鈥 from weathering 鈥 can鈥檛 keep up with emissions from volcanic eruptions and carbon dioxide levels in the atmosphere spike, trapping water. Rising temperatures evaporate the remaining surface water, initiating runaway warming that makes the planet too hot to support life.

鈥淪o that unfortunately makes these arid planets within habitable zones unlikely to be good candidates for life,鈥 White-Gianella said.

Each line on this graph represents 10,000 model runs. The vertical axis shows probability of extreme heat while the horizontal axis reflects liquid surface water inventory. The likelihood of lower surface temperatures improves when water inventory exceeds 20%. Photo: Planetary Science Journal/White-Gianella and Krissansen-Totton

Although scientists have instruments that can measure surface water, rocky exoplanets are difficult to observe directly. In this study, the researchers ran a series of complex simulations to better understand how water might behave in these desert worlds.

Previous efforts to model the carbon cycle focused on cooler, perhaps wetter planets. The models factored in evaporation from sunlight, but didn鈥檛 include other drivers, such as wind. White-Gianella adapted existing models to drier planets by refining evaporation and precipitation estimates.

鈥淭hese sophisticated, mechanistic models of the carbon cycle have emerged from people trying to understand how Earth鈥檚 thermostat has worked 鈥 or hasn鈥檛 鈥 to regulate temperature through time,鈥 said senior author , a UW assistant professor of Earth and space sciences.

However, the function of the geologic carbon cycle on arid planets was largely unexplored. The results show that even planets that form with surface water could lose it, transitioning from potentially habitable to uninhabitable due to carbon cycle disruption.

One such planet exists far closer to home: Venus. The planet of love is roughly the same size as Earth, likely formed around the same time and may have started with a similar amount of water.

Yet today, the surface of Venus rivals the temperature of a wood-fired pizza oven. Standing on the surface would feel like being crushed by 10 blue whales, White-Gianella said.

Many theories attempt to explain why Earth and Venus are so different. White-Gianella and Krissanen-Totton propose that Venus, being closer to the sun, may have formed with slightly less water than Earth, which imbalanced the geologic carbon cycle. As surface temperatures rose with atmospheric carbon dioxide levels, Venus lost its water 鈥 and any life it may have hosted.

Upcoming missions to Venus will attempt to understand what happened to the planet and whether it ever hosted life. The findings could also offer insight into planets much farther away.

鈥淚t鈥檚 very unlikely that we will land something on the surface of an exoplanet in our lifetime, but Venus 鈥 our nextdoor neighbor 鈥 is arguably the best exoplanet analog,鈥 White-Gianella said.

The researchers hope that results from future missions will help validate the results of their modeling.

鈥淭his has implications for a lot of the potentially habitable real estate out there,鈥 Krissanen-Totton said.

This study was funded by the National Science Foundation, the NASA Astrobiology Program and the Alfred P. Sloan Foundation.

For more information, contact White-Gianella at hasktw@uw.edu or Krissanen-Totton at joshkt@uw.edu.听

]]>
March research highlights: Nautilus habitat, eco-friendly tennis courts, more /news/2026/03/27/march-research-highlights-nautilus-habitat-eco-friendly-tennis-courts-more/ Fri, 27 Mar 2026 15:42:25 +0000 /news/?p=91111 The habits and habitats of ‘living fossils’ Nautilus and Allonautilus
Peter Ward, UW professor of both biology and Earth and space sciences, has spent his career studying the “living fossils” of Nautilus and Allonautilus species. Shown here is Ward holding Nautilus pompilius (white) and Allonautilus scrobiculatus (yellow) while scuba diving off the coast of Manus Island in 2015. Photo: Peter Ward/糖心原创

Nautilus and Allonautilus cephalopods and their extinct ancestors have been drifting through of the ocean for more than 500 million years. Researchers have spent the last 40 years trying to understand how these mysterious “living fossils” thrive in areas with limited nutrients. published in Scientific Reports, a UW-led team documented new habits and habitats for current Nautilus and Allonautilus species. These creatures appear to live in deeper water than their extinct cousins did, and the younger ones live twice as deep as the fully mature adults. Nautilus and Allonautilus species scavenge their food and never stop moving. While a few species migrate hundreds of meters down at dawn and then back up at dusk every day, the team found that most species aren’t quite as intrepid. The researchers also describe a new population of Allonautilus in waters off the island , one of several populations thriving due to hunting restrictions inspired in part by research efforts from this team.

For more information, contact senior author , UW professor of both biology and Earth and space sciences, at argo@uw.edu.

