Derek Schutt in the Yukon for the Mackenzie Mountains EarthScope Project

Derek Schutt


Wait, I could do geophysics—physics and math—and go outside?! That's the perfect combination.
Geodetic GPS station P311 atop the Sierra Nevada mountains at Coyote Ridge, at an elevation of 3,699 meters, near Bishop, California. This station and many others show that these mountains are currently uplifting at 1–2 millimeters per year. (Image courtesy of Shawn Lawrence, UNAVCO.)

Exploring a Changing Continent Using a Plate Boundary Observatory


Geodesy is the science of measuring the size, shape, and gravity field of Earth, and how these change with time.
15 years

Fifteen Years of Earth Science Exploration


The EarthScope National Office
Transportable Array project staff in 2013.

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.
location of speaker series

Education Corner: Final inSights Issue


Sharing Science through the EarthScope Speaker Series and Save the Date for the EarthScope Legacy Education and Outreach Virtual Workshop
SAFOD scientists and core sample

San Andreas Fault Observatory at Depth


The Gold Standard for Scientific Drilling Through an Active, Continental Transform Fault
inSights banner

EarthScope Announcements


inSights Final Issue February 2019


EarthScope video intro

New EarthScope Video!


15 Years of Geoscience Discovery and Education in North America
top 10

EarthScope Top 10 Discoveries


Cliffs of the Midcontinent Rift

Redrawing the Map of the Midcontinent Rift


EarthScope data is changing our views of this billion-year-old feature
stomp test

Alaska Amphibious Experiment Crosses the Shoreline


New ocean-bottom seismometers complement the Transportable Array
Station RLAP

PBO Station Highlight: A Puzzle in the Midcontinent


What causes earthquakes in the interior of North America, far from plate boundaries?
Showing plate movement direction at a PBO station in Alaska.

Education Corner: 2018 ANGLE Teacher Workshop


This issue features the first ANGLE educator workshop, which focused on giving educators tools for teaching about Alaska geoscience and community resiliency to tsunami and earthquake hazards.
EarthScope announcements header

EarthScope Announcements


inSights Summer 2018
Rhiannon Vieceli

Rhiannon Vieceli


Humans of EarthScope: “I like making interpretations about the earth, which is the common denominator for everyone.”
Earthscope Globe

Media Advisory


Science Educators Gather in Anchorage to Learn about Teaching and Preparing for Earthquakes, Tsunamis, and Volcanoes in Alaska
Lidar data shown as vegetated landscape and as hillshade (bare surface).

EarthScope’s Laser Vision: Sharing Lidar Data


High-resolution images reveal fault movement—before and after quakes—to experts and students 
InSights announcements banner

EarthScope Announcements


inSights Spring 2018
The El Mayor-Cucapah earthquake rupture across a road

PBO Station Highlight: P496 Is Only One Piece of the Story


PBO station P496 not only shook during the 7.2 El Mayor–Cucapah earthquake in northwestern Mexico, but moved permanently as a result of it.
Installing an MT-TA station (NDD28) near New Johns Lake, North Dakota, on October 19, 2017. (Image courtesy of Fred Anderson, North Dakota Geological Survey)

Mapping North America’s Magnetic Personality


Completing a Cross-Country Dataset of Magnetotelluric Observations
Seismic waves translated into sound

Education Corner


We explore the senses in this issue, from visual resources for current events-based lessons, to mapping with lasers, to learning about seismic waves through sound. Bonus materials: What wildlife sets off seismic sensors?
Emily Hopper

Emily Hopper


Humans of EarthScope: "The stuff we’re researching is fundamental to how the whole planet functions."
Background: View of the Georgia Mountain Research & Education Center, where rural schoolkids come to learn about seismic monitoring (Photo by Rob Hawman). Inset: Fourth-grade students examine seismograms for an "earthquake" they have generated during an outdoor Environmental Field Day event at the center, which is near Blairsville, GA. (Image from Peggy Schneider, GMREC Community Council)



