Images

Sand Dune Cape Henlopen, Delaware.

View from Stony Man in Shenandoah National Park, Virginia.

This image shows ice-front retreat in part of the southern Antarctic Peninsula from 1947 to 2009. USGS scientists are studying coastal and glacier change along the entire Antarctic coastline.

Blue sky begins to break through the clouds over Arctic Ocean ice Sept. 9, 2009.

A male northern pintail duck.

A northern pintail duck wearing a transmitter.

California condors are one of the most endangered birds in North America. In the early 1990s, captive-bred condors were reintroduced into the wild in California. As of January 2010, about 190 condors now live in the wild and more reintroductions are being considered.

Sage-grouse have declined throughout their entire range, largely due to the loss and fragmentation of sagebrush habitat.

A colorful clay-colored sparrow nest. These sparrows live in brushy grasslands and prairie habitats.

Elk congregate on the Camp Creek Feed Ground in northwestern Wyoming.

USGS personnel at work using acoustic doppler on bridge over Wild Rice River. Photo taken at 174th Ave and 124th St southwest of Horace, ND.

Acoustic doppler used to record measurements on Wild Rice River during 2010 flood. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.

The tsunami generated by the M 8.8 earthquake carried many boats onto land - in some cases hundreds of meters inland. The tsunami wave height at this location in Concepcion Harbor (Talcahuano), Chile was about 4-5 meters (12-15 feet).

USGS personnel at work using acoustic doppler on bridge over Wild Rice River. Photo taken at 174th Ave and 124th St southwest of Horace, ND.

USGS personnel at work on bridge over Wild Rice River. Photo taken at 174th Ave and 124th St southwest of Horace, ND.

USGS personnel at work on bridge over Wild Rice River. Photo taken at 174th Ave and 124th St southwest of Horace, ND.

USGS personnel at work on bridge over Wild Rice River. Photo taken at 174th Ave and 124th St southwest of Horace, ND.

Home surrounded by floodwater from Wild Rice River. Photo taken from bridge at 174th Ave and 124th St southwest of Horace, ND.

A well-engineered high rise apartment and two-story building in Talca, Chile suffered no evident damage, though much of the city was affected by the M 8.8 earthquake on Feb. 27, 2010. Many buildings in this city were constructed with adobe or masonry and suffered major collapse.

A one hundred year old adobe building in Talca, Chile suffered near-total collapse during the M 8.8 earthquake on Feb. 27, 2010. Adobe, which is made of clay, sand and straw, is no longer used as a building material in Chile, but ancient structures are still common and can pose a hazard to their occupants.

This photo was taken by USGS seismologist Susan Hough two months after the magnitude-7 earthquake struck Port-au-Prince on Jan. 12, 2010. Dr. Hough traveled to Haiti with USGS colleagues Doug Given, Mark Meremonte, and J. Zebulon Maharrey to install seismometers, which monitor the earth's movement and can detect and measure aftershocks.