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Pacific Coastal and Marine Science Center images.

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Overview map of the Mississippi River delta
Overview map of the Mississippi River delta
Overview map of the Mississippi River delta
Overview map of the Mississippi River delta

Overview map of the Mississippi River delta showing subaerial birdfoot morphology formed by distributaries.

Map of U.S. Extended Continental Shelf Regions.
Map of U.S. Extended Continental Shelf Regions
Map of U.S. Extended Continental Shelf Regions
Map of U.S. Extended Continental Shelf Regions

The United States has ECS in seven offshore areas: the Arctic, Atlantic (east coast), Bering Sea, Pacific (west coast), Mariana Islands, and two areas in the Gulf of America.  The U.S. ECS area is approximately one million square kilometers – an area about twice the size of California.

The United States has ECS in seven offshore areas: the Arctic, Atlantic (east coast), Bering Sea, Pacific (west coast), Mariana Islands, and two areas in the Gulf of America.  The U.S. ECS area is approximately one million square kilometers – an area about twice the size of California.

Underwater image of artificial reef structures developed by University of Miami researchers
Underwater image of artificial reef structures developed by University of Miami researchers
Underwater image of artificial reef structures developed by University of Miami researchers
Underwater image of artificial reef structures developed by University of Miami researchers

Underwater image of artificial reef structures developed by University of Miami researchers. The experimental structures were installed near Miami in an effort to help restore damaged coral reefs and protect coastal environments.

Photo of USGS Physical Scientist Josh Logan preparing geodetic survey control points
USGS Physical Scientist Josh Logan preparing geodetic survey control points
USGS Physical Scientist Josh Logan preparing geodetic survey control points
USGS Physical Scientist Josh Logan preparing geodetic survey control points

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
Bathymetric map of Jenkinson Lake, El Dorado County, California
Bathymetric map of Jenkinson Lake, El Dorado County, California
Bathymetric map of Jenkinson Lake, El Dorado County, California

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

Map of study area showing the Sur Pockmark Field offshore of central California
Map of study area showing the Sur Pockmark Field offshore of central California
Map of study area showing the Sur Pockmark Field offshore of central California
Map of study area showing the Sur Pockmark Field offshore of central California

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.

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.

Diagram showing patterns of erosion and deposition that produce seafloor pockmarks
Diagram showing patterns of erosion and deposition that produce seafloor pockmarks
Diagram showing patterns of erosion and deposition that produce seafloor pockmarks
Diagram showing patterns of erosion and deposition that produce seafloor pockmarks

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.

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.

Close-up imageof sediment core with tidal silt, tsunami sand, and marsh peat collected from the Salmon River estuary, Oregon
Detail of sediment core with tidal silt, tsunami sand, and marsh peat collected from the Salmon River estuary, Oregon.
Detail of 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
Map showing location of Salmon River estuary, Oregon
Map showing location of Salmon River estuary, Oregon
Map showing location of 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
View of Salmon River estuary, Oregon, from above
View of Salmon River estuary, Oregon, from above
View of Salmon River estuary, Oregon, from above

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

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