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Photograph of north and eastern rim of the 9400-year-old Turbid Lake explosion crater showing the primary explosion ejecta rim with a secondary explosion ejecta rim inside the lake-occupied explosion crater. Many, if not most, larger explosion craters have multiple explosion histories and are long-lived hydrothermal systems.
Photograph of north and eastern rim of the 9400-year-old Turbid Lake explosion crater showing the primary explosion ejecta rim with a secondary explosion ejecta rim inside the lake-occupied explosion crater. Many, if not most, larger explosion craters have multiple explosion histories and are long-lived hydrothermal systems.
Collecting a sample for detection of N. fowleri in a Teton County hot spring
Collecting a sample for detection of N. fowleri in a Teton County hot spring
Sample processing equipment for detection of N. fowleri
Sample processing equipment for detection of N. fowleri
Spring sampling location along Little Sandy River in southern Wyoming. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S.
Spring sampling location along Little Sandy River in southern Wyoming. Groundwater discharge that flows into the Upper Colorado River Basin varies in response to drought, which is likely due to aquifer systems that contain relatively young groundwater, according to a new U.S.
Beartooth Mountains looking west northwest from near Beartooth Pass, Wyoming. Photo by Jeff Havig, University of Minnesota, July 20, 2016.
Beartooth Mountains looking west northwest from near Beartooth Pass, Wyoming. Photo by Jeff Havig, University of Minnesota, July 20, 2016.
Filling the teflon churn with water sampled from Laramie River near Laramie
Filling the teflon churn with water sampled from Laramie River near Laramie
An American bullfrom is native to most eastern states, but considered invasive in the moutain west.
An American bullfrom is native to most eastern states, but considered invasive in the moutain west.
In the summer of 1988, a wildfire ravaged the world's first national park, consuming 1.2 million acres in and around the Greater Yellowstone Park ecosystem.
In the summer of 1988, a wildfire ravaged the world's first national park, consuming 1.2 million acres in and around the Greater Yellowstone Park ecosystem.
USGS scientists preparing for filming with BBC/PBS documentary crew making "The Great Yellowstone Thaw"
USGS scientists preparing for filming with BBC/PBS documentary crew making "The Great Yellowstone Thaw"
Biological soil crusts, or biocrusts, are lichens, mosses, and cyanobacteria that grow on the soil surface and are common in the spaces between native plants in arid and semi-arid systems. Biocrusts reduce soil erosion, contribute to nutrient and water cycling, and reduce evaporation and invasion by exotic plants.
Biological soil crusts, or biocrusts, are lichens, mosses, and cyanobacteria that grow on the soil surface and are common in the spaces between native plants in arid and semi-arid systems. Biocrusts reduce soil erosion, contribute to nutrient and water cycling, and reduce evaporation and invasion by exotic plants.
Measuring streamflow from a cableway using an ADCP, Green River blw Fontenelle Reservoir, WY
Measuring streamflow from a cableway using an ADCP, Green River blw Fontenelle Reservoir, WY
Measuring streamflow on Dry Piney Creek
Preparing to measure water level in streambank piezometer, New Fork R
Preparing to measure water level in streambank piezometer, New Fork R
Wade fishing on Big Horn River
Two anglers wade fishing on Big Horn River, Wyoming
Two anglers wade fishing on Big Horn River, Wyoming
Image of whitebark pine cone and seeds.
Image of whitebark pine cone and seeds.
Biologists use road-killed ungulates such as deer, elk, or bison as bait in the traps.
Biologists use road-killed ungulates such as deer, elk, or bison as bait in the traps.
Biologists have immobilized the bear and prepare to lift it out of the trap and onto the tarp for data collection. Once on the tarp the bear is easier to move.
Biologists have immobilized the bear and prepare to lift it out of the trap and onto the tarp for data collection. Once on the tarp the bear is easier to move.
The kerchief over the grizzly bear’s eyes protects it from dust and debris and reduces visual stimulation. The small tubing in its nose, known as a nasal cannula, delivers oxygen to the animal while it is tranquilized.
The kerchief over the grizzly bear’s eyes protects it from dust and debris and reduces visual stimulation. The small tubing in its nose, known as a nasal cannula, delivers oxygen to the animal while it is tranquilized.
One of the first measurements taken is the bear’s weight using a quadpod and electronic scale.
One of the first measurements taken is the bear’s weight using a quadpod and electronic scale.
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.
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.