EarthScope seismic research inspires landowners and students in Georgia
EarthScope inSights header

EarthScope Announcements


inSights Winter 2017-18
Students learn firsthand, from UNAVCO field engineer Ryan Turner, how the GPS station at Olivelands Elementary School measures ground movement. The lesson includes discussing why monitoring plate movement is important for the students’ community. (Photo by Beth Bartel, UNAVCO)

PBO Station Highlight


Station OVLS introduces students to plate movement
Station Specialist Jason Theis explains some of the “brains” of the Transportable Array station. (Photo by Beth Grassi)

Inter-Agency Collaborations Take Center Stage at EarthScope Transportable Array Meeting in Alaska


New Alaska data reaches beyond earthquakes
Rob Hawman

Rob Hawman


I got into geology originally because I was always fascinated by the history of the earth.
Science Fair season is coming soon, giving students a chance to explore hands-on science. (Photo by Molly Tedesche)

Education Corner


Science Fair season is coming soon, giving students a chance to explore hands-on science. (Photo by Molly Tedesche)

In every inSights issue, we feature a few of the dozens of


Spatial variation in slip rate during 1984-1998 inferred from characteristically repeating microearthquakes. The 1989 Loma Prieta earthquake led to a long-term acceleration of fault slip. The yellow star is the 1998 Mw 5.1 SJB earthquake.

Creeps and starts on the San Andreas fault near San Juan Bautista


Want to dig deeper? Click on the "advanced" button in the article for scientific details.
P472: Engineering for Earthquakes

P472: Engineering for Earthquakes


PBO Station Highlight October 2017
EarthScope inSights header

EarthScope Announcements


inSights Fall 2017
Teaching Teachers at Alaska Earthquake Center, Fairbanks. (Credit M.Agopian)

Education Corner


In every InSights issue, ESNO features two of the dozens of tools, modules, and activities that utilize EarthScope data to benefit a wide variety of users (K–12, university educators, informal programs like museums or after-school programs).
Looking up from below and northward along the San Andreas fault zone in the vicinity of the SAFOD core. The drill site, marked by a star, is projected on the green and tan ground surface. Multiple strands of the San Andreas fault are mapped with black lines. The red path of the main SAFOD line intersects the fault at depth, where numerous earthquakes (shown as white balls) happen continuously. (Image from L. Blair, U.S. Geological Survey)

Tracking the Fluids in a Weak Fault


EarthScope’s San Andreas Fault Observatory at Depth reveals the pathways of fluids carried along the fault’s fracture network
Elliot Wilson of Pioneer Earthworks operates the drill at Alaska Transportable Array station D27M. (Photo by Max Enders, IRIS).

EarthScope's Transportable Array Spans Alaska, the Last Frontier


Elliot Wilson of Pioneer Earthworks operates the drill at Alaska Transportable Array station D27M. Photo by Max Enders, IRIS.

Loading gear at Beluga Lake. (credit: S.Tewksbury)

A Writing Intern in the Field


As the science writing intern for the EarthScope National Office, field work is not generally a part of my job.
Access to SALMON station SALA in western Cook Inlet, showing challenging conditions. At high tide, all the rocks in view are underwater. Here a three-wheeler pulling a trailer is being driven onto the boat at a falling tide. Note the typical bluffs in the background; these bluffs posed challenging access to sites on top.(Credit C.Tape)

By road, boat, plane and helicopter: Creating a remote seismic measurement network


Want to dig deeper? Click on the "advanced" button in the article for scientific details.
UNAVCO Data Tools

Data Tools


Introducing a new how-to video series for accessing UNAVCO's geodetic data
Photo by U.S. Coast Guard Lt. Cmdr. Nahshon Almandmoss Pavlof volcano erupts on March 28, 2016. The photo was taken looking northeast from a Coast Guard Hercules aircraft at 20,000 feet.

