Images

Grain density results obtained using a pycnometer inform other geotechnical testing, such as the consolidation results from the laboratory’s oedometers.

 The USGS Gas Hydrates Project develops and tests new tools to address the critical knowledge gaps identified as scientists analyze hydrate-bearing pressure cores recovered during field programs. HyPrCal Laboratory analysis using Pressure Core Characterization Tools.

Dune restoration efforts in Isabela, Puerto Rico, using wooden planks to promote sand accumulation.

Wooden boardwalk built to protect fragile dunes from pedestrians in Isabela, Puerto Rico.

Coral reef in La Parguera, Lajas Puerto Rico shows various types and conditions of corals, including sea fan corals (Gorgonia) in the center.

Coral reef in La Parguera, Lajas Puerto Rico shows a sea fan coral (Gorgonia) in the center, surrounded other corals and fishes.

Mangroves grow along the coast in La Parguera, Lajas, Puerto Rico. Mangroves help protect the coast during storms.

This image from a video camera pointed at the coast tracks the brightest pixels in the camera view over 10 minutes of video. The resulting image is useful for identifying features such as the position of maximum wave run-up on the beach, the position of all breaking waves, and sea-state.

Two video cameras are temporarily mounted on a dune at Pea Island National Wildlife Refuge on the Outer Banks of North Carolina. The cameras are imaging the southern DUNEX experiment site and are designed to have a stereo view of the beach and potential overwash path until late October. Instruments from the U.S.

Sophie Kuhl, Simone Gibson, Meagan Eagle, and Lindsey Smith in a coastal wetland, Mashpee, Massachusetts. Photo credit Jen O'Keefe Suttles (USG

Time-lapse of USGS researchers raising a mechanical mast with a high-resolution camera mounted on top, which was deployed atop a dune in the U.S.

Two high-resolution, digital cameras were mounted on towers overlooking the beach, dunes, and instrument arrays in the Outer Banks of North Carolina on September 18, 2021, as part of the DUring Nea

Michael Itzkin at the DUNEX field location on Pea Island, North Carolina. The instruments next to Michael include lidars, pressure sensors, and sonars to measure morphologic change, hydrodynamics, and sediment transport.

Researchers from the USGS and North Carolina Universites set up their equipment on installed poles stretching from the dune to the surf zone.

To install instruments offshore professional divers were hired to work alongside USGS personnel. Here, long segments of pipe are jetted into the seafloor to which instruments will be attached to measure offshore oceanographic conditions.

USGS personnel install signs on the beach warning and informing beach goers of the DUNEX experiment

USGS researcher Jenna Brown takes a measurement with a real time kinematic GPS receiver, this will give her an accurate position and height of the aluminum pole beneath it, which will have mutliple instruments attached to it to measure water flow and elevation changes.

An alternative to uncrewed aerial systems (UAS; commonly known as 'drones'), U.S. Geological Survey (USGS) scientists use helikites equipped with cameras to collect imagery of the coastline. The pictures collected by these helium-powered kite-balloons are used to create a 3D digital elevation map of the beach.

An alternative to uncrewed aerial systems (UAS; commonly known as 'drones'), U.S. Geological Survey (USGS) scientists use helikites equipped with cameras to collect imagery of the coastline. The pictures collected by these helium-powered kite-balloons are used to create a 3D digital elevation map of the beach.

Metal poles and equipment will installed on the beach and in the surf zone near the Army Corps of Engineers Field Research Facility pier near Kitty Hawk, North Carolina. The poles extend about 5 feet above the ground or seabed, to support instruments that continuously measure wave heights, water levels, and currents using acoustics. 

Coastal communities, especially those on barrier islands, are vulnerable to processes of coastal change. The DUring Nearshore Event eXperiment (DUNEX) project is a multi-agency, a