Science Explorer

Exploring: Epicenter

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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.

Year Published: 2018

The intensity signature of induced seismicity

https://pubs.er.usgs.gov/publication/70197866

We analyze a comprehensive database of ∼63,000">∼63,000 geocoded community intensity observations from >400">>400 earthquakes of moment magnitude M≥3.5">M≥3.5 in Oklahoma from 2010 to 2016 to define the intensity signature of induced events. We show that natural and induced...

Attribution: Geologic Hazards Science Center, Natural Hazards, Earthquake Hazards, United States of America

Seafloor Faults off Southern California

https://www.usgs.gov/centers/pcmsc/science/seafloor-faults-southern-california

More than 22 million people live along Southern California’s coast, and many more migrate there every year. Faults and earthquake threats in this region have been heavily studied on land. USGS aims to boost our knowledge about faults on the seafloor, so they can be included in hazard assessments.

Pacific Coastal and Marine Science Center

Landslides Glossary

https://www.usgs.gov/natural-hazards/landslide-hazards/science/landslides-glossary

Definitions of landslide science terms.

Natural Hazards, Landslide Hazards, Geologic Hazards Science Center

Evolution of a Realime Landslide Map

https://www.usgs.gov/media/images/evolution-a-realime-landslide-map

(a–d) Evolution of landslide map with (e–h) four major updates to the USGS ShakeMap, in which the ShakeMap version and release time relative to the earthquake time are labeled below each map; the star indicates the epicenter; triangles and circles show seismic and “Did You Feel It?” data; and polygons show fault segments...

Natural Hazards, Landslide Hazards

Kīlauea Volcano Erupts

Date Published: 2018-06-21

https://www.usgs.gov/news/k-lauea-volcano-erupts

Today's update for June 21st, 2018 will be the last of the daily updates on this USGS feature story. We encourage you to keep checking the USGS Hawaiian Volcano Observatory (HVO) Kīlauea status website for daily activity updates. You can also visit the USGS Facebook page and the USGS Twitter feed as updates become available. For press inquiries,...

Natural Hazards, Volcano Hazards

Meredith Nevers

https://www.usgs.gov/staff-profiles/meredith-nevers

Meredith B. Nevers is a research ecologist with the U.S. Geological Survey, Great Lakes Science Center in Porter, Indiana. She received her B.A. in biology/English from Wittenberg University and her M.S. in marine biology from the University of North Carolina at Wilmington. She has worked with the USGS for the past 17 years....

Great Lakes Science Center

Muruleedhara Byappanahalli

https://www.usgs.gov/staff-profiles/muruleedhara-byappanahalli

Murulee Byappanahalli, Ph. D. is a Research Microbiologist with the U.S. Geological Survey Great Lakes Science Center. He received his MS and Ph. D. degrees in Microbiology from theUniversity of Hawaii at Manoa. His research interests include microbial ecology, soil microbiology,...

Great Lakes Science Center

Jess Rodysill collecting GPR data

https://www.usgs.gov/media/images/jess-rodysill-collecting-gpr-data

Jess Rodysill from the Eastern Geology and Paleoclimate Science Center is collecting ground-penetrating radar (GPR) data from three man-made reservoirs near the epicenter of the 2011 Mineral, Virginia earthquake with colleague Mark Carter. In the photo, Jess Rodysill is connecting power and data cables on the GPR system to set up the equipment for...

Northeast, Eastern Geology and Paleoclimate Science Center

Map showing January 23, 2018 earthquake epicenter.

https://www.usgs.gov/media/images/map-showing-january-23-2018-earthquake-epicenter

A magnitude 7.9 earthquake (yellow star) off southern Alaska on January 23 prompted tsunami alerts for Alaska, Canada, and the U.S. west coast. White circles show epicenters of past earthquakes, 1900-2015, the larger the circle size, the greater magnitude. Modified from USGS interactive map.

Natural Hazards, Coastal and Marine Geology, Pacific Coastal and Marine Science Center

Epicenter of 2017-09-08 Earthquake Offshore Mexico

https://www.usgs.gov/media/images/epicenter-2017-09-08-earthquake-offshore-mexico

USGS map of the September 8, 2017earthquake in Mexico.

