Science and Program Highlights Archive

2022 Oct 11th

Scientists spy salty groundwater system beneath Antarctic ice stream

Fast moving ice streams enable Antarctica's ice sheets to flow outward toward its coasts. A new study using seismic and magnetotelluric data found great quantities of salty groundwater extending more than a kilometer below one of these Antarctic ice streams. Continue Reading
2022 Aug 22nd

Global seismographic networks part II: A slew of studies

One of the most commonly known uses of global seismograph networks is the near-instantaneous global monitoring of earthquakes and other phenomena that can shake the ground, but these instruments have many other societally important applications. Continue Reading
2022 Aug 22nd

Global seismographic networks part I: A brief history

Permanent global seismographic networks collect data that help answer fundamental questions about Earth. The most obvious use of such data involves pinpointing when and where earthquakes occur. But, such data can help with a variety of other problems. Continue Reading
2022 Aug 3rd

Seismic studies explore roots of Wrangell Volcanic Field

The increased density of seismic stations in Alaska has allowed researchers to explore longstanding questions about seismicity and volcanism in southeastern Alaska. Continue Reading
2022 Jun 29th

Major 2020 Alaska Quake Triggered Neighboring 2021 Temblor

A study led by researchers at Michigan State University and University of Alaska Fairbanks shows a connection between two earthquakes in 2020 and 2021 in adjacent areas off the Alaska Peninsula. Continue Reading
2022 Jun 10th

Subduction is the lowest form of flattery

The angle of the Nazca Plate changes as it subducts beneath South America. A new study may help explain why. Continue Reading
2022 May 16th

Scientists find marsquakes hidden within InSight data

As InSight measures seismicity on Mars, scientists use creative ways to analyze the data to extract maximal information. They’ve found many marsquakes hiding in the noise.  Continue Reading
2022 Apr 30th

Scientists find strange slow quakes in Cascadia’s seismic gap

Very low frequency earthquakes may reside in Cascadia’s seismically quiescent zone that sits between 15 to 30 kilometers depth—too deep for regular earthquakes, but not deep enough for other types of slow events.  Continue Reading
2022 Apr 20th

USArray listens to earthquakes’ inaudible infrasound

To better understand how the ground interacts with the air to create an atmospheric earthquake signal, researchers studied a pair of Alaskan earthquakes. What they found may help us study quakes on other planets! Continue Reading
2022 Apr 4th

Seismologists peek at mantle beneath Madagascar

Madagascar has remained tectonically quiescent for the last 85 million years, but between 28 and 1 million years ago, volcanic eruptions disturbed the otherwise ancient rocks. Now, scientists are exploring why. Continue Reading
2022 Mar 29th

Seismic Study Reveals Key Reason Why Patagonia is Rising as Glaciers Melt

Researchers from Washington University in St. Louis have discovered a link between recent ice mass loss, rapid rock uplift and a gap between tectonic plates that underlie Patagonia.  Continue Reading
2022 Mar 28th

Tracking booms and bursts across Eastern Europe

Bombs, blasts and bolides produce infrasound—acoustic waves that travel at such low frequencies that human ears cannot hear them. But snaking across Central and Eastern Europe, a network of infrasound detectors listens. Continue Reading
2022 Feb 23rd

Joining Forces!

UNAVCO and IRIS are joining forces for advancing geophysics! Continue Reading
2022 Jan 27th

Untangling the rupture of the 2021 M7.2 earthquake in Haiti

In this new study, scientists use global seismic records to resolve the rupture history of the 2021 magnitude 7.2 Haiti earthquake.  Continue Reading
2021 Dec 29th

Icequake or lava lake? Insights from Mount Erebus

Scientists look at elevated seismicity at Antartica’s Mount Erebus following large earthquakes to explore how ice behaves as stresses change Continue Reading
2021 Dec 15th

Seismic Shockwave Pattern May Be Redirecting Earthquake Damage

A study of earthquakes led by The University of Texas at Austin found that seismic shockwaves are shaped by jagged faults and the debris wedged between them. Continue Reading
2021 Nov 29th

After wildfires, seismometers listen for signs of debris flows

New research highlights how seismic signals, along with cameras and rainfall information, can assist scientists in post-wildfire debris flow monitoring and management. Continue Reading
2021 Oct 22nd

To explode or not to explode: Earthquakes may hold the answer

Those who monitor volcanoes often worry about whether impending eruptions will be explosive or not. The orientation of slip during earthquakes preceding volcanic activity may prove telling.  Continue Reading
2021 Oct 14th

MERMAID Data Now Available through the IRIS DMC

EarthScope-Oceans data are now fully archived, curated and available at the IRIS DMC.  Continue Reading
2021 Oct 14th

Women in Geoscience Video series

These short videos feature a broad range of women in geoscience from around the world. These inspiring scientists describe their work, their interests, and their desire to inspire young women to pursue STEM and STEAM. Continue Reading
2021 Sep 29th

Is Salt Lake City at Increased Risk of Earthquake‐induced Building Damage?

