Images

Bright image: the brightest pixel values throughout the video, useful for identifying the position of maximum wave run-up on the beach, position of all breaking waves, and sea-state.

Variance image: the standard deviation of pixel intensity throughout the video, and it is useful for determining how much variation or movement is occurring at a given location.

I spy with my little (eagle-) eye . . .

After a successful beach survey and installation of remote-sensing cameras on a nearby island, scientists Shawn Harrison and Andrew Stevens spotted this bald eagle near the mouth of the Skagit River, Washington.

View of beach on Whidbey Island, looking north.

View of beach on Whidbey Island, looking south.

Mount St. Helens erupted 38 years ago, May 18, 1980 

Nested polymerase chain reaction (nPCR) for the detection of Renibacterium salmoninarum. Agarose gel electrophoresis is used for size separation and visualization of amplified DNA sequences.

Nested polymerase chain reaction (nPCR) for the detection of Renibacterium salmoninarum. Following two rounds of PCR amplification, samples are pipetted into an agarose gel for electrophoresis.

Orthophoto of the mouth of the Elwha River in Washington. The orthophoto was compiled from images collected with a Ricoh GR camera operating at 2-second intervals and mounted on a Cessna 172 piloted by Rite Bros. Aviation.

Orthophoto (GigaPan) of the former Elwha Dam and former Lake Aldwell, on the Elwha River, Washington, compiled from ultra high-resolution images collected with a Ricoh GR camera operating at 2-second intervals, mounted on a Cessna 172 piloted by Rite Bros. Aviation and processed using Structure-from-Motion techniques.

Orthophoto (GigaPan) of the former Glines Canyon Dam and former Lake Mills, on the Elwha River, Washington, compiled from ultra high-resolution images collected with a Ricoh GR camera operating at 2-second intervals, mounted on a Cessna 172 piloted by Rite Bros. Aviation and processed using Structure-from-Motion techniques.

The choice when issuing earthquake warnings is to: 1) issue alerts for weak shaking and potentially provide long warning times, but risk sending alerts for the many events that do not go on to produce damaging ground shaking, or 2) issue alerts only when ground shaking is expected to be damaging, with the tradeoff that the alert will be sent much later, reducing

Spread plate procedure for quantitative culture Renibacterium salmoninarum from fish tissue or ovarian fluid.

Variability associated with streamflow permanence predictions

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.