The Quiet After the Storm


How EarthScope’s infrasound and seismic capabilities monitor evolving volcanic eruptions
PBO Station P085

P085: Tiny Motions Matter


PBO Station Highlight Summer 2017
Barry White installing an infrasound sensor

Transportable Array Equips Stations with Infrasound Sensors


by Andy Frassetto and Kasey Aderhold, IRIS - NSF # SAGE: 1261681, MRI-R2: 0960275 | Summer 2017

Observations of infrasonic signals have…

Dillingham outreach

Summer 2017 Education Corner


In every InSights issue, ESNO features two of the dozens of tools, modules, and activities that utilize EarthScope data to benefit a wide variety of users (K–12, university educators, informal programs like museums or after-school programs)
EarthScope inSights Header

EarthScope Announcements


inSights Summer 2017
Ghost Forest

EarthScope's Final National Meeting


A culmination of 15 years of expansive geoscience research
PBO Site

AB50: Quick Responder


PBO Station Highlight May 2017
Wagner Checking Data at Station

Earthquakes on a Passive Margin


How EarthScope data help reveal the roots of anomalous seismic zones in the southeastern U.S.
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EarthScope Announcements


inSights Spring 2017
Seismology in the Classroom

Seismology in the Classroom


A new online course connects teachers across Alaska to real-time seismic data
Classroom Outreach

Spring 2017 Education Corner


In every InSights issue, ESNO features two of the dozens of tools, modules, and activities that utilize EarthScope data to benefit a wide variety of users (K–12, university educators, informal programs like museums or after-school programs)
(a) Physics-based conduit model.  (b) Some depth-dependent properties inferred by solving the physics-based conduit model.  As magma ascends and depressurizes, the solid volume fraction increases due to crystallization, in part causing the velocity to change from viscous flow to frictional sliding.

Probing volcanic systems with Bayesian inversion using physics-based models


Science Nugget - By Paul Segall (Stanford University), Ying-Qi Wong (Stanford University), Kyle Anderson (U.S.G.S.) - NSF # EAR 1358607 | 2014-2017


A calving event at Yahtse Glacier in Icy Bay, Alaska, sends a seismic wave through the ice. Seismologists are using these seismic signals to determine when and why calving occurs. Photo by Tim Bartholomaus.

Calving Season


How EarthScope seismometers help track glacier breakdown
Turnagain Arm, Alaska

EarthScope National Meeting 2017


The last EarthScope National Meeting will be held in Anchorage, Alaska from May 16-18, 2017.

EarthScope Announcements


inSights Winter 2017
P208 in California. Credit UNAVCO

Salt Canyon, California


PBO Station P208 watches the grass grow...literally
The Alaska Transportable Array deployment coordinator, field operations managers, and station specialists. Photo credit: Maria Sanders, Jeremy Miner, and Ryan Bierma

The Alaska Transportable Array Team


Achieving Success in Challenging Environments
PBO monument P360 uses GPS technology to monitor snow depth in Island Park, Montana. This station, powered by a solar panel, is one of 100 used by researchers to measure snow depth using GPS. Credit: UNAVCO

Improving Snow-Depth Forecasting with EarthScope’s Plate Boundary Observatory


by Gail McCormick - Winter 2017

USA STEM Festival, 2016

Winter 2017 Education Corner


In every InSights issue, ESNO features two of the dozens of tools, modules, and activities that utilize EarthScope data to benefit a wide variety of users (K–12, university educators, informal programs like museums or after-school programs)
Photo by U.S. Coast Guard Lt. Cmdr. Nahshon Almandmoss Pavlof volcano erupts on March 28, 2016. The photo was taken looking northeast from a Coast Guard Hercules aircraft at 20,000 feet.

Volcano study examines relationship between seismic signals, sound waves


By Sue Mitchell - University of Alaska Fairbanks Press Release - January 17, 2017 (

A study of relationships between seismic signals and sound


Borehole strainmeter B030, Fall Creek, Oregon.