Other UW co-authors are , and . A full list of co-authors and funding is included


Green clay tennis courts become carbon negative after 10 years

The United States has around a quarter of a million tennis courts, 40,000 of which are helping mitigate greenhouse gas emissions. Green clay tennis courts, an alternative to traditional hard courts and the red clay courts popular in Europe, are constructed with a type of rock that reacts with carbon dioxide and water to sequester carbon as a stable dissolved salt. In , UW researchers show that in the U.S., green clay courts remove 25,000 metric tons of carbon dioxide from the atmosphere each year and 80% of green clay courts make up for construction emissions within 10 years. Moving forward, the researchers hope to experiment with other materials that also remove carbon dioxide without compromising performance for players.

For more information contact lead author , UW assistant professor of oceanography, at fjpavia@uw.edu.

A full list of co-authors and funding is available .


Temperature dynamics, not just extremes, impact heat tolerance in mussels

Mussels from Washington state waters. This common coastal species often consumed by humans can also be used to study the impacts of environmental variability. Photo: Andrew Dale

Intertidal mussels, forming bumpy layers on shoreline rocks, withstand significant temperature swings as the tide ebbs and flows. These creatures live in one of the most thermally variable environments on Earth, but a new study shows that the rate, timing and duration of heating and cooling impact their metabolic rate, a proxy for overall health. At the UW鈥檚 , researchers exposed mussels to temperature regimens with equal highs and lows but different patterns of change. Even when the average temperature for a set period was the same, the mussels鈥 response was distinct. These results, , show that predicting how marine organisms respond to climate change means considering how temperature changes over time, not just how warm it gets.

For more information, contact lead author , assistant professor of biology at the College of the Holy Cross and a mentor for the UW Friday Harbor Laboratories , at mnishizaki@holycross.edu.

The other UW co-author is . A full list of co-authors and funding is available .


When algae stop growing, bacteria start swarming

Tiny geometric algae, called , produce nearly a quarter of the world鈥檚 organic matter by photosynthesis. In the microscopic marine universe, diatoms coexist with both harmful and helpful bacteria. A new study, , describes how a recently identified species of marine bacteria targets diatoms based on growth phase and nutrient availability. Growing diatoms can resist bacterial attacks, but when growth ceases, the bacteria modulate their gene expression patterns to become aggressive 鈥 first swimming and releasing compounds that damage the diatom and then clustering around them to feed. Bacteria can also overcome the diatom鈥檚 defenses in nutrient-rich environments. These findings highlight the dynamic relationship between bacteria and algae in the lab. Moving forward, researchers will explore what, if anything, changes in a more complex environment.

For more information, contact lead author , UW postdoctoral fellow in oceanography, at dawiener5@gmail.com.

Other UW co-authors are and . A full list of co-authors and funding is available .

]]>
Ranking: Four UW subject areas place in global top 10 /news/2026/03/25/ranking-four-uw-subject-areas-place-in-global-top-10/ Wed, 25 Mar 2026 15:02:14 +0000 /news/?p=91083 photo of campus framing Mount Rainier
The UW is the best in the U.S. and No. 2 in the world for library and information management, according to the 2026 QS World University Rankings by Subject. Three other UW subject areas placed in the top 10 in the world: geology, geophysics and Earth and marine sciences. Photo: Pamela Dore/糖心原创

The 糖心原创 is the best in the U.S. and No. 2 in the world for library and information management, according to the 2026 released Wednesday. Three other UW subject areas placed in the top 10 in the world: geology, geophysics and Earth and marine sciences.

This ranking tracks an analysis of reputation and research output, conducted by . The consultancy looks at more than 18,300 individual university programs at more than 1,700 universities in 100 locations around the world. The ranking spans 55 academic disciplines across five broad faculty areas including arts and humanities; engineering and technology; life sciences and medicine; natural sciences; and social sciences and management.

The UW has 29 programs in the top 100, 14 in the top 50, and four in the top 10, including:

  • Library and information management 鈥 No. 2
  • Geology 鈥 No. 8
  • Geophysics 鈥 No. 9
  • Earth and marine sciences 鈥 No. 10

Visit the rankings site for .

]]>
Earthquake scientists reveal how overplowing weakens soil at experimental farm /news/2026/03/19/earthquake-scientists-reveal-how-overplowing-weakens-soil-at-experimental-farm/ Thu, 19 Mar 2026 18:01:09 +0000 /news/?p=90968 a tent set up on a farming field.
three people put something down in a dirt field
a woman holds a baby in the rain in a field
a man hunches over a computer under a tent in a field

Plowing, or tilling, is an age-old agricultural practice that readies the soil for planting by turning over the top layer to expose fresh earth. The method 鈥 intended to improve water and nutrient circulation 鈥 remains popular today, but concerns about soil degradation have prompted some to return to regenerative methods that disturb the soil less.

