Images

Elkhorn Slough is a tidal river delta, salt marsh, and estuary in Monterey County, California. It is near the community of Moss Landing and is fed by Carneros Creek.

Natural Bridges State Beach, shown here in the middle of the photo, is nestled amongst coastal neighborhoods in the southwestern part of Santa Cruz, California. View is looking south. The offices of the USGS Pacific Coastal and Marine Science Center are just a few hundred feet north, outside the bottom portion of the photograph.

USGS and Washington State Department of Ecology scientists are geared up and ready to start a topographic survey at the mouth of the Elwha River, using handheld computers and backpack-mounted GPS equipment. From left to right are Owen Warrick (USGS Volunteer), Jon Warrick (USGS), Andy Ritchie (USGS), Heather Weiner (WA State Dept.

USGS scientists produced an animated GIF in coordination with the California Department of Transportation (Caltrans) re-opening of State Highway 1 through Big Sur on July 18, 2018. In 2017, the massive Mud Creek landslide buried a quarter-mile of the famous coastal route with rocks and dirt more than 65 feet deep.

Aerial view of Estero de San Antonio on Bodega Bay, near Dillon Beach, California.

USGS oceanographer Shawn Harrison poses in front of the USGS video camera installation atop the coastal bluff of Barter Island in northern Alaska.

USGS oceanographer Li Erikson speaks at a community outreach event on Barter Island, Alaska, to present results from earlier USGS studies and to discuss ongoing USGS research.

For a short study period, two video cameras overlooked the coast from atop the coastal bluff of Barter Island in northern Alaska. The purpose was to observe and quantify coastal processes such as wave run-up, development of rip channels, bluff erosion, and movement of sandbars and ice floes.

USGS scientist Cordell Johnson points to the Raspberry Shake, a sensitive instrument used to detect ground shaking. Johnson mounted the Raspberry Shake to an aluminum pole which he will then drive into the ground to bury the instrument beneath the tundra. This process will help isolate it from the wind.

This device, called a Raspberry Shake, is a sensitive instrument used to detect ground shaking. It is being carefully buried in this shallow hole in the tundra, to isolate it from wind.

Photograph of the actively eroding coastal permafrost bluff on Barter Island, located on the northern coast of Alaska.

Scientists Cordell Johnson, left, and Li Erikson stand atop the coastal bluff of Barter Island in northern Alaska, a coastal area that is experiencing very high rates of erosion.

View looking east of the actively eroding coastal permafrost bluff on Barter Island, which is located on the northern coast of Alaska.

USGS PCMSC vessel Jewell, shown on its towing trailer in the wareyard of MarFac in Santa Cruz, CA.

A winding strip of rainbow colors shows the bathymetry (depth) of the bed of the Mokelumne River just above its confluence with the San Joaquin in the Sacramento-San Joaquin River Delta east of San Francisco Bay.

After 100 years of restricted tidal activity to support agricultural use and salt harvesting, the tidal marshes around San Francisco Bay, like this one at Bair Island, are steadily rebuilding, returning to a stunning mosaic of marsh, mudflat, and channels.

Lower Tubbs Island is a tidal marsh near Midshipman Point in northern San Pablo Bay, California, and is part of the San Pablo Bay National Wildlife Refuge. Historically, Tubbs Island was used as a club for duck hunters, protected by levees that could be opened with the tides to release salt water into the sloughs. In 1969, it was purchased by the Natu

A pair of video cameras overlook the coast along a beach on Whidbey Island, Island County at the northern boundary of Puget Sound in western Washington. View looks west out into the Strait of Juan de Fuca.

Image from video camera overlooking the coast along a beach on Whidbey Island, WA. Every half hour during daylight hours, the camera shoots video for 10 minutes. This snapshot is the first frame in the 10-minute sequence.

Timex (time-exposure) image: a time-averaged image of all frames, smoothing away surface waves and determining the location of persistent wave-breaking (indicative of shallow sandbars).

Variance image: the standard deviation of pixel intensity throughout the video, and it is useful for determining how much variation or movement is occurring at a given location.