Fall Creek, Oregon


Borehole strainmeter B030 records slip around the world
The Dempster Highway winds southward in the distance from station TA.G30M, situated north of the Arctic Circle.

Driving the Dempster


The Transportable Array deploys along a remote Canadian “highway”
Instruments near the summit of Mount St. Helens capture its every move. (photo credit: Beth Bartel, UNAVCO)

Watching a Volcano Breathe


Plate Boundary Observatory monitoring networks on Mount St. Helens
iMUSH project panorama

The Multi-Chambered Heart of Mount St. Helens


Enhancing earthquake detection and imaging beneath the volcano
USA STEM Festival, 2016

Fall 2016 Education Corner


For every InSights issue, we feature two of the dozens of tools, modules, and activities that utilize EarthScope data to benefit a wide variety of users. We intend to reach K–12 and university educators, as well as informal programs like museums.

Good Times, Better Ages


How the EarthScope AGeS program evolved
PBO station Highlight

Triangulation Point, Oregon


PBO Station P405 battles the elements at an energetic plate boundary
STEM Festival in Washington DC

Getting Hands On With EarthScope


By ESNO - Spring 2016

"Wow, it's moving!" was called out frequently in the busy hall that housed the largest (and free!) national science festival. More than 365,000 people of all ages and

PBO AC55 station

Creeping Calamity


Using the Plate Boundary Observatory to monitor landslide motion. GPS Station AC55 in Alaska was moving more than expected. Some movement was normal due to tectonic plate movement and residual motion from previous earthquakes—other GPS stations...

A Magnetic Meeting of Space and Earth


Magnetic storms, triggered by the interaction of the solar wind with Earth’s magnetosphere, not only produce our aurora light shows, but can also induce electric fields in our planet’s subsurface.
USA Festival

Summer 2016 Education Corner


Over the years, an array of tools, modules, and activities applying EarthScope scientific data have been developed for a wide variety of users. K–12 and university educators, or informal programs like museums, can benefit from these resources.
Teleseismic P-wave cross-section (Humphreys et al., 2015), with Rayleigh wave image of crust (Shen et al., 2013). Wyoming high-velocity mantle extends to ~300 km.

Recent Craton Growth by Under-accreting an Ocean Plateau Beneath Wyoming


Science Nugget - By Eugene Humphreys (University of Oregon Eugene) and Robert van der Hilst (MIT) - NSF # EAR 952194 | 2010-2012

Seismic tomography images high-velocity…

Earthscope Globe

Crustal Strength Profiles Across the Brittle-Ductile Transition


Science Nugget - By John Platt (University of Southern California) and W. M. Behr (University of Texas Austin) - NSF EAR # 0809443 | 2008-2012 

In this project we…

Vertical velocities predicted by model selection (statistical, s-model) using GPS data and the best-fitting physical deformation model (p- model) simulating the vertical crustal response of earthquake cycle loading at depth throughout the past 300 or more years.

The Vertical Fingerprint of Earthquake Cycle Loading in Southern California


Science Nugget - By Bridget Smith-Konter (University of Hawaii at Manoa), David Sandwell (Scripps Institution of Oceanography), Xiaopeng Tong (University of Washington…

Sliced view of present-day (calendar year 2011) Coulomb stress accumulation model of the San Andreas Fault System based on interseismic stress accumulation rate model.

Locked, Loaded and Looming?


Exploring earthquake cycle stress history of seismically active faults of the San Andreas Fault System
Figure 1. About 16,000 pairs of shear wave splitting parameters in the study area. The orientation of the red bars represents the fast polarization direction, and the length is proportional to the splitting time (Liu et al., 2014).

Mantle Anisotropic Structure and Dynamics Beneath the Western United States


Constraints from Shear-wave Splitting Analysis
Seismic velocity in the Earth along the slice BB’.  Red area contains material with low velocities that is rising up from deep in the Earth.

