Coastal and Marine Hazards and Resources Program

Multimedia

The Coastal and Marine Hazards and Resources Program shares a wide range of resources to help explain and illustrate scientific concepts, our scientific activities, expertise, technology, tools, and other educational resources. Through newsletters, multimedia resources, special events, and other products, you can learn more about the many ways our science supports the Nation.

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An instrument rests on the deck of a ship, its cables suspended above it, while a scientist looks on.
October 22, 2019

Chirp rests on the deck of R/V Bold Horizon

This instrument, the Edgetech SB-516 or "chirp", emits acoustic signals that penetrate the sediment on the seafloor. The reflected sound is recorded and is used to create a cross-section image, or profile, of the sub-bottom.

People stand on the deck of a ship while guiding a large seafloor coring device off the stern, mountains in background.
October 12, 2019

Rossfelder P-5 Vibracorer

USGS science crew from Pacific Coastal and Marine Science Center work together to get the vibracorer coring device in position to collect sediment core samples off San Francisco, California.

Photo of the stern of a ship on the water with equipment tied down to the deck and coastal cliffs in the background.
October 12, 2019

Vibracorer on deck

The Rossfelder P-5 vibracorer, with its polybuterate liner visible, is secured on the deck of the research vessel Bold Horizon, awaiting deployment off the coast of California just north of San Francisco. More liners are stored in a cage off to the side.

View from the stern of a ship with a large A-frame boom with pullies and ropes attached to a coring device sitting on deck.
October 11, 2019

Vibracorer on deck in San Francisco

The USGS uses the Rossfelder P-5 vibracorer to collect deep-water sediment samples from the seafloor. Here, they are heading out offshore of San Francisco with the Golden Gate Bridge in the background.

A knobby coral clings to two mangrove prop roots in cloudy water
October 6, 2019

Porites porites coral clings to mangrove prop roots

A Porites porites coral clings to mangrove prop roots in a mangrove-coral habitat in the Florida Keys. These mangrove-coral habitats may be climate refugia for corals and could be included in ecosystem management plans and considered for their applications in coral restoration, for example, as a source of adapted genetic resources, places to support growth and

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A group of people help guide a yellow instrument, suspended from a cabling system, off a boat and into the ocean.
October 2, 2019

Lowering Chirp from R/V Bold Horizon

The crew of research vessel Bold Horizon with USGS science crew prepare to launch the Chirp sub-bottom profiler off the west coast near northern California and southern Oregon.

Photo looks at the very end of a metal coring device with mud in it, sitting on the deck of a ship in its metal launch.
October 1, 2019

Jumbo piston corer with mud from the seafloor

After recovery, the jumbo piston corer sits on the deck of research vessel Bold Horizon in its launch and recovery system. This muddy collar is removed to reveal the removable length of the core, which sits within a stiff plastic tube inside the metal tube.

A marine technician works on a large metal apparatus on the deck of a ship with cables and a pully.
October 1, 2019

Preparing the jumbo piston corer

A USGS engineering technician prepares the jumbo piston corer for launching off research vessel Bold Horizon off the coast of California and Oregon. The corer will collect sediment samples from the seafloor. Scientists will examine the sediment to determine its age, character, and distribution. This area off the west coast of the U.S. is prone to hazardous events 

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Two-panel image. Top: scientists stand by a personal watercraft on beach. Bottom: woman pulls an instrument across the water.
September 30, 2019

Using unique methods to measure nearshore and coastal geology

USGS scientists use specialized equipment to measure sediment dynamics in nearshore and coastal systems. Access by boat is limited in these areas, so personal watercraft are equipped with GPS and echosounders to collect bathymetric data. Seismic sleds are pulled along transects from the beach across the water to measure changes in sediment type below the water.

View from above looking back at a coastal bluff where large sections have collapsed and crumbled onto the beach.
September 30, 2019

Oblique view of Barter Island bluffs

Example of a high-oblique photograph taken with an unmanned aerial system (UAS), or drone, of the coastal bluffs of Barter Island on North Slope of Alaska. The photographs from different time periods can be compared, using a technique called structure-from-motion photogrammetry, to measure changes in the coastal bluffs. This area of Alaska is experiencing very high rates

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View looking at a coastal bluff where a large chunk has collapsed onto the beach.
September 30, 2019

Low-oblique view of Barter Island bluffs

Example of a low-oblique photograph taken with an unmanned aerial system (UAS), or drone, of the coastal bluffs of Barter Island on North Slope of Alaska. The photographs from different time periods can be compared, using a technique called structure-from-motion photogrammetry, to measure changes in the coastal bluffs. This area of Alaska is experiencing very high rates of

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