Images

Calcification monitoring station with a colony of the massive starlet coral, Siderastrea siderea, fastened in place.

Multicores collected from the northern Gulf of Mexico. These cores contain roughly 1 meter of sediment from the seafloor, and represent the past ~2000 years of deposition.

Low dunes near Cape Canaveral launch pads 39A and 39B often overwash during storm events, transporting sand landward. Critical infrastructure may be buried or flooded. In addition, significant landward transport of sand may lead to extensive shoreline erosion.

Fieldtrip participants at the former San Clemente Dam site.

Gerry Hatcher (left) and Shawn Harrison work on their video-camera station atop a hotel in Santa Cruz, California.

Views of Madeira Beach, Florida, produced from a 17-minute video shot on June 20, 2017. Left: Snapshot, or first frame of video. Right: Time-averaged image, sometimes called a “timex,” created by averaging the intensity of light recorded at each spot, or “pixel,” during the 17-minute video.

The 3DR Solo with GoPro Hero4 camera and gimbal. Coming to a survey area near you soon.

Shawn Harrison uses a GPS-equipped backpack to measure sand elevations during a post-storm survey of beaches in Santa Cruz, California. 

Scanning electron microscope (SEM) image of agglutinated planispiral marsh foraminifera Haplophragmoides wilberti collected from Grand Bay.

The 3DR Solo with GoPro Hero4 camera and gimbal. Coming to a survey area near you soon. Photo credit: Shawn Harrison, USGS. This photo was taken during USGS unmanned aerial systems (drone) pilot training. Two training sessions were held - one in February-March 2017 in Santa Cruz, California and the second in April 2017 in Gainesville, Florida.

We use a Inductively Coupled Plasma-Optical Emission Spectrometer (ICP-OES) to determine the Sr/Ca in coral aragonite samples in the laboratory at the USGS St. Petersburg Coastal and Marine Science Center.

The CMHRP is testing the calcification rates of different genetic strains of threatened Elkhorn coral (Acropora palmata) to advise local and Federal agencies engaged in coral reef restoration.

“Variance” images derived from the same videos used in the studies. Left, Madeira Beach; right, Cowells Beach. In a variance image, the more variation in light intensity at a given pixel, the brighter the value assigned to that pixel. Bright areas indicate many changes in light intensity, caused by a lot of movement.

Shawn Harrison uses his new skills to check out the surf at Santa Cruz, California.

Examples of sediment dynamics offshore of barrier islands include the development and erosion of shoals, tidal deltas, and sand ridges.

Scanning electron microscope (SEM) image of calcareous planispiral estuarine foraminifera Cribroelphidium poeyanum collected from Grand Bay estuary.

Orthomosaic images of Matanzas, Florida, from (a) before and (b) after Hurricane Matthew, and (c) a digital elevation model (DEM) showing the associated topographic change. Note, these results were produced by applying Structure-from-Motion (SfM) to NOAA oblique photographs, but similar results can be obtained using UAS aerial imagery.

A perspective model of the morphology and geologic framework near Petit Bois Island showing the relationships between seafloor features and the subsurface. The barrier islands rest on the island plaftorm. Petis Bois Pass and offshore shoals are clearly visible from the acoustic surveys. The bathymetry, sidescan sonar, and sediment

A reef core collected from Dry Tortugas National Park. Numbers indicate the depth of penetration into the reef in feet.

Banner with photo collage showing researchers in marshy and sandy scenes from the back barrier area of Fire Island, New York.

Views of Cowells Beach in Santa Cruz, California, from a 10-minute video shot on May 6, 2017. Snapshot (first frame in video) on left; time-averaged image on right.