shows a map of the aftershocks of the May 12 main shock. If you compare Figure 4 and the aftershock map, you can see that the aftershocks of the May 12 earthquake are located very close to the part of the fault that slipped in the main shock. This is the usual behavior of most eart...
Researchers said they also found the possibility of more damaging earthquakes along the central and northeastern Atlantic Coastal corridor, including in Washington, D.C., Philadelphia, New York and Boston. Implications of the map USGS geophysicist Mark Petersen considers the new model "a touchstone ac...
Structures data collection for The National Map using volunteered geographic information Student volunteers reviewed each point, and an in-house review of each point by the USGS followed. Nine-hundred and thirty-eight structure points were initially downloaded from the USGS database. Editing and qualit...
It lies above several active plates (板块)with many fire-breathing volcanoes around. The eruption of a volcano and the shaking of an earthquake this week isjust one reminder of Indonesia's burning base. Indonesia consisting of 17 500 islands sits between the world's most active region the ...