Sediments
Sediments
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Smith-McIntyre grab sampler
The Smith-McIntyre grab sampler, nicknamed the Smith-Mac, scoops up sediment from any water depth.
VibeCore DW
The VibeCore DW is a small, portable, 24v DC vibracorer
Rossfelder vibracorer
USGS uses the vibracorer is best in locations where the seafloor, lakebed, bay-floor, or river-bottom sediment is unconsolidated and waterlogged.
Chirp 512i
A sub-bottom profiler like the EdgeTech SB-512i Chirp emits acoustic pulses to produce an image of the layers of sediment below the seafloor.
Chirp 516
A sub-bottom profiler like the EdgeTech SB-516 Chirp emits acoustic pulses to produce an image of the layers of sediment below the seafloor.
Jumbo piston corer
Piston corers are generally used in areas with soft sediment, such as clay.
PCMSC MarFac Vessels
The USGS Pacific Coastal and Marine Science Center uses a wide variety of vessels, from kayaks to open-ocean ships, to conduct fieldwork. Most vessels are managed by our Marine Facility, or MarFac.
GOMEX box corer
PCMSC uses the GOMEX box corer for collecting soft, deep-water sediment samples.
California Seafloor Mapping Program data collection
Here we describe the data collection methods and techniques of the California Seaflor Mapping Program: mapping, video and photography ground-truthing, and seismic profiling data collection.
California Seafloor Mapping Program map-set production
USGS and the California Ocean Protection Council (COPC) are supporting development of peer-reviewed map sets for California’s mainland State Waters.
California State Waters Map Series: Map sheets and accompanying pamphlet
The map sheets display seafloor morphology and character, identify potential marine benthic habitats, and illustrate both the surficial seafloor geology and shallow (to about 100 m) subsurface geology. The total number of sheets varies by area.
Should Englebright Dam Be Removed?
Information about the USGS Pacific Coastal and Marine Science Center's study from 2001-2004, on Englebright Dam and the science behind its removal.