Hot, Wet Mantle Below the New Madrid Seismic Zone


Science Nugget - By Charles Langston (University of Memphis), Christine Powell (University of Memphis), Steve Horton (University of Memphis), Heather Deshon (Southern Methodist…,

Jenny Nakai with seismometer.

Lights, Cameras, Action!


EarthScope Stories Chronicled on Video
spatial and temporal variations in fault slip near the 1998 Mw 5.1 earthquake that is the largest instrumentally observed earthquake in the San Juan Bautista area (Taira et al., 2014)

Imaging of Slow Fault Movements with Microearthquakes


Variability of Fault Slip Behavior Along the San Andreas Fault in the San Juan Bautista Region
Uppermost mantle isotropic velocity structure beneath USArray from Pn tomography.

Uppermost mantle seismic velocity structure beneath USArray


Science Nugget - By Jeanine Buehler (University of California San Diego) and Peter Shearer (University of California San Diego) - NSF EAR # 1358510 | 2014 


IRIS 2016 workshop participants gathered in Vancouver, WA, for a week of scientific presentations, discussions, field trips, and workshops.

IRIS 2016 Workshop


Highlights Emerging Fields and Technologies in Seismology
PBO Station AV03

Augustine Island, Alaska


PBO Station AV03 Takes a Blow

2016 AGeS Awardees


Summer 2016

The EarthScope AGeS (Awards for Geochronology Student Research) program is a multi-year educational initiative aimed at enhancing interdisciplinary, innovative, and high-impact

Site map of the MT Array in AK

To Boldly Go… EarthScope Firsts in Alaska


While staying true to its intent as a telescope to peer into Earth’s interior, EarthScope has also been looking up to the heavens.
UNAVCO banner

2016 UNAVCO Science Workshop


New Uses for the Plate Boundary Observatory


The 2002 Denali earthquake surface rupture crosses alluvial fans, as imaged in EarthScope lidar data.

Drawing Lines from the Air


High-resolution Topographic Data Comes of Age
Installing a continuous GPS station at Macmillan Pass, Canada.

Mackenzie Mountains Mystery: New EarthScope Project Peers Underneath an Unlikely Mountain Range


By Kerry Klein - Winter 2016

At first blush, the Mackenzie Mountains in northern Canada could be the Rocky Mountains’ long lost sibling. They appear just as angular and…

Installed seismometer and continuous GPS site. Canada

Supporting Earth Science in the Canadian Sub-Arct


By Justin Sweet - Winter 2016

Canada’s Yukon and Northwest Territories are not known as hospitable land. This sub-arctic region, home to the Mackenzie Mountains project, presented

Station AC46

Back to Mothership


How PBO data get from Everywhere to somewhere
Earthscope Globe

The Cascadia Initiative: A Sea Change in Seismolog


By Cascadia Initiative Expedition Team (CIET)[] - Winter 2015


The increasing public awareness that the

Field trip

ES National Meeting, June 2015


By ESNO - Fall 2015

The 2015 EarthScope National Meeting in Stowe, Vermont showcased pioneering EarthScope studies in poster and talk sessions, preceded by an optional pre-meeting field

ESNO in Fairbanks

Fall 2015 Announcements


Meet the New EarthScope National Office

Over the next four years, the EarthScope National Office (ESNO) at the University of Alaska Fairbanks will focus on bringing EarthScope science to

Install in Alaska. Klein

Alaska Bound


Transportable Array migrates northward
reelfoot rift

Underground Clues Help Explain an Old Earthquake Mystery


By Adam Mann - Fall 2015

In 1811 and 1812, the New Madrid earthquakes destroyed homes and buildings through northeast Arkansas and the Missouri Bootheel. According to…

The accelerometer installed at P248, clamped to the vertical leg of the GPS monument. (Photo Doerte Mann, UNAVCO)

Low-Cost Additions to the Plate Boundary Observatory for Earthquake Early Warning


By Doerte Mann and Beth Bartel - Spring 2015

One of the major benefits of the Plate Boundary Observatory (PBO) is its contribution to prototype Earthquake Early Warning systems (EEW).

