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Striking New Seafloor Imagery of the Queen Charlotte-Fairweather Fault in the Gulf of Alaska

Striking New Seafloor Imagery of the Queen Charlotte-Fairweather Fault in the Gulf of Alaska

In 2016 the USGS led two geophysical surveys of the Queen Charlotte-Fairweather fault off the coast of southeast Alaska, using multibeam sonar to map...

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Investigating the Offshore Queen Charlotte-Fairweather Fault System in Southeastern Alaska, and its Potential to Produce Earthquakes, Tsunamis, and Submarine Landslides

Investigating the Offshore Queen Charlotte-Fairweather Fault System in Southeastern Alaska, and its Potential to Produce Earthquakes, Tsunamis, and Submarine Landslides

Like the San Andreas fault, the Queen Charlotte-Fairweather fault is right-lateral: to an observer on one side of the fault, the block on the other...

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Sampling Methane Seeps and Plumes on the U.S. Atlantic Margin

Sampling Methane Seeps and Plumes on the U.S. Atlantic Margin

USGS scientists and partners completed a research cruise on the research vessel (R/V) Hugh R. Sharp to acquire sediment and water samples, heat-flow...

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Dive In! Explore Thousands of Coastal and Seafloor Images along U.S. Coasts

Dive In! Explore Thousands of Coastal and Seafloor Images along U.S. Coasts

Thousands of photographs and videos of the seafloor and coastline—most areas never seen before—are now easily accessible online.

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Exploring Undersea Terrain Off the Northern U.S. Atlantic Coast Via Telepresence-Enabled Research Cruise

Exploring Undersea Terrain Off the Northern U.S. Atlantic Coast Via Telepresence-Enabled Research Cruise

In summer 2013, U.S. Geological Survey (USGS) scientists worked with colleagues from the National Oceanic and Atmospheric Administration (NOAA) and...

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Deep-Sea Instrument Tripod Passes Test in Monterey Bay, California—Next Stop is South China Sea

Deep-Sea Instrument Tripod Passes Test in Monterey Bay, California—Next Stop is South China Sea

A deepwater tripod system designed by the U.S. Geological Survey (USGS) will be the first of its kind to be deployed on the bottom of the South China...

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High-Resolution Multibeam Mapping of Mid-Atlantic Canyons to Assess Tsunami Hazards

High-Resolution Multibeam Mapping of Mid-Atlantic Canyons to Assess Tsunami Hazards

Recent devastating tsunamis in Samoa (2009), Chile (2010), and Japan (2011) offer sober reminders of the importance of accurately identifying and...

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Long-Lived, Slow-Growing Corals in Deep Waters of the Gulf of Mexico

Long-Lived, Slow-Growing Corals in Deep Waters of the Gulf of Mexico

Deep-sea coral ecosystems are now widely recognized as biodiversity hotspots.

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Samoa Disaster Highlights Danger of Tsunamis Generated from Outer-Rise Earthquakes

Samoa Disaster Highlights Danger of Tsunamis Generated from Outer-Rise Earthquakes

Unlike typical tsunamigenic earthquakes that occur on the thrust fault that separates tectonic plates in a subduction zone (termed the interplate...

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Ground-Truthing Data for Mapping of Seafloor Habitat and Geology along the California Coast

Ground-Truthing Data for Mapping of Seafloor Habitat and Geology along the California Coast

The California Seafloor Mapping Program is a State and Federally funded program to create a series of geologic and seafloor-habitat basemaps for all...

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