In a new study, a team led by 糖心原创 researchers examined the impact of tilling on soil moisture and water retention using methods originally designed for monitoring earthquakes. Researchers placed fiber optic cables alongside fields at an experimental farm in the United Kingdom and recorded ground motion from plots receiving different amounts of tillage and compaction from tractor tires pulling farm equipment.

The study, , shows that tilling and compaction disrupt intricate capillary networks within the soil that give it a natural sponge-like quality.

鈥淭his study offers a clear explanation for why the process of tillage, one of humanity鈥檚 oldest agricultural activities, changes the structure of soil in ways that affect how it soaks up water,鈥 said co-author , a UW professor of Earth and space sciences.

The link between tilling and soil degradation has been established for quite some time, but the rationale is less robust.

鈥淚t’s counterintuitive,鈥 Montgomery said.

Tilling is supposed to create holes for water to reach the roots of plants, but it breaks these small channels in the soil instead, causing rain to pool on the surface and form a muddy crust. Over time, this can increase erosion and flood risk. The researchers observed this phenomenon in detail using seismological methods.

For the past decade or so, physical scientists have been exploring ways to harness the fiber optic cable network to make remote observations. They use a technique called distributed acoustic sensing, or DAS, that records ground motion based on cable strain. Because the technology is so sensitive, it can also capture the speed at which sound waves pass through a substance, which is called seismic velocity.

When soil gets wet, seismic velocity changes. Sound moves slower through mud than dry dirt.

鈥淲e wanted to find out whether seismic tools could be used to understand how soil 鈥 under different treatment regimens 鈥斕齱ould respond to environmental variability,鈥 said senior author , a UW associate professor of Earth and space sciences.

An experimental farm near Newport in the United Kingdom, affiliated with Harper Adams University, turned out to be an ideal testing ground for their experiment.

The farm is split into rows that have received consistent cultivation for more than two decades.

There are no-till rows, rows tilled 10 centimeters deep and rows tilled 25 centimeters. Compaction is a byproduct of tilling caused by tractors. Different levels of compaction were tested by modulating tractor tire pressure.

鈥淲e took advantage of a natural experiment that had already been done, but just not yet measured,鈥 Montgomery said.

The researchers lined their experimental plots with a fiber optic cable. They collected continuous ground motion data for 40 hours and combined it with weather data over the same period, which featured light to moderate rainfall and mild temperatures.

鈥淲e observed the natural vibration of the ground and found that it is really sensitive to environmental factors, including precipitation,鈥 said , lead author and former UW postdoctoral researcher of Earth and space sciences, now at the Chinese Academy of Sciences.

They determined how each cultivation strategy impacted the soil鈥檚 response to rainfall by comparing trends in seismic velocity across study sites. Shi developed various models to process the data and help the researchers understand seismic velocity in terms of soil moisture.

The method is straightforward, inexpensive and offers far better spatial and temporal resolution than previous monitoring tools.

The researchers believe it could help farmers understand how to manage their land, provide real time flooding alerts, improve earth systems models by refining estimates of atmospheric water content and better inform seismic hazard maps with data on liquefaction risk.

Additional co-authors include , a UW professor of atmospheric and climate science, , a UW research assistant professor of civil and environmental engineering, from the University of California Santa Cruz, formerly at Purdue University, , , and from Harper Adams University, from the University of Exeter听

This study was funded by The Pan Family Fund, the Murdock Charitable Trust, the UW College of the Environment Seed Fund, the David and Lucile Packard Foundation, and a National Environmental Research Council cross-disciplinary research capability grant.听

For more information, contact Denolle at mdenolle@uw.edu.听

]]>
Stress-testing the Cascadia Subduction Zone reveals variability that could impact how earthquakes spread /news/2026/02/27/stress-testing-the-cascadia-subduction-zone-reveals-variability-that-could-impact-how-earthquakes-spread/ Fri, 27 Feb 2026 19:04:04 +0000 /news/?p=90805
Remnants of buried trees, such as those pictured above in the Neskowin Ghost Forest, can help researchers learn about earthquakes that occurred hundreds of years ago. A new 糖心原创 study reveals details about the structure of the Cascadia Subduction Zone that may help scientists understand what will happen when the next one hits. Photo:

The Cascadia Subduction Zone is unusually quiet for a megathrust fault. Spanning more than 600 miles from Canada to California, the fault marks the convergence of the Juan de Fuca and North American plates. While other subduction zones produce sporadic rumblings as the plates scrape past each other, Cascadia , fueling assumptions that the plates are locked together by friction.

