Unified Interior Regions

California

The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

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October 14, 2008

Groundshaking animation: Hayward Fault, Oakland epicenter

Scenario shows the ground shaking for a magnitude 7.0 earthquake on the Hayward fault with the epicenter in Oakland, California. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views.  

Attribution: Natural Hazards
October 14, 2008

Groundshaking animation: Hayward Fault, San Pablo Bay epicenter

Animation showing the intensity of groundshaking across the San Francisco Bay region during a hypothetical M 7.0 earthquake on the Hayward Fault with the epicenter in San Pablo Bay. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views.  

Attribution: Natural Hazards
October 14, 2008

Groundshaking animation: Hayward Fault, Fremont epicenter

Animation showing the intensity of groundshaking across the San Francisco Bay region during a hypothetical M 7.0 earthquake on the Hayward Fault with the epicenter in Fremont. Visit M7.0 Earthquake Scenarios - Hayward Fault for detailed perspective views.  

Attribution: Natural Hazards
September 25, 2008

PubTalk 9/2008 — Ready for the Next Big Bay Area Earthquake?

The 1989 Loma Prieta Earthquake was not the Bay Area's "Big One" but a repeat of the destructive 1868 Hayward earthquake may qualify!

by Tom Brocher, USGS Seismologist

 

  • The next large Hayward Fault earthquake will effect the entire San Francisco Bay Area - Are You Prepared?
  • The Hayward Fault is the most
A sea star with lots of legs on a sandy bottom of the sea.
August 31, 2008

Sunflower sea star on the seafloor

Photograph of the seafloor off the California coast showing coarse sand, shells, and a sunflower sea star. It was taken during a "ground-truthing" survey off of Salt Point, California, in support of the California Seafloor Mapping Program.

August 28, 2008

PubTalk 8/2008 — How the Earth Copes with Our LUSTs

The amazing capabilities of subsurface life

by Barbara Bekins, USGS Research Hydrologist

 

LUST= Leaking Underground Storge Tank

  • By some estimates, the total carbon in subsurface bacteria is nearly as large as the carbon in all surface plants
  • Underground microorganisms are capable of biodegrading an array
Image: California Coast Seafloor
August 18, 2008

California Coast Seafloor

This photograph is of the seafloor off the California coast and shows coarse sand, shells and a sunflower sea star. This photograph supports the California Seafloor Mapping Program (CSMP), which was initiated in 2007 by the California Ocean Protection Council. Data collected during this project reveal the seafloor offshore of the California coast in unprecedented

...
Image: Sea Otter in Monterey Bay, California
August 9, 2008

Sea Otter in Monterey Bay, California

A sea otter swims in Monterey Bay, California. USGS scientists study sea otters in efforts to help the threatened species continue to recover from near extinction.

Image: Sea Otter Swims in Monterey Bay, California
August 9, 2008

Sea Otter Swims in Monterey Bay, California

A sea otter swims in Monterey Bay, California. USGS scientists study sea otters in efforts to help the threatened species continue to recover from near extinction.

Image: Sea Otter Swims in Monterey Bay, California
August 9, 2008

Sea Otter Swims in Monterey Bay, California

A sea otter swims in Monterey Bay, California. USGS scientists study sea otters in efforts to help the threatened species continue to recover from near extinction.

Image: Sea Otter in Monterey Bay, California
August 9, 2008

Sea Otter in Monterey Bay, California

A sea otter swims in Monterey Bay, California. USGS scientists study sea otters in efforts to help the threatened species continue to recover from near extinction.

Image: Sea Otter Swims in Monterey Bay, California
August 9, 2008

Sea Otter Swims in Monterey Bay, California

A sea otter swims in Monterey Bay, California. USGS scientists study sea otters in efforts to help the threatened species continue to recover from near extinction.

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USGS
November 27, 2001

Understanding the natural role of fire in chaparral ecosystems is necessary to effectively manage fires in southern California’s shrublands, where large, high-intensity fires sweep the landscape each year, threatening lives and homes.

USGS science for a changing world logo
November 7, 2001

Think of southern California, and images of beach, sun and surf come to mind, coupled with boundless recreation opportunities for beach-goers. What’s missing from these images? It could be the shorebirds that cavort at the edge of the sea and sand.

USGS
November 7, 2001

Think of southern California, and images of beach, sun and surf come to mind, coupled with boundless recreation opportunities for beach-goers. What’s missing from these images? It could be the shorebirds that cavort at the edge of the sea and sand.

USGS science for a changing world logo
October 29, 2001

In observance of National Geography Awareness Week, November 11-17, the U.S. Geological Survey in Menlo Park will host a GIS (Geographic Information System) Day event for students of local elementary and high schools.

USGS
October 29, 2001

In observance of National Geography Awareness Week, November 11-17, the U.S. Geological Survey in Menlo Park will host a GIS (Geographic Information System) Day event for students of local elementary and high schools.

USGS
October 24, 2001

There are two weeks left for creative mappers of all ages to enter a poster in the annual poster/map contest, sponsored by the U.S. Geological Survey and the Bay Area Automated Mapping Association (BAMA).

USGS science for a changing world logo
October 8, 2001

WHAT: USGS wildfire research presentations at California’s 2001 Wildfire Conference and Public Events: Ten Years After the East Bay Hills Fire.
WHEN: Thurs., Oct. 11 
WHERE: Scottish Rite Center, 1547 Lakeside Drive, Oakland, Calif. 
WHO: Scientists of the USGS Western Ecological Research Center:

USGS
October 8, 2001

USGS wildfire research presentations at California’s 2001 Wildfire Conference and Public Events: Ten Years After the East Bay Hills Fire.

USGS
October 3, 2001

Saltcedar, an invasive shrub from Eurasia, has the notoriety of siphoning off millions of acre-feet of water from desert aquifers. Its amazing rate of spread, an estimated seven feet per hour, averaged over time, up the Little Colorado River - is difficult to imagine outside of sci-fi flicks.

USGS science for a changing world logo
October 2, 2001

Scientists from the U.S. Geological Survey’s Earthquake Hazards Team will be on site at an open trench on the Hayward Fault, Tuesday, October 2, to explain to city and county officials and transportation managers, the importance of trenching operations to earthquake research, and the latest results of trenching the Hayward Fault. WHEN: October 2, 10 a.m. to 1 p.m.

USGS
October 2, 2001

Scientists from the U.S. Geological Survey’s Earthquake Hazards Team will be on site at an open trench on the Hayward Fault, Tuesday, October 2, to explain to city and county officials and transportation managers, the importance of trenching operations to earthquake research, and the latest results of trenching the Hayward Fault. 

USGS science for a changing world logo
September 7, 2001

New technologies in the form of Interferometric Synthetic Aperture Radar (InSAR) and the Global Positioning System (GPS) have helped scientists determine that fluid-like flow occurred just below the earth’s crust in the first few months following two recent large California earthquakes.