Earthquake Hazards

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graph and map
February 13, 2019

Increasing Rate of Earthquakes Beginning in 2009

Annual number of earthquakes with a magnitude of 3.0 or larger in the central and eastern United States, 1970–2016. The long-term rate of approximately 25 earthquakes per year increased sharply starting around 2009.

Attribution: Earthquake Hazards
A USGS technician services a ShakeAlert sensor station in the San Francisco Bay area
December 31, 2018

ShakeAlert sensor station being serviced by USGS personnel

A USGS electronics technician performs maintenance on a ShakeAlert Earthquake Early Warning (EEW) sensor station, located in the San Francisco Bay Area. ShakeAlert station components include strong-motion accelerometers, solar panel and battery power systems, and communications & telemetry equipment for communication with the wider ShakeAlert network. 

city skyline at night with tall buildings and bridge in left foreground lit up
December 31, 2018

The Bay Bridge and the Oakland city skyline

The nighttime Oakland city skyline as seen from San Francisco with the Bay Bridge in the foreground

November 30, 2018

Shaking of Atwood Building, Mw 7.0 November 30, 2018, Anchorage quake

This video presents a visualization of how the Atwood Building in Anchorage, Alaska, shook during the Mw 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by the U.S. Geological Survey to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about improving the performance of the

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November 30, 2018

Shaking of Frontier Building, M7.0 November 30, 2018, Anchorage Quake

This video presents a visualization of how the Frontier Building in Anchorage, Alaska, shook during the moment magnitude (Mw) 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by U.S. Geological Survey to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about improving the

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November 30, 2018

Shaking of BP Exploration Building, M7 Nov. 30, 2018, Anchorage Quake

This video presents a visualization of how the BP Exploration Building in Anchorage, Alaska, shook during the moment magnitude (Mw) 7.0 November 30, 2018, Anchorage, Alaska, earthquake. The building was instrumented by U.S. Geological Survey (USGS) to obtain data to study its behavior and performance during strong shaking. Such data are useful in making decisions about

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Two oceanographers look at a coral core stored in a wooden box
October 18, 2018

Coral cores like this one reveal geologic history of Keys reefs

USGS Research Oceanographer Lauren Toth and Oceanographer Anastasios Stathakopoulos study a coral-reef core in the USGS’s Core Archive in St. Petersburg, Florida. Photo: Dominique Gallery, USGS.

September 27, 2018

PubTalk 9/2018 - Hayward Earthquake

Title: The 150th Anniversary of the Damaging 1868 Hayward Earthquake: Why It Matters and How We Can Prepare for Its Repeat

  • The Hayward Fault in the heart of the Bay Area is one of the most urbanized faults in the US.
  • Studies of the fault reveal that it has produced 12 large earthquakes in the past 2000 years spaced 100-220 years apart.
  • There
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September 21, 2018

Northwest ShakeAlert Sensor Station

Maintenance of a high-quality ShakeAlert sensors, power and telemetry stations.

September 11, 2018

B-Roll California ShakeAlert Sensor

Maintenance of high quality ShakeAlert sensor, power and telemetry station.
 

A coral worn smooth with a badly eroded base
August 28, 2018

Erosion has taken a toll on this Keys coral

A reef in the Florida Keys National Marine Sanctuary with little living coral and extensive bioerosion. Photo taken under research permit number FKNMS-2016-085-A1. Credit: USGS, Ilsa Kuffner.

city skyline with tall buildings lit up at night and bridge in left foreground
August 15, 2018

The Bay Bridge and the Oakland city skyline

The nighttime Oakland city skyline as seen from San Francisco with the Bay Bridge in the foreground