Images

Craig Lee holds the ice drill with the end of the first ice core segment exposed.  The sample will next be measured, logged, and processed in the field. 

Mike Jayred runs the drill while Greg Pederson stabilizies the outer barrel.  Craig Lee and Danny Stahle wait to assist with extraction of the first meter of ice.

An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem.

An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem

Craig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.

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

Sample processing equipment for detection of N. fowleri

Beartooth Mountains looking west northwest from near Beartooth Pass, Wyoming. Photo by Jeff Havig, University of Minnesota, July 20, 2016.

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.

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.

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"

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 on Dry Piney Creek

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

Image of whitebark pine cone and seeds.