Images

Image of the Western Fisheries Research Center, Columbia River Research Laboratory, Cook, WA

USGS hydrologist Mark Reid examines an extensional basin in the middle of the Oso landslide deposit.  The headscarp (near-vertical cliff at the back of the landslide) is visible at the top of the image.  The prominent tree is one of many that fell and became perched as the landslide spread out over the river valley.

USGS scientist sampling water in Klamath Lake.

USGS - NOROCK field team in the Northern Cascades studying Hoary marmots and American pika and snowpack dynamics.  

Juvenile steelhead smolts become silvery and scales become loose as they transition into their seawater life history stages.

Beaver swimming in Summer Lake, Oregon.

This image from the European Space Agency's Sentinel-2A satellite offers a breathtaking view of Crater Lake National Park in southern Oregon. It offers something equally important to park managers, scientists, and anyone else interested in land cover change—a view that is highly similar and complementary to Landsat acquisitions.

Beaver eating at Summer Lake, OR

The top plot is the number of located earthquakes per week from the Pacific Northwest Seismic Network's catalog. The bottom plot shows the earthquake depths with time. Earthquakes are plotted as circles with the size of the circle corresponding to the magnitude of the earthquake (see legend).

Map view plot of earthquakes located by the Pacific Northwest Seismic Network from March 14, 2016 through May 4, 2016. Only high-quality locations are shown (8 or more observations with a 130 degree gap or less between observing stations).

Beaver swimming in Summer Lake, OR

During the first few days of Mount St. Helen's earthquake swarm in March 2016, the September Lobe monitoring station (located on the 1980-86 dome) was buried in deep snow and not transmitting data.

A tidal marsh at Billy Frank Jr. Nisqually National Wildlife Refuge, WA.

Image of whitebark pine cone and seeds.

Once a grizzly bear is radio collared, biologists can track its movements with telemetry via airplane.  The IGBST also used the latest telemetry technologies, which allows downloading of GPS data from the radio collar via satellites.

Once a grizzly bear is radio collared, biologists can track its movements with telemetry on foot.   

At capture sites with road access, biologists drive to a trap with a bear inside to set up for collecting biological data. 

Biologists use road-killed ungulates such as deer, elk, or bison as bait in the traps. 

Biologists place a culvert trap in locations that they need data from.  Field crews will set up the culvert trap and check it daily, usually in the morning, to determine if a bear has been captured.  Additionally, trap doors are checked via radio telemetry. 

A biologist measures a grizzly bear’s head length.

Field personnel use bioelectrical impedance to assess body fat percentage of captured bears.  The procedure is similar to how body fat is measured in humans and is based on the resistance of body tissues to the flow of a small, harmless electrical signal.