Physical Scientist
Email:
atan@usgs.gov
Office Phone:
831-460-7409
Fax:
831-427-4748
ORCID:
0000-0003-0725-1227
Location
400 Natural Bridges Drive
Santa Cruz
, CA
95060
US
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Sediment samples were collected from Los Padres reservoir in the Carmel River watershed, central California coast, between July 11 and 17, 2017, using a CME-45 barge-mounted drill rig, to characterize sedimentary properties in the reservoir deposits following the Soberanes Fire of 2016 and high river flows in winter 2017. Borehole samples were recovered using direct push coring with an Osterberg piston sampler operated by Taber Drilling Company of Sacramento, California, and overseen by AECOM, Inc. Sediment was recovered using a split-barrel sampler and a rotary drill bit was added to the sampler where needed to penetrate coarse sediment. Samples from four boreholes are described in this data release: three sampled...
Categories: Data;
Tags: CMHRP,
Carmel River,
Coastal and Marine Hazards and Resources Program,
Data Content Subjects,
Geomorphology, All tags...
Nonliving Resources,
PCMSC,
Pacific Coastal and Marine Science Center,
Sedimentology,
U.S. Geological Survey,
USGS,
coastal change hazards topics,
datasets,
earth sciences,
environment,
field inventory and monitoring,
geoscientificInformation,
grain-size analysis,
inlandWaters, Fewer tags
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These data present suspended particle size distributions collected by the U.S. Geological Survey (USGS) Pacific Coastal and Marine Science Center within two embayments of San Francisco Bay. Data were collected at one site in San Pablo Bay and one site in Grizzly Bay from January through February 2020 by deploying a Sequoia Scientific Laser In-situ Scattering and Transmissometry instrument (LISST 200x) from a small vessel near pre-established USGS instrument moorings. At both sites, data were collected on four dates at three depths, generally near the water surface, at mid depth, and near the sediment bed, for 1-3 minutes at each depth. LISST volume concentrations are most accurate when the optical percent transmission...
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Grizzly Bay,
PCMSC,
Pacific Coastal and Marine Science Center, All tags...
San Francisco Bay,
San Pablo Bay,
Shallow-water habitat,
State of California,
Suspended-sediment concentration,
Tidal shallows,
U.S. Geological Survey,
USGS,
Water-Quality Parameters,
marine geology,
marine water quality,
oceans,
sediment,
suspended material (water), Fewer tags
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Water samples were collected in San Pablo Bay and Grizzly Bay on five days from January through June 2020. The water samples were collected from a small vessel near pre-established USGS instrument moorings using a peristaltic pump or a Niskin bottle. Data are provided in a comma-delimited values spreadsheet.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Grizzly Bay,
PCMSC,
Pacific Coastal and Marine Science Center, All tags...
San Francisco Bay,
San Pablo Bay,
State of California,
U.S. Geological Survey,
USGS,
Water-Quality Parameters,
field sampling,
marine water quality,
oceans,
suspended material (water),
water sampling,
water sampling, Fewer tags
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This data release supersedes version 1.0, published in October 2021 at https://doi.org/10.5066/F74F1NW7. Versioning details are documented in the accompanying VersionHistory_P9DZ321R.txt file. This data release presents sediment grain-size data from samples collected from core S3-15G, a 4.72-m long gravity core collected at a depth of 3,491 meters on the western levy of the Monterey Fan on May 31, 1978 (USGS Field Activity S-3-78-SC).
Categories: Data;
Tags: Assessments,
CMHRP,
Coastal and Marine Hazards and Resources Program,
Loran-C navigation,
Monterey Bay, All tags...
Monterey Fan,
PCMSC,
Pacific Coastal and Marine Science Center,
Pacific Ocean,
Sedimentology,
State of California,
Substrate,
U.S. Geological Survey,
USGS,
core analysis,
drilling and coring,
environment,
grain-size analysis,
laboratory methods,
marine geology,
oceans,
sea-floor characteristics,
sediment analysis,
sedimentology, Fewer tags
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Bed sediment samples were collected in San Pablo Bay and Grizzly Bays on eight days from January through September 2020, to analyze for sediment properties including bulk density, particle size distribution, and percent organic carbon. Sediment samples were collected from a small vessel near pre-established USGS instrument moorings using a Gomex box corer that was subsampled with three push cores (37 mm in diameter) per Gomex core. Six subsamples were collected from the top 5 centimeters (cm) of each push core, a few push cores included the top 8 cm. The top two subsamples were each 0.5 cm thick, and all following subsamples were each 1 cm thick. Push core samples from the first, third, and fifth centimeter depth...
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Grizzly Bay,
PCMSC,
Pacific Coastal and Marine Science Center, All tags...
San Francisco Bay,
San Pablo Bay,
Sediment,
State of California,
Substrate,
U.S. Geological Survey,
USGS,
bulk density,
carbon,
dissolved organic compounds,
grab sampling,
grain-size analysis,
oceans,
push coring,
sea-floor characteristics,
sediment transport,
unconsolidated deposits, Fewer tags
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