Department of Earth, Environmental & Planetary Sciences
News from DEEPS

Unpacking the DEEPS Field Gear

For her recent UTRA project, Ava Ward '25 tackled the organization and stewardship of the department's field and camping supplies to help DEEPS students gear up for safer, more sustainable adventures.
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Postdoctoral Research Associate Andrea Rajšić has published new research in Journal of Geophysical Research: Planets, titled "Using the Melosh Model of Acoustic Fluidization to Simulate Impact Crater Collapse on the Earth and Moon." The publication explores the role of acoustic fluidization in crater collapse, examining vibration properties and their effects on subsurface deformation, with models improving upon simplified approaches to reproduce depth-to-diameter trends on Earth and the Moon.
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NASA Jet Propulsion Laboratory

NASA Mars Orbiter Spots Retired InSight Lander to Study Dust Movement

New images taken from space show how dust on and around InSight is changing over time — information that can help scientists learn more about the Red Planet. “Even though we’re no longer hearing from InSight, it’s still teaching us about Mars,” said science team member Ingrid Daubar, DEEPS Associate Professor (Research). “By monitoring how much dust collects on the surface — and how much gets vacuumed away by wind and dust devils — we learn more about the wind, dust cycle, and other processes that shape the planet.”

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On Friday, Associate Justice Brian P. Stern authorized Special Master Rick Land to guide Rhode Island Recycled Metals through the environmental permitting process. During and after the July 10th fire at Rhode Island Recycled Metals, Brown University’s Breathe Providence project detected significant spikes in a particulate matter called PM2.5 in South Providence, Fox Point, Hope Street, and Pawtucket. Meredith Hastings, DEEPS Chair and director of Breathe Providence, commented on the court's decision, writing that it's “a step in the right direction. Industries in the Port of Providence really do need to be held accountable and make changes that will protect the health, well being and quality of environment for the surrounding communities and their workers.”
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Two new reports highlight concerns from research and non-tenure track faculty about feeling stagnated in their roles. Jim Russell, senior associate dean of the faculty and DEEPS professor, leads a group developing recommendations to support and promote equity for research faculty, emphasizing their significant contributions beyond lab work: “They’re not just doing research in labs, they’re leading really important research programs.” Ingrid Daubar, an associate research professor in DEEPS, noted her department's supportive environment and expressed her hope for improvements: “One thing I hope comes out of this process is a more uniform experience across the university, where all research faculty feel like a valued part of their communities.”
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Fishermen and scientists report that tarpon, a large warm-water trophy fish, have been migrating north. In June, Thomas Czernik, a DEEPS graduate student was fishing for striped bass at night off Aquidneck Island in Rhode Island. “I feel lucky,” Czernik says. “It’s a memory I’ll have forever. I’m thankful.”
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Sky & Telescope

