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

First Release of Data from Mars InSight Now Available

The first data from the Mars SEIS (Seismic Experiment for Internal Structure) instrument is now available from the IRIS Data Management Center, in parallel with the NASA’s Planetary Data System and the IPGP’s Mars SEIS Data Service. Continue Reading

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

NEWS AND ANNOUNCEMENTS

2019 Board of Directors Election Results Dec 12
IRIS and SSA Seek Nominations for 2021 Distinguished Lectureship Series Dec 6
IRIS Presidential Search Nov 14
IRIS Data Management Center Moves to New Office Location Nov 5

UPCOMING EVENTS

Jan 29 WEBINAR: Fiber-optic Seismology in Theory and Practice
Virtual
Feb 12 WEBINAR: Seismology in Alaska: Earthquakes, bears, and high-performance computing
Virtual
Mar 4 IRIS/SSA Distinguished Lectureship Series
Discovery Museum, Science Distilled (Reno,Nevada)
Earthquake Resources

Seismic Monitor

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New Animation! Cascades Subduction Zone—What can the landscape tell us?

This animation describes the geographic provinces of the Pacific Northwest, including the subducting plate, the subduction boundary, the Coast Range, the lowlands, and the Cascades mountain range.

New Animation: Haiti, 10 years after the earthquake

This animation discusses the tectonic setting, the history of M7+ earthquakes in Haiti, and the aftermath of the earthquake.

SCIENCE AND PROGRAM HIGHLIGHTS

Rainy days make glaciers move and shake

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.
How thick is the lithosphere under the southeastern US?

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.

MEMBER HIGHLIGHT

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

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.
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