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Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...
Categories: Data;
Tags: Atlantic Ocean,
CMGP,
Cape Cod,
Cape Cod Bay,
Coastal and Marine Geology Program,
Eelgrass (Zostera marina) characteristics, sediment grain size distributions, sediment total organic carbon contents (TOC), carbon isotope ratios of sediment organic matter, and total carbon to total nitrogen ratios were measured at four lower intertidal sites in Bellingham Bay, Washington, July 2-5, 2019.
The urbanized area of downtown Menlo Park is subject to persistent flooding and sediment deposition by San Francisquito Creek in South San Francisco Bay. To mitigate these events, a suite of cores was collected in 2002 at the mouth of the creek to determine sediment depositional rates on the delta. One of those cores (721-1) was selected for microbiological (pollen, diatoms, and foraminifera) and geochemical analyses to reconstruct a depositional record over the past two millennia. This data release provides radiocarbon dates, census counts of benthic foraminifera, diatoms, and palynomorphs, and the measurement of anthropogenic metals and other elements in sediments from this core.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Habitat,
Hooks Point,
Invertebrates,
Eelgrass and substrate characteristics in Bellingham Bay, Washington, July 2019 and July-August 2020
Eelgrass (Zostera marina) characteristics, sediment grain size distributions, sediment total organic carbon contents (TOC), carbon isotope ratios of sediment organic matter, and total carbon to total nitrogen ratios were measured at four lower intertidal sites in Bellingham Bay, Washington, July 2-5, 2019, and three subtidal sites (grain-size and TOC only) on July 11, 2019.
The dataset documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the San Francisco Bay of California, USA in 2021 and 2022. The dataset includes nitrate, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition. Data-collection cruises were conducted under different environmental/flow conditions. Version history: On 3/15/24, the provisional data files hosted on this webpage were removed, and replaced with updated finalized files.
Categories: Data;
Tags: California,
San Francisco Bay,
San Pablo Bay,
Suisun Bay,
USGS Science Data Catalog (SDC),
Ecologically Sensitive Areas are shallow areas where submerged aquatic vegetation such as eel grass, is found. These areas provide shelter and feeding grounds for numerous fish and wildlife, including shellfish, crabs, fish and shorebirds.
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Citation,
Downloadable,
Map Service;
Tags: Barnegat Bay,
New Jersey,
bay,
water,
water quality
Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, sea floor photographs, and (or) video at 26 sites within the geophysical survey area. Sediment grab samples were collected at 19 of the 26 sampling sites and video and (or) photographic imagery of the sea floor were taken at all 26 sites. These survey data are used to characterize the sea floor by identifying sediment-texture, seabed morphology, and underlying geologic structure and stratigraphy. Data collected...
This data release presents part of historical fisheries-dependent data for Cisco (Coregonus artedi) in Green Bay of Lake Michigan and Saginaw Bay of Lake Huron collected by scientists from U.S. Geological Survey's Great Lakes Science Center, including three tables for monthly Cisco-catch and fishing-effort data and two tables for biological data of Cisco individuals. The monthly Cisco-catch and fishing-effort data tables are for small-mesh gill-net fisheries in Green Bay and Saginaw Bay (GBSB_GN.csv), pound-net fisheries in Green Bay and Saginaw Bay (GBSB_PD.csv), and shallow trap-net fishery in Saginaw Bay (SB_ST.csv) in the period 1929–1970. The biological data of Cisco individuals are from historical Saginaw...
This data release provides 210Pb and 137Cs measurements in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Hooks Point,
PCMSC,
Pacific Coastal and Marine Science Center,
Five-stage sequential extractions were performed on ultramafic soil from Bosque Susua and Guanica Dry Forest, stream sediment from Rios Loco and Yauco, and nearshore sediment from Guanica Bay in southwest Puerto Rico. Sequential extractions showed partitioning of geologically enriched metals and other elements among five phases: 1) adsorbed and calcium-bound, 2) iron-, manganese-oxyhydroxide-bound, 3) crystalline iron-oxide-bound, 4) sulfide-bound, and 5) residual. Total element contents are also reported. Soil and sediment were collected between June 19, 2017, and March 27, 2018.
Categories: Data;
Tags: Bay,
Bosque Estatal de Susua,
CMHRP,
Coastal and Marine Hazards and Resources Program,
Coastal plain,
A model application using the phase-averaged wave model SWAN (in Delft3D) was developed to simulate wind waves in South San Francisco Bay, California, between 30 May 2021 and 19 May 2022. This data release describes the development of the model application, provides input files, and includes output from the model simulations in netCDF format. Model Application The model application included two domains (Fig. 1) that were 1-way coupled. The coarse overall model domain (wsfb_g1.grd) included the coastal ocean across the entire San Francisco Sacramento/San Joaquin Bay-Delta region was forced along the oceanic boundaries with measured time-varying, spatially uniform wave parameters derived from the Coastal Data Information...
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Geomorphology,
PCMSC,
Pacific Coastal and Marine Science Center,
This data release provides census counts of diatoms in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Habitat,
Hooks Point,
Invertebrates,
This data release provides census counts of benthic foraminifera in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Habitat,
Hooks Point,
Invertebrates,
This data release provides the measurement of anthropogenic metals and other elements in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Habitat,
Hooks Point,
PCMSC,
This data release provides census counts of palynomorphs in sediments of a core obtained off San Francisquito Creek in South San Francisco Bay.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Habitat,
Hooks Point,
PCMSC,
Sediment grain-size distributions, stable carbon isotope ratios (d13C), total carbon to total nitrogen ratios (C:N), short-lived radionuclides (Beryllium-7, Cesium-137, and Lead-210), concentrations of 76 parent and alkylated polycyclic aromatic hydrocarbons (PAHs) and concentrations of 33 per- and polyfluoroalkyl substances (PFAS) were measured in the northern reach of San Francisco Bay (San Pablo and Suisun Bays), and in stream beds of the lower reaches of Napa River and Sonoma Creek, 5 months and 20 months after the 2017 Atlas and Nuns wildfires. New sites for sediment geochemistry analyses added 20 months post-fire included the lower reaches of Petaluma Creek and Suisun Slough, and in marsh sediment on Napa...
Categories: Data;
Tags: Carquinez Straight,
Environmental Health,
Geochemistry,
Grizzly Bay,
Napa River,
Sediment grain-size distributions and total organic carbon contents were measured at four intertidal sites and three subtidal sites along the urban waterfront (east shore) of Bellingham Bay, Washington, July 3-11, 2019 and June 6-August 31, 2020. Intertidal substrate was sampled in eelgrass beds, and subtidal substrate was sampled inside and outside of the deep edge of eelgrass beds.
Categories: Data;
Tags: Bay,
Bellingham Bay,
CMHRP,
Coastal and Marine Hazards and Resources Program,
Grain-size analysis,
This data release provides radiocarbon measurements from a core obtained off San Francisquito Creek in South San Francisco Bay.
Categories: Data;
Tags: CMHRP,
Coastal and Marine Hazards and Resources Program,
Hooks Point,
PCMSC,
Pacific Coastal and Marine Science Center,
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