Icy Rivers May Have Flowed on Ancient Mars

New research led by Peter Buhler from the Planetary Science Institute proposes that a carbon-dioxide ice cap may have acted as an insulating layer on Mars, allowing rivers and a large lake to form in the planet’s southern highlands. DEEPS Professor James Head commented, "Peter Buhler has done a magnificent job of exploring the implications of possible massive atmospheric collapse and CO2 ice accumulation in the south circumpolar region at a critical early time in the history of Mars."
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Geologists generally think that creep happens on faults that slice through particularly slippery rocks. But a recent study co-authored by Professor Victor Tsai reports that the overall structure of a fault network might also dictate why some faults creep rather than intermittently slip dramatically.
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Politicians and green advocates want to keep the focus on limiting global warming to 1.5C, even though scientists say the planet is already on track to soon breach the target. Professor Kim Cobb offered commentary on the issue, noting that people are “more and more talking about how we can limit overshoot.”
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UK-based scientists have used a new calculation method to find that global temperature rise is nearly at the Paris Agreement limit. DEEPS Professor and IBES Director Kim Cobb offered commentary on the study, saying it presents "a new approach to an age-old and critical question."
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The Brown Daily Herald shares an in-depth remembrance of Jan Tullis and her decades of groundbreaking research and influential mentorship. Julia Grossman ’23 shared her first impressions of Jan, saying “One: this woman is incredible and she’s calling me partner. I don’t know what that means but I like it. Two: she has really strong opinions and usually they are correct. Three: I know I’m going to be taken care of here."
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“Sott’Acqua: A Tale of Two Cities Underwater,” explores the histories of Providence and Florence, Italy, as they rebuilt after floods, through workshops, screenings, tastings, exhibits and expert-led discussions on climate change.
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A recent study in Nature Communications, co-authored by Professor Baylor Fox-Kemper, reveals that turbulence from ocean fronts—driven by submesoscale shear—significantly influences the transfer of heat, gases, and nutrients in the upper ocean layer, impacting climate and ocean productivity, especially in winter, which could improve climate model accuracy.
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New radiometric dating of material returned from the Moon suggests there was active volcanism 120 million years ago – nearly 2 billion years more recently than previous estimates. Assistant Professor James Dottin III shared his perspective, unconvinced that the three beads are conclusively volcanic.
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Kim Cobb, a professor of earth, environmental and planetary sciences and Director of the Institute at Brown for Environment and Society, delivered the Family Weekend keynote about the inflection point at which the world finds itself — and the numerous ways that the current generation of students is rising to face critical climate challenges through research and action. “I am extremely optimistic, mostly because the work that we’re doing here at Brown is illustrative of the engagement of this institution, and our entire community in making solutions that are durable and equitable,” Cobb said.
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Nature Communications Earth & Environment

Marine heatwaves suppress ocean circulation and large vortices in the Gulf of Alaska

In a recent study published in Nature Communications Earth & Environment, OCE High School Interns working with Professor Emanuele Di Lorenzo found that marine heatwaves in the Gulf of Alaska have intensified since 2013, disrupting ocean currents known as eddies, which support marine life. Using 30 years of satellite data and climate models, the team examined how these heatwaves affect nutrient-rich ocean currents called eddies, which support phytoplankton. The study revealed that marine heatwaves create high-pressure conditions that weaken coastal circulation, reducing the formation of eddies and threatening marine life.
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A recent publication in Science by Andrea Tokranov, Class of 2012, presents a national predictive model for assessing the level of "forever chemicals" (PFAS) in groundwater at the depths of drinking-water supplies across the United States. The study suggests that up to 95 million people may unknowingly rely on groundwater contaminated with PFAS. Since PFAS analysis is costly, the model aims to help direct resources to high-risk areas.
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According to new research published in the Proceedings of the National Academy of Sciences, conducted during three research cruises from 2017 to 2019 in the Mediterranean Sea, scientists discovered that tiny ocean organisms are transported to deeper waters by currents called intrusions, significantly impacting the ocean's ecosystem. “We found that because these organisms are so small, they can be swept up by ocean currents that then bring them deeper than where they grow,” said Assistant Professor Mara Freilich. “It’s often a one-way trip for these organisms, but by taking this trip, they play a critical role in connecting different parts of the ocean.”
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This week, the eleventh session of the World Meteorological Organization (WMO) Research Board considered critical developments in Artificial Intelligence for weather forecasting under the leadership of Board Chair Professor Amanda Lynch.
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NASA has announced a new strategy review team, including DEEPS Professor Jack Mustard, to assess potential architecture adjustments for the agency’s Mars Sample Return Program. The program aims to bring back scientifically selected samples from Mars, and is a key step in NASA’s quest to better understand our solar system and help answer whether we are alone in the universe.
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A recent Brown Daily Herald poll found that female students are less likely than their male counterparts to study the physical sciences at Brown. DEEPS Chair, Professor Meredith Hastings discussed how representation and the “leaky pipeline" contribute to this issue, and highlighted ways it is being addressed. “We definitely have seen the numbers go up across the board,” Hastings said, adding that more work is yet to be done, such as addressing exclusionary behaviors.
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The Europa Clipper spacecraft lifted off from Cape Canaveral on October 14th to find out whether the icy ocean of Jupiter's moon is habitable. “We’ll be able to describe what that habitable environment is like,” says Associate Professor Ingrid Daubar, who works on Clipper for NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California.
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Following the catastrophic damage caused by Hurricanes Helene and Milton, scientists warn that the Atlantic hurricane season is far from over. Assistant Professor Chris Horvat commented, “The Gulf (of Mexico) remains fairly anomalously warm even at this point in the year, so we shouldn’t relax."
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DEEPS Assistant Professor James Dottin is featured in the latest installment of PBS's award-winning documentary series, NOVA. The five-part series premiers on October 2nd, and will focus on the solar system.
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Physics Today

