Science and Program Highlights Archive

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

2017 Sep 27th

IRIS Special Event Pages

IRIS Special Event web pages provide links to data products and images of data and materials available from IRIS programs and preliminary research results from the seismology community.   Continue Reading

2017 Aug 21st

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

The Southern Alaska Lithosphere and Mantle Observation Network (SALMON) is a two-year EarthScope FlexArray project. Using data recorded by 28 of PASSCAL’s broadband seismometers, the goal is to produce images of the crust and upper mantle to better understand active faulting, mantle flow and seismic structure in the Cook Inlet region.  Continue Reading

2017 Aug 14th

My Experience as an IRIS Alaska Transportable Array Intern

Follow IRIS intern Amin Abbasi through his adventures installing Transportable Array seismometers in Alaska!  Continue Reading

2017 Jul 11th

Detecting wind using seismometers

This research team is using seismometers to detect winds (both sustained winds and gusts) across a range of geographical settings.  Continue Reading

2017 Jun 13th

Increased seismic instrumentation provides insight into the Rio Grande Rift

New seismic stations help answer questions about the extent, deformation pattern and seismic activity of the Rio Grande Rift.  Continue Reading

2017 Jun 1st

Earthquakes and volcanoes of the Galápagos Islands

A temporary network of seismometers gives insight into earthquake activity and volcanic structure beneath the Galápagos Islands volcanoes.  Continue Reading

2017 Mar 31st

Linking Faults in Napa Valley and Beyond

Seismic data and gravity data suggest linkages between the West Napa Fault Zone and nearby faults, which has implications for the size of potential earthquakes along this system. Additionally, guided seismic wave amplification can cause concentrated regions of shaking and damage.  Continue Reading

2017 Mar 23rd

The Alaska Transportable Array Team: Achieving Success in Challenging Environments

Alaska’s TA stations offer a rare opportunity to collect information from remote regions. ​(Photo credit: Maria Sanders)  Continue Reading

2017 Mar 7th

Induced Earthquake Mitigation

This study is an example of how communication, collaboration and cooperation between scientists, industry professionals and regulators can help to mitigate induced earthquakes.  Continue Reading

2016 Dec 9th

IRIS Research Experiences for Undergraduates

IRIS summer interns complete their 19th year of conducting research under the guidance of IRIS Consortium members.  Continue Reading

2016 Dec 9th

Multiple Magma Reservoirs Beneath Mount St. Helens?

Ground motion recordings from regional earthquakes and artificial sources at ~6000 individual seismograph locations have been utilized to image the volcanic plumbing system beneath Mt. St. Helens.  Continue Reading

2016 Dec 9th

Data from Community Wave-field Demonstration Experiment Now Available

IRIS is pleased to announce that the data collected during the Community Wavefields Demonstration Experiment are now fully archived and available at the IRIS Data Management Center.  Continue Reading

2016 Nov 30th

New GSN Affiliate Station Begins Operations in Tajikistan

The IRIS GSN recently installed a new Global Seismographic Network affiliate station in Simiganch, Tajikistan. The installation and its ongoing operation are part of a new agreement between IRIS and the Academy of Sciences of the Republic of Tajikistan.  Continue Reading

2015 Oct 14th

IRIS and its Partners Conduct Seismic Data Workshop in Vietnam

Seismologists and seismic network operators from 19 Asian countries recently participated in a week-long training course on the management of data from seismic networks.  Continue Reading

2015 Jun 8th

2015 Field Activities Start in Alaska and Northwestern Canada

Earlier this spring, the Transportable Array team headed to the field to begin this year’s deployment in Alaska and Northwestern Canada.  Continue Reading

2014 Jul 24th

USArray Stories from the Field

Read essays about the experiences of USArray field crews, student siters, and others  Continue Reading

2014 Jul 10th

Seismology and Imaging Beneath Alaska: EarthScope’s Final Frontier

From late 2013 through 2018, the USArray Transportable Array will site, deploy, and operate seismograph stations throughout Alaska to image its deep geologic structure.   Continue Reading

2014 Feb 20th

OBSIP: Supporting the Cascadia Initiative and Improving Ocean Bottom Seismograph Data Quality

Final deployment of Cascadia instruments, July 2014.   Continue Reading

2013 Apr 15th

PULSE and CAUGHT: Seismology in the High Andes

Two complementary research projects are examining the processes of ocean-continent subduction and mountain building in the Central Andes of Peru and Bolivia.  Continue Reading

2013 Apr 15th

The Southeastern Suture of the Appalachian Margin Experiment (SESAME)

The SESAME project aims to better understand the effects of continental collision and rifting in the southern Appalachians.  Continue Reading

2013 Apr 15th

GLISN: International Team Investigates the Greenland Ice Sheet

The Greenland Ice Sheet Monitoring Network is an 11-nation collaboration initiated by IRIS to establish a new northern observatory for monitoring this rapidly changing ice sheet.  Continue Reading

2013 Apr 14th

Waves Generated by Russian Meteor Detected in the US

An extensive network of stations with seismometers and air pressure sensors detected the blast waves from the terminal burst of the meteoroid near Chelyabinsk as the waves crossed the US on 2/15/13.  Continue Reading

2012 Oct 29th

IDOR – Studying 100 Million Years of Mountain Building and Volcanism in Idaho and Oregon

The IDOR controlled-source field crew, who collected data across the mountain ranges and volcanic fields of Idaho and Oregon, was one of the largest and most diverse teams assembled for an IRIS-facilitated experiment.  Continue Reading