Images

Colored, shaded-relief bathymetry of Trinidad Submarine Canyon northwest of Humboldt Bay in northern California. Area is in the vicinity of a potential offshore renewable energy development. See larger map for location.

Colored, shaded-relief bathymetry offshore central California. Data supported management of National Marine Sanctuaries and prospective renewable energy decisions. Black ovals are locations of AUV-based multibeam surveys. Close-up views of two AUV surveys are shown in Figures 4 and 5.

Colored shaded-relief bathymetry including submarine channels and pockmarks offshore Morro Bay, California. Map generated from AUV-based multibeam bathymetry data collected by MBARI both prior to and as a part of EXPRESS.

Colored shaded-relief bathymetry including pockmarks offshore Morro Bay, California. Map generated from AUV-based multibeam bathymetry data collected by MBARI.

Marine technician Dan Powers, from the Pacific Coastal and Marine Science Center's Marine Facility (PCMSC MarFac), wears all the required personal protective equipment: bib waders, personal floatation device, and mask.

Overview of Taan Fiord. Inset showing location of Taan Fiord, Alaska in Wrangell St. Elias National Park and Preserve. Taan Fiord is about 100 km from the nearest town, Yakutat, AK. Landsat 8 image of Taan Fiord acquired in 2016. Vegetation loss is clear near the water line.

A USGS scientist navigates a personal watercraft (PWC) slowly through Elkhorn Slough. The PWC is equipped with an echosounder and GPS, to record accurate depth and location. This mapping effort is part of recurring surveys in the Monterey Bay area.

A USGS scientist navigates a personal watercraft equipped with sonar and GPS to collect depth information (bathymetry) of the nearshore. This mapping effort is part of recurring surveys in the Monterey Bay area.

A USGS scientist walks along Santa Cruz Main Beach at the edge of the San Lorenzo River in Santa Cruz, California, wearing a backpack with GPS equipment. She is collecting elevation data that will be used to create a topographic map of the beach. This mapping effort is part of recurring surveys in the Monterey Bay area.

Field equipment used by USGS Pacific Coastal and Marine Science Center scientists for bathymetric and topographic surveys in the Sacramento-San Joaquin Delta, California

Thermal infrared image of two USGS researchers standing on the coastline and looking out (up on the image) over a coastal groundwater plume that is non-visible to the naked eye but can be observed in this thermal image due to the temperature differences between the cooler (blue) groundwater and warmer (pink) ocean water over the coral reefs.

Aerial image of Searsville Dam and Lake near Stanford, California, taken during coring operations in February 2020.

The SQUID-5, or a Structure-from-Motion (SfM) Quantitative Underwater Imaging Device with 5 cameras is a towed surface vehicle with an onboard Global Navigation Satellite System (GNSS) and 5 downward-looking cameras with overlapping views of the seafloor.

A group of participants at the Coastal Change Hazards State of Our Nation’s Coast stakeholder engagement workshop at the Waquoit Bay National Estuarine Reserve in Falmouth, MA. Here participants are pictured writing the names of tools they use on sticky notes.

Participants of the Coastal Change Hazards State of Our Nation’s Coast stakeholder engagement workshop at the Waquoit Bay National Estuarine Reserve in Falmouth, MA. Participants are pictured here talking in small groups.

USGS marine engineering technician Dan Powers from the USGS Pacific Coastal and Marine Science Center retrieves the GOMEX box corer from Bellingham Bay, Washington.

Porites and Acropora coral species in reef flat pools in the National Park of American Samoa on Ofu, Manuʻa Islands Group, American Samoa.

The GOMEX box corer is constructed of stainless steel and is used to sample soft sediments at the bottom of lakes, bays, and the ocean. The GOMEX box coring sampler is so-named because it is popular for sampling work in the Gulf of Mexico.

PCMSC MarFac field specialists retrieve the GOMEX box corer.

USGS scientists install a thermal imaging system in the National Park of American Samoa off the south shore of Ofu, Manua. The system detects temperature variations, like a colder freshwater plume that emanates from the shore.

Dive operations with National Park Service and the National Park of American Samoa installing tide, wave, temperature, and salinity sensors on the fore reef in NPSA off the south shore of Ofu, Manuʻa.