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Coastal and Marine Hazards and Resources Program images.

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Barnegat Bay residence times in days
Barnegat Bay residence times in days
Barnegat Bay residence times in days
Barnegat Bay residence times in days

Barnegat Bay residence times in days for (a) scenario T, only tidal forcing; (b) scenario TB, combined offshore hydrodynamic forcing; (c) scenario TBR, streamflow with combined hydrodynamic forcing; and (d) scenario TBRM, full suite with meteorological forcing

Barnegat Bay residence times in days for (a) scenario T, only tidal forcing; (b) scenario TB, combined offshore hydrodynamic forcing; (c) scenario TBR, streamflow with combined hydrodynamic forcing; and (d) scenario TBRM, full suite with meteorological forcing

Three people dressed in water safety gear work in and around a boat in shallow water preparing equipment that is in the boat.
Preparing geophysical equipment for deployment
Preparing geophysical equipment for deployment
Preparing geophysical equipment for deployment

USGS scientists Carol Johnson, Eric White and Tim McCobb prepare geophysical equipment for deployment in a coastal embayment April 9, 2015 in Falmouth, Massachusetts.

USGS scientists Carol Johnson, Eric White and Tim McCobb prepare geophysical equipment for deployment in a coastal embayment April 9, 2015 in Falmouth, Massachusetts.

Photograph of the seafloor.
Collecting sediment cores from the seafloor
Collecting sediment cores from the seafloor
Collecting sediment cores from the seafloor

Core collection with the Mini Multicorer (Mini Muc) viewed from a wide-angle camera attached to the system’s frame. The weight of the Mini-Muc drives four core barrels (only three are visible) into the sediment.

Core collection with the Mini Multicorer (Mini Muc) viewed from a wide-angle camera attached to the system’s frame. The weight of the Mini-Muc drives four core barrels (only three are visible) into the sediment.

Underwater, a man wearing a t-shirt, board shorts, mask, snorkel, fins, and gloves secures an instrument to a coral reef.
Free dive on coral reef off Kauai
Free dive on coral reef off Kauai
Free dive on coral reef off Kauai

USGS research geologist Curt Storlazzi free dives in order to set an instrument on the reef off Kauaʻi, Hawaiʻi in March 2015.

USGS research geologist Curt Storlazzi free dives in order to set an instrument on the reef off Kauaʻi, Hawaiʻi in March 2015.

Underwater, a man wearing a snorkel, fins, and mask swims down to a coral reef with an instrument tied to a tether.
Free-diving to collect data on corals
Free-diving to collect data on corals
Free-diving to collect data on corals

Research geologist Curt Storlazzi free-dives in order to set an instrument on the reef off Kauaʻi, Hawaiʻi in March of 2015.

A man stands on muddy ground carrying a piece of equipment in a forest.
Benjamin Norris in the Mekong Delta
Benjamin Norris in the Mekong Delta
Benjamin Norris in the Mekong Delta

Benjamin Norris in a mangrove forest on the southern edge of the island of Cù Lao Dung, situated in the lower Mekong Delta, Vietnam. Ben is carrying a Nortek Vectrino Profiler, a high-resolution velocity sensor, which is attached to a custom-made frame that can be driven by hand into the soft sediment of the mangrove forest to collect data.

Benjamin Norris in a mangrove forest on the southern edge of the island of Cù Lao Dung, situated in the lower Mekong Delta, Vietnam. Ben is carrying a Nortek Vectrino Profiler, a high-resolution velocity sensor, which is attached to a custom-made frame that can be driven by hand into the soft sediment of the mangrove forest to collect data.

A swampy area with lots of trees and other plants that are standing in water.
Mangrove forest at high tide
Mangrove forest at high tide
Mangrove forest at high tide

Mangrove forest at high tide, on the southern edge of the island of Cù Lao Dung and situated in the lower Mekong Delta, Vietnam.

Mangrove forest at high tide, on the southern edge of the island of Cù Lao Dung and situated in the lower Mekong Delta, Vietnam.