Early-career faculty face many challenges

Physics Today contacted early-career faculty in the physical sciences to discuss the unexpected challenges of their new role, including securing funding, building labs, teaching, and recruiting students—often without formal training. Assistant Professor James W. Dottin shared his experience setting up his lab.
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The endeavour to leverage mycotecture – called the Mycotecture Off Planet Structures at Destination project – has recently been awarded a Phase III contract with NASA, meaning it will receive the funding necessary to continue. The mycotechnology has the support of prominent NASA figures such as DEEPS Professor Jim Head, who once trained astronauts for the Apollo lunar exploration programme, and Apollo 15 commander David Scott.
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News from DEEPS

Cooperdock and Carrera's Alaskan Fieldwork Expedition

This summer, DEEPS Assistant Professor Emily H. G. Cooperdock, graduate student Anahi Carrera, and Columbia University Professor Steven L. Goldstein visited the island of Unalaska to collect samples that will help interpret data from a 2015 NSF GeoPRISMS campaign, as well as pave the way for future research.
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Professor Greg Hirth has been awarded the 2024 Harry Hess Medal from the American Geophysical Union. The Harry H. Hess Medal is given annually to a senior scientist in recognition of outstanding achievements in research on the constitution and evolution of the Earth and other planets.
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Each year, AGU celebrates individuals who have made significant contributions to the Earth and space sciences. This year, DEEPS graduate student Manar Al Asad was honored with the 2024 Study of the Earth's Deep Interior Section Award for Graduate Research.
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A new paper published earlier this year by alumn Benjamin Boatwright PhD’22 and Professor James Head PhD’69 proposes new refinement to current imagining technologies using a method they call “shape-from-shading.”
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Logan Tullai ’25 oversaw the creation of large-scale cyanotype prints using two rolls of NASA Lunar Orbiter film, decommissioned from the repository of NASA data and images once housed within DEEPS. “I thought it would be cool to use the sun’s UV to make pictures of the moon,” Tullai said.
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Impact: Research at Brown

A Spirit of Summer Inquiry

Brown offers transformational opportunities for students to conduct summer research with faculty colleagues and present results at the Summer Research Symposium. Impact: Research at Brown shared highlights from the event, including a quote from WaTae Mickey Jr. ’26, whose ultimate goal is to plan missions to space.
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Many researchers describe public outreach as a labour of love, often carried out in their spare time. But some funders reward these activities. In an interview with Nature, Voss Postdoctoral Research Associate Lina Pérez-Angel described her insight and experience with science communication, noting “Science communication is as real and as hard as doing research.”
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Voss Postdoctoral Research Associate Lina Pérez-Angel discussed the rapid acceleration of climate change in an interview with The Guardian, saying “there’s nothing in Earth’s history that shows a change happening this quickly.”
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News from DEEPS

2024 Summer Undergraduate Research Highlights

From missions to the Moon & Mars, to lake sediments, to climate modeling, many undergraduate students worked on groundbreaking research in DEEPS this summer break. This year, we are excited to showcase these diverse research projects through a special combination of art, writing, and photography developed by Claire Xu ‘27.
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In a recent study published in the PLanetary Science Journal, researchers describe an odd surface feature that supports the presence of underground caves termed subsurface voids. DEEPS professor and study co-author James Head indicated that the relatively low lunar gravity likely allowed big bubbles of gas to form in magma, leaving behind subsurface voids.
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In a recent study published in Science Advances, DEEPS PhD candidate Manar Al Asad and Assistant Professor Harriet Lau demonstrate that Earth's early tectonic activity was likely very different from what we see today. They propose a 'sluggish-lid' mode, where the Earth's outer layer moved slowly and was partially disconnected from the mantle. The new model addresses previous challenges in understanding Earth's thermal history and tectonic evolution, offering new insights into how Earth's magnetic field is maintained throughout most of Earth's history.
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