How long did one of the recent earthquakes, more specifically the quake in Southern California yesterday, last?”
* Earthquakes * Hazards * Learn * Prepare * Monitoring * Research U.S. Geological Survey Earthquake Hazards Program Latest Earthquakes Users of the USGS Earthquake Notification System received a message reporting a magnitude 8.0 earthquake near the Dominican Republic. This was a mistake. In an effort to increase our ability to detect smaller earthquakes in the Caribbean region following the January 12th earthquake in Haiti, the USGS began accepting earthquake locations and magnitudes from additional sources in the region. The message reporting a magnitude 8.0 earthquake near the Dominican Republic was incorrect and resulted in the distribution of the errant e-mail. We acknowledge this was a serious mistake and have issued a correction. * Subscribe: Earthquake Notification Service * ShakeMap: Maps depicting shaking intensity * Did You Feel It? Report an Earthquake * PAGER: Estimate of population exposure USA (Magnitude 1+) April 5, 2010 14:10:36 UTC ANSS World (Magnitude 4.5+) April 5,
An earthquake (also known as a quake, tremor, or temblor) is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. Earthquakes are recorded with a seismometer, also known as a seismograph. The moment magnitude (or the related and mostly obsolete Richter magnitude) of an earthquake is conventionally reported, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale. At the Earth’s surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake epicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity. In its most generic sense, the word earthquake is used to describe any seismic event — whether a natural phenomenon or an event caused by humans
San Diego earthquake, earthquake Baja California, earthquake April 4 2010 & recent earthquakes in Southern California. A very powerful 7.2 magnitude earthquake that struck US Mexico border area created havoc in many parts of California. Los Angeles and San Diego experienced almost a one minute long earthquake. The earthquake of this magnitude and for such a long period has the capability to make major destruction in places where its impact was felt. We should remember that the earthquake in Haiti lasted for half a minute and in Chile too it lasted not more than half a minute.
