Images

Interferogram created from data collected on September 29, 2021, and October 6, 2022, by the Sentinel-1 satellite system. Colored fringes indicate a change in distance (called range change) between the satellite and ground surface that is caused by surface deformation.

Multi-GAS station installed in the Mud Volcano area of Yellowstone National Park under permit YELL-2022-SCI-7082.  The station was situated on stable, cool ground away from the edge of thermal features to ensure no impact to the features.

A cutbank exposure near West DuNoir Creek, Wyoming, illustrates the differences between bedrock and surficial geologic mapping. On bedrock maps this location is mapped as the Eocene (55–34 million years old) Indian Meadows Formation, which corresponds to the bedrock visible in the stream bed.

Photo of a newly eroded cliff along the Gardner River, Yellowstone National Park, showing the unconsolidated layers of sandstone and gravel. USGS photo by David Roth, September 5, 2022.

Gardner River chloride flux monitoring site before and after the June 2022 flooding in Yellowstone National Park.  (Left) Site prior to June 2022 storm. Note that the riverbank is near to the base of the fallen tree. USGS photo by Blaine McCleskey, May 21, 2014.  (Right) Site after June 2022 storm. The probe is buried under ~4 feet of debris.

Landsat 8 thermal infrared images of Yellowstone showing daily and seasonal differences.  In these greyscale images, bright pixels are warmer and dark pixels are cooler.  In the daytime images (A and C), you can see the effects of topography, with darker (cooler) pixels like shadows on north-facing slopes and brighter (warmer) pixels on sun-facing slopes.&

Dr. Cathy Whitlock (Montana State University) in the “core description boat” on Twin Butte Lake, Yellowstone National Park, with a freshly extruded one meter (3 feet) sediment core. Cores are described and measured in the field before being carefully wrapped for transport to the lab. Photo taken under NPS research permit YELL-2022-SCI-0009 by S.

A string of pack mules led by the National Park Service packers Hannah Miller and Ben Cunningham carrying lake coring equipment to a small backcountry lake in Yellowstone National Park; photo taken under NPS research permit YELL-2022-SCI-0009 by S. Hurwitz in August 2022.

Extensive silica sinter breccia field along the Imperial Meadows Trail in the Lower Geyser Basin of Yellowstone National Park looking southwest towards Twin Buttes. The inset image shows a place where a passing hiker’s footstep brushed away the white surface sinter, revealing bright green phototrophic microorganisms underneath (boot toe for scale).

Hillside Springs group at the margin of the Summit Lake post-caldera rhyolite lava flow (the looming cliff) in Upper Geyser Basin, Yellowstone National Park.  In the past few thousand years, the springs have occasionally deposited travertine, which can be found at the bottom of the hill below the active springs.

Lake coring operations at Twin Buttes Lake, Yellowstone National Park,  (a) Assembled lake coring platform being launched into the Twin Buttes Lake and (b) anchored in the core sampling location. Photos taken under NPS research permit YELL-2022-SCI-0009 by S. Hurwitz (a) and L. Harrison (b) in August 2022.

Thermal images and accompanying photographs of hot areas on Firehole Lake Drive in Lower Geyser Basin, Yellowstone National Park.  Top shows a hot pothole and deflected asphalt near Firehole Spring (images by Mark Wolf and Kiernan Folz-Donahue, July 13, 2022).  Bottom shows thermal road damage between Great Fountain Geyser and White Dome Geyser, which is v

Boiling River, Yellowstone National Park, before and after the June 2022 flooding.  (Left) Visitors to Yellowstone National Park enjoy the warm waters of the Gardner River where it is joined by Boiling River, near Mammoth Hot Springs.  Yellowstone National Park photo by Jim Peaco, July 30, 2014.  (Right) Aerial view of Gardner River and Boiling River,

Discharge data from the Yellowstone River (red line) near the outlet of Yellowstone Lake compared to seismic data recorded at station YUF near the Upper Falls of the Yellowstone River during June 11–16, 2022.

Map of Yellowstone showing the location of seismic stations YSB and YUF (yellow triangles) as well as the stream gages (red triangles) at Lamar River (LRG) and the Yellowstone River (YRG) at the outlet of Yellowstone Lake.

Discharge data from the Lamar River (red line) compared to seismic data recorded at station YSB near Soda Butte Creek (a tributary of the Lamar River) during June 11–16, 2022.

Front cover of the Yellowstone Volcano Observatory’s Volcano and Earthquake Monitoring Plan for the Yellowstone Caldera System, 2022–2032.

Map of SNOTEL snowpack telemetry sites (blue dots) and streamgages (red dots) in and around Yellowstone National Park.

Yellowstone River level (left) and discharge (right) during June 9–16, 2022, measured at the Corwin Springs streamgage just north of Yellowstone National Park (https://waterdata.usgs.gov/mt/nwis/uv/?site_no=06191500&PARAmeter_cd=00065,00060,00010).  The

Outcrop of the Tuff of Lost Creek near Sepulcher Mountain in Yellowstone National Park.  Photo by Natalie Kraugh, Montana State University, on June 8, 2022.

Photograph of the west side of Mount Everts taken from Sepulcher Mountain. The linear features seen on the western face are sedimentary rocks running north to south. (Photo by Jess Condon, June 8, 2022)