landslides

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Disaster Experts: A Journalist’s Guide

An all-purpose guide for journalists covering disasters, natural and manmade.

by |February 14, 2017
A side view of the June 28, 2016, Glacier Bay landslide. Photo: Paul Swanstrom/Mountain Flying Service.

Massive Landslide Detected in Glacier Bay’s Fragile Mountains

A 4,000-foot-high mountainside collapsed in Glacier Bay National Park this week in a massive landslide that spread debris for miles across the glacier below. Scientists at Lamont-Doherty Earth Observatory are studying it to improve understanding of landslide risks.

by |July 2, 2016
A big landslide in Alaska's Wrangell-St. Elias range in July was detected using the global seismic network,

Summer Heat Wave May Have Triggered Landslide on Lonely Alaskan Glacier

A massive landslide in Alaska’s snowy Wrangell-St. Elias mountain range in July may have been caused by a summer heat wave making some slopes more vulnerable to collapse, says the Lamont-Doherty scientist who first discovered the avalanche.

by |September 10, 2013
The 2009 Xiaolin landslide in Taiwan killed 400 people but went undetected for two days. (Xinhua News Agency)

A Library of Giant Landslides

A new method for detecting big landslides is allowing scientists to understand the dynamics of these elusive events almost instantly, without traipsing to remote mountains or scrambling up rugged peaks months, or even years, later. In a recent study in the journal Science, Göran Ekström and Colin Stark, geophysicists at Columbia University’s Lamont-Doherty Earth Observatory, have catalogued the 29 largest landslides since 1980 using satellite images and recordings from a global network of seismic instruments. A third of the avalanches are documented now for the first time.

by |April 1, 2013
A landslide in Nepal's popular Annapurna trekking region on May 5 killed 27 people. (Avia Club Nepal)

Investigating Giant, Unseen Landslides

Steep mountains produce some of the biggest landslides on earth but in such rugged terrain who’s around to notice? These monster back country slides are now gaining attention from far-away scientists, aided by a global network of seismic stations, earth-orbiting satellites and the crowd-sourcing power of the internet.

by |June 12, 2012
palisades rockfall 2012- menke

Lessons From a Rock Fall

A 500-foot-high sliver of the Palisades Cliff came crashing down May 12 at 7:28 p.m., jiggling our seismometer at the Lamont-Doherty Earth Observatory a few micrometers. Weighing about 10,000 tons, the rock smashed trees along the Hudson River and covered over a hiking trail, but fortunately caused no injuries.

by |May 21, 2012
McHughetal2011_Geology_Fig4y

Undersea Clues to Haiti’s Earthquake History

For all of its violent destruction, the earthquake that struck Haiti on Jan. 12, 2010, hardly scratched the surface of the island. But scientists now say they have found some of the best clues to understanding the quake under water.

by |July 21, 2011

Mudslides: Forecasting Risk

Landslides kill thousands of people each year but because they’re often triggered by earthquakes or heavy rains, the danger remains poorly understood. “In densely populated areas, landslides take no prisoners,” said Art Lerner-Lam, a scientist at Columbia University’s Lamont-Doherty Earth Observatory.  “They’ll wipe out an entire village at once. Even a small landslide can kill… read more

by |May 4, 2009