A new study by Boise State University and colleagues indicates that ground deformation may be the result of active faults beneath the city’s downtown, and that ground displacement from underlying faults presents a new hazard that should be addressed. Continue Reading
2021 Sep 29th

Bends in Caribbean transform fault requires rethinking simple models

Distinct seismic signals from the 2020 M7.7 earthquake on the Oriente fault in the Caribbean lead researchers to model more complex fault geometry in effort to better understand this event. Continue Reading
2021 Jul 27th

Building Australia, breaking Tasmania

Australia has been part of all major supercontinents and contains almost all known rock types from each period of Earth’s history. Because of Australia’s many past jousts with other tectonic plates, disentangling the details of this tapestry of terranes can be a rather stubborn task.  Continue Reading
2021 Jul 12th

Weird Earthquake Reveals Hidden Mechanism

A recent study by California State University-Bakersfield and Penn State University researchers again raises the idea that the Shumagin Gap may be able to host a great earthquake. Continue Reading
2021 Jun 8th

Is Earth’s Core Lopsided? Strange Goings-on in our Planet’s Interior

Seismologists at the University of California, Berkeley have discovered that Earth’s solid-iron inner core is growing faster on one side than the other, and it has been ever since it started to freeze out from molten iron more than half a billion years ago. Continue Reading
2021 Jun 1st

Boundary to backstop: the Eastern Denali Fault

Can the eastern Denali Fault rupture as catastrophically as its westerly counterparts? A team of scientists from the University of Calgary aimed to find out. Continue Reading
2021 May 28th

IRIS data used to win Gold Medal in Science Fair!

Student project "The Silence of Canadian Cities: Seismic Impact of Lockdowns" wins Gold Medal at Science Fair! Continue Reading
2021 May 17th

The MAGIC of multiple datasets in eastern North America

The MAGIC experiment allows scientists to see how complicated tectonic process manifest at deep levels of the eastern margin of North America. By linking the deep structure with surface observations “we can inform our views of the past processes.”  Continue Reading
2021 May 4th

Fin Whale songs illuminate oceanic crustal layers

Scientists use the songs of fin whales to image different layers of oceanic crust by examining how the songs’ acoustic waves bounce and bend at crustal structures off the Pacific Northwest coast.  Continue Reading
2021 Apr 23rd

Release of the new IRIS mars-event Service for Accessing the Seismic Event Catalog from the InSight Mission to Mars

We are proud to announce the release of the mars-event web service, an implementation of the FDSN-event specification adapted for Martian seismic events known as marsquakes. Continue Reading
2021 Apr 8th

A brief history of the very first broadband seismic station

The advent of a seismometer that could measure a broad range of frequencies changed seismology forever. This is the origin story of that instrument. Continue Reading
2021 Mar 17th

Scientists Plumb the Depths of the World’s Tallest Geyser

University of Utah researchers developed an image of the subsurface below Yellowstone's Steamboat Geyser to learn more about its plumbing structure and what controls a geyser from erupting regularly, like Old Faithful, versus irregularly, like Steamboat. Continue Reading
2021 Mar 2nd

The mystery of the missing plume head

Did the Hawaiian-Emperor plume record plate motion or change it? New research provides a snapshot of a subducted oceanic plateau that can help scientists disentangling the geography of the geologic past. Continue Reading
2021 Feb 4th

Former Piece of Pacific Ocean Floor Imaged Deep Beneath China

An international team, including a seismologist from Rice University, published a study that offers new evidence about what happens to water-rich oceanic tectonic plates as they are drawn through Earth’s mantle beneath continents. Continue Reading
2021 Jan 25th

EarthScope watches the sky

High-latitude seismometers typically tasked with peering inside the earth can also record electromagnetic undulations in the sky. Continue Reading
2021 Jan 11th

