Unified Interior Regions

California

States L2 Landing Page Tabs

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Model of reservoirs underneath Long Valley Caldera...
August 8, 2016

Model of reservoirs underneath Long Valley Caldera

Main hydrothermal features of the new (2016) 3-D model of the subsurface at Long Valley Caldera. This schematic is based on a survey of the electrical properties of the earth (magnetotellurics) below. Arrows show subsurface water flow, with colors keyed to changing water temperature, from blue (cold) to red (hot). Purple arrows show an extinct hot water pathway. See 2016

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July 28, 2016

July Public Lecture — USGS CalVO: It's not just earthquake country!

Volcanic eruptions occur int he State about as frequently as the large San Andreas Fault Zone earthquakes. California's "watch list" volcanoes are dispersed throughout the State and future eruptions are inevitable—the likelihood of renewed volcanism is on the order of one in a few hundred to one in a few thousand annually.

With Margaret Mangan, Scientist-in-Charge,

July 27, 2016

Ivanpah Video Clip

The video shows smaller smoking objects (insects). Dark objects (birds) are flying above the tower. We are uncertain of the origin of dark trails following the birds. 
 

July 27, 2016

Ivanpah Video Clip

The video shows small smoking objects (insects) and a larger object (bird) as it begins to smoke when entering the solar flux. The turquoise window is the thermal camera view of this same event.

Satellite image showing logging effects
June 25, 2016

Landsat Monitors 1,800-Year-Old Redwoods

These Landsat images show logging’s influence around the dark green protected forests. Many of the small pink spots in the lower left corner and across the right side of the 1984 scene are logging sites revealed through Landsat 5’s Thematic Mapper sensor. In the 2016 Landsat 8 image, logging seems to have lessened overall, particularly as areas on the right side of the

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June 15, 2016

Running Rivers

What inspired a USGS geologist to study how dam removal changes rivers. Profile of Amy East.

Seafloor map with many different colors and shading to give a 3D effect and to display data with a color scheme.
June 10, 2016

Potential Marine Benthic Habitats of Monterey Canyon and Vicinity

The map on sheet 7 shows “potential” marine benthic habitats in the Monterey Canyon and Vicinity map area, representing a substrate type, geomorphology, seafloor process, or any other attribute that may provide a habitat for a specific species or assemblage of organisms. This map, which is based largely on seafloor geology, also integrates information displayed on several

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Glacier National Park
June 5, 2016

Glacier Bay National Park

View of Glacier Bay National Park from the air.

Fairweather Fault
June 5, 2016

Fairweather Fault

USGS research geologist Kate Scharer with her finger on the Fairweather Fault in southeast Alaska. The magnitude 7.8 Lituya Bay earthquake caused shaking that toppled trees along the fault, which left a break in the forest shown here.

South Crillon Glacier
June 5, 2016

South Crillon Glacier

Nearly 60 years after a magnitude 7.7 earthquake struck Lituya Bay, Alaska — leading to a tsunami that devastated the area — six U.S. Geological Survey geologists revisited the isolated region of Alaska, to pick up where their scientific predecessors left off. In this photo, members of the USGS research team pause to take in the view of South Crillon Glacier from a study

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South Crillon Glacier
June 5, 2016

South Crillon Glacier

Periodic calving of ice from the snout of South Crillon Glacier.

Glacier Bay National Park
June 5, 2016

Glacier Bay National Park

Trench site along the southern Fairweather Fault, in Glacier Bay National Park, Alaska. The alluvial fan at left consists of lake, stream channel and debris flow deposits impounded by the Fairweather Fault scarp, at right.

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USGS science for a changing world logo
September 23, 2011

Scientists were unable to complete this year’s survey of the California sea otter (also known as the southern sea otter) population due to heavy fog, poor visibility, and strong winds throughout the spring and summer. 

USGS science for a changing world logo
September 20, 2011

Groundwater is among United States' most important natural resources. This hidden resource provides half of our drinking water, enables sustained economic growth to agriculture other industries, and contributes to the health of ecosystems throughout the country. 

USGS science for a changing world logo
August 23, 2011

Scientists around the world are exploring many different methods, including repeat photography, to better understand today's changing environmental conditions. Thursday's lecture,"Through the Lens of Time," explains the techniques in repeat, or “time-lapse,” photography being used to monitor landscapes by tracking and studying changing climates and environmental conditions.

USGS science for a changing world logo
August 22, 2011

A report cooperatively produced and published by the U.S. Geological Survey and the California Geological Survey contains a map and associated datasets that inventory 290 locations of reported natural asbestos occurrences in California.

Image: Coso Volcanic Field Tumulus
August 16, 2011

A new design for the USGS Volcano Science Center (VSC) web pages is now open for internal viewing. This site has not been fully developed yet, and there are still many holes to fill. The launch is meant to give VSC staff a preview into the new database-driven website design.

USGS science for a changing world logo
August 15, 2011

On Aug. 16, the USGS will debut a new film, “Lake of the Sky: USGS Tahoe Basin Science,” on scientific research in the Lake Tahoe Basin at the 15th Annual Lake Tahoe Summit "Stewardship and Sustainability in Challenging Fiscal Times" sponsored by Senator Diane Feinstein, at Homewood Mountain Ski Resort in California. 

USGS science for a changing world logo
August 15, 2011

A new and comprehensive geologic map of Lassen Volcanic National Park allows land managers, first responders and engineers to better assess volcanic hazards in the park and its vicinity, and provides a framework for all future earth science research in the area.

USGS science for a changing world logo
August 12, 2011

The public is invited to the Loomis Museum in Lassen Volcanic National Park on Wednesday, August 17 from 10:30 a.m. to 11:30 a.m. for the unveiling of a spectacular new map and booklet that interprets the detailed geology of the park. The U.S. Geological Survey and the Park are pleased to announce a special public presentation by USGS scientists to unveil their new landmark publication, the "

Screenshot Location of Lassen Volcanic Center
August 12, 2011

The U.S. Geological Survey and Lassen Volcanic National Park are pleased to announce a special public presentation by USGS scientists to unveil, the "Geologic Map of Lassen Volcanic National Park and Vicinity," a map and booklet that interprets the detailed geology of the park.

USGS science for a changing world logo
August 11, 2011

Science papers, posters, and other types of information used to inform and update Klamath Basin public and private sector stakeholders at the 2010 Klamath Basic Science Conference have been published by the USGS in an Open File Report that is now available online.

USGS science for a changing world logo
August 9, 2011

This July, researchers from the U.S. Geological Survey and National Park Service discovered that California Common Murre (Uria aalge californica) chicks had hatched on the Channel Islands for the first time since 1912.

USGS science for a changing world logo
August 1, 2011

Marine biologists are setting up camp in Forks this week, and sea otters will be their quarry on a three-week expedition. Researchers from the U.S. Geological Survey, Seattle Aquarium, Monterey Bay Aquarium and other institutions are studying the health of local sea otters to assess the condition of Washington’s nearshore ecosystem.