Mount St. Helens erupted 38 years ago, May 18, 1980
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![Mount St. Helens erupted 38 years ago, May 18, 1980](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/mt-st-helens-38-yrs.png?itok=GTWVdBli)
Mount St. Helens erupted 38 years ago, May 18, 1980
![WFRC nPCR test for detection of Rs](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/WFRC%20nPCR%20test%20for%20detection%20of%20Rs%20MM.jpg?itok=A40ieIkT)
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.
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.
![WFRC nPCR test for detection of Rs](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/WFRC%20nPCR%20test%20for%20detection%20of%20Rs%202%20MM.jpg?itok=6BlZvuUB)
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. Agarose gel electrophoresis is used for size separation and visualization of amplified DNA sequences.
![USGS hydrologic technician collecting a water-quality sample](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Michelotti_RoseLake.jpg?itok=3hxyUt-v)
U.S. Geological Survey student hydrologic technician Mike Michelotti collects a water-qaulity sample from the Coeur d'Alene River at Rose Lake, Idaho. USGS streamgage 12413810 can be seen in the background. The sample was collected as part of ongoing water-quality monitoring that the USGS conducts in the Coeur d'Alene River basin on behalf of the U.S.
U.S. Geological Survey student hydrologic technician Mike Michelotti collects a water-qaulity sample from the Coeur d'Alene River at Rose Lake, Idaho. USGS streamgage 12413810 can be seen in the background. The sample was collected as part of ongoing water-quality monitoring that the USGS conducts in the Coeur d'Alene River basin on behalf of the U.S.
![USGS streamgage station 13295000, Valley Creek at Stanley, Idaho](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/13295000_20180423.jpg?itok=KTwtAwbN)
USGS streamgage station 13295000, Valley Creek at Stanley, Idaho
USGS streamgage station 13295000, Valley Creek at Stanley, Idaho
![USGS hydrologic technicians collecting water-quality samples](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/12413500_20170316_BEMP.jpg?itok=L8fzEPNR)
U.S. Geological Survey hydrologic technicians Kevin Kirlin (left) and Ryan Smith collect water-quality samples from the Coeur d'Alene River near Cataldo (USGS 12413500) as part of an ongoing monitoring program that the USGS conducts on behalf of the U.S. Environmental Protection Agency.
U.S. Geological Survey hydrologic technicians Kevin Kirlin (left) and Ryan Smith collect water-quality samples from the Coeur d'Alene River near Cataldo (USGS 12413500) as part of an ongoing monitoring program that the USGS conducts on behalf of the U.S. Environmental Protection Agency.
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 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.
![View from the sky of a river surrounded by a heavily forested area and winding through a bare section that used to be a lake.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Elwha-Aldwell-03-12-2018.jpg?itok=lJqEayaK)
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 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.
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.
![Comparison maps indicating short or long times available for earthquake shaking arrival times](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/scenario_evt3_box_0.jpg?itok=tb5SYGFG)
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
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](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/WFRC%20Quantitative%20Culture%20for%20Rs%20Image%202.jpg?itok=OEyQikAP)
Spread plate procedure for quantitative culture Renibacterium salmoninarum from fish tissue or ovarian fluid.
Spread plate procedure for quantitative culture Renibacterium salmoninarum from fish tissue or ovarian fluid.
Mean Annual Streamflow Permanence Probability
Mean Annual Streamflow Permanence Probability
![Variability associated with streamflow permanence predictions](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/STDs_Webpage.jpg?itok=D8HHeWOa)
Variability associated with streamflow permanence predictions
Variability associated with streamflow permanence predictions
![Stream observation points and focal basins for PROSPER project](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Study%20area%20Post%20Review.jpg?itok=ExreZPjp)
Stream observation points and focal basins for PROSPER project
Stream observation points and focal basins for PROSPER project
![Mowed linear fuel breaks along both sides of a gravel road](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Fig%2012%20bottom.png?itok=tFglg_8r)
An example of mowed linear fuel breaks along both sides of a gravel road in southwestern Idaho
An example of mowed linear fuel breaks along both sides of a gravel road in southwestern Idaho
![Left image shows the elevation of a stretch of river, right image shows an aerial photograph of the same stretch of river.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/Elwha_Ortho-DEM_2016.jpg?itok=i6chGdB4)
Digital elevation model (left) and orthomosaic (right) of the middle Elwha River
Digital elevation model (left) and orthomosaic (right) of the middle Elwha River
![GeoGirls 2017 science field camp at Mount St. Helens....](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/vhp_img4986.jpg?itok=ubALKaWz)
Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.
Image of flyer for GeoGirls 2017 science field camp at Mount St. Helens which was held July 30 to August 3, 2017.
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.
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.
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.
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.
![qPCR for the detection of Rs](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/WFRC%20qPCR%20for%20detection%20of%20Rs%201%20MM.jpg?itok=dgHx9kxK)
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. 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.
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.