Piecing together Alaska

This exciting work simultaneously takes a snapshot of the basins, volcanic systems, and tectonic plates all interacting miles beneath the surface of Alaska. Continue Reading
2020 Dec 11th

Undersea Earthquakes Shake Up Climate Science

Researchers at Caltech have discovered that seismic rumblings on the seafloor can provide another tool for monitoring the temperature of ocean waters. Continue Reading
2020 Dec 11th

Far-flung shakes trigger small quakes

When large earthquakes of M7.0 or greater strike anywhere from tens to thousands of miles away, seismic stations around Coso often record an uptick of tinier temblors. To explore possible mechanisms for how large faraway earthquakes can trigger small ones near Coso, researchers examined 13 years of seismic data.  Continue Reading
2020 Dec 3rd

IRIS Data Services Winter Newsletter

Find out what's happening at the IRIS DMC in the Winter Newsletter! Continue Reading
2020 Oct 26th

Scientists Detect Unexpected Widespread Structures Near Earth’s Core

University of Maryland geophysicists analyzed thousands of recordings of seismic waves to identify echoes from the boundary between Earth’s molten core and the solid mantle layer above it.  Continue Reading
2020 Oct 21st

Under pressure: wringing signals from horizontal sensors

Atmospheric pressure and tilt related noise hamper seismic investigations; a new study works towards solving these problems. Continue Reading
2020 Sep 29th

Exploring icy worlds using seismology

This research team uses Gulkana Glacier in Alaska as a proxy for icy Europa in order to test seismic equipment and deployment strategies with an eye towards one day putting seismometers on Jupiter's smallest Galilean moon! Continue Reading
2020 Sep 15th

Seeing seismic swarms

In January of 2014 a small seismic swarm rattled Virginia City for approximately 10 days. Swarm-like activity can cause concern because swarms can evolve over time, resulting in damaging ground motions.  Continue Reading
2020 Sep 8th

Mozambique experiences damaging rift-related earthquakes

Central Mozambique has experienced several damaging earthquakes in the last few decades, including a M5.6 event on December 22, 2018, near the Zimbabwe border. Seismic stations from around the world helped to clarify the characteristics of this earthquake. Continue Reading
2020 Aug 17th

World Series of Earthquakes

IRIS's World Series addresses regional tectonic forces and resulting recent and historic earthquakes around the world (ex. Japan, Alaska, Peru-Chile, Central America, Mexico, Pacific Northwest).  Continue Reading
2020 Jul 9th

Researchers Develop New Explanation for Destructive Earthquake Vibrations

Brown University researchers propose that rocks colliding inside a fault zone as an earthquake happens are the main generators of high-frequency vibrations. Continue Reading
2020 Jun 12th

IRIS Statement on Racism in Geoscience

We at IRIS join our colleagues from across the country and around the globe in unequivocally denouncing racism. BLACK LIVES MATTER. We also know that racism is persistent in STEM and that there are systemic inequalities in academia and particularly in the geosciences. Continue Reading
2020 Jun 5th

Tearing an arc apart—insights from the northern Taupo Volcanic Zone

Researchers used seismic waves in the Bay of Plenty to create detailed images of the crust and mantle spanning the underwater northern section of the Taupo Volcanic Zone. By peering into the subsurface, they found evidence of a positive feedback relationship between magmatic intrusion and crustal extension.  Continue Reading
2020 May 19th

Peeking at the Plumbing of One of the Aleutian’s Most Active Volcanoes

A new approach to analyzing earthquake data revealed an impressive level of detail in the deep plumbing system underlying Alaska’s Cleveland volcano. Continue Reading
2020 May 18th

Distant quakes trigger undersea landslides in Gulf of Mexico

Massive submarine landslides are often shaken loose if a large earthquake strikes nearby. However, triggers for smaller landslides are poorly understood. In a recent paper Dr. Wenyuan Fan and his colleagues, discovered 85 previously unknown submarine landslides in the Gulf of Mexico by analyzing 8 years of seismic data and extracting characteristic seismic signals of continental slope careening downhill.  Continue Reading
2020 Apr 15th

Exploring the complexities of the 2019 Ridgecrest earthquake sequence

On July 4th, Ridgecrest, California, was rattled by a magnitude 6.4 earthquake. 34 hours later, a magnitude 7.1 earthquake ruptured approximately 10 kilometers away from the initial shock. Learn how this complex earthquake sequence is changing our understanding of how faults work. Continue Reading
2020 Apr 2nd

