AndreaBozzo/ceres-open-data-index huggingface dataset:
Sidescan-sonar Tracklines in the Geographic Coordinate System - Lake Mead 2000

A one-week geophysical survey was conducted in the Las Vegas Bay part of Lake Mead during June 1-6, 2000 to acoustically map the surficial sediments and shallow subsurface geology of this part of the lake. The study was done by researchers from the U.S. Geological Survey, Coastal and Marine Geology Program in Woods Hole, MA and the University of Nevada at Las Vegas. The objective was to map the distribution, volume and acoustic character of sediment that has accumulated on the floor of this part of the lake. The need for systematic mapping of this part of the lake's floor is because pollutants associated with surface and groundwater enter the lake through Las Vegas Wash at the head of Las Vegas Bay. Some of the pollutants transported to the lake by this runoff are deposited with the sediments on the lake floor. Understanding the distribution of sediments in the lake is needed to establish an effective monitoring program. The study built upon a geophysical survey conducted by the USGS and UNLV in 1999 that covered the deeper water parts of Las Vegas Bay and Boulder Basin. This year's survey focussed on the shallow water parts of the head of Las Vegas Bay with particular attention being directed at Las Vegas, Gypsum and Government Washes. Of these three Washes, the most effort was put into surveying Las Vegas Wash. This survey was conducted with an Edgetech DF-1000 sidescan sonar, a Knudsen high-resolution chirp subbottom profiling system, a Garmin fathometer, and P-Code GPS navigation. All data were logged digitally.

Tags: boulder-basin, cmgp, coastal-and-marine-geology-program, cruise-serial-number-00027, geophysics, geospatial-datasets, inlandwaters, lake-mead, las-vegas, las-vegas-bay, las-vegas-wash, location, navigation, navigational-data, nevada, north-america, ofr03-320, open-file-report, reservoir, sidescan-sonar, trackline, u-s-geological-survey, united-states, usgs, usgs-82bac8e7-16f0-4ebd-941b-7fca8a69df96
Organization: Department of the Interior
l483bs.m77t - MGD77 data file for Geophysical data from field activity L-4-83-BS in Bering Sea, Alaska from 09/16/1983 to 10/02/1983

Single-beam bathymetry, gravity, and magnetic data along with DGPS navigation data was collected as part of field activity L-4-83-BS in Bering Sea, Alaska from 09/16/1983 to 10/02/1983, http://walrus.wr.usgs.gov/infobank/l/l483bs/html/l-4-83-bs.meta.html
These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/l/l483bs/html/l-4-83-bs.bath.html, http://walrus.wr.usgs.gov/infobank/l/l483bs/html/l-4-83-bs.grav.html, and http://walrus.wr.usgs.gov/infobank/l/l483bs/html/l-4-83-bs.mag.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.

Tags: ak, alaska, bathymetry, bathymetry-and-elevation, bathymetry-measurement, bering-sea, bering-sea-alaska, distributions, geoscientificinformation, gravimeter-measurement, gravimetry, magnetic-anomalies, magnetic-field-observations, magnetometer-measurement, marine-geology, marine-geophysics, marine-gravity-field, marine-magnetic-field, oceans, seafloor-topography, single-beam-echo-sounder, usa, usgs-82acdc69-208d-4694-8191-9a6f72639d4d, water-depth
Organization: Department of the Interior
2017 USGS Lidar: Chenier Plain, LA Point Cloud files with Orthometric Vertical Datum North American Vertical Datum of 1988 (NAVD88) using GEOID12B

The Storm-Induced Coastal Change Hazards component of the National Assessment of Coastal Change Hazards project focuses on understanding the magnitude and variability of extreme storm impacts on sandy beaches. Lidar-derived beach morphologic features such as dune crest, toe and shoreline help define the vulnerability of the beach to storm impacts. This dataset defines the elevation and position of the seaward-most dune crest and toe and the mean high water shoreline derived from the 2001 Gulf Coast USGS/NASA ATM lidar survey. Beach width is included and is defined as the distance between the dune toe and shoreline along a cross-shore profile. The beach slope is calculated using this beach width and the elevation of the shoreline and dune toe.

