Images

Mean Annual Streamflow Permanence Probability

Digital elevation model (left) and orthomosaic (right) of the middle Elwha River

Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.

Fluorescent colors dominate this dreamlike scene. The orange shapes look like glowfish in a fanciful underwater world. Those glowfish are actually clouds, and the neon green represents mountains, including Mount Rainier, near Seattle, Washington.

Mount St. Helens, as viewed from the East-Northeast. The inside of the crater rim is just visible in the upper right of the mountain.

Photos of survey equipment used during surveys of the Elwha River delta, Washington, from 2010-2017, showing:

Tissue sections are mounted on glass slides, stained and examined with a microscope that magnifies cellular details up to 2,000 times with brightfield or fluorescence imaging. Microscopes are used in our research to understand the pathological changes caused by infectious agents such as bacteria, fungi, parasites and viruses.

Quantitative Polymerase Chain Reaction (qPCR) assay for the detection of Renibacterium salmoninarum DNA. A nucleic acid sequence detection system is shown.

Quantitative polymerase chain reaction (qPCR) assay for the detection of Renibacterium salmoninarum DNA. Observation of qPCR results on the screen of a sequence detection system.

Hells Canyon on the Snake River.

Direct fluorescent antibody test (DFAT) for the detection of Renibacterium salmoninarum in tissues. Fluorescing R. salmoninarum cells are visible on a slide.

Aerial view of Spirit Lake (center) looking north from above the crater of Mount St. Helens. The lake's outlet to the west (left) was blocked by the 1980 landslide, which required a new engineered outlet to maintain the lake at a safe level. A tunnel was drilled through a bedrock ridge on west side of lake in 1984-1985. Glacier covered Mount Rainier in distance.

The Cle Elum River, a tributary of the Yakima River in Washington state. Sockeye salmon reintroduction efforts were initiated in the Cle Elum River by the Yakama Nation and Washington Department of Fish and Wildlife in 2009.

Sockeye salmon preparing to spawn upstream of Cle Elum Dam, Washington.

Skagit Bay bathymetry

Between August 19-22, 2017, 140 seismometers were deployed around Mount St. Helens. Instruments were placed on top of the 2004-2008 lava dome, the 1980-86 lava dome, the 1980 crater floor, and around the volcanic cone.

Mount St. Helens, as viewed from the Castle Lake Overlook.

GeoGirls collect water quality data at Coldwater Lake and sieve landslide deposits to learn more about the impact of the 1980 eruption and the transport of volcanic sediment.

GeoGirls deploy seismometers at Mount St. Helens and learn how to interpret earthquake data.

GeoGirls collect water samples and flow measurements to model the transport of volcanic sediments.

A balloon and simple point-and-shoot camera is used to collect digital images that are stitched together to build a 3D elevation model of the landscape.