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Coastal and Marine Hazards and Resources Program

Scientists and staff study coastal and ocean processes, from shorelines to the deep sea, to identify hazards and provide critical information on our nation's resources. This work supports preparedness, emergency response, and the protection of people and resources in coastal and ocean environments.

News

Explore Global Coastal Research Using the COAWST Applications Catalog

Explore Global Coastal Research Using the COAWST Applications Catalog

USGS Releases Expedition Report for Samoa Basin Box Coring Effort

USGS Releases Expedition Report for Samoa Basin Box Coring Effort

USGS Coastal Change Products Help the EPA Safeguard Long Island Sound Shorelines

USGS Coastal Change Products Help the EPA Safeguard Long Island Sound Shorelines

Publications

Improving offshore 3D splay fault geometries and slip histories using seismic data reprocessing and structural modeling Improving offshore 3D splay fault geometries and slip histories using seismic data reprocessing and structural modeling

The goal of this project as written in the CRESCENT seed grant proposal was as follows: 1) reprocess selected profiles along strike from 45° to 48°N from the CASIE21 crustal-scale seismic data to obtain higher-resolution and higher-quality imaging of the uppermost 1-2 km of the accretionary wedge; 2) convert high-resolution USGS sparker seismic data from the time to depth domain to...
Authors
Anna M. Ledeczi, Nathaniel C. Miller, Harold J. Tobin, Cailey B. Condit

Storm surge barriers reduce seaward sediment supply to lagoonal estuaries Storm surge barriers reduce seaward sediment supply to lagoonal estuaries

Numerical simulations with realistic forcing of fixed infrastructure for a proposed storm surge barrier for a lagoonal estuary, Jamaica Bay (New York, USA), are analyzed during typical forcing conditions to assess alterations to flow and sediment transport with the barrier open. Lagoonal estuaries are shallow and have modest watershed freshwater and sediment inputs, so sediment delivery...
Authors
David K. Ralston, Philip M. Orton, John C. Warner, Shima Kasaei

Acoustic measurements and modeling of sub-bottom layers on the summit of the Atlantis II Seamount Acoustic measurements and modeling of sub-bottom layers on the summit of the Atlantis II Seamount

Sub-bottom profiler images taken from the summit plateau of the Atlantis II Seamount reveal distinct seabed stratigraphy, including marine sediment, limestone, and basalt layers. Acoustic reflection data also show arrivals reflecting from this sub-bottom structure. A wavenumber integration model with elastic geoacoustic properties is able to reproduce the arrival pattern of seabed...
Authors
Tzu-Ting Chen, Matthew A. Milone, Jason Chaytor, James H. Miller, Gopu R. Potty, William S.. Hodgkiss, Ying-Tsong Lin

Science

COAWST: A Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System

Understanding the processes responsible for coastal change is important for managing both our natural and economic coastal resources. Storms are one of the primary driving forces causing coastal change from a coupling of wave- and wind-driven flows. To better understand storm impacts and their effects on our coastlines, there is an international need to better predict storm paths and intensities...
COAWST: A Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System

COAWST: A Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System

Understanding the processes responsible for coastal change is important for managing both our natural and economic coastal resources. Storms are one of the primary driving forces causing coastal change from a coupling of wave- and wind-driven flows. To better understand storm impacts and their effects on our coastlines, there is an international need to better predict storm paths and intensities...
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Coastal and Marine Science in Long Island Sound

Long Island Sound is a highly productive estuary and vital natural resource bordering New York and Connecticut. It’s essential for its massive economic impact, generating billions annually by supporting recreation, fisheries, and transportation, as well as its biodiversity, serving as a critical habitat for thousands of marine species. USGS research in Long Island Sound helps protect these...
Coastal and Marine Science in Long Island Sound

Coastal and Marine Science in Long Island Sound

Long Island Sound is a highly productive estuary and vital natural resource bordering New York and Connecticut. It’s essential for its massive economic impact, generating billions annually by supporting recreation, fisheries, and transportation, as well as its biodiversity, serving as a critical habitat for thousands of marine species. USGS research in Long Island Sound helps protect these...
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National Shoreline Change Data Publication Catalog

The U.S. Geological Survey (USGS) maintains shoreline positions for the United States from older sources, such as aerial photos and topographic surveys, and contemporary sources like digital elevation models (DEMs) and lidar elevation point cloud data. It's important to maintain, and make available, records of historical shoreline positions to allow monitoring of change over time, and to identify...
National Shoreline Change Data Publication Catalog

National Shoreline Change Data Publication Catalog

The U.S. Geological Survey (USGS) maintains shoreline positions for the United States from older sources, such as aerial photos and topographic surveys, and contemporary sources like digital elevation models (DEMs) and lidar elevation point cloud data. It's important to maintain, and make available, records of historical shoreline positions to allow monitoring of change over time, and to identify...
Learn More
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