Tags: cmgp, coastal-and-marine-geology-program, coastal-processes, elevation, environment, geoscientificinformation, gulf-of-mexico, hazards, lousiana, marine-geology, ocean-sciences, oceans, spcmsc, st-petersburg-coastal-and-marine-science-center, u-s-geological-survey, united-states-of-america, usgs, usgs-828222a5-9f25-4c4f-8d75-dfc38992d6cb
Organization: Department of the Interior
RES2DINV Format Continuous Resistivity Profiles Collected in the Neuse River, April 21, 2004

The Neuse River Estuary in North Carolina is a broad, V-shaped water body located on the southwestern end of Pamlico Sound. This estuary suffers from severe eutrophication for which several water quality models have recently been developed to aid in the management of nutrient loading to the estuary. In an effort to help constrain model estimates of the fraction of nutrients delivered by direct ground-water discharge, continuous resistivity profile (CRP) measurements were made during the spring of 2004 and 2005. CRP is used to measure electrical resistivity of sediments, a property that is sensitive to difference in salinity of submarine ground water. The 2004 and 2005 surveys used floating resistivity streamers of 100 m and 50 m respectively. The depth penetration of the streamers is approximately 20% of the streamer length which translates to approximately 20-25 m with the 100 m streamer and 12-14 m with the 50 m streamer. These data were processed using AGI's EarthImager 2D software. CRP data enables the mapping of the extent and depth of the fresher ground water within the estuary.

Tags: cmgp, coastal, coastal-and-marine-geology-program, continuous-resistivity-profiling, crp, ground-water, marine-resistivity, navigational-data, neuse-river, north-america, north-carolina, of-2005-1306, open-file-report, pamlico-sound, submarine-ground-water, u-s-geological-survey, united-states, usgs, usgs-825b6129-d49a-4c3c-bbe5-a3200e9e7707, woods-hole-science-center
Organization: Department of the Interior
Processed continuous resistivity profile data collected by the U.S. Geological Survey in Great South Bay on Long Island, New York, on Sept. 23, 2008

An investigation of submarine aquifers adjacent to the Fire Island National Seashore and Long Island, New York, was conducted to assess the importance of submarine groundwater discharge (SGD) as a potential nonpoint source of nitrogen delivery to Great South Bay. More than 200 kilometers (km) of continuous resistivity profiling (CRP) data were collected to image the fresh-saline groundwater interface in sediments beneath the bay. In addition, groundwater sampling was performed at sites (1) along the northern shore of Great South Bay, particularly in Patchogue Bay, that were representative of the developed Long Island shoreline, and (2) at sites on and adjacent to Fire Island, a 50-km-long barrier island on the southern side of Great South Bay. Other field activities included sediment coring, stationary electrical resistivity profiling, and surveys of in-situ pore water conductivity. The onshore and offshore shallow hydrostratigraphy of the Great South Bay shorelines, particularly the presence and nature of submarine confining units, appears to exert primary control on the dimensions and chemistry of the submarine groundwater flow and discharge zones. Sediment coring has shown that the confining units commonly consist of drowned and buried peat layers likely deposited in salt marshes. Based on CRP data, low-salinity groundwater extends from 10 to 100 meters (m) offshore along much of the northern and southern shores of Great South Bay, especially off the mouths of tidal creeks, and beneath shallow flats to the north of Fire Island adjacent to modern salt marshes. Human modifications of much of the shoreline and nearshore areas along the northern shore of the bay, including filling of salt marshes, construction of bulkheads and piers, and dredging of navigation channels, has substantially altered the natural hydrogeology of the bay's shorelines by truncating confining units and increasing recharge near the shore in filled areas. Better understanding of the nature of SGD along developed and undeveloped shorelines of embayments such as this could lead to improved models and mitigation strategies for nutrient overenrichment of estuaries. For more information on the surveys involved in this project, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2008-007-FA and https://cmgds.marine.usgs.gov/fan_info.php?fan=2008-037-FA.