The subduction zone 鈥 miles offshore and deep underwater 鈥 is difficult to observe. Most data collection is based onshore, which limits the breadth and quality of results. The lack of earthquakes further complicates efforts to understand its behavior and structure.

In a new study, the first to monitor strain offshore for an extended period of time, 糖心原创 researchers report that the plates may not be fully locked. Based on 13 years of ground motion data from sensors in different regions, the study shows the northern portion of the fault is locked and quiet, but the central region appears to be more active. There, researchers observed signs of a shallow, slow-motion earthquake and detected pulses of fluid flowing through subterranean channels, which may relieve pressure from the fault.

The findings, , may alter expectations of how this area will respond to a large earthquake. Similar features in other places have stopped a rupture that might have otherwise continued along the entire fault line.

鈥淚t鈥檚 preliminary, but we think that variable fluid pathways in Cascadia will change the behavior of large earthquakes on the fault,鈥 said co-author , a UW associate professor of Earth and space science.

The Juan de Fuca plate is advancing toward the North American plate at a rate of . But because the plates are stuck together, that motion generates pressure. Eventually, the building tension will exceed what the plates can tolerate. When they eventually slip free, an earthquake will spread along the boundary.

Megathrust earthquakes, which occur at boundaries where one plate slides beneath another, rock the Pacific Northwest every 500 or so years. one to 1700, and estimates suggest a 10 to 15% chance that the entire fault will rupture, producing an earthquake that could exceed magnitude 9, within the next fifty years. The results from this study do not alter those odds, but the dynamics captured might influence the severity of the eventual earthquake.

A recent survey of the seafloor found that into at least four geologically distinct segments. Each one may be insulated from a rupture in another region. In this study, the researchers took a closer look at two of the regions by analyzing data from three monitoring stations, one near Vancouver Island and two off the coast of Oregon.

In this map modeling subduction zone locking, red indicates where the plates are tightly locked and orange/yellow show less locking. Study sites are marked with red squares and the blue lines along the coast depict other faults 鈥 proposed fluid conduits in this study. The cross section shows fluid migration in more detail. Photo: Science Advances/Kidiwela et al.

鈥淲e wanted to understand strain changes in different regions offshore,鈥 said lead author , a UW doctoral student of oceanography. 鈥淲e used the seismometers to measure how the seismic velocity varies underneath each station.鈥

Seismic velocity is a term used to describe the rate at which ambient noise travels through a material. Because the speed of sound depends on what it is moving through, tracking seismic velocity can give researchers a window into processes occurring beneath the ocean floor.

鈥淲hen you compact something, you can expect the sound waves to move through it faster,鈥 said Kidiwela.

The steady increase in seismic velocity observed at the northern site told the researchers the rock was compacting, which supports the theory that the two plates are locked in place.

The central region displayed a different pattern. For two months in 2016, seismic velocity decreased. The researchers attribute this drop to a slow-motion earthquake on the shallow edge of the oceanic plate that relieved some of the pressure at the fault.

Other drops in seismic velocity, recorded between 2017 and 2022, were linked to fluid dynamics. Subduction squeezes liquid out of rocks and pushes it toward the surface. The study found that other faults, running perpendicular to the subduction zone, may act as pathways for letting trapped fluid out.

鈥淒uring a megathrust rupture, one of the ways that an earthquake propagates is through fluid pressure. If you have a way to release these fluids, it could help improve the stability of the fault, and potentially impact how the region behaves during a large earthquake,鈥 Kidiwela said.

Pulling data from just three sites, the researchers observed complex dynamics that may have gone overlooked. Future work will greatly expand this effort. in 2023 to build an underwater observatory in the Cascadia Subduction Zone.

鈥淔inding this link between fluids coming to the shallow subduction zone is pretty unique, as is the evidence that the fault is not completely locked,鈥 said co-author , a UW professor of oceanography and one of the scientists involved with the observatory. 鈥淚t suggests that we need more instruments there, because there may be more going on than people have been able to figure out before.鈥

Additional co-authors include from the University of Utah.听

This study was funded by the Jerome M. Paros Endowed Chair in Sensor Networks at the 糖心原创 and the National Science Foundation.听

For more information, contact Kidiwela at seismic@uw.edu.

]]>