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The science of earthquake and deep-Earth research.
  1. Earthquake Magnitudes
  2. Forensic Seismology
  3. Infrasonics Links

Seismic Instruments
A look at the most important tools we use to study earthquakes.

Cores from the San Andreas Fault
Pictures from the history-making SAFOD drilling project into an active earthquake fault.

EarthScope is taking science three giant steps forward.

USArray, a Hubble Telescope Into Earth
A traveling seismic show aims to cover the whole country over ten years.

Schematic Diagram of Focal Mechanisms
About those seismic "beachball" diagrams that are a shorthand way of showing a quake's signature.

Birth of a Fault
A brand-new California fault is in the process of being formed.

A story of friction and a spectacular kind of fault.

Listening to Earthquakes
The sonification of earthquakes opens them to a whole different avenue of appreciation—and insight.

Introduction to Seismic Waves
A lucid illustrated text from the University of Nevada Reno.

Tsunamis and Earthquakes: What Physics Is Interesting?
Geoscientist extraordinaire David Stevenson talks at a high level to his fellow physicists about earthquakes and tsunamis in the June 2005 Physics Today.

History of Seismology Before 1910
Three quick pages from the University of California at Santa Barbara cover the era before the seismograph.

Fiber Optic Seismometer
The next frontier in seismometry is replacing the electronics with a cleaner, quieter optical system. Jose Otero, at Scripps Institution, is leading the way.

California Moment Tensors
Those beachball images, explained and displayed for California from 1993 to today.

Canadian National Seismographic Network
Home page for Canada's seismographic backbone.

Global Seismic Network
A program by IRIS to outfit the world with a network of standard seismographs.

IRIS Data Management Program
About the worldwide effort to collect and distribute seismic data.

Global Earthquake Explorer
GEE is an education and outreach tool for seismology that aims to make it easy for non-seismologists to retrieve, display and analyze seismic data.

Listening to Earthquakes
Recorded sounds, and explanation, from the USGS.

Mantle Tomography
How we take "ultrasound baby pictures" of the deep mantle.

"Memento Mori" Live Seismogram
An eerie live look at the data from a seismograph in the hills above Berkeley, California.

Mexican National Seismological Network
The master network of Mexican seismographic stations.

National Strong-Motion Program
Home page for this innovative USGS program.

Northern California Earthquake Data Center
Access to seismic data, including current seismograms, for Northern California.

The Program for the Array Seismic Studies of the Continental Lithosphere works to image the earth's crust.

Public Seismic Network
A loose web of amateur seismologists; this node is in California and links to the rest.

Seismometry Before 1900
The U.S. Geological Survey presents Dewey and Byerly's classic history of the field.

U.S. National Seismic Networks
Home page for the U.S. Geological Survey's networks of seismographs.

Virtual Earthquake
This interactive courseware at Cal State Los Angeles will teach you about epicenters and magnitudes like nothing else.

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