DSAS generates transects that are cast perpendicular to the reference baseline to intersect shorelines at a user-specified spacing alongshore.
Multimedia
The Coastal and Marine Hazards and Resources Program shares a wide range of resources to help explain and illustrate scientific concepts, our scientific activities, expertise, technology, tools, and other educational resources. Through newsletters, multimedia resources, special events, and other products, you can learn more about the many ways our science supports the Nation.
Images
DSAS Elements
DSAS generates transects that are cast perpendicular to the reference baseline to intersect shorelines at a user-specified spacing alongshore.
DSAS Landward vs Seaward
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
DSAS Software
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
DSAS step by step
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
DSAS Sample Data
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
DSAS v6.1 Infographic
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
The Digital Shoreline Analysis System (DSAS) version 6 is a standalone application that calculates shoreline or boundary change over time. The GIS of a user’s choice is used to prepare the data for DSAS. Like previous versions, DSAS v.6 enables a user to calculate rate-of-change statistics from multiple historical shoreline positions.
Videos
Ozette Lake Paleoseismology
Ozette Lake is located above the locked portion of the northern Cascadia megathrust and is relatively isolated from other active faults.
Ozette Lake is located above the locked portion of the northern Cascadia megathrust and is relatively isolated from other active faults.
Ozette Lake Paleoseismology (AD)
Ozette Lake is located above the locked portion of the northern Cascadia megathrust and is relatively isolated from other active faults.
Ozette Lake is located above the locked portion of the northern Cascadia megathrust and is relatively isolated from other active faults.
Hawai'i Abyssal Nodules Expedition (AD)
In Fall 2025 the Hawaiʻi Abyssal Nodules and Associated Ecosystems Expedition, led by USGS scientists, will investigate the geology, minerals, and environmental setting of the deep seabed offshore Moku o Keawe (Hawaiʻi Island) in the U.S. Exclusive Economic Zone. This work is part of ongoing collaborative efforts with BOEM and NOAA.
In Fall 2025 the Hawaiʻi Abyssal Nodules and Associated Ecosystems Expedition, led by USGS scientists, will investigate the geology, minerals, and environmental setting of the deep seabed offshore Moku o Keawe (Hawaiʻi Island) in the U.S. Exclusive Economic Zone. This work is part of ongoing collaborative efforts with BOEM and NOAA.
USGS Coastal and Marine Field Operations
To conduct the science needed to understand coastal and marine geohazards, support habitat and resource management, and monitor how these environments change over time, the USGS Coastal and Marine Hazards and Resources Program relies on engineering, mechanical, and electronics expertise for field operations along the coast, in the nearshore environment, and in the d
To conduct the science needed to understand coastal and marine geohazards, support habitat and resource management, and monitor how these environments change over time, the USGS Coastal and Marine Hazards and Resources Program relies on engineering, mechanical, and electronics expertise for field operations along the coast, in the nearshore environment, and in the d
USGS Coastal and Marine Field Operations (AD)
To conduct the science needed to understand coastal and marine geohazards, support habitat and resource management, and monitor how these environments change over time, the USGS Coastal and Marine Hazards and Resources Program relies on engineering, mechanical, and electronics expertise for field operations along the coast, in the nearshore environment, and in the d
To conduct the science needed to understand coastal and marine geohazards, support habitat and resource management, and monitor how these environments change over time, the USGS Coastal and Marine Hazards and Resources Program relies on engineering, mechanical, and electronics expertise for field operations along the coast, in the nearshore environment, and in the d
Characterizing organic carbon at Escanaba Trough (AD)
Characterizing organic carbon at Escanaba Trough (AD)The global ocean is a significant carbon sink, absorbing about a third of all atmospheric carbon dioxide (CO2) emissions (Gruber et al., 2019).
Characterizing organic carbon at Escanaba Trough (AD)
Characterizing organic carbon at Escanaba Trough (AD)The global ocean is a significant carbon sink, absorbing about a third of all atmospheric carbon dioxide (CO2) emissions (Gruber et al., 2019).
Webcams
Sand Key, Florida
Most recent time-averaged image from Sand Key, Florida. The images are used to examine a range of coastal processes including shoreline position, the presence of an offshore sandbar, and the extent of wave runup on the beach. Camera hosted by Dan's Island Condo.
Most recent time-averaged image from Sand Key, Florida. The images are used to examine a range of coastal processes including shoreline position, the presence of an offshore sandbar, and the extent of wave runup on the beach. Camera hosted by Dan's Island Condo.
Madeira Beach
A coastal camera located on Medeira Beach, Florida near the Shoreline Island Resort.
A coastal camera located on Medeira Beach, Florida near the Shoreline Island Resort.
Time-averaged image at Madeira Beach, Florida, Camera 2
Time-averaged image at Madeira Beach, Florida, Camera 2Time-averaged images, which represent the time-mean of all the images collected during a video, are used to identify areas where waves are breaking, which show up as bright white bands in the image.
Time-averaged image at Madeira Beach, Florida, Camera 2
Time-averaged image at Madeira Beach, Florida, Camera 2Time-averaged images, which represent the time-mean of all the images collected during a video, are used to identify areas where waves are breaking, which show up as bright white bands in the image.
Nuvuk video camera 2 dark image
Two video cameras are installed atop a utility pole near the northernmost point of land in the United States at Nuvuk (Point Barrow), Alaska. The cameras point northwest toward the Arctic Ocean and the boundary between the Chukchi and Beaufort Seas. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes.
Two video cameras are installed atop a utility pole near the northernmost point of land in the United States at Nuvuk (Point Barrow), Alaska. The cameras point northwest toward the Arctic Ocean and the boundary between the Chukchi and Beaufort Seas. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes.
Nuvuk video camera 1 dark image
Two video cameras are installed atop a utility pole near the northernmost point of land in the United States at Nuvuk (Point Barrow), Alaska. The cameras point northwest toward the Arctic Ocean and the boundary between the Chukchi and Beaufort Seas. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes.
Two video cameras are installed atop a utility pole near the northernmost point of land in the United States at Nuvuk (Point Barrow), Alaska. The cameras point northwest toward the Arctic Ocean and the boundary between the Chukchi and Beaufort Seas. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes.
Nuvuk video camera 2 bright image
Two video cameras are installed atop a utility pole near the northernmost point of land in the United States at Nuvuk (Point Barrow), Alaska. The cameras point northwest toward the Arctic Ocean and the boundary between the Chukchi and Beaufort Seas. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes.
Two video cameras are installed atop a utility pole near the northernmost point of land in the United States at Nuvuk (Point Barrow), Alaska. The cameras point northwest toward the Arctic Ocean and the boundary between the Chukchi and Beaufort Seas. Every half hour during daylight hours, the cameras collect snapshots and video for 10 minutes.