Images

John Erbland, Hydrologic Technician with the USGS South Carolina Water Science Center, holds a white board with information on the Hurricane Irene storm surge sensor deployment on a pier by the U.S. Coast Guard Station in the town of Wrightsville Beach.

Photo of chimney damage at a house in Louisa County, Virginia. This was a result from a magnitude 5.8 earthquake in Virginia on August 23, 2011.

Large numbers of walruses came ashore to rest near the community of Point Lay, Alaska when sea ice had dissipated from their offshore foraging grounds in the eastern Chukchi Sea during late August through October of 2011.  Walruses in these groups cycled between this coastal resting area and their foraging grounds, both near-shore and offshore.

Large numbers of walruses came ashore to rest near the community of Point Lay, Alaska when sea ice had dissipated from their offshore foraging grounds in the eastern Chukchi Sea during late August through October of 2011.  Walruses in these groups cycled between this coastal resting area and their foraging grounds, both near-shore and offshore.

Large numbers of walruses came ashore to rest near the community of Point Lay, Alaska when sea ice had dissipated from their offshore foraging grounds in the eastern Chukchi Sea during late August through October of 2011.  Walruses in these groups cycled between this coastal resting area and their foraging grounds, both near-shore and offshore.

Large numbers of walruses came ashore to rest near the community of Point Lay, Alaska when sea ice had dissipated from their offshore foraging grounds in the eastern Chukchi Sea during late August through October of 2011.  Walruses in these groups cycled between this coastal resting area and their foraging grounds, both near-shore and offshore.

Large numbers of walruses came ashore to rest near the community of Point Lay, Alaska when sea ice had dissipated from their offshore foraging grounds in the eastern Chukchi Sea during late August through October of 2011.  Walruses in these groups cycled between this coastal resting area and their foraging grounds, both near-shore and offshore.

Large numbers of walruses came ashore to rest near the community of Point Lay, Alaska when sea ice had dissipated from their offshore foraging grounds in the eastern Chukchi Sea during late August through October of 2011.  Walruses in these groups cycled between this coastal resting area and their foraging grounds, both near-shore and offshore.

A USGS scientist adjusts an air pump used to measure emission of polycyclic aromatic carbons (PAHs) into the air.

Fog is common near open-water leads in the Arctic Ocean, and leaves ice everywhere aboard the ship.  A clear blue sky is a bright background to show the thick ice left after the fog lifted.

USGS scientists prepare a sampler used to measure emission of polycyclic aromatic carbons (PAHs) into the air.

A professional applicator applies coal-tar-based sealcoat to a test plot used to measure emission of polycyclic aromatic carbons (PAHs) into the air.

River otters in Olympic National Park trigger a movement-activated camera without activating the wire mesh box trap (left) used by scientists to capture the animals to attach radio transmitters and monitor their movements.

Kijik Lake in Lake Clark National Park and Preserve, Alaska. USGS researchers study salmon ecology in cooperation with NPS.

Construction of the two newest additions to the U.S. Geological Survey Great Lakes Science Center's fleet of large research vessels is nearing completion. The two new USGS research vessels will replace the aging vessels on lakes Erie and Ontario.

Construction of the two newest additions to the U.S. Geological Survey Great Lakes Science Center's fleet of large research vessels is nearing completion. The two new USGS research vessels will replace the aging vessels on lakes Erie and Ontario.

Extensive, contiguous mortality of piñon pine, ponderosa pine, and Douglas-fir trees, killed in the first afternoon and evening of the 2011 Las Conchas Fire in the Jemez Mountains, New Mexico. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, and high-severity fire.

Water samples using a CTD rosette were taken down to  4,600m in the Canadian Basin in order to investigate ocean acidification.  The water was analyzed shipboard for pH using a spectrophotometer.

Water samples using a CTD rosette were taken down to  4,600m in the Canadian Basin in order to investigate ocean acidification.  Water samples were collected from each of the bottles and analyzed shipboard.

Water samples using a CTD rosette were taken down to  4,600m in the Canadian Basin in order to investigate ocean acidification.  The water was analyzed shipboard for pH using a spectrophotometer.

Water samples using a CTD rosette were taken down to  4,600m in the Canadian Basin in order to investigate ocean acidification.  The water was analyzed shipboard for pH using a spectrophotometer.