Images

(Left) EPA and Kent State University scientists (left-to-right), Dr. Janet Nestlerode, Taylor Michael, and Dr. Elizabeth Hinchey, on the R/V Muskie with the SPI cam. (Right) High-resolution image of a cross-section of the sediment including the sediment water interface to ~25 cm below surface from a site in the central basin of Lake Erie.

Example of a high-oblique photograph taken with an unmanned aerial system (UAS), or drone, of the coastal bluffs of Barter Island on North Slope of Alaska. The photographs from different time periods can be compared, using a technique called structure-from-motion photogrammetry, to measure changes in the coastal bluffs.

Cordell Johnson holds his hand next to a polar bear's footprint.

USGS scientist Chelsea Stalk stands on a floating sled that enables sub‐bottom surveying in shallow water, nearshore, and shore‐face environments. The sled is equipped with an EdgeTech SB‐512i CHIRP system and single‐beam sonar. This equipment is used to collect seismic sub‐bottom profiles and single‐beam bathymetry.

Example of a thermal photograph of Barter Island's bluffs, on the North Slope of Alaska. Two USGS scientists stand waving on the right side of the photo. Lighter areas are warmer, darker areas are colder. Thermal photography makes it easy to detect areas of permafrost, or the lack thereof.

An remotely piloted aircraft (RPA) or drone, equipped with a camera, sits on the Arctic tundra awaiting a radio signal that tells it to fly.

USGS scientists use specialized equipment to measure sediment dynamics in nearshore and coastal systems. Access by boat is limited in these areas, so personal watercraft are equipped with GPS and echosounders to collect bathymetric data. Seismic sleds are pulled along transects from the beach across the water to measure changes in sediment type below the water.

Horiba Aqaulog - simultaneously measures absorbance spectra and fluorescence Excitation-Emission Matrices

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.

This timelapse video covers about 30 minutes of activity at the water pond in Halema‘uma‘u at the summit of Kīlauea. Water appears to be flowing into the pond from several locations, including the southern boundary (right side in this image). A small amount of material is also seen floating on the surface at the eastern end of the pond (top of image).

Both Powell’s crew and this year’s modern expedition camped along the river with views of cottonwood galleries. 

USGS scientists collected the adult life stage of emerging aquatic insects each evening of the recent Sesquicentennial Colorado River Exploring Expedition.

HVO field engineers and staff conducted quarterly work at a deep borehole, known as the Keller Well, at the summit of Kīlauea Volcano today (Sept. 24). They lowered a sensor into the well to measure the distance between the ground surface and the top of the water table, which was 505 m (1657 ft) below the ground surface today.

Pacific walruses jousting with their tusks on the eastern shore of the Chukchi Sea, Alaska  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

Pacific walruses resting on the beach of the eastern shore of the Chukchi Sea (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)

A storm-tide sensor deployed on Florida's Indian River Lagoon, at Indian River Drive in St. Lucie County, on Aug. 30, 2019 in preparation for Hurricane Dorian. NOTE: Though the story is about the Carolinas, the photo is from Florida. No photos of the Carolinas deployment were available at the time this story was published.

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.

This timelapse video covers about 25 minutes and shows the circulation in the water pond in Halema‘uma‘u. There appears to be an influx of water along the southern shoreline (right side in this image). A broader eastward flow of water (towards the top of the image) is evident. The video is shown twice.

White-nose syndrome (WNS) has continued to spread rapidly. Bats with white-nose syndrome have been confirmed in 33 states and seven Canadian provinces as of August 2019.

Windfarm at Quinhagak, Alaska. In this photo, the telephone poles are leaning due to permafrost thaw.

The USGS and partners study the effects of climate change on the Greater Yellowstone Ecosystem. This image shows a research raft on Spider Lake, Wind River Indian Reservation, Wind River Range, Wyoming.