Images

Laboratory and facilities at the Ofu unit of the National Park of American Samoa.

PCMSC seminar poster for Manoo Shirzaei, Associate Professor of Geophysics and Remote Sensing, Virginia Tech.

USGS physical scientist Joshua Logan prepares geodetic survey control points within Jenkinson Lake reservoir, downstream of a watershed burned in the 2021 Caldor Fire, El Dorado County, California. 

Bathymetric map of Jenkinson Lake, El Dorado County, California, mapped by sonar surveys after the 2021 Caldor Fire.

Location Map showing the Sur Pockmark Field outlined in green, individual pockmarks are shown as small red dots. This study focuses on the largest section of the pockmark field, from the Lucia Chica Channel down to the San Simeon Channel. AUV surveys are outlined in white and the offshore wind commercial leases are outlined in gray.

A diagram illustrating how the patterns of erosion and deposition associated with three sediment gravity flows could produce the stacked pockmarks and lateral migration observed in AUV-collected Chirp profiles. Long, uneventful episodes of hemipelagic drape (a, d, g, j) are intermittently interrupted by sediment gravity flows that either: 1b.

Animated GIF of Cascadia 1700 tsunami simulation at Salmon River, Oregon. Colored dots are locations where sediment cores were collected.

Researchers Brian Atwater and Wendy Grant Walter conducting prior paleotsunami research at Salmon River estuary, Oregon.

Diagram showing the sequence of land subsidence during an earthquake, followed with sand deposited by a tsunami.

Sediment core with tidal silt, tsunami sand, and marsh peat collected from the Salmon River estuary, Oregon.

Sediment core with tidal silt, tsunami sand, and marsh peat collected from the Salmon River estuary, Oregon.

Map showing location of Salmon River estuary, Oregon. Yellow dots represent estuaries, lagoons, and lakes with evidence of the 1700 tsunami.

View of Salmon River estuary, Oregon, from above. Sediment cores were collected from marshland toward the upper left of the image.

USGS scientists SeanPaul La Selle and Jason Padgett collecting sediment cores at the Salmon River estuary, Oregon.

Image of an oil drilling platform offshore of Huntington Beach, California, with the sun setting behind it.

Sidescan sonar data collected along the San Pedro pipeline offshore of southern California.

On April 19, 2024, in Santa Barbara, California, Susan Zaleski, Donna Schroeder, Dr. Guy Cochrane, and Dr. Mark Page all received FBI Director’s Awards for their participation in the Huntington Beach oil spill case. From left to right, USERT lead Ty Summers, Special Agent Ketrin Adam, Assistant Agent in Charge Sean Haworth, Dr. Guy Cochrane, Donna Schroeder, Dr.

Animated GIF showing corrected thermal imagery of a groundwater plume discharging onto a reef at Ofu, American Samoa. 

Science seminar flyer for Cristián Escauriaza presentation, “A Tale of Two Extremes: Turbulent Transport in the Altiplano and Patagonia”.

Science seminar flyer for Amanda Stoltz's presentation, "Building Resilience to Coastal Hazards: An Analysis of Decision Making and Environmental Justice on Changing Coasts".

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