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Pacific Coastal and Marine Science Center

PCMSC is one of three centers serving the mission of the USGS Coastal and Marine Hazards and Resources Program—the primary Federal marine geology and physical science research program responsible for the Nation’s entire coastal and marine landscape. 

News

Connecting Communities to Ocean Exploration: Outreach from the Aleutian Arc Expedition

Connecting Communities to Ocean Exploration: Outreach from the Aleutian Arc Expedition

Ecological Thresholds, Abiotic Stress, and Climate Change: A Conceptual Framework

Ecological Thresholds, Abiotic Stress, and Climate Change: A Conceptual Framework

Photo Roundup: April-May 2025

Photo Roundup: April-May 2025

Publications

Are equilibrium shoreline models just convolutions? Are equilibrium shoreline models just convolutions?

Yes. Equilibrium shoreline models, which simulate wave-driven cross-shore erosion and accretion, are mathematically equivalent to a discrete convolution (i.e., a weighted, moving average) of a time series of wave-forcing conditions with a parameterized memory-decay kernel function. The direct equivalence between equilibrium shoreline models and convolutions reveals key theoretical...
Authors
Sean Vitousek, Daniel Buscombe, Eduardo Gomez-de la Peña, Kit Calcraft, Mark Alan Lundine, Kristen D. Splinter, Giovanni Coco, Patrick L. Barnard

Waterline responses to climate forcing along the North American West Coast Waterline responses to climate forcing along the North American West Coast

Understanding waterline variability at seasonal to interannual timescales is crucial for predicting coastal responses to climate forcing. However, relationships between large-scale climate variability and coastal morphodynamics remain underexplored beyond intensively monitored sites. This study leverages a newly developed 25-year (1997–2022) satellite-derived waterline dataset along the...
Authors
Marcan Graffin, Rafael Almar, Erwin W.J. Bergsma, Julien Boucharel, Sean Vitousek, Mohsen Taherkhani, Peter Ruggiero

Marsh sediment in translation: A review of sediment transport across a natural tidal salt marsh in northern San Francisco Bay Marsh sediment in translation: A review of sediment transport across a natural tidal salt marsh in northern San Francisco Bay

Deposition of inorganic sediment is essential for the sustainability of tidal salt marshes. Understanding variability in sediment sources and the processes of sediment delivery to salt marshes are high priorities for decision-makers responsible for managing sediment and conserving and restoring marshes. Research on sediment transport to marshes is published in technical journals, but...
Authors
Madeline R. Foster-Martinez, Matthew C. Ferner, John C. Callaway, Brenda Goeden, Jessica R. Lacy

Science

Seafloor Benthic Mapping and Characterization: Enhancing our Understanding of Aleutian Islands’ Hazards, Potential Seabed Minerals and Deep Corals

Seafloor Benthic Mapping and Characterization: Enhancing our Understanding of Aleutian Islands’ Hazards, Potential Seabed Minerals and Deep Corals

A USGS-led expedition in the Aleutian Arc off Alaska will provide critical information on energy resources, underwater earthquakes and other hazards, seafloor habitats, and biological resources, including key fisheries, as well as potential seabed minerals.
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Coastal Wetland Vulnerability to Climate Change and Sea-Level Rise: Understanding Ecological Thresholds and Ecosystem Transformations

Coastal Wetland Vulnerability to Climate Change and Sea-Level Rise: Understanding Ecological Thresholds and Ecosystem Transformations

Eighteen USGS coastal scientists from all four coasts of the conterminous United States are working together to advance the understanding of climate change and sea-level rise impacts to coastal wetlands.
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Habitat Vulnerability to Climate Change: Identifying Climate Change Induced Mass Mortality Events Across Large Landscapes of the United States

USGS researchers will characterize extreme climatic events across U.S. following a review of case studies of mass mortality events associated with climate extremes including drought, precipitation, freeze, heat waves, and storm events.
Habitat Vulnerability to Climate Change: Identifying Climate Change Induced Mass Mortality Events Across Large Landscapes of the United States

Habitat Vulnerability to Climate Change: Identifying Climate Change Induced Mass Mortality Events Across Large Landscapes of the United States

USGS researchers will characterize extreme climatic events across U.S. following a review of case studies of mass mortality events associated with climate extremes including drought, precipitation, freeze, heat waves, and storm events.
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