Images

Bright image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the brightest pixels through 10 minutes of motion.

Image from video camera along Sunset State Beach in Watsonville, CA, looking northwest. Every half hour during daylight hours, the camera shoots video for 10 minutes.

Meagan Gonneea checks on instruments at a tidal creek in Great Pond, Falmouth, MA. Daily tides drive exchange between coastal wetlands and adjacent estuaries. Here we have instrumented a tidal channel to measure those fluxes over a tidal cycle. When the marsh floods, material is imported from the estuary.

Variance image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and shows areas of more movement as brighter colors.

Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

A well sensor continuously monitors salinity, temperature, and water level in a salt marsh, Cape Cod, MA

Variance image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and shows areas of more movement as brighter colors.

Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

Time-exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is time-averaged over 10 minutes of video.

Dark image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and tracks the darkest pixels through 10 minutes of motion.

Time exposure image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image represents a time-averaged image from 10 minutes of video.

Variance image of Isla Verde in San Juan, Puerto Rico, from a coastal video monitoring station. Image is compiled from 10 minutes of video and shows areas of more movement as brighter colors.

Gamma well detectors are used to determine the ages of sediments based on activities of natural and anthropogenic radionuclides

Dissolved inorganic carbon (DIC) in water samples is measured with a UIC, Inc. Coulometer

Shawn Harrison stands near video cameras on top of a building overlooking Isla Verde in San Juan, Puerto Rico. The cameras measure wave run-up and flooding as part of a study in response to Hurricane Irma and Hurricane Maria.

The urban reef at Isla Verde supports various species of protected corals, sea turtles, and crustaceans, as well as many Caribbean fish. It also protects the International Airport and numerous homes and resorts on the coast.

Aerial photograph looking southwest along Breton Island, Louisiana, taken July 2013

Wave-tide gauge, pictured here on a coral reef amongst sea rods, brain corals, and sea fans, installed off Isla Verde in San Juan, Puerto Rico.

The USGS collaborates with NASA, the University of Florida, National Park Service, and the U.S. Fish and Wildlife Service to assess coastal erosion hazards affecting space program infrastructure, habitat, and wildlife populations.

Endicott Island, and artificial island built in 1987 by Alaska Interstate Construction and is used by BP and Hilcorp Alaska for petroleum production.