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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Filter Total Items: 1,123
September 14, 2012

Living with Fire: Chaparral Removal

Southern California's fire ecology is unlike that of anywhere else in the United States. Fire control strategies developed for mountain forests don't have the same results here. So can science help uncover new answers to help Southern California communities manage and live with wildfires? This 10 minute film showcases ongoing USGS research supporting agencies on the

September 14, 2012

Living with Fire: Human Fire Ignitions

Southern California's fire ecology is unlike that of anywhere else in the United States. Fire control strategies developed for mountain forests don't have the same results here. So can science help uncover new answers to help Southern California communities manage and live with wildfires? This 10 minute film showcases ongoing USGS research supporting agencies on the

Chaos Crags in Lassen Volcanic National Park
September 13, 2012

Chaos Crags in Lassen Volcanic National Park

Chaos Jumbles (foreground) is a rockfall avalanche that formed around 340 years ago when one of the Chaos Crags domes (background) collapsed.

August 30, 2012

PubTalk 8/2012 — Global Food Security in the 21st Century

--the increasing need for food production, cropland areas, and agricultural water

by Prasad Thenkabail, Research Geographer

  • Worldwide demand for food will require more than one billion hectares of new cropland to feed 9 billion plus people by 2050
  • Presently, of all the water used by humans over 70% goes towards
Seafloor map shows the varied intensity of the sonar pulse returned to the ship depending on the substrate it encounters.
August 24, 2012

Acoustic backscatter

Smaller version of Acoustic Backscatter (Sheet 3) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Collage of maps showing various perspective 3-D views of the seafloor that reveal distibguishable features.
August 24, 2012

Data integration and visualization

Smaller version of Data Integration and Visualization (Sheet 4) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Seafloor character map reveals the different sediment types on the seafloor.
August 24, 2012

Seafloor character

Smaller version of Seafloor Character (Sheet 5) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Collage of maps and photographs of the seafloor show how scientists correlate the sediment variations with potential habitats.
August 24, 2012

Ground-truth studies

Smaller version of Ground-Truth Studies (Sheet 6) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Seafloor maps show geology and structure of the earth's crust.
August 24, 2012

Local and regional shallow-subsurface geology and structure

Smaller version of Local and Regional Shallow-Subsurface Geology and Structure (Sheet 9) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Seafloor and coastal area maps show geology and geomorphology.
August 24, 2012

Offshore and onshore geology and geomorphology

Smaller version of Offshore and Onshore Geology and Geomorphology (Sheet 10) from USGS Scientific Investigations Map 3225, California State Waters Map Series—Hueneme Canyon and Vicinity, California, as an example of the different kinds of maps (“sheets”) produced within a coastal map “block”.

Chaos Crags in Lassen Volcanic National Park
August 4, 2012

View of Chaos Crags in Lassen Volcanic National Park from Lassen Peak.

Chaos Crags is a series of lava domes that erupted about 1,100 years ago from the Lassen Volcanic Center.

July 26, 2012

PubTalk 7/2012 — Wind Energy and Wildlife

-- the challenges of wind-energy development and wildlife conservation

by Manuela Huso, Research Statistician

 

  • Wind-power development in the United States is increasing exponentially, with proposals to provide 20% of the country's total power by 2030.
  • High numbers of bird and bat carcasses at some wind farms
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USGS science for a changing world logo
April 27, 2005

The Mw 6.0 Parkfield earthquake that occurred last September 28 was one of the most significant earthquakes in the history of seismology ­ not because of its size or the damage it inflicted ­ but because the earthquake occurred just where scientists had hoped: in the most densely instrumented location in the world.

USGS
April 27, 2005

The Mw 6.0 Parkfield earthquake that occurred last September 28 was one of the most significant earthquakes in the history of seismology ­ not because of its size or the damage it inflicted ­ but because the earthquake occurred just where scientists had hoped: in the most densely instrumented location in the world.

USGS
April 26, 2005

Trees in the world’s most productive forests -- forests that add the most new growth each year -- also tend to die young, according to a U.S. Geological Survey (USGS) study published in a recent issue of the journal Ecology Letters. This discovery could help scientists predict how forests will respond to ongoing and future environmental changes.

USGS science for a changing world logo
April 14, 2005

The catastrophic damage resulting from the 1906 earthquake proved to be the springboard for a century of advances in the understanding and science of earthquakes. 

USGS
April 14, 2005

Old Maps, even Old Cemeteries, Provide New Clues for Modern Intensity Tool

USGS science for a changing world logo
April 8, 2005

Another Great Earthquake in the Indian Ocean, but What About the Tsunami?

Steam Explosions, Earthquakes, and Volcanic Eruptions--What’s in Yellowstone’s Future?

Radio-Monitored Salmon Shed Light on Snake River for Water Managers

Itching to Know More About America’s Modern Gold Rush?

Hazards and Cooperation Spawn New Uses for Geospatial Information

 

USGS science for a changing world logo
March 15, 2005

G. Brent Dalrymple has been awarded the National Medal of Science, the nation’s highest honor for scientific achievement. President Bush presented the medal during a White House ceremony on Mar. 14.

USGS
March 15, 2005

G. Brent Dalrymple has been awarded the National Medal of Science, the nation’s highest honor for scientific achievement. President Bush presented the medal during a White House ceremony on Mar. 14.

USGS science for a changing world logo
February 22, 2005

The U.S. Geological Survey today advised state and federal agencies about the threat of landslides and debris flows in eight counties of southern California due to recent rains, melting snow, and continuing rain forecast by the National Weather Service.

USGS
February 22, 2005

The U.S. Geological Survey today advised state and federal agencies about the threat of landslides and debris flows in eight counties of southern California due to recent rains, melting snow, and continuing rain forecast by the National Weather Service.

USGS science for a changing world logo
February 18, 2005

The USGS just released a report on the landslide hazards at La Conchita, the California coastal community in Ventura County that was struck by a landslide on Jan. 10 that killed 10 people and destroyed or damaged 36 houses.

USGS
February 18, 2005

The USGS just released a report on the landslide hazards at La Conchita, the California coastal community in Ventura County that was struck by a landslide on Jan. 10 that killed 10 people and destroyed or damaged 36 houses.