Earthquakes9
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Listening to Earthquakes – From Inside the Earth
Lamont scientist Ben Holtzman and the Seismic Sound Lab take viewers on an entirely new sensory experience to see, hear and feel earthquakes from inside the planet.
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Harnessing Soil to Rebuild Rural Nepal
Within weeks of a devastating earthquake in Nepal, governments and private groups pledged $4 billion in aid. And something else emerged from the rubble: a grassroots movement to rebuild rural Nepal safely and sustainably.
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Top Seismology Award Goes to Pioneer in Rock Mechanics: Christopher Scholz
For his pioneering work in rock mechanics and his skill at communicating earthquake science, Scholz is being honored on April 20 by the Seismological Society of America with its top award, the Harry Fielding Reid Medal.
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The Earth Shook, but It Wasn’t an Earthquake
Last Thursday, thousands of people on the Eastern Seaboard felt the earth tremble. Seismologists at Columbia University’s Lamont-Doherty Earth Observatory quickly concluded it was not an earthquake, but a military exercise.
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Detecting Landslides from a Few Seismic Wiggles
Over the last six years, seismologists Göran Ekström and Colin Stark have been perfecting a technique for picking out the seismic signature of large landslides. They just discovered North America’s largest known landslide in many years – 200 million tons of sliding rock in Alaska.
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Ancient Faults & Water Are Sparking Earthquakes Off Alaska
Ancient faults that formed in the ocean floor millions of years ago are feeding earthquakes today along stretches of the Alaska Peninsula, and likely elsewhere, a new study suggests.
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Last Sample and Home
We finished our work at the river transect. Now we had one more sample to collect. Alamgir had arranged for drillers at this new site, but they were delayed because of a knife fight between two villages over some property.
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OSL Samples at Last
The success of the tube wells for drilling and obtaining samples was a great boon to our field program. We drilled three additional tube wells to complete a five-well transect across the abandoned river valley. When we date the samples, we will find out if the river switched position suddenly, possibly from an earthquake.
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Tubewells to the Rescue
The resistivity testing was hampered by bad roads and flooded fields. The augering was proving similarly difficult in the thick muds of the abandoned channel. It was time to change to our alternative plan: drilling with tube wells. That worked better and we had turned a corner.
AGU25, the premier Earth and space science conference, takes place December 15-19, 2025 in New Orleans, Louisiana. This year’s theme—Where Science Connects Us—puts in focus how science depends on connection, from the lab to the field to the ballot box. Once again, Lamont-Doherty Earth Observatory and Columbia Climate School scientists, experts, students, and educators are playing an active role, sharing our research and helping shape the future of our planet. #AGU25 Learn More