Location of broadband seismic stations operating in the continental US before EarthScope (white circles). The Transportable Array leaves behind 260 new “legacy” stations (all non-white circles).

The Legacy of the USArray Transportable Array


By Andy Frassetto, IRIS - Spring 2015

In the fall of 2003, before EarthScope began, approximately 200 modern broadband seismic stations operated across the contiguous United States,

Earthscope Globe

A Coast-to-Coast View of the Mantle Beneath the United States


By Brandon Schmandt, University of New Mexico and Fan-Chi Lin, University of Utah - Spring 2015

One of the major observational components of the EarthScope program is the…

Earthscope Globe

EarthScope Science and Disaster Preparedness


Engaging Educators in EarthScope Science and Disaster Preparedness Through Professional Development Workshops in Coastal Cascadia


Earthscope Globe

The EarthScope Decade Symposium


Celebrating Ten Years of Geoscience Accomplishments
Magnetotelluric Transportable Array and Backbone Location

USArray Continues Field Activities in 2014


By Perle Dorr, IRIS - Summer 2014

Since the completion of the Transportable Array in the Lower 48 during fall 2013, USArray has focused on the creation of the Central and Eastern US

Earthscope Globe

New Active Earth Monitor Content Set


Midcontinent Rift Available in Spring 2015
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Teaching Educators: PBO Data and Classroom Resources


by UNAVCO - Fall 2014

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Workshop Report: Modern and Ancient Basement Arches and the Connection to Flat Slab Subduction


By Megan Anderson (CC), Kate Miller (TAMU), Susan Beck (UA), and Margarete Jadamec (UH) - Fall 2014

The structural dissimilarity between basement-involved arches and thin…

Earthscope Globe

New EarthScope Geochronology Graduate Student Research and Training Program


Organizers: Rebecca Flowers (CU), Ramon Arrowsmith (ASU), Jim Metcalf (CU), Blair Schoene (Princeton), Tammy Rittenour (USU) - Fall 2014

The EarthScope Institute on…

Earthscope Globe

Using the Midcontinent Rift as a Unifying Theme for Park Interpreters and Educators


By Seth Stein, Carol Stein, and Eunice Blavascunas - Fall 2014

One of EarthScope’s major targets is the Midcontinent Rift (MCR), a 1.1 billion-year-old scar along which…

Earthscope Globe

Transportable Array Contributes to the Central and Eastern US Network


By Perle Dorr, IRIS - Spring 2014

The National Science Foundation is funding the creation of a Central and Eastern US Network (CEUSN) for the purpose of obtaining long-…

Earthscope Globe

Earthquakes and Human Activities Addressing Public Concerns


North Texas Earthquake Study Group, Southern Methodist University - Spring 2014

There is currently public, scientific, and policy concern regarding the recent increased…

Earthscope Globe

Stability of PBO GPS Monument Types


Project Highlight
Earthscope Globe

PBO Weighs California’s Water Resources


By Donald Argus, Yuning Fu, and Felix Landerer - Summer 2014

Approximately 500 sites in California, most of which are part of the Plate Boundary Observatory, are weighing…

Dark, ash-covered snow near the summit of Shishaldin Volcano in the Aleutians is evidence of ongoing low-level eruptive activity near PBO’s AV37 GPS station. (Photo/Ryan Bierma, UNAVCO)

Helicopter Fieldwork in the PBO Alaska Region


By Ellie Boyce - Summer 2014

With high-elevation GPS stations melting out of the snow and the weather becoming milder, the PBO Alaska region began annual helicopter-based…

Earthscope Globe

New Flexible Array Video Series


By ESNO - Winter 2014

Geology might not be the first thing that comes to mind if you heard the names SESAME, CAFÉ, SUGAR, and OIINK, but these are just a few examples of…


