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Exploring: Earthquakes
Earthquakes
The latest and historical earthquakes, hazards information, educational resources, maps, seismographic stations and real-time recording, current research in plain language, data, software and derived products.
Earthquakes
Earthquakes Latest Earthquakes Latest earthquakes map and list. Tap/click on "gear icon" for options and settings. Earthquake Lists, Maps and Statistics Largest earthquakes, significant events, lists and maps by magnitude, by year, or by location. Search Earthquake Catalog View historic seismicity, find past earthquakes that meet your criteria....
Earthquakes
Earthquakes The Bay Area may is a seismically active region. On average, there are 20 or more earthquakes every day in the greater Bay Area. Hundreds of sensitive seismic instruments record these earthquakes, many of which are too small or too deep to be felt. Understanding the frequency and location of past earthquakes—both large and small—is...
Latest Earthquakes
Latest Earthquakes Javascript must be enabled to view our earthquake maps. To access USGS earthquake information without using javascript, use our Magnitude 2.5+ Earthquakes, Past Day ATOM Feed or our other earthquake feeds .
Repeating Earthquakes
Repeating Earthquakes Figure 1. East-west and north-south components of ground motion for the 1922 and 1934 Parkfield events recorded at Berkeley, California. Do earthquakes occur completely randomly, or do they have a pattern that tends to repeat? If they're random, there's no hope for earthquake prediction. But as we saw in the earthquake...
Repeating Earthquakes
Repeating Earthquakes The modern era of scientific earthquake prediction began, perhaps, in the mid- to late 1970's. In the winter of 1975, Chinese officials had ordered the evacuation of the city of Haicheng (population about 1 million) in the Liaoning Province of northeast China, based on reports from scientists and lay observers in a wide...
Induced Earthquakes
Induced Earthquakes Bryant Platt digs a hole to install seismometers at a home in southern Kansas. Seismometers are in the foreground. Observational Studies In response to sudden changes in seismicity that are potentially induced by human activity, the USGS may deploy temporary seismic stations to better understand the earthquakes. These...
Induced Earthquakes
Induced Earthquakes The June issue of The Leading Edge features a special section on Injection-induced seismicity. Four USGS studies were included as part of this issue: Efforts to monitor and characterize the recent increasing seismicity in central Oklahoma McNamara et al. Increasing seismicity in the U. S. midcontinent: Implications for...
Earthquakes | USGS.gov
Earthquakes | USGS.gov Skip to main content Facebook Twitter Google+ LinkedIn Delicious Digg Reddit StumbleUpon Pinterest Search Search Science Application for Risk Reduction + Science + Science Explorer Mission Areas Regions Frequently Asked Questions Education Products + Data and Tools Maps Publications Software Multimedia Gallery Park Passes...
Scenario Earthquakes
Scenario Earthquakes Javascript must be enabled to view our earthquake maps. To access USGS earthquake information without using javascript, use our Magnitude 2.5+ Earthquakes, Past Day ATOM Feed or our other earthquake feeds .
Induced Earthquakes
Induced Earthquakes Cartoon of the effects of fluid injection and withdrawal can have on nearby faults. Numerical Modeling The USGS uses computer simulations to evaluate the physical relationships between fluid injection (or extraction) and earthquakes. We can only indirectly study these relationships using observations, so computer simulations...
Induced Earthquakes
Induced Earthquakes Cumulative number of M ≥ 2.7 earthquakes in the central and eastern United States (CEUS) and five select zones of induced seismicity since 1980. Hazard Estimation The USGS National Seismic Hazard Model (NSHM) forecasts earthquake hazard, or the potential strength and frequency of ground shaking from future earthquakes, in the...
Earthquakes Hazards
Earthquakes Hazards Skip to main content Facebook Twitter Google+ LinkedIn Delicious Digg Reddit StumbleUpon Pinterest Search Search Science + Science Explorer Mission Areas Regions Frequently Asked Questions Education Products + Data and Tools Maps Publications Software Multimedia Gallery Park Passes USGS Library News + Featured Stories News...
HVO Earthquakes
HVO Earthquakes USGS Home | Contact USGS | Search USGS About HVO Volcanoes Earthquakes Hazards Monitoring Learn Multimedia FAQs × Close
Parkfield Earthquakes
Parkfield Earthquakes 3-D Display of Earthquakes at Parkfield The red lines represent the trace of the San Andreas fault (at the surface). Most earthquakes are shown as white points. Earthquakes with fault plane solutions are represented by blue rectangle, oriented in a selected fault plane The image may be rotated, zoomed, and set spinning with...
Induced Earthquakes
Induced Earthquakes USGS Publications 2016 Choy, G. L., Rubinstein, J. L., Yeck, W. L., McNamara, D. E., Mueller, C. S., Boyd, O. S. ( 2016 ) A Rare Moderate-Sized (Mw 4.9) Earthquake in Kansas: Rupture Process of the Milan, Kansas, Earthquake of 12 November 2014 and Its Relationship to Fluid Injection, Seismol. Res. Letters, v. 87, p. 1-9, DOI:...
Induced Earthquakes
Induced Earthquakes Myths and Misconceptions What you do and don’t know about induced seismicity Fact 1: Fracking is NOT causing most of the induced earthquakes. Wastewater disposal is the primary cause of the recent increase in earthquakes in the central United States. Wastewater disposal wells typically operate for longer durations and inject...
Induced Earthquakes
Induced Earthquakes Within the central and eastern United States, the number of earthquakes has increased dramatically over the past few years. Are they natural, or man-made? And what should be done in the future? Overview Between the years 1973–2008, there was an average of 21 earthquakes of magnitude three and larger in the central and eastern...
Induced Earthquakes
Induced Earthquakes Oilfield waste arrives by tanker truck at a wastewater disposal facility near Platteville, Colo. After removal of solids and oil, the wastewater is injected into a deep well for permanent storage underground. Photo by Bill Ellsworth, USGS. Overview Within the central and eastern United States, the number of earthquakes has...
Earthquakes for Kids
Earthquakes for Kids Science of Earthquakes A student doing an experiment in the rock physics lab. Earthquake Animations A trench dug across a fault to learn about past earthquakes. Science Fair Projects A GPS instrument measures slow movements of the ground. Become an Earthquake Scientist Cool Earthquake Facts Today in Earthquake History A...
Errata for Latest Earthquakes
Errata for Latest Earthquakes Beginning in 2010, we have posted information here regarding errors in the Real-time Earthquake system that led to erroneous information getting posted on the website or distributed. The USGS and networks contributing to the Advance National Seismic System (ANSS) take great effort to provide accurate and timely...