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3 days ago · ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes. These maps are used by federal, state, and local organizations, both public and private, for post-earthquake response and ...
- Atlas
The Atlas of ShakeMaps (~14,100 earthquake, 1900-2019)...
- Latest Earthquakes
contributor ci maxlatitude 37.101 maxlongitude-111.951...
- Alaska
contributor ak maxlatitude 70.891 maxlongitude-138.428...
- Shakemap, a Tool for Earthquake Response
Publication type: Report: Publication Subtype: USGS Numbered...
- Atlas
1 day ago · Seismologists Charles Richter and Beno Gutenberg developed the Richter Scale in 1935 in order to create a standard scale to measure seismic activity. Richter and Gutenberg largely based the model on the Mercalli Intensity Scale, a previous earthquake model that was less accurate and based on the observed effects of an earthquake.
4 days ago · PHIVOLCS Earthquake Intensity Scale (PEIS) Perceptible to people under favorable circumstances. Delicately balanced objects are disturbed slightly. Still Water in containers oscillates slowly. Felt by few individuals at rest indoors. Hanging objects swing slightly. Still Water in containers oscillates noticeably. Felt by many people indoors ...
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1 day ago · An earthquake is a weak to violent shaking of the ground produced by the sudden movement of rock materials below the earth’s surface. The earthquakes originate in tectonic plate boundary. The focus is point inside the earth where the earthquake started, sometimes called the hypocenter, and the point on the surface of the earth directly above ...
1 day ago · earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earth ’s rocks. Seismic waves are produced when some form of energy stored in Earth’s crust is suddenly released, usually when masses of rock straining against one another suddenly fracture and “slip.”. Earthquakes occur most often along geologic ...
- Why is an earthquake dangerous?Over the centuries, earthquakes have been responsible for millions of deaths and an incalculable amount of damage to property. Depending on their i...
- What are earthquake waves?Earthquake waves, more commonly known as seismic waves, are vibrations generated by an earthquake and propagated within Earth or along its surface....
- How is earthquake magnitude measured?Magnitude is a measure of the amplitude (height) of the seismic waves an earthquake’s source produces as recorded by seismographs. Seismologist Cha...
- Where do earthquakes occur?Earthquakes can occur anywhere, but they occur mainly along fault lines (planar or curved fractures in the rocks of Earth’s crust), where compressi...
1 day ago · An earthquake measuring magnitude 6.6 hit western Japan on Wednesday night. ... Agency officials say the tremor measured an intensity of lower 6 on the Japanese seismic scale of zero to 7 in parts ...
1 day ago · A 2.7 magnitude earthquake struck off the coast of Rancho Palos Verdes Wednesday morning. The tremblor happened at 8:56 a.m., eight miles from Rancho Palos Verdes in the Pacific Ocean. According ...