Reduction in seismic noise because of changes in human activity

Researchers who study Earth’s movement are seeing a drop in seismic noise as a result of transport networks and other human activities being shut down.  Continue Reading
2020 Mar 26th

Monitoring groundwater with a single seismometer

New research shows that a single seismometer can track yearly changes in groundwater level, which may be helpful for aquifers around the world that lack monitoring wells. Continue Reading
2020 Mar 2nd

Seismometers detect small icebergs produced by Greenland’s glaciers

The iceberg-calving process is a key mechanism by which large volumes of ice are lost from Greenland glaciers, yet many details of this process were previously unknown. Now, scientists can learn more about glacial calving using seismic data from the Greenland Ice Sheet Monitoring Network (GLISN). Continue Reading
2020 Feb 3rd

How does a tectonic plate die?

Armed with information from seismic arrays, scientists explore the question of how oceanic tectonic plates "die". Continue Reading
2020 Jan 27th

Early seismic waves hold the clue to the power of the main temblor

A team of researchers at Harvard University used data products and created numerical models to predict an earthquake’s final magnitude 10 to 15 seconds faster than today’s best algorithms. Continue Reading
2020 Jan 6th

Rainy days make glaciers move and shake

It is the growth of cavities at the ice-rock interface that is driving crevasse growth at the glacier’s surface. Lagging behind the zone of cavitation is an increase in seismicity characteristic of crevasse growth—icequakes.  Continue Reading
2019 Nov 26th

How thick is the lithosphere under the southeastern US?

In previous seismic studies, researchers interpreted pockets of relatively slow seismic velocities in the eastern US as evidence for thin, broken-up lithosphere. But, magnetotelluric imaging supports a thick, coherent lithospheric block. Murphy and Egbert (2019) reconcile these seemingly contradictory datasets. Continue Reading
2019 Nov 4th

Final Report on the Ocean Bottom Seismograph Instrument Pool Facility

The final report for the National Science Foundation funded Ocean Bottom Instrument Pool (OBSIP) facility is now available.  Continue Reading
2019 Oct 15th

Stormquakes

New research presents evidence that strong storms produce seismic surface waves that are distinct and measurable. The name for these newly discovered geophysical phenomenon? Stormquakes. Continue Reading
2019 Sep 16th

Bears vs. Seismic Stations

Many animals encounter sites where seismic equipment has been installed but most animals leave these sites alone after a cursory glance or sniff. In contrast, bears appear to be enticed to visit station sites and investigate the seismic equipment, sometimes causing significant damage. What's a seismologist to do? Continue Reading
2019 Sep 5th

‘Suture Zone’ to Blame for Mysterious 2014 Earthquake Felt Across Florida

University of South Florida seismologists have uncovered the unexpected source of a magnitude 5.1 earthquake that occurred in 2014 along the northern coast of Cuba. Continue Reading
2019 Aug 1st

Aftershocks of 1959 Earthquake Rocked Yellowstone in 2017-2018

A swarm of more than 3,000 small earthquakes that occurred between June 2017 and March 2018 in the Maple Creek area of Yellowstone National Park are, at least in part, aftershocks of the 1959 quake. Continue Reading
2019 Jul 23rd

Tracking Typhoons

In the western Pacific Ocean, massive tropical cyclones (called typhoons) occur throughout the year. Retailleau and Gualtieri (2019) show that seismology can be used to track and measure tropical cyclones as they churn through the ocean because they create “secondary microseisms.” Continue Reading
2019 Jul 11th

A tale of time and magnitude

Can seismologists determine the size of an earthquake before the earthquake is over? Continue Reading
2019 Jul 5th

The hum of the earth

Hidden amidst the tumult of seismic data generated by earthquakes, explosions and other earth-shacking phenomena is a quiet hum. Discovered relatively recently, this hum is Earth’s background noise, and it originates within the oceans.  Continue Reading
2019 Jul 3rd

Indonesia’s Devastating 2018 Earthquake was a Rare ‘Supershear’

According to UCLA researchers, a study using high-resolution observations of the seismic waves caused by the temblor, along with satellite radar and optical images, found that the earthquake propagated unusually fast. Continue Reading
2019 Jun 26th

Where are the IRIS Interns Now?

