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Whiskeytown National Recreation Area Post-fire Recovery

A landscape at Whiskeytown National Recreation Area 2 months and 9 months after summer 2018's Carr Fire near Redding, California, where USGS WERC researchers are studying fire impacts, post-fire vegetation recovery, and post-fire erosion and debris flows.

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Aerial view west across the upper part of Medicine Lake Volcano tow...

Aerial view west across the upper part of Medicine Lake Volcano tow...

Medicine Lake lies within the shallow basin of Medicine Lake caldera. Glass Mountain flow, draped over the east side of the volcano, is the youngest lava flow at the volcano. The northeasternmost dacite tongue extends nearly to the bottom of the photo (distal lobes are outlined to enhance visibility).

Image: Suisun Slough, California

Suisun Slough, California

A small slough in Suisun Slough in the Suisun Bay, California.

Generalized regional geologic map emphasizing the location, extent, and ages of large volcanic centers including those in Lassen

Generalized regional geologic map emphasizing the location

Generalized regional geologic map emphasizing the location, extent, and ages of large volcanic centers including those in Lassen Volcanic National Park and vicinity, California.

This image shows the brightest pixel values captured during 10 minutes of video.

Santa Cruz Main Beach video camera bright image

Video camera bright image at Main Beach in Santa Cruz, California, looking eastward. Learn more about the cameras and how we're using them to study coastal change.

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Image of the front page of Sound Waves, Sept. - Oct. 2011
March 22, 2019

Sound Waves, Sept. - Oct. 2011

The stories in the Sept. - Oct. 2011 issue of Sound Waves:

https://archive.usgs.gov/archive/sites/soundwaves.usgs.gov/2011/10/

High-Resolution Multibeam Mapping of Mid-Atlantic Canyons to Assess Tsunami Hazards 

USGS Scientists Develop System for

View from Lookout Mountain of Obsidian Dome and surrounding area....

Lookout Mountain of Obsidian Dome, Long Valley Caldera

Photo points out some of the sites highlighted in the Field Guide.

Mammoth Mountain, California (Gooogle Earth image) with elevated ca...

Mammoth Mountain, CA (Gooogle Earth image) with elevated carbon dio...

Mammoth Mountain, California. Black lines are mapped faults, the colored regions are contours of carbon dioxide fluxes mapped in various degassing and tree-kill areas in 2011-2012. Red outlined areas indicate other tree-kill areas that were not measured during this survey. Rainbow scale is the amount of carbon dioxide, measured in grams per square meter, released per day

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Geologist examining highly vesciculated obsidian in the Obsidian Do...

Geologist examining highly vesciculated obsidian in the Obsidian Do...

Geologist examining highly vesciculated obsidian in the Obsidian Dome squeeze-up.