Tags: agi-supersting, bathymetry, cmgp, coastal-and-marine-geology-program, continuous-resistivity-profiling, crp, elevation, field-activity-number-2008-037-fa, fire-island, geoscientificinformation, great-south-bay, groundwater, image-collections, info-bank-id-t-37-08-li, location, long-island, lowrance-gps, navigation, navigational-data, new-york, north-america, north-atlantic, oceans, processed-data, r-v-terrapin, submarine-groundwater, suffolk-county, u-s-geological-survey, united-states, usgs, usgs-8d04b1e7-8254-4aae-b134-8e0b02573145, whcmsc, woods-hole-coastal-and-marine-science-center
Organization: Department of the Interior
Regional potentiometric-surface contours by Bedinger and Harrill (2004), for the Death Valley regional ground-water flow system study, Nevada and California

The contours in this digital data set represent the regional potentiometric surface developed by Bedinger 
and Harrill (2004) to assess potential interbasin flow in the Death Valley regional ground-water flow system 
(DVRFS).  To obtain an adequate network of control points for that 100,000 square-kilometer region of 
southern Nevada and California, Bedinger and Harrill (2004) used regional potential altitudes derived 
from surface-water features, ground-water levels, topographic settings, deep wells, and  spring data. 
A set of general guidelines was developed to relate regional ground-water potential to these more readily 
observed surface and near-surface ground-water levels and to hydrologic characteristics of ground-water 
basins in the DVRFS (see "Larger Work Citation", Appendix 1). Bedinger and Harrill (2004) hand-contoured 
the regional potential data to produce the DVRFS potentiometric-surface map.

Tags: amargosa-desert, ash-meadows, california, california-valley, chicago-valley, china-ranch, clark-county, clayton-valley, coal-valley, death-valley, death-valley-regional-ground-water-flow-system, eastern-california, environment, esmeralda-county, eureka-valley, evapotranspiration, flow-model, franklin-lake, franklin-well, garden-valley, geoscientificinformation, ground-water, ground-water-discharge, ground-water-pumping, ground-water-recharge, hydraulic-conductivity, hydraulic-head, hydrogeologic-framework-model, hydrogeology, hydrology, inlandwaters, inyo-county, kern-county, las-vegas-valley, lateral-ground-water-flow, lateral-ground-water-model-boundary, lincoln-county, mesquite-valley, mineral-county, mono-county, net-infiltration, nevada, nevada-test-site, nye-county, oasis-valley, owlshead-mountains, pahranagat-range, pahrump-valley, panamint-range, penoyer-valley, railroad-valley, resting-spring, saline-valley, san-bernardino-county, sarcobatus-flat, sheep-range, shoshone, silurian-valley, southern-nevada, spring-flow, spring-mountains, steady-state-ground-water-model, stewart-valley, stone-cabin-valley, tecopa, transient-ground-water-model, usgs-8256b55f-c874-4640-9e83-d13a509968ad, water-level, water-well, yucca-mountain
Organization: Department of the Interior
SEABOSS Images from USGS Cruises 2010-033-FA and 2010-005-FA in JPEG Format

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Bathymetry, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities off southern New England, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. During July-August 2008 NOAA completed hydrographic survey H11922 west of Gay Head, Massachusetts, in Rhode Island Sound and during July and September 2010 bottom photographs and surficial sediment data were acquired as part of ground-truth reconnaissance surveys of this area. Interpretations were derived from the multibeam echo-sounder data and the ground-truth data used to verify them. For more information on the ground-truth surveys see https://cmgds.marine.usgs.gov/fan_info.php?fa=2010-033-FA and https://cmgds.marine.usgs.gov/fan_info.php?fa=2010-005-FA.

