Images

Marsh shoreline inundation during high tide at a marsh sampling site around Middle Bay in the Grand Bay National Estuarine Research Reserve, Mississippi.

The USGS uses observations and data collection in the back-barrier environment at Fire Island, NY to inform numerical models.

USGS monitors the growth rates of the threatened Elkhorn Coral (Acropora palmata) at Dry Tortugas National Park (pictured) and throughout the Florida Keys, U.S.A.

Joseph Terrano of the USGS St. Petersburg Coastal and Marine Science Center retrieves a sediment sample from under the marsh grass. Scientists installed several Net Sediment Tiles (NST) on the surface of the marsh to measure sediment deposition.

A rock breakwater and salt marsh planting act as the living shoreline structure along the Fog Point shoreline in Chesapeake Bay, Maryland.

Scanning Electron Microscope (SEM) images of fossilized diatom specimens (microfossils). Diatoms are microscopic phytoplankton (algae) that are found in aquatic environments all over the world. Plankton species have preferences for different water and environmental conditions, such as salt or fresh water, attaching to sand or vegetation, or river versus estuary.

Snapshot, or first frame of from a 17-minute video shot on June 20, 2017, in Madeira Beach, Florida.

Time-averaged image, or “timex,” created by averaging the intensity of light recorded at each spot, or “pixel,” during a 17-minute video taken at Madeira Beach, Florida, on June 20, 2017. Blurred white bands show where waves are breaking. Offshore band shows location of a sand bar.

“Variance” image produced from video shot at Madeira Beach, Florida, on June 20, 2017. The more the light intensity changes at a given spot, or “pixel,” during the video, the brighter the value assigned to that pixel. Motion tends to produce changes in light intensity. Note bright bands parallel to shore where waves were breaking.

Photograph taken June 7, 2016, one day after Tropical Storm Colin, on Sunset Beach in the town of St. Pete Beach, Florida. Storm waves eroded the beach and dune, producing a cliff-like feature called a beach scarp.

Photograph taken during Tropical Storm Colin, June 6, 2016, on Sunset Beach in the town of St. Pete Beach, Florida.

• Scenic photograph of Grand Bay estuary taken from a boat just before sunset following a day in the field.

Scientists from the USGS St Petersburg Coastal and Marine Science Center (SPCMSC) capture the smooth water of the tidal creek reflecting a pastel sky and soft clouds while heading out for field work at early dawn.

View of Grand Bay, Mississippi marsh shoreline in April 2017.

Scientists deploy a Chirp seismic instrument from the beach. Seismic data provide view of sub-seafloor geology, which records depositional and erosional events and reveals geologic controls on sediment supply.

Samples are recovered from the sediment trap once every 9-12 months. Cruises to recover and redeploy the mooring take place on the UNOLS vessel, R/V Pelican, operated by LUMCON, in Cocodrie, Louisianna.

A net sedimentation tile (NST) is used by scientists to measure surface sediment deposition in wetlands over short time scales. Scientists installed several NSTs on the surface of the marsh to measure sediment deposition. The samples are retrieved and measured in the lab to identify short-term sediment deposition rates on the marsh surface.

A healthy thicket of elkhorn coral, Acropora palmata in Buck Island Reef National Monument, St. Croix, U.S. Virgin Islands. This species is critical for shoreline protection because it is the only species that builds reef-crest habitat in the Caribbean region.

Location of geophysical and sediment core data collected between 2009 and 2013, and used in the Mississippi Coastal Improvement Project (MsCIP) project.

Video-camera station installed by Jenna Brown and Joe Long atop a hotel in Madeira Beach, Florida.

Participants at the September 2016 Argus Workshop at the U.S. Army Corps of Engineers Field Research Facility in Duck, North Carolina, including many of the scientists named in this article (labeled). Rob Holman (Oregon State University) took the photo with a drone.