A survey finds that most IRIS intern alumni are employed in the geosciences, but across a variety of employment sectors. Continue Reading
2019 Jun 3rd

Scientists Identify Almost 2 Million Previously “Hidden” Earthquakes

Using powerful computers and a technique called template matching, scientists at Caltech have identified millions of previously unidentified tiny earthquakes. A closer look at seismic data from 2008–2017 expands Southern California's earthquake catalog by a factor of 10. Continue Reading
2019 May 29th

Deep earthquakes in the depths of the ocean

Beneath the sparkling blue seas in the southern Pacific Ocean lies the mysterious underworld of the Tonga Trench – the second deepest place on Earth. The Tonga Trench is over 10 km deep and is home to +65% of the world’s deepest earthquakes. In 2018, two of the largest deep earthquakes ever recorded in this part of the Pacific occurred within days of one another. But why? Continue Reading
2019 May 14th

Noisy wind – A tale of tilting seismometers

Important work by former IRIS Intern Sydney Dybing and others show that noise, whatever the cause, provides the lower limit of resolution for a given seismometer, and that limit is dependent on depth, substrate and installation style Continue Reading
2019 May 1st

Massive 1994 Bolivian Earthquake Reveals Mountains 660 Kilometers Below our Feet

Princeton geophysicists, in collaboration with colleagues in China, used data from an enormous earthquake in Bolivia to find mountains and other topography on the base of the transition zone that separates the upper and lower mantle. Continue Reading
2019 Mar 28th

Injection Wells Can Induce Earthquakes Miles Away from the Well

A study by researchers at the University of California, Santa Cruz finds that injecting fluid into sedimentary rock can produce bigger, more distant earthquakes than injecting into the underlying basement rock. Continue Reading
2019 Mar 13th

Seismology on Ice!

Follow the adventures of Dr. Bob Woodward, the Director of IRIS Instrumentation Services, as he travels to Antarctica to do "Seismology on Ice"! Continue Reading
2019 Mar 13th

Investigating “man-made quakes” in Western Canada

In the US, most induced earthquakes are the result of wastewater injection, whereas in western Canada, induced earthquakes are more closely correlated with hydraulic fracturing operations. Why do some areas experience induced earthquakes while others remain seismically inactive?  Continue Reading
2019 Mar 1st

Seismic Study Reveals Huge Amount of Water Dragged into Earth’s Interior

Slow-motion collisions of tectonic plates under the ocean drag about three times more water down into the deep Earth than previously estimated, according to a first-of-its-kind seismic study by researchers at Washington University in St. Louis. Continue Reading
2019 Feb 20th

Reflections on the Accomplishments of EarthScope’s USArray

The USArray has operated for over 15 years as a community science facility designed to address EarthScope’s goal of understanding the structure and evolution of the North American continent. Continue Reading
2019 Feb 5th

A subduction zone in pieces: the segmented Cascadia megathrust

Onshore and offshore seismic data informs researchers working on megathrust boundaries, improving our understanding of where subduction zone earthquakes might occur and why. Continue Reading
2019 Feb 1st

IRIS PASSCAL to Expand Pool of Seismic Instruments

IRIS has begun the procurement of 460 Fairfield nodes for general PASSCAL pool use. The new nodes should be ready for general usage starting in February 2019 (bringing the general node pool to 533 units).  Continue Reading
2019 Jan 22nd

Tiny Northwest Quakes Tied to Deep-Crust Structure

Rice University researchers found a strong correlation exists between tremor density and underthrusting sediments at the Cascadia margin off the Pacific Northwest’s coast. Fluids that are released from the downgoing slab are concentrated in these sediments and lead to very slow seismic velocities in the region. Continue Reading
2019 Jan 8th

Quaking beneath the ice

The geology of East Antarctica lies hidden below many kilometers of ice, and presents a fascinating and complex problem for geologists. Historically, very few earthquakes have been recorded in Antarctica but data from a new seismic array has allowed scientists to detect earthquakes below the ice, and their results directly contradict the notion that Antarctica is seismically and tectonically inactive.  Continue Reading
2018 Dec 20th

Test, Collapse, Swarm

In 2017, the government of the North Korea detonated a hydrogen bomb. In the following days, several additional seismic events were recorded. Using seismic data from the IRIS DMC and other networks, researchers were able to determine locations and probable causes for these seismic events.  Continue Reading
2018 Oct 24th

Antarctic Ice Shelf ‘Sings’

According to research led by Colorado State University, winds blowing across snow dunes on Antarctica’s Ross Ice Shelf cause the massive ice slab’s surface to vibrate, producing a near-constant set of seismic tones that could potentially be used to monitor changes in the ice shelf. Continue Reading
2018 Oct 22nd

Regional geoelectric hazard assessment

Geomagnetic storms can wreck havoc on the world’s electrical grids, communications systems, and navigational infrastructure. To prepare for future geomagnetic storms, scientists need to know more about Earth's geoelectric field and how it varies during storm events.  Continue Reading
2018 Sep 25th

IRIS Station Monitor App now available!

