Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
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Brewer's Sparrow Close Up
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Brewer's Sparrow Wing
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's Sparrow Back
Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Radio-Tagged Walrus
USGS scientists can follow radio-tagged walruses remotely as they move around the Arctic Basin.
USGS scientists can follow radio-tagged walruses remotely as they move around the Arctic Basin.
Walruses in Chukchi Sea
Walruses resting on an ice floe in the Chukchi sea.
Walruses resting on an ice floe in the Chukchi sea.
Walruses in Chukchi Sea
Walruses resting on an ice floe in the Chukchi sea.
Walruses resting on an ice floe in the Chukchi sea.
Brewer's Sparrow Nest
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Scientists in Chukchi Sea
Scientists travel to the Chukchi and Bering seas to radio-tag walruses.
Scientists travel to the Chukchi and Bering seas to radio-tag walruses.
Brewer's Sparrow Nest
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Receding Shoreline
Receding shoreline on the east side of the Salton Sea, California.
Receding shoreline on the east side of the Salton Sea, California.
Receding Shoreline
Receding shoreline on the east side of the Salton Sea, California.
Receding shoreline on the east side of the Salton Sea, California.
USGS automated water-quality sampler in Sequoia National Park, 2010
USGS automated water-quality sampler in Sequoia National Park, 2010USGS automated water-quality sampling equipment in Yosemite National Park, 2010. Photograph by Harrison Forrester, National Park Service
USGS automated water-quality sampler in Sequoia National Park, 2010
USGS automated water-quality sampler in Sequoia National Park, 2010USGS automated water-quality sampling equipment in Yosemite National Park, 2010. Photograph by Harrison Forrester, National Park Service
Medano Creek Wildfire
Medano Creek after wildfire.
Looking Southeast Along Kilauea TEB Tube System
View looking southeast along the fuming trace of the TEB tube system. The growing rootless shield field is in the background just above and to the left of center frame. The low, rounded shape of the shields--especially the shield in shadow to the left--are evident in this photo.
View looking southeast along the fuming trace of the TEB tube system. The growing rootless shield field is in the background just above and to the left of center frame. The low, rounded shape of the shields--especially the shield in shadow to the left--are evident in this photo.
Native Fish and Wildfire
Colorado-native Rio Grande Cuttroat Trout salvaged after Medano Creek wildfire, Great Sand Dunes National Park, Colorado.
Colorado-native Rio Grande Cuttroat Trout salvaged after Medano Creek wildfire, Great Sand Dunes National Park, Colorado.
Yellowstone Temperature Logger
Yellowstone Volcano Observatory temperature logger and radio transmitter installed in a weatherproof case under a public boardwalk in Yellowstone National Park. The white cable leads to a temperature sensor in the water under the rocks.
Yellowstone Volcano Observatory temperature logger and radio transmitter installed in a weatherproof case under a public boardwalk in Yellowstone National Park. The white cable leads to a temperature sensor in the water under the rocks.
Upper Mississippi River, Pool 7
This is an aerial view looking south from above Pool 7 of the Upper Mississippi River near Trempealeau, WI. The navigation dam which creates the pool appears slightly below the horizon in the upper left quadrant. Wing dams are evidenced by the rippling water in the river channel as they direct the flow toward the main channel. The complex backwater
This is an aerial view looking south from above Pool 7 of the Upper Mississippi River near Trempealeau, WI. The navigation dam which creates the pool appears slightly below the horizon in the upper left quadrant. Wing dams are evidenced by the rippling water in the river channel as they direct the flow toward the main channel. The complex backwater
North Dakota Sky, Water, and Prairie
View near a groundwater well in North Dakota.
View near a groundwater well in North Dakota.
From Bluff to Backwater
This is an aerial view of Pool 7 of the Mississippi River south of Trempealeau, WI. This photo highlights the different habitats for plants and wildlife from the bluffs that parallel the river to its quiet backwaters. Balanced with that is the fact that the Mississippi River is a commercial highway as well as a haven for recreational uses.
This is an aerial view of Pool 7 of the Mississippi River south of Trempealeau, WI. This photo highlights the different habitats for plants and wildlife from the bluffs that parallel the river to its quiet backwaters. Balanced with that is the fact that the Mississippi River is a commercial highway as well as a haven for recreational uses.
Honolulu Geomagnetic Observatory
Pacific Tsunami Warning Center building.
Pacific Tsunami Warning Center building.
Instrumentation Array, Beaver Creek Near Michael Lake, Alaska
Instrumentation Array, Beaver Creek Near Michael Lake, AlaskaInstrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.
Instrumentation Array, Beaver Creek Near Michael Lake, Alaska
Instrumentation Array, Beaver Creek Near Michael Lake, AlaskaInstrumentation array with a YSI multiparameter sonde, a dissolved CO2 sensor, and a CDOM sensor.