Image shows USGS scientist on a boat holding the anchor, preparing to drop it in the water.
Preparing to anchor a boat in Chincoteague Bay, Maryland
Preparing to anchor a boat in Chincoteague Bay, Maryland
River mixes with ocean water at beach, sand is piled high in foreground, with seagulls, and brightly colored apartments in back.
Capitola State Beach waterfront area
Capitola State Beach waterfront area
Capitola State Beach waterfront area

Knowing how much sand is removed and returned by big storm events can help show how waterfronts, like this one in Capitola, change with time.

Man walks along the sandy edge of a river with very colorfully painted apartments in background.
Capitola State Beach mapping
Capitola State Beach mapping
Capitola State Beach mapping

Reflectors are placed throughout a lidar scan area to help reference where the lidar points are in space. Andrew Stevens, USGS, surveys Capitola Beach, walks past a reflector mounted on a tall, yellow tripod in front of the light blue building.

Reflectors are placed throughout a lidar scan area to help reference where the lidar points are in space. Andrew Stevens, USGS, surveys Capitola Beach, walks past a reflector mounted on a tall, yellow tripod in front of the light blue building.

Man holds a piece of cylindrical steel attached to a handle and thick chain, on the stern of a moving boat.
Pipe dredge for collecting seabed sediment
Pipe dredge for collecting seabed sediment
Pipe dredge for collecting seabed sediment

USGS geologist Bruce Richmond prepares to deploy a pipe dredge that will be dragged along the seabed to collect sediment.

A man stands near a tripod with an instrument on it, he is wearing field gear like hip waders, steel toed boots, field vest.
Surveying position and elevation of instruments
Surveying position and elevation of instruments
Surveying position and elevation of instruments

Josh Logan (USGS PCMSC) surveys position and elevation of instrumentation to measure water level and suspended-sediment concentration in the marsh at China Camp State Park in Marin County CA, adjacent to San Pablo Bay (northern San Francisco Bay).

Josh Logan (USGS PCMSC) surveys position and elevation of instrumentation to measure water level and suspended-sediment concentration in the marsh at China Camp State Park in Marin County CA, adjacent to San Pablo Bay (northern San Francisco Bay).

Tim Elfers watches the incoming waves while conducting a bathymetric survey of the nearshore in Santa Cruz, California.
Conducting Bathymetric Surveys
Conducting Bathymetric Surveys
Conducting Bathymetric Surveys

USGS scientist Tim Elfers conducts a bathymetric (depth) survey from a personal watercraft with onboard GPS and echo sounder equipment, in Santa Cruz, California.

USGS scientist Tim Elfers conducts a bathymetric (depth) survey from a personal watercraft with onboard GPS and echo sounder equipment, in Santa Cruz, California.

map of iPlover study sites
iPlover Study Sites
iPlover Study Sites
iPlover Study Sites

Locations of the 97 beaches and barrier islands where our partners used the iPlover app to collect and record information on landcover characteristics at piping plover nesting locations during the breeding seasons of 2014-2016.

Locations of the 97 beaches and barrier islands where our partners used the iPlover app to collect and record information on landcover characteristics at piping plover nesting locations during the breeding seasons of 2014-2016.

peat auger core collected from the back-barrier marsh of Assateague Island
Peat auger core collected from the back-barrier marsh of Assateague Is
Peat auger core collected from the back-barrier marsh of Assateague Is
Peat auger core collected from the back-barrier marsh of Assateague Is

A peat auger core collected from the back-barrier marsh of Assateague Island, Maryland. An inorganic-rich layer found at the top of the core was delivered to the marsh via Hurricane Sandy. Visual contrast in sediment down-core reveal similar layers as that observed at the top of the core (i.e., Hurricane Sandy layer).

A peat auger core collected from the back-barrier marsh of Assateague Island, Maryland. An inorganic-rich layer found at the top of the core was delivered to the marsh via Hurricane Sandy. Visual contrast in sediment down-core reveal similar layers as that observed at the top of the core (i.e., Hurricane Sandy layer).

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