Explore earthquakes near you or around the world using the new IRIS Station Monitor app! Available for both Android and iPhone! Continue Reading
2018 Sep 12th

USArray in the news!

USArray Transportable Array science featured in exciting Accuweather video special feature! Continue Reading
2018 Sep 12th

Yellowstone Super-Volcano Eruptions were Produced by Gigantic Ancient Oceanic Plate

Scientists have long thought that Yellowstone Caldera is powered by heat from the Earth’s core. New research by Virginia Tech seismologist Ying Zhou suggests that Yellowstone volcanoes were produced by a gigantic ancient oceanic plate that dove under the Western United States about 30 million years ago. Continue Reading
2018 Sep 12th

Seismicity beneath Kīlauea ‘s Southwest Rift Zone

Researchers are examining seismic activity within Kīlauea ‘s rift zones to understand the connection between the caldera and the rift zones to provide a better framework for interpreting seismicity around the volcano.  Continue Reading
2018 Sep 7th

Untangling the subduction history of western North America

Subducted lithosphere can be imaged below our feet using a technique called seismic tomography. By combining this subsurface imaging method with surface geology scientists can learn about the timing and extent of oceanic subduction and how and when continents collided. Continue Reading
2018 Aug 3rd

GSN seismic station recorded the sounds of Hurricane Maria

Newly installed infrasound sensors at a GSN station on Puerto Rico recorded the passage of Hurricane Maria.  Continue Reading
2018 Jul 25th

Seismometer Readings Could Offer Debris Flow Early Warning

Researchers at Caltech investigate whether seismometers in the field could be used to provide an early warning of an incoming debris flow to residents in mudslide-prone areas. Continue Reading
2018 Jul 5th

IRIS Internship Program 20th anniversary!

The IRIS Internship Program celebrates 20 years of success! Continue Reading
2018 Jun 4th

Scientists Find Pre-Earthquake Activity in Central Alaska

Researchers from the University of Alaska Fairbanks Geophysical Institute found evidence for accelerating activity before a 2016 earthquake in a laterally moving fault zone in central Alaska. The activity included a phenomenon known as very low-frequency earthquakes. Continue Reading
2018 May 21st

Take a Peek at a Day in the Life of an IRIS Seismologist

IRIS Seismologist Kasey Aderhold shares the excitement of her work to discover more about earthquakes, including field work in Alaska. Continue Reading
2018 May 5th

IRIS Joins NASA to Engage the Public about the Mars InSight Mission

IRIS Seismology Education & Outreach Specialist Tammy Bravo (third from right) poses with the NASA Mars InSight Team prior to the launch. Continue Reading
2018 Apr 17th

Highlights from the Field

Students from UNR conduct geophysical research on a former nuclear test site using 30 Texans with 4.5 Hz vertical geophones from the PASSCAL Instrument Center. Using this equipment the class recorded two deep refraction microtremor arrays 2 km long, centered across ground zero. Continue Reading
2018 Feb 27th

Register for the 2018 IRIS Workshop!

2018 IRIS Workshop: Foundations, Frontiers, and Future Facilities for Seismology Continue Reading
2018 Feb 15th

IRIS Animations, Webinars and Videos

IRIS has more than 200 animations, webinars and videos to provide information and background on Earth science fundamentals from plate tectonics to seismic wave propagation. Continue Reading
2018 Jan 19th

Seismic Reawakening along the South-Central Chile Megathrust Boundary

Using GPS to examine regional changes in the earth’s surface with time, and seismology to understand the rupture process and stress changes associated with nearby earthquakes, researchers are seeking to understand the “reawakening” of the megathrust boundary along the west coast of Chile. Continue Reading
2017 Oct 4th

EarthScope’s Transportable Array Spans Alaska, the Last Frontier

After covering the lower 48 United States from coast to coast with a grid of nearly 1700 sites, the final seismic station of the EarthScope Transportable Array has been installed in Alaska! Continue Reading