Images

USGS scientist Margaret Lamont measures a Kemp’s ridley sea turtle recovered from the cold waters of St. Joseph Bay. Rescued sea turtles are weighed, measured andmarked with an identifier, and are examined to determine if they need medical attention. Photo by USGS. 

USGS scientist Margaret Lamont, who has studied sea turtles in Florida since 1995, carries a cold-stunned green sea turtle from the mud flats of St. Joseph Bay. Photo by USGS.

David Seay, a contract biologist working with the USGS, holds a green sea turtle that is recovering from the effects of cold-stunning in St. Joseph Bay. Photo by Margaret Lamont, USGS.

This image of the Ross Archipelago near the McMurdo Station in Antarctica was acquired January 1, 2018, by Landsat 8, almost exactly a decade after USGS and NASA officials signed off on a Landsat Data Distribution Policy that made Landsat images free to the public.

Willamette River side channel, Snag Boat Bend, Finley Nat'l Wildlife Refuge near Corvallis, Oregon

Eroding bluffs on Moss Landing State Beach, California, March 2016

Eroding permafrost on Alaska’s Arctic Coast. Inundation of permafrost like this produced subsea permafrost

Exposed bedrock on the beach during very low (negative) tide at Isla Vista, California

Gas hydrate (white material) binding together coarse-grained sediments made up of pebble-sized rocks. This sample was recovered during a project to explore permafrost-associated gas hydrates in Canada’s Mackenzie Delta.

A large outbreak of gypsy moth (Lymantria dispar) caterpillars attacked the hardwood forests of the northeastern United States in 2016. A fungus (Entomophaga maimaigaM) introduced from Japan has kept gypsy moth populations at relatively low levels since the late 1980s.

 Map of distribution of fine- and coarse-grained sand, Stellwagen Bank.  Blue and purple = boulder ridges.  Redlines = leading edges of sand sheets

Multichannel seismic-reflection profile across the Queen Charlotte-Fairweather fault, acquired aboard the R/V Norseman in August 2016. Dashed red line in enlarged section at lower right is the Queen Charlotte-Fairweather fault. m, meter; km, kilometer; ms, millisecond.

Orthomosaic images of Matanzas, Florida, from (a) before and (b) after Hurricane Matthew, and (c) a digital elevation model (DEM) showing the associated topographic change. Note, these results were produced by applying Structure-from-Motion (SfM) to NOAA oblique photographs, but similar results can be obtained using UAS aerial imagery.

Perspective views of multibeam bathymetry data acquired by the USGS aboard the R/V Medeia. Shallower depths in red. Arrows point to the distinct line in the seafloor associated with the Queen Charlotte-Fairweather fault.

Resurrection Bay on August 8, 2016. The water appeared calm in the shelter of the inner bay, but closer to the entrance, swells coming in from the Gulf of Alaska were breaking on a small beach where the three boaters had capsized.

The 3DR Solo with GoPro Hero4 camera and gimbal. Coming to a beach near you soon.

USGS pilot Sandy Brosnahan and Senate Pro Tempore Marc Pacheco discuss the use of Umanned Aerial Systems (UASs, also known as drones) to collect data in coastal environments.

“Variance” images derived from the same videos used in the studies. Left, Madeira Beach; right, Cowells Beach. In a variance image, the more variation in light intensity at a given pixel, the brighter the value assigned to that pixel. Bright areas indicate many changes in light intensity, caused by a lot of movement.

Close-up views of the toe of the Mud Creek landslide created from air photos taken May 27 (top), June 13 (middle), and June 26 (bottom). Caltrans built roads on top of the slide for assessment and monitoring activities.

3D rendering of Great Sand Dunes National Park and Preserve, from 3DEP DEMs

While these gates might look similar to the entry way of a medieval castle, they are actually part of a scientific experiment that will help scientists design more effective fish passage structures for American Shad. Photo by Kevin Mulligan, USGS.