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Pacific Coastal and Marine Science Center images.
Petrographic (A, D) SEM (B, E) and STEM (C, F) images of bladed marcasite (A, B,C) and bladed pyrrhotite (D,E,F). The petrographic images are reflected light under plane polarization. The brassy minerals in D are isocubanite being replaced by chalcopyrite.
Petrographic (A, D) SEM (B, E) and STEM (C, F) images of bladed marcasite (A, B,C) and bladed pyrrhotite (D,E,F). The petrographic images are reflected light under plane polarization. The brassy minerals in D are isocubanite being replaced by chalcopyrite.
A stratigraphic scanning electron microscope tour showing the evolution of manganese-oxide mineralization of host sediment.
A stratigraphic scanning electron microscope tour showing the evolution of manganese-oxide mineralization of host sediment.
This field of polymetallic nodules was seen during Dive 04 of the 2026 American Samoa ROV + Mapping Exploration expedition at a depth of approximately 5,140 meters (3.2 miles). Sediment scoops and push core samples were collected here for scientific assessment.
This field of polymetallic nodules was seen during Dive 04 of the 2026 American Samoa ROV + Mapping Exploration expedition at a depth of approximately 5,140 meters (3.2 miles). Sediment scoops and push core samples were collected here for scientific assessment.
Designation of stream-contacting landslides in east San Francisco Bay. From the study Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California.
Designation of stream-contacting landslides in east San Francisco Bay. From the study Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California.
Chart showing study area at Columbia River mouth and Benson Beach. From the study Beach Nourishment Morphodynamics in a High-Energy U.S. West Coast Environment.
Chart showing study area at Columbia River mouth and Benson Beach. From the study Beach Nourishment Morphodynamics in a High-Energy U.S. West Coast Environment.
Conceptual diagram showing relative scales of sediment mass flux into San Francisco Bay during the 2017 water year. From the study Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California.
Conceptual diagram showing relative scales of sediment mass flux into San Francisco Bay during the 2017 water year. From the study Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California.
Examples of areas where shallow landslides were mapped as being in contact with stream channels, East Bay. Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California.
Examples of areas where shallow landslides were mapped as being in contact with stream channels, East Bay. Widespread Landslide Activity in an Extreme Wet Season and Implications for Regional Sediment Management, Eastern San Francisco Bay Area, California.
USGS engages with community representatives (city, tribe, Alaska Native Corporations), organizations that provide communities with technical support for planning and emergency preparedness, and State and Federal agency partners to ensure delivery of actionable products in western Alaska.
USGS engages with community representatives (city, tribe, Alaska Native Corporations), organizations that provide communities with technical support for planning and emergency preparedness, and State and Federal agency partners to ensure delivery of actionable products in western Alaska.
Decadal satellite-derived shorelines for Unalakleet, Alaska.
Decadal satellite-derived shorelines for Unalakleet, Alaska.
Still image aerial view of groin field in Santa Barbara.
Still image aerial view of groin field in Santa Barbara.
Conceptualization of observed longshore transport and shoreline patterns around groin fields at each study site in Southern California. Conceptualization of observed longshore transport and shoreline patterns around groin fields at each site.
Conceptualization of observed longshore transport and shoreline patterns around groin fields at each study site in Southern California. Conceptualization of observed longshore transport and shoreline patterns around groin fields at each site.
Animated GIF showing aerial view of groin field in Santa Barbara.
Animated GIF showing aerial view of groin field in Santa Barbara.
Study area and recent storm impacts in Santa Cruz County, California. From the study Morphodynamic controls on the performance of dune-based coastal flood mitigation under sea-level rise.
Study area and recent storm impacts in Santa Cruz County, California. From the study Morphodynamic controls on the performance of dune-based coastal flood mitigation under sea-level rise.
Spatial distribution of post-storm bed-level differences between simulations with and without dune-based adaptation at Santa Cruz Beach (a, b) and Capitola Beach (c, d) for return-period 5-year and return-period 50-year storm events under present-day (2025) conditions.
Spatial distribution of post-storm bed-level differences between simulations with and without dune-based adaptation at Santa Cruz Beach (a, b) and Capitola Beach (c, d) for return-period 5-year and return-period 50-year storm events under present-day (2025) conditions.
Kotzebue flood exposure map showing potential reach of floodwaters and the associated risk to structures,
Kotzebue flood exposure map showing potential reach of floodwaters and the associated risk to structures,
Animated GIF showing overwash of seawall at Teller, Alaska in an October 2025 storm.
Animated GIF showing overwash of seawall at Teller, Alaska in an October 2025 storm.
Map showing modeled velocity hazard for a 1-year period storm with 50cm of sea-level rise in Elim, Alaska.
Map showing modeled velocity hazard for a 1-year period storm with 50cm of sea-level rise in Elim, Alaska.
Map showing modeled velocity hazard for a 100-year period storm with 50cm of sea-level rise in Elim, Alaska.
Map showing modeled velocity hazard for a 100-year period storm with 50cm of sea-level rise in Elim, Alaska.
Flowchart showing how USGS data and tools enhance National Weather Service coastal hazards forecasts by transforming NOAA water level and wave predictions into detailed tables and maps of expected coastal flooding impacts for communities.
Flowchart showing how USGS data and tools enhance National Weather Service coastal hazards forecasts by transforming NOAA water level and wave predictions into detailed tables and maps of expected coastal flooding impacts for communities.
Map of the Escanaba Trough.
Maps of the study area and instrumentation in Faga'alu Bay. a) Location of American Samoa in the South Pacific region. b) Location of Faga'alu Bay on Tutuila Island, American Samoa. c) Faga'alu Bay, including locations of sediment pods and traps deployed at 9 locations. A time-lapse camera was installed at “Camera”.
Maps of the study area and instrumentation in Faga'alu Bay. a) Location of American Samoa in the South Pacific region. b) Location of Faga'alu Bay on Tutuila Island, American Samoa. c) Faga'alu Bay, including locations of sediment pods and traps deployed at 9 locations. A time-lapse camera was installed at “Camera”.