Coastal/Marine Hazards and Resources
USGS Coastal/Marine Hazards and Resources Program scientists and staff study coastal and ocean resources and processes from shorelines and estuaries to the continental shelf and deep sea.
USGS study finds most have grown little in 3000 years
USGS scientists provide input for workshop on scientific drilling targets in the north Pacific Ocean
Pacific Coastal and Marine Science Center research geologist Danny Brothers attended the International Ocean Discovery Program (IODP) workshop on the “Scientific Exploration of the Arctic and North Pacific” September 25–27 in Mt. Hood, Oregon.
Geochemical sourcing of runoff from a young volcanic watershed to an impacted coral reef in Pelekane Bay, Hawaii
Runoff of sediment and other contaminants from developed watersheds threatens coastal ecosystems and services. A sediment geochemical sourcing study was undertaken on a sediment-impacted coral reef flat to identify terrestrial sediment sources and how these changed over time. Geochemical signatures were identified for watershed...Takesue, Renee K.; Storlazzi, Curt D.
Controls on submarine canyon head evolution: Monterey Canyon, offshore central California
The Monterey submarine canyon, incised across the continental shelf in Monterey Bay, California, provides a record of the link between onshore tectonism, fluvial transport, and deep-marine deposition. High-resolution seismic-reflection imaging in Monterey Bay reveals an extensive paleocanyon unit buried below the seafloor of the continental shelf...Maier, Katherine L.; Johnson, Samuel Y.; Hart, Patrick E.
Statistical approach to neural network imaging of karst systems in 3D seismic reflection data
The current lack of a robust, standardized technique for geophysical mapping of karst systems can be attributed to both the complexity of the environment and prior technological limitations. Abrupt lateral variations in physical properties that are inherent to karst systems generate significant geophysical noise, challenging conventional seismic...Ebuna, Daniel; Kluesner, Jared W.; Cunningham, Kevin J.; Edwards, Joel H.