Posted: November 2004
Title: Seismic swarm at Mount Saint Helens (as of 3:00 pm PDT, 9/30/04)
Contributed by: Rick Aster, Geophysics Program, New Mexico Tech
Text: The figure shown is a computer-based display of vertical seismic velocity recorded at the June Lake seismic station near the volcano ...(more)

Posted: October 2004
Title: The deep structure of the Earth's Mantle underneath the Rio Grande Rift, New Mexico.
Contributed by: Rick Aster, Geophysics Program, New Mexico Tech
Text: The RISTRA 1 experiment was a 1999-2001 950 km-long NSF-funded deployment of 54 seismographs with approximately 18 km station spacing across the southwestern U.S., approximately between Lake Powell, UT and Pecos, TX. The seismographs, provided by the IRIS PASSCAL program, recorded seismic signals from naturally occurring earthquakes from around the world and used these seismograms to image the deep earth. ...(more)

Posted: September 2004
Title: Ground shaking caused by Hurricane Ivan
Contributed by: South Carolina Earth Physics Project
Text: Hurricanes can easily be recorded by seismographs, and before the days of satellite images, seismographs were sometimes used to track the storms ...(more)

Posted: September 2004
Title: EarthScope Transportable array stations now being installed
Contributed by: Marcos Alvarez
Text: EarthScope is installing a dense array of seismographs across the
continental US and Alaska. The array will consist of 400 transportable
broadband seismic stations that will advance across the country....(more)

Posted: August 2004
Title: Ivrea Zone, Italy - the Moho exposed?
Contributed by: Seth Stein
Text: The Mohorovicvic discontinuity, or Moho, defines the boundary between the crust and mantle...(more)

Posted: August 2004
Title: White Sands National Monument
Contributed by: Aaron Velasco, University of Texas, El Paso
Text: View in White Sands National Monument, New Mexico, located approximately 80 miles north of El Paso Texas....(more)

Posted: July 2004
Title: "Kilbourne Hole, New Mexico"
Contributed by: Aaron Velasco, University of Texas, El Paso
Text: aerial view of Kilbourne Hole, located in southern New Mexico about 30 miles west of El Paso, TX....(more)

Posted: July 2004
Title: "Iceland - the Mid-Atlantic ridge above water"
Contributed by: Seth Stein, Northwestern University
Text: View from the North American plate (west) side across the axial rift valley at Thingvellir, Iceland.....(more)

Posted: June 2004
Title: "Uplifted Reef Corals, Solomon Islands"
Contributed by: Kathy Elliins, UTIG
Text: In the tectonically active SW Pacific, emergent coral reefs serve as excellent recorders...(more)

Posted: May 2004
Title: "Specialized Ocean-bottom Seismometer (OBS)"
Contributed by: Kathy Elliins, UTIG
Text: University of Texas at Austin Institute for Geophysics (UTIG) has developed a specialized ocean-bottom seismometer...(more)

Posted: April 2004
Title: "The U.S. Geological Survey Community Internet Intensity Map (CIIM), or
"Did You Feel It?"
Contributed by: Lisa Wald, USGS
Text: Citizen Science webpage has been online for about 5 years, and in that time, 440,000 Internet users...(more)

Posted: April 2004
Title: Rigid North America and its western plate boundary zone
Contributed by: Seth Stein
Text: An important premise of the theory of plate tectonics is that that large regions...(more)

Posted: March 2004
Title: Pyroclastic Flow, Montserrat
Contributed by: Amanda Clarke , Arizona State University
Text: Earthquakes accompany volcanic activity, and seismology can help volcanologists monitor and predict eruptions....(more)

Posted: March 2004
Title: Seismic Station on the Navajo Nation
Contributed by: Steven Semken, Arizona State University
Text: The seismic monitoring station shown here was deployed on the Navajo Nation in northwest New Mexico...(more)

Posted: February 2004
Title: "Build Your Own Seismograph" Lab
Contributed by: Alan Kafka, Boston College
Text: Here we see results from a "build your own seismograph" lab in a science course for students...(more)

Posted: February 2004
Title: San Simeon, California Earthquake - Dec. 22, 2003
Contributed by: Alan Kafka, Boston College
Text: The San Simeon, California earthquake was well-recorded by the AS1 seismograph operating at Boston College...(more)

Posted: January 2004
Title: Effects of the 1959 Hebgen Lake, Montana earthquake
Contributed by: Seth Stein, Northwestern University
Text: This Mw 7.5 earthquake triggered an enormous landslide that buried a campground, causing 28 deaths... (more)

Posted: January 2004
Title: LESSONS LEARNED FROM EARTHQUAKES IN CALIFORNIA AND IRAN
Contributed by: Alan Kafka
Text: In December 2003, earthquakes of similar magnitude occurred in Bam Iran and San Simeon, California... (more)