A nuclear test explosion set off last night by North Korea was far larger—perhaps by three or four times—than the country’s last known blast, say seismologists who have examined seismic waves coming from the site. The estimate suggests that the North Koreans are making steady progress toward building more forceful weapons.
nuclear test ban
|Name||Title||Fields of interest|
|Paul G. Richards||Special Research Scientist||Theory of seismic wave propagation, the physics of earthquakes, the Earth's inner core, improvements in estimating earthquake locations, monitoring underground nuclear explosions, nuclear arms control|
|Lynn R. Sykes||Higgins Professor Emeritus||Earthquake Studies, Control of Nuclear Weapons, Tectonics, Natural Hazards.|
|Won-Young Kim||Lamont Research Professor||Earthquakes in stable continental regions, regional seismic wave propagation, monitoring underground nuclear explosions, observational seismology|
February 12, 2013
April 16, 2010
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 luncheon on Wednesday, April 21.
May 27, 2009
Seismologists, Pinpointing Location, See Little Doubt It Was Bomb
Seismologists who have intensively studied North Korea’s nuclear testing efforts say Monday’s blast was certainly a nuclear bomb, roughly five times larger than the country’s first test in 2006.