Images

Alpine summits often support a great variety of vegetation species despite harsh environmental conditions. Bison Mountain GLORIA plot, Glacier National Park, Montana.

Global distribution of GLORIA sites.

USGS scientists collect field data at Gulkana Glacier in the eastern Alaska Range. The checkerboard sampling pattern in the foreground indicates where snow pit density measurements were collected.

A scientist checks data collection on multiple sensors at the Gulkana Glacier weather station where snow blankets the glacier surface. 

Image showing the overview of a study site in the steep terrain of the Bridger Mountains of southwest Montanataken by an Uncrewed Aircraft System (UAS) while collecting data. The site’s complex terrain and topography are being studied to gain insights into snow depth and distribution in previously inaccessible areas.

The SQUID-5, or a Structure-from-Motion (SfM) Quantitative Underwater Imaging Device with 5 cameras is a towed surface vehicle with an onboard Global Navigation Satellite System (GNSS) and 5 downward-looking cameras with overlapping views of the seafloor.

Here, Caitlin Reynolds sits on the R/V Pelican next to a sediment trap that collects samples in the Gulf of America.

A CTD-rosette is a commonly used instrument that measures conductivity (that can inform scientists about salinity), temperature, and depth (CTD). As the instrument is lowered into the water--sometimes down to great depths--the cylinders around will open at various depths to collect water samples at discrete locations throughout the water column.

Caitlin Reynolds of the USGS St. Petersburg Coastal and Marine Science Center secures a sediment trap, retrieved from the bottom of the Gulf of Mexico on board the R/V Pelican.

A beautiful sun set over the Gulf of Mexico from the stern of the R/V Pelican.

A large winch on the stern of R/V Pelican is used to retrieve two sediment traps from the bottom of the Gulf of Mexico.

This piece of a core sample taken from offshore of the Fort Lauderdale region of Florida is from an elkhorn coral that lived 6,200 years ago. Coral type, orientation of corallites, and evidence of other fauna and characteristics within the core sample are used to determine how reliable the coral sample is to use for past sea-level reconstruction.

This core sample was taken from an elkhorn coral reef offshore of the Fort Lauderdale region of Florida. Samples from coral skeletons are taken from numerous locations in the core for radiocarbon dating, which tells scientists the age of each coral and of sections within the reef. The corals in this core lived from 7,100 to 6,200 years ago.

The SQUID-5, or a Structure-from-Motion (SfM) Quantitative Underwater Imaging Device with 5 cameras is a towed surface vehicle with an onboard Global Navigation Satellite System (GNSS) and 5 downward-looking cameras with overlapping views of the seafloor.

The Uncrewed Aircraft System (UAS) landing zone with the study site in the background. Bridger Mountains, MT.

Scientists collect alpine plant species and distribution data to complete a GLORIA site inventory on the summit of Seward Mountain, Glacier National Park, Montana.

Scientists use grids to collect alpine plant data according to GLORIA protocols on the summit of Bison Mountain in Glacier National Park, Montana.

Researchers evaluate vegetation during a GLORIA alpine plant survey near the summit of Seward Mountain in Glacier National Park, Montana.

A USGS marine sediment core from southern Maryland. The changes in deposition at the PETM are clearly apparent in the core as it changes abruptly from dark sand (lower right side of box is oldest) to lighter clay (upper left side of box is youngest), indicating sudden environmental changes associated with a large pulse of atmospheric carbon.

Marci Robinson collects sediment and fossilized shell samples from the Yorktown Formation in Virginia.

USGS scientists at the Northern Rocky Mountain Science Center use repeat photography to document glacier change and as a communication tool.