Earthscope Globe

Hitting Hot Water with PBO Borehole Strainmeters in the Yellowstone Caldera


By Glen Mattioli and David Mencin - Winter 2014

Data from the Yellowstone Gladwin Tensor strainmeter (GTSM) network are improving the understanding of the structure of…

Earthscope Globe

USArray Reaches the East Coast


By Maureen Long and Vadim Levin - Winter 2014

On October 1st 2013 the seismic and magnetotelluric observatory network USArray, which is a key element of the EarthScope…

Earthscope Globe

EarthScope Northeastern Interpretive Workshop


By ESNO - Fall 2013

Twenty-six interpretive professionals listened intently as Park Ranger Stephanie Kyriazis (photo) relayed the glacial history of Acadia National Park…

Earthscope Globe

USArray Looks Back as it Looks Ahead


By IRIS - Fall 2013

Ten years ago, the construction of USArray observatories officially began. This followed numerous community meetings, countless hours of meticulous…

Earthscope Globe

Monitoring Surface Deformation at Long Valley Caldera, California


By Kang Hyeun Ji - Fall 2013

Continuous monitoring of volcanic activity provides a way to detect changes from usual activity, provide warning impending eruptions, and…

Earthscope Globe

PBO Multiple Monument Comparison Project


By UNAVCO - Summer 2013

PBO Change Order 35 authorized UNAVCO to construct two additional geodetic monuments at five existing PBO stations in order to test and compare…

Earthscope Globe

SPREE: A Seismic Study of Continental Modification


Trevor Bollmann, Emily Wolin, Suzan van der Lee, and the SPREE Team - Summer 2013

Northwestern University, Washington University in St. Louis, the University of Minnesota…

Earthscope Globe

USArray - Alaska Deployment Planning


Terry Pavlis, UTEP - Spring 2013

On February 19 and 20 approximately 50 geoscientists met at the Pacific Geoscience Center in Sydney, British Columbia, to discuss…

Earthscope Globe

USArray Infrasound Data Products at IRIS


By Manochehr Bahavar and Chad Trabant - Summer 2013

Diverse natural and man-made acoustic sources such as large explosions, rocket launches, and meteorites can act as…

Earthscope Globe

USArray Status


By Perle Dorr, IRIS

With operating stations blanketing the southeastern states, the Transportable Array is on target to complete its journey across the contiguous US and…

Earthscope Globe

Deformation of the Wasatch Fault System


Plate Boundary Observatory Data
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Chelyabinsk Meteor lit up the Transportable Array


By Catherine D. de Groot-Hedlin and Michael Hedlin - Spring 2013

The large meteorite that entered Earth's atmosphere above Chelyabinsk, Russia last month drew attention…

Earthscope Globe

InTeGrate: Interdisciplinary Teaching of Geoscience for a Sustainable Future


Cathryn A. Manduca - Winter 2013

InTeGrate is an NSF sponsored community effort to support the teaching of geoscience in the context of societal issues both within…

Earthscope Globe

Chlorite-Smectite Clay Minerals and Fault Behavior


Evidence from the San Andreas Fault Observatory at Depth (SAFOD)
Earthscope Globe

USArray Detects Hurricane Sandy


By IRIS - Winter 2013

The USArray’s Transportable Array (TA) seismometers and barometers have documented ground motion and atmospheric pressure changes due to Hurricane…


Earthscope Globe

EarthScope National Office Hosts EarthCube Conference


By Dr. Mike Gurnis, Caltech - Fall 2012

Sixty scientists met at Arizona State University on October 29 and 30 and discussed the current state and future potential for the…

Earthscope Globe

PBO GPS Updates


By Glen Mattioli, UNAVCO - Fall 2012

Currently, there are 1120 GPS sites and 28 tilt meters, as well as numerous other strainmeters actively measuring deformation. In…

Earthscope Globe

Understanding Continental Evolution using Data from the Transportable Array


By Dr.Hersh Gilbert - Fall 2012

Do high mountains possess thick roots of low-density crust that keep them a"oat in the denser mantle, or do zones of low-density mantle…

