Images

USGS employee Anthony Lopez enjoys the boat ride back to port after a long day of sampling sediment in the Barnegat Bay near Seaside Heights, NJ. 

USGS scientist Jennifer Lewicki measures the discharge along a tributary to Hot Springs Creek, Akutan Island, Alaska. Steam (upper left) rises from 3 high-temperature springs that discharge into the tributary.

A hot spring discharges 77°C (~171°F) water into Hot Springs Creek, Akutan Island, Alaska.

Steam rises from degassing fumaroles (middle right) and a boiling pool (middle left) on the flank of Akutan Volcano, Akutan Island, Alaska.

USGS scientist Deborah Bergfeld collects a gas sample from a fumarole on the flank of Akutan Volcano, Akutan Island, Alaska.

USGS AMBLE coordinator Jenny Chipault inspects a ring-billed gull submitted for avian botulism type E testing. Some sick and dead gulls found on Lake Michigan beaches in 2011 had avian botulism.

NOAA Ship Okeanos Explorer in port after completing EX1205L1.  

Photo of the Autonomous Underwater Vehicle (AUV) Sentry being recovered after a dive on the Blake Ridge Diapir. 

Panorama (360 degree) view from the top of a 148-foot (45-meter) observation tower at the Amazon forest study site near Santarém, Brazil.  The instrument on the tower, the USGS High Dynamic Range All-Sky Imaging System (HDR-ASIS), monitors atmospheric conditions and the solar radiation available for photosynthesis.

The USGS High Dynamic Range All-Sky Imaging System (HDR-ASIS) is installed on top of a 148-foot (45-meter) observation tower to monitor changes in atmospheric conditions and the solar radiation available for photosynthesis.

This image shows a low streamflow on the Arkansas River at Syracuse.
Human activity, such as groundwater pumping, land management, reservoir operations and urbanization, has a measurable effect on streamflows in Kansas locally, regionally and statewide, according to a new USGS report.

Adult female walruses on ice floe with young.

Adult female walrus on ice floe.

Adult female walrus on ice floe photographed shortly after receiving a behavior monitoring satellite-linked radio tag from USGS researchers. 

Data acquired from such radio-tags are providing insights on the distribution and behavior of Pacific walruses during a time when their summer sea ice habitat is rapidly changing.

Female walruses and their young must haul out of the water to rest between foraging bouts.

Equipment used by USGS scientists and partners to collect sediment cores at Basin Bayou in Florida. This is part of research by the USGS and partners to understand past hurricane activity in the Gulf of Mexico and northern Atlantic Ocean. Credit: Jessica Rodysill, USGS. 

Adult female walruses on ice floe with young.  Notice the radio tag borne on her her upper mid back. 

This tag will monitor resting and foraging behavior and convey the information back to USGS scientists.

Sensors installed on this 213-foot (65-meter) tower  near Santarém, Brazil are used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to investigate how seasonal variations in climate affects photosynthesis and the uptake of atmospheric carbon dioxide by tropical forests.

Sensors installed on this 213-foot (65-meter) tower  near Santarém, Brazil are used by USGS Geographer Dennis Dye and his U.S., Brazilian and Australian collaborators to improve understanding of how seasonal variations in climate affects photosynthesis and the uptake of atmospheric carbon dioxide by tropical forests.

USGS collaborator Scott Saleska (University of Arizona) and other team members install a remote sensing instrument near the top of a 213-foot (65-meter) tower at the Amazon forest study site near Santarém, Brazil.    Data from the sensor system are being used by Saleska, USGS Geographer Dennis Dye and their U.S., Brazilian and Australian collaborators

USGS collaborator Scott Saleska (University of Arizona) prepares to climb a 213-foot (65-meter) tower at the Amazon forest study site near Santarém, Brazil.  Saleska and other team members installed a remote sensing system near the top of the tower as part of an investigation to improve understanding of how photosynthesis in tropical forests responds to seasona