Natural Hazards, Earthquake Hazards, Earthquake Science Center

Graph: Peak ground-motion variability for a magnitude 7.7 earthquake

https://www.usgs.gov/media/images/graph-peak-ground-motion-variability-magnitude-77-earthquake

Peak ground-motion variability for a magnitude 7.7 earthquake. Warmer colors indicate stronger ground motions. The stronger ground motions are extended further northeast and southwest caused by the channeling effect of the Reelfoot rift (RFR) The fault is displayed as a thick black continuous straight line, with the epicenter indicated by the...

Earthquake Hazards

Mw6.6 Lushan China Earthquake, April 20 2013

https://www.usgs.gov/media/images/mw66-lushan-china-earthquake-april-20-2013-11

Blue tents in Longmen near epicenter.

Boulder from 2008 Great Sichuan Earthquake in China

https://www.usgs.gov/media/images/boulder-2008-great-sichuan-earthquake-china

The May 12, 2008, Great Sichuan Earthquake, also called the Wenchuan Earthquake, occurred at 14:28 local time, in Sichuan Province, China. The earthquake magnitudes were Mw = 7.9 (USGS), Ms = 8.0 (Chinese Earthquake Administration). The epicenter was 80 km west-northwest of Chengdu, the capital city of Sichuan province. Damage by earthquake-...

Natural Hazards

2008 Landslide Near Hongyan Resort, China

https://www.usgs.gov/media/images/2008-landslide-near-hongyan-resort-china

Natural Hazards

Road Damage from 2008 Great Sichuan Earthquake in China

https://www.usgs.gov/media/images/road-damage-2008-great-sichuan-earthquake-china

Natural Hazards

Statement of Stephen Hickman, Director of the Earthquake Science Center, U.S. Geological Survey

https://www.usgs.gov/congressional-statement/statement-stephen-hickman-director-earthquake-science-center-us-geological

before the House Committee on Science, Space, and Technology

Natural Hazards, Earthquake Hazards, Earthquake Science Center

East vs West Coast Earthquakes

Date Published: 2018-04-24

https://www.usgs.gov/news/east-vs-west-coast-earthquakes

Why was an earthquake in Virginia felt at more than twice the distance than a similar-sized earthquake in California? The answer is one that many people may not realize. Earthquakes east of the Rocky Mountains can cause noticeable ground shaking at much farther distances than comparably-sized earthquakes in the West.

Natural Hazards, Earthquake Hazards

USGS Rolls Out Groundbreaking Earthquake Study: The HayWired Earthquake Scenario

Date Published: 2018-04-18

https://www.usgs.gov/news/usgs-rolls-out-groundbreaking-earthquake-study-haywired-earthquake-scenario

USGS collaborates with key academic, state, local, and industry partners to provide a new look at what could happen during a major earthquake in the San Francisco Bay Area.

Natural Hazards, Earthquake Hazards

Hawaiian Volcano Observatory

https://volcanoes.usgs.gov/observatories/hvo/felt_earthquakes.html

Hawaiian Volcano Observatory USGS HOME Contact USGS Volcano Hazards Program Find a U.S. Volcano Adagdak Akutan Amak Amukta Aniakchak Augustine Behm Canal-Rudyerd Bay Black Peak Bobrof Bogoslof Buldir Buzzard Creek Carlisle Chagulak Chiginagak Churchill Cleveland Dana Davidof Denison Douglas Duncan Canal Dutton Edgecumbe Emmons Lake Fisher...

Yellowstone Volcano Observatory News Archive

https://volcanoes.usgs.gov/observatories/yvo/yvo_news_archive.html

Yellowstone Volcano Observatory News Archive USGS HOME Contact USGS Volcano Hazards Program Find a U.S. Volcano Adagdak Akutan Amak Amukta Aniakchak Augustine Behm Canal-Rudyerd Bay Black Peak Bobrof Bogoslof Buldir Buzzard Creek Carlisle Chagulak Chiginagak Churchill Cleveland Dana Davidof Denison Douglas Duncan Canal Dutton Edgecumbe Emmons Lake...

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