Images

Scientists conducting Electrical Resistivity Tomography surveys in American Samoa.

Scientists viewing data from a thermal camera installed in the National Park of American Samoa on Ofu.

Coral cores collected within the National Park of American Samoa on the island of Ofu.

Scientists installing thermal camera in the National Park of American Samoa on Ofu.

Underwater image of Valonia fastigiata algae growing on a reef in the National Park of American Samoa on Ofu.

Aerial image of a reef flat on Ofu, American Samoa, from a thermal drone that captures both regular images and radiometric images.

USGS and NPS scientists collecting a coral core within the National Park of American Samoa on Ofu.

Graph showing corrected thermal camera imagery from the National Park of American Samoa on Ofu.

Scientists installing a wind and rain gauge in the National Park of American Samoa on Ofu.

Map of Ofu, American Samoa, showing study sites to investigate outbreaks of Valonia fastigiata algae.

Thermal camera tower method. 1) Original oblique view data 2) Orthorectified nadir view 3) thermal corrections for angular and distance dependence 4) Calibrated thermal image. 

Diagram showing oceanographic and hydrogeologic processes including submarine groundwater discharge on Ofu, American Samoa.

Chart showing relative flood risk per county as a function of sea level rise, from the study Tropical or extratropical cyclones: what drives the compound flood hazard, impact, and risk for the United States Southeast Atlantic coast? 

Graphic showing geographic location of four benchmarking sites used in the study Benchmarking satellite-derived shoreline mapping algorithms.

Salt marsh with ponding in coastal Connecticut, with the sun shining brightly overhead.

Salt marsh in coastal Massachusetts (Cape Cod), photographed during estuarine research field work.

R/V Lutris and the OBS are towed to the Upper Skilak Campground boat launch. This is part of a USGS effort, in collaboration with partners from the Woods Hole Oceanographic Institution Ocean Bottom Seismic Instrument Center, to create a record of past earthquakes from Skilak Lake on the Kenai Peninsula of Alaska.

Skilak Lake, Alaska. A team of USGS scientists, in collaboration with partners from the Woods Hole Oceanographic Institution Ocean Bottom Seismic Instrument Center, are aiming to create a record of past earthquakes from Skilak Lake on the Kenai Peninsula of Alaska.

Hannah Brewer (WHOI), Peter Haeussler (USGS), and Tim Kane (WHOI) preparing the OBS float rig at the Upper Skilak Campground parking lot.

Peter Haeussler (USGS), Brian Andrews (USGS), Hannah Brewer (WHOI), and Tim Kane (WHOI) prepare to launch the OBS float rig at the Upper Skilak Campground Boat Ramp. R/V Lutris (background) was used to tow the rig to the deployment sites.

Brian Andrews (USGS) and Rob Witter (USGS) transfer an electronics and battery box to shore for a land station. This is part of a USGS effort, in collaboration with partners from the Woods Hole Oceanographic Institution Ocean Bottom Seismic Instrument Center, to create a record of past earthquakes from Skilak Lake on the Kenai Peninsula of Alaska.