Tag Archives: seismic hazard

3-D Laser Map Shows Earthquake Zone Before and After

By Guest PostFebruary 10, 2012Science2010 mexicali earthquake, 3d post earthquake image, agricultural fields, arizona state university, austin elliott, borrego fault, China, colorado river, colorado river delta, crust, data, davis, desert floor, earth science, earthquake, earthquake zone, earthscope, fault, fault behavior, fault rupture, fault surface ruptures, floodplain, geologist, greg anderson, indiviso fault, jing liu zeng, john fletcher, ken hudnut, laser pulses, lidar, light detection and ranging, magnitude, mexicali, Mexico, michael oskin, multi fault earthquake, national science foundation, ncalm, off fault deformation, orlando teran, pescadores fault, peter gold, post earthquake topography, pre earthquake, ramon arrowsmith, ridge, rock sample, san andreas, scarp, seismic hazard, seismic wave, united states, university of california

*Geologists learn how earthquakes change the landscape — down to a few inches*

Geologists have a new tool to study how earthquakes change the landscape–down to a few inches. It’s giving scientists insights into how earthquake faults behave.

In this week’s issue of the journal Science, a team of scientists from the United States, Mexico and China reports the most comprehensive before-and-after picture yet of an earthquake zone, using data from the magnitude 7.2 event that struck near Mexicali, Mexico, in April 2010. (more…)

Haiti Quake Risk May Still be High

By Guest PostNovember 1, 2010Environment, Sciencecalifornia, carol prentice, earthquake, enriquillo plantain garden fault, epg fault, fault, geology, haiti, haiti earthquake, january, loma prieta quake, paleoseismology, ruptures, san andreas fault, seismic hazard, strain, U.S. Geological Survey

The fault initially thought to have triggered January’s devastating earthquake in Haiti is likely still under considerable strain and continues to pose a significant seismic hazard, according to a study published online in Nature Geoscience Sunday.

U.S. Geological Survey geologist Carol Prentice led a team of scientists to Haiti immediately after the earthquake to search for traces of ground rupture and to investigate the geology and paleoseismology of the area. (more…)