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Pacific Coastal and Marine Science Center images.

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Photo showing collection of sediment samples used for grain size analysis
Photo showing collection of sediment samples used for grain size analysis
Photo showing collection of sediment samples used for grain size analysis
Picture of surveyor equipped with survey equipment during mapping mission
Picture of surveyor equipped with survey equipment during mapping mission
Picture of surveyor equipped with survey equipment during mapping mission
Cover image for Hawai'i Abyssal Nodules Expedition video
Cover image for Hawai'i Abyssal Nodules Expedition video
Cover image for Hawai'i Abyssal Nodules Expedition video
Cover image for Hawai'i Abyssal Nodules Expedition video

In Fall 2025 the Hawaiʻi Abyssal Nodules and Associated Ecosystems Expedition, led by USGS scientists, will investigate the geology, minerals, and environmental setting of the deep seabed offshore Moku o Keawe (Hawaiʻi Island) in the U.S. Exclusive Economic Zone. This work is part of ongoing collaborative efforts with BOEM and NOAA.

In Fall 2025 the Hawaiʻi Abyssal Nodules and Associated Ecosystems Expedition, led by USGS scientists, will investigate the geology, minerals, and environmental setting of the deep seabed offshore Moku o Keawe (Hawaiʻi Island) in the U.S. Exclusive Economic Zone. This work is part of ongoing collaborative efforts with BOEM and NOAA.

Map showing locations of mapped groundwater seeps in western Big Island, Hawaii
Map showing locations of mapped groundwater seeps in western Big Island, Hawaii
Map showing locations of mapped groundwater seeps in western Big Island, Hawaii
Map showing locations of mapped groundwater seeps in western Big Island, Hawaii

Map showing locations of mapped groundwater seeps (white triangles), estimated fluxes of submarine groundwater discharge (blue triangles), groundwater temperature (orange arrow), and study sites (white squares) from the study Submarine groundwater discharge creates

Chart showing extreme 2-year water levels in SF Bay under four scenarios
Extreme 2-year water levels in SF Bay under baseline; restoration; urban; and combined scenarios at current versus 1.5 m SLR
Extreme 2-year water levels in SF Bay under baseline; restoration; urban; and combined scenarios at current versus 1.5 m SLR
Extreme 2-year water levels in SF Bay under baseline; restoration; urban; and combined scenarios at current versus 1.5 m SLR

Extreme 2-year water levels in SF Bay under baseline; restoration; urban; and combined scenarios at current versus 1.5 m SLR. From the study Mitigating Flood Risks in Urban Estuaries: Tidal Dynamics, Shoreline Hardening, Nature-Based Solutions, and Floodgates in San Francisco Bay.

Photos of the autonomous MAPCAT cataraft being tested on a lake
Photos of the autonomous MAPCAT cataraft being tested
Photos of the autonomous MAPCAT cataraft being tested
Photos of the autonomous MAPCAT cataraft being tested

The Autonomous MAPping CATaraft, or “Autonomous MAPCAT”, is a remotely controlled, 14 foot long by 7 foot wide boat, built from an inflatable pontoon, aluminum frame, whitewater cataraft.

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