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MOU
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Salt Marsh Harvest Mouse (Reithrodontomys Raviventris)
San Francisco Bay — which has already lost the majority of its marsh habitat since the 19th Century — could lose even more marshes by the year 2100 due to sea level rise, according to a new USGS report. Animations, graphs and data from the USGS Open File Report 2013-1081 and th... 
USGS Scientist Conducting Amphibian Research
Dr. Erin Muths (ARMI scientist, USGS) sampling frogs at a field site on Mt. Evans, Colorado....
Bull Trout and Westslope Cutthroat Trout
A native bull trout swims in the cool waters of the Flathead River near Glacier National Park, Montana. The tail end of a native Westslope cutthroat trout can be seen below....
Mountain Goat
A mountain goat observed during a survey in the Olympic Mountain of Washington State....
When Elk are Excluded, Aspen Growth Dramatically Increases
Climate change in the form of reduced snowfall in mountains is causing powerful and cascading shifts in montane plant and bird communities through the increased ability of elk to stay at high elevations over winter and consume plants. Here, you can see an example of the difference in aspe...
Imagery Provides Clues to 2005 Alaskan Landslide
New imagery provides evidence that meltwater played a significant role in producing the Sept. 14, 2005 massive landslide that originated from just below the summit of the 10,616 feet high Mount Steller, Alaska. The slide was one of the largest, non-earthquake generated Alaskan landslides ever observ...
Volcanic Gas Sampling
Christoph Kern acquires ultraviolet images of volcanic gas over the dome and crater of Mount St. Helens. Although practically invisible to the human eye, sulfur dioxide absorbs ultraviolet light and appears dark in images captured by the equipment. Sulfur dioxide is typically emitted from magma as i...
Tracking Subsurface Water
Jeff Wynn, Herb Pierce and Chris Lockett (R to L) observe the incoming data used to measure water conductivity in the deep (900+ m) subsurface at Mount St. Helens. Water, from rain, melting snow and ice, seeps into the rubble of the crater floor. The water fills the pore spaces and interacts with st...
Collecting Volcanic Gas Samples
Steven Ingebritsen (lower right, in blue hat) kneels in the warm mud as he collects samples of the gases emitted from the fumaroles on the north side of Crater Rock on Mount Hood. The samples are taken back to the laboratory for an analysis of the gases' chemical composition. By routinely collecting...
Mapping Glacial Advance
A geologist finishes field notes after mapping the extent of Crater Glacier at Mount St. Helens. Crater Glacier, formed by the accumulation of snow and rocks falling from the inside of the crater rim and walls, began to deform and flow in 1996. Over the past five years, Crater Glacier's terminus has...
TDEM Aerial Geophysical Survey
Suspended 100 feet below the helicopter, a hexagonal-shaped Time Domain Electromagnetic and Magnetic (TDEM) survey instrument collects and records geophysical measurements along the eastern flank of Mount St. Helens. TDEM is an exploration technique in which electric currents are induced in the Eart...
Science Teachers Explore Mount Rainier
Members of the USGS Cascades Volcano Observatory and National Park Service provide a week-long opportunity for teachers to explore Mount Rainier National Park conducting inquiry-based volcano science activities. Here, teachers measure and record the amount of snow that melts over a one-hour period t...
Fog in the Valley
Standing on the Earth and Dam at Cougar as the fog rolled in between the snow capped mountains....
Fading Reflections
Climate change and warming temperatures affect all landscapes high and low – including these delicate alpine meadow ecosystems being studied by the USGS Western Ecological Research Center....
Moose Mountain Creek
Moose Mountain Creek near Alameda Dam, Saskatchewan, Canada. Photo taken by USGS personnel on a Civil Air Patrol flight....
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Page Last Modified: Wednesday, January 09, 2013