Earthscope Globe

EarthScope Interpretive Workshop - Central Appalachian Region


Photo above, courtesy of Wendy Taylor

Hosted by James Madison University (JMU) and organized by ESNO, this workshop featured…

Earthscope Globe

EarthScope and Place-Based Education


By Steven Semken - Summer 2012

When we affix meaning to any physical locality—by naming it, building a home there, exploring its geology and geophysics as EarthScope…

Earthscope Globe

EarthScope and GeoPRISMS Complimentary Research and Joint Planning


By Ramon Arrowsmith, ESNO Director - Summer 2012

A balance between EarthScope-centric data gathering, science, and the interests and capabilities of other complementary communities is

Earthscope Globe

Mineral, VA Earthquake Demonstrates the Passive Aggressive Margin of Eastern North America


By Meghan Berg - Spring 2012

On August 23, 2011, the Mw 5.8 Mineral, Virginia, earthquake rocked the east coast of the U.S. While moderate in comparison to recent mega-…

Earthscope Globe

Tales from the Field: PBO Installation in Alaska


Max Enders - Spring 2012

When UNAVCO set about building the Earthscope Plate Boundary Observatory (PBO) no challenge was nearly as daunting as the prospect of installing…

Earthscope Globe

EarthScope Social Media Blitz


By ESNO - Spring 2012

Social media sites have emerged as a popular and effective form of communication among all age groups, with more than half of the teenage and adult…

Earthscope Globe

Spring 2012 Facilities Status


Spring 2012

USArray Status

The Transportable Array (TA) continues to roll eastward across the US. Having crossed the Mississippi River in March 2011, the TA will…


Earthscope Globe

EarthScope Participates in Open Data Seismic Deployment Following 2010 Chile Earthquake


The global seismology community established a new model of international cooperation in response to the great Chile earthquake of February 27, 2010. The adaptable framework is geared to produce a high-quality, open-access data set of seismic waveforms col
Earthscope Globe

Seismic Tomography with USArray Data


In its July 2011 issue, Popular Science ranked EarthScope the “most epic” big science project because of its ambitious scope: Exploration of the deep geologic structure and evolution of an entire continent.
Earthscope Globe

Fluid Pressure Spikes in SAFOD Rocks as Evidence of Microseismicity


The San Andreas Fault (SAF) deforms by permanent creep and microseismicity in central California. Higher-thanhydrostatic fluid pressures, which could explain low strength and creep, were not detected during the San Andreas Fault Observatory at Depth (SAFO


Earthscope Globe

Using GPS to Measure Soil Moisture, Snow Depth and Vegetation Growth


GPS data collected as part of PBO, though, contain additional information that is very useful in ways unforeseen when the original PBO science plan was created.
Strain rate, which is typically greatest within 10-50 km of an active fault, is calculated by taking the spatial derivative of measured crustal velocities.

Integrating GPS & InSAR to Resolve Stressing Rates Along the San Andreas System


By Bridget Smith-Konter, David T. Sandwell, and Meng Wei - Summer 2010

New estimates of seismic hazard (e.g., UCERF, will rely on high…, ,

Figure 2: Interferogram of the April 2010 earthquake in Baja California, Mexico, from ALOS PALSAR (Advanced Land Observing Satellite Phased Array type L-band Synthetic Aperture…, , ,

Figure 3: Remove-stack-restore interferograms for the Salton Sea area. (a) Physical model constrained by GPS data. (b) Stacked residual interferograms after applying the…,


Bird, P. (2009), Long-term fault slip rates, distributed deformation rates, and forecast of seismicity in the western United States from joint fitting of…

Earthscope Globe

U-Pb Thermochronology: 4-Dimensional Imaging of the North American Lithosphere


As the USArray Transportable Array marches eastward, seismic images are providing ever more detailed insight into present day structures of the crust and mantle beneath North America. But how old are these structures and what do they tell us about the geo