Images

Elizabeth Pendleton describes USGS work to map the Massachusetts seafloor to State Senator Viriato “Vinny” deMacedo.

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

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.

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.

Hill-shaded bathymetric, backscatter, and photographic data collected by NOAA and the USGS. Backscatter data give indications of seafloor character. In general, low-backscatter intensity (blue) corresponds to finer-grained material, whereas high-backscatter intensity (orange) corresponds to coarser substrate.

The USGS conducted surveys on the inner continental shelf of the Delmarva Peninsula (shown in green) to complement related datasets previously collected in the area by partners NOAA and BOEM. The inset map shows location of the study area.

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.

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

Map of subsea permafrost distributions on the U.S. and Canadian Arctic Ocean margin. The inset map shows the location of the larger map. Subsea permafrost on the Canadian margin was delineated in the 1980s (blue curve). The red curve on the U.S.

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.

Sandy Brosnahan (left) and Jon Borden at Unmanned Aerial Systems (UAS) training in Santa Cruz, California.

Shawn Harrison uses his new skills to check out the surf at Santa Cruz, California.

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

Shawn Harrison uses a GPS-equipped backpack to measure sand elevations during a post-storm survey of beaches in Santa Cruz, California. 

USGS scientist Zafer Defne measures water and sediment movement at Forsythe National Wildlife Refuge, New Jersey. Defne is co-author with Neil Ganju of a 2017 study on how to estimate coastal salt marshes’ potential longevity, based on their sediment budgets and the ratio of open water to vegetation.

Michael Casso, Woods Hole Coastal and Marine Science Center physical scientist,  seeks volunteers from Children’s School of Science students to have their breath measured for carbon dioxide and methane, greenhouse gases USGS scientists measure in the oceans

Woods Hole Coastal and Marine Science Center Oceanographer, Neil Ganju, sharing science at the 2017 Woods Hole Science Stroll outreach event

The USGS Utah Water Science Center and the Woods Hole Coastal and Marine Science Center conducted a collaborative geophysical research effort within Lake Powell, UT-AZ to map the bathymetry of the lake and characterize shallow sediment deposition near the mouths of the San Juan and Colorado Rivers.

Area map of National Seafloor and Habitat Mapping Studies-Atlantic

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

Fieldtrip participants at the former San Clemente Dam site.