Images

Site maps of two sections of the southern California coast with high rates of beach narrowing, from the study Net widening of Southern California beaches.

Site maps of three sections of the southern California coast with high rates of beach widening, from the study Net widening of Southern California beaches.

Aerial nadir view of a sandy shoreline in southern California.

Integrated beach change for the northern, central, and southern regions of California, from the study Net widening of Southern California beaches.

Study locations in San Pablo and Grizzly Bays, from the study Biophysical Controls on Sediment Erodibility in Shallow Estuarine Embayments.

The amphipod Ampelisca abdita and its characteristic tube mat in sediment, from the study Biophysical Controls on Sediment Erodibility in Shallow Estuarine Embayments.

Geologic model for abyssal seismoturbidite generation along the Cascadia Subduction Zone. (A) With each earthquake cycle, slope failures occur on the oversteepened limbs of thrust folds in the accretionary wedge, resulting in proximal MTDs and turbidity flows that spread out across the abyssal plain.

Enlargements of 1-m AUV bathymetry overlain on 30-m bathymetry grid for the study area along the Cascadia Subduction Zone. (A) The AUV bathymetry data reveal a 10m high failure scarp that extends for 4km along the seaward face of the frontal thrust fold. Secondary reverse faults observed in the chirp subbottom data are expressed at the seafloor with ~3m offsets.

USGS Coastal Storm Modeling System (CoSMoS) flood hazard maps for coastal adaptation planning across California are now available state-wide.

Map showing locations of cores coded by tidal regime and colored by region within the San Francisco Estuary, from the study Predicting Sediment Bulk Density for San Francisco Estuary.

Linear regression model showing percent fines in sediment samples collected in San Francisco Bay, from the study Predicting Sediment Bulk Density for San Francisco Estuary.

Collage showing different sediment core collection techniques used in the study Predicting Sediment Bulk Density for San Francisco Estuary.

Scientists bob coring at Ozette Lake in 2025.

Animated GIF showing an illustration of zooplankton layers moving up and down the water column over a mesophotic reef.

Time-series from the entire 132-d deployment. a Wind velocity (black vectors, left axis), and barometric pressure (orange line, right axis) measured by the Ponce buoy; the timing of two major tropical cyclones (TC), Irma and Maria, are labeled and correspond to the sharp dips in barometric pressure.

Maps of five study sites spread across the conterminous United States, Alaska, and the Island of Puerto Rico and descriptions of each site’s coastal setting. From the study Comparisons of Shoreline Positions from Satellite-Derived and Traditional Field- and Remote-Sensing Techniques.

Rice Corals (Montipora capitata), Kane'ohe Bay, O'ahu, Hawaii. Photographer: Peter Prokosch. Related to the study Impact of warming and suspended terrigenous sediment on the Hawaiian reef coral Montipora capitata.

Study area - Impact of warming and suspended terrigenous sediment on the Hawaiian reef coral Montipora capitata.

Photo showing personal watercraft equipped with survey equipment used during the mapping mission at the Elwha River mouth.

Photo showing collection of sediment samples used for grain size analysis at the Elwha River mouth.

Sea ice at Nuvuk, Alaska on June 22 2024, captured by a coastal observing video camera.