Tag: seismology

Rolling into Open Water in the Central Pacific

by | 12.5.2011 at 8:48pm
The Langseth at dock in Honolulu.  Bridge cabins/labs are to the right; waist-deck where OBS operations occur is in the center; and the large aft streamer platform is on the left.  Top center is the PSO observation tower, over 85 ft above the waterline.

We nicknamed our project NoMelt because we seek to characterize a mature, pristine oceanic plate far from its volcanic origin at a Mid-Ocean Ridge, and away from areas of pronounced volcanism and melting that subsequently alter the structure of the plate.  Our site in the central Pacific fits these scientific needs. However, one downside is [...]

Probing an Oceanic Plate

by | 11.30.2011 at 8:36am | 4 Comments
Google Earth map of the experiment (dubbed NoMelt) in the central Pacific Ocean basin.

Everything that we understand about the rhythms of the Earth’s surface – the slow growth of mountain chains, the creeping expansion of the ocean basins, the abrupt upheaval of a major earthquake, the explosive eruption of a volcano – is viewed through the context of plate tectonics.  This simple yet highly successful model for describing [...]

Paul Richards Wins Seismological Society of America’s Reid Medal

by | 4.16.2010 at 8:56am

In a research career spanning more than four decades, Paul Richards, a seismologist at Lamont-Doherty Earth Observatory, has helped uncover Earth’s inner structure and advanced techniques for detecting nuclear explosions to ensure that bans on nuclear testing can be enforced. Richards will receive the Seismological Society of America’s Harry Fielding Reid medal at its annual [...]

Witnessing the Desperation of the Poor

by | 1.22.2010 at 11:52am

At the moment the Haiti earthquake struck, two Earth Institute staffers were in Port-au-Prince assessing how to make the country less poor, and less vulnerable to natural disasters. Marc Levy and Alexander Fischer of the Center for International Earth Science Information Network were working with the Haiti Regeneration Initiative, a nascent program to repair Haiti’s [...]

Needed in Haiti: Reinforced Buildings—and Economy

by | 1.21.2010 at 4:38pm | 2 Comments

The Jan. 12 Port-au-Prince earthquake is almost unique in modern history. It is about the worst natural extreme to affect some of the worst-off people on earth.   What does disaster recovery mean when this happens? Poor countries suffer more from natural extremes like hurricanes, droughts and floods than do rich countries. Everything about richer countries [...]

Haiti: America’s ‘Teachable Moment’

by | 1.21.2010 at 3:05pm

President Obama is providing the leadership we need and hoped for in the face of the horror of the Haitian earthquake. The clearest evidence of American unity behind the effort to respond to the tragedy in Haiti took place at the White House on Saturday, Jan. 16, as Obama joined forces with two ex-presidents to [...]

Port-au-Prince and New Orleans

by | 1.20.2010 at 11:12am

Extremes of nature, like hurricanes and earthquakes, can occur almost anywhere. Their effect can be anything from a nuisance–the storm that ruins the seaside vacation–to the tsunami that takes more than a quarter of a million lives and ruins the livelihoods of countless more. Human losses are the most tragic of these disasters’ many consequences, [...]

How to Help Haiti Recover

by | 1.20.2010 at 11:07am | 1 Comment

President Obama has declared that the United States will not forsake Haiti in its moment of agony. Honoring this commitment would be a first for Washington. To prevent a deepening spiral of death, the United States will have to do things differently than in the past. American relief and development institutions do not function properly, [...]

The Haiti Earthquake

by | 1.15.2010 at 4:37pm | 4 Comments

The quake in Haiti came suddenly—but the results were predictable. At the moment it struck, scientists from the Earth Institute and other parts of Columbia University were in Port-au-Prince with a UN-sponsored project assessing how to reduce the nation’s obvious vulnerability to natural disasters. It is clear that the extreme toll came as much from poverty [...]

Reactions to Haiti Earthquake

by | 1.14.2010 at 9:52am | 3 Comments

Scientists from Columbia University’s Earth Institute and Lamont-Doherty Earth Observatory have provided some photographs and commented analysis of the earthquake in Haiti.