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

Couldn’t go to this year’s Iditarod in Alaska?

Make plans to attend the
EarthScope National Meeting Anchorage
May 16-18, 2017

Register Now!

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Data from Community Wavefield 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

UPCOMING EVENTS Full Calendar

Jun 06 2017 Webinar - Lesson 1: Focus on the Petroleum Industry Virtual
Jun 08 2017 Webinar - Lesson 2: Introduction on Play Elements Virtual
Jul 13 2017 IRIS/SSA Distinguished Lecture Series North Carolina Museum of Natural Sciences, Raleigh, NC
Jul 26 2017 IRIS/SSA Distinguished Lecture Series Oregon Museum of Science & Industry, Portland, OR
Aug 07 2017 USArray Short Course - Oklahoma Wavefields Indiana University, Bloomington, IN
Earthquake Resources

SEISMIC MONITOR

Seismic Monitor

Go to Seismic Monitor

Earth Science FAQ’s

Do you have questions about earthquakes or seismology? Are you interested in learning more about Alaska or Cascadia? Visit our new and improved FAQ page!

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Animations

Modern seismometers include 3 elements to determine the simultaneous movement in 3 directions: up-down, north-south,and east-west. Each direction gives information about the earthquake. This animation shows both the movement of the three basic waves (P, S, and surface) and the effect of the waves on a building.

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SCIENCE AND PROGRAM HIGHLIGHTS

Linking Faults in Napa Valley and Beyond

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.
Induced Earthquake Mitigation

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.
Multiple Magma Reservoirs Beneath Mount St. Helens?

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.