Tags: aquinnah, atlantic-ocean, bottom-photographs, cmgp, coastal-and-marine-geology-program, cuttyhunk-island, digital-photo, field-activity-number-2010-005-fa, field-activity-number-2010-033-fa, gay-head, geoscientificinformation, ground-truth, image-collections, info-bank-id-r-33-10-ri, info-bank-id-u-5-10-bz, jpeg, marthas-vineyard, massachusetts, nomans-land, north-america, oceans, ofr-2011-1004, open-file-report-2011-1004, r-v-rafael, rhode-island, rhode-island-sound, rv-connecticut, sea-floor, sea-floor-characteristics, seaboss, stations, u-s-geological-survey, underwater-photography, united-states, usgs, usgs-823a5990-4f0a-4e01-8b27-02c09726ab3c, whcmsc, woods-hole-coastal-and-marine-science-center
Organization: Department of the Interior
Airborne geophysical survey: South Washington Cascades, Washington

Aeromagnetic data were collected along flight lines by instruments in an
aircraft that recorded magnetic-field values and locations.  This dataset
presents latitude, longitude, altitude, and magnetic-field values.

Tags: aeromagnetic-data, aeromagnetic-surveying, airborne-surveys, cascade-range, f41027-hood-river, f41051-multnomah, f41065-wasco, f53011-clark, f53015-cowlitz, f53039-klickitat, f53041-lewis, f53059-skamania, field-monitoring-stations, geophysical-surveys, geophysics, geospatial-datasets, magnetic, magnetic-field-earth, magnetic-surveys, or, oregon, residual-magnetic-field, south-washington-cascades, total-field, united-states, usgs-822826f3-0da4-4132-a7ca-233d6fecede6, wa, washington
Organization: Department of the Interior
s196wo.m77t and s196wo.h77t: MGD77T data and header file for single-beam bathymetry for field activity S-1-96-WO in Cascadia, Washington from 04/14/1996 to 06/06/1996

Single-beam bathymetry data along with GPS navigation data was collected as part of the U.S. Geological Survey cruise S-1-96-WO. The cruise was conducted in Cascadia, Washington from April 14 to June 6, 1996. The chief scientists were Mike Fisher from the USGS Coastal and Marine Geology office in Menlo Park, CA and Ernest Flueh from GEOMAR in Germany.
The purpose of this cruise was for seismic studies of earthquake hazards posed by the subduction zone off Washington and Oregon.
These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/s/s196wo/html/s-1-96-wo.meta.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.

Tags: bathymetry, bathymetry-and-elevation, bathymetry-measurement, distributions, geoscientificinformation, juan-de-fuca-ridge, marine-geology, marine-geophysics, north-pacific-ocean, oceans, seafloor-topography, single-beam-bathymetry, single-beam-echo-sounder, state-of-oregon, state-of-washington, usgs-8225c046-3244-4764-874a-120b79fab851, water-depth
Organization: Department of the Interior
Video transects of the sea floor on Stellwagen Bank during U.S. Geological Survey field activity 2016-038-FA, aboard the R/V Auk, Sept. 16 and 19, 2016

This field activity is part of the effort to map geologic substrates of the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts. The overall goal is to develop high-resolution (1:25,000) interpretive maps, based on multibeam sonar data and seabed sampling, showing surficial geology and seabed sediment dynamics. This cruise was conducted in collaboration with the Stellwagen Bank National Marine Sanctuary, and the data collected will aid research on the ecology of fish and invertebrate species that inhabit the region. The Sanctuary's research vessel, R/V Auk, visited 41 locations on Stellwagen Bank at which a customized Van Veen grab sampler (SEABOSS) equipped with a video camera and a CTD was deployed in drift mode to collect sediment for grain-size analysis, video imagery of the seabed, and measurements of water column properties.

Tags: atlantic-ocean, cmhrp, coastal-and-marine-hazards-and-resources-program, location, marine-geology, massachusetts, massachusetts-bay, national-oceanic-and-atmospheric-administration, navigation, navigational-data, noaa, north-america, oceans, polyline-shapefile, sbnms, seabed-observation-and-sampling-system, seaboss, stations, stellwagen-bank, stellwagen-bank-national-marine-sanctuary, trackline, u-s-geological-survey, united-states, usgs, usgs-82146d5e-0e51-46ae-a636-8666aa49a0e1, video, video-observation, videography, videos, whcmsc, woods-hole-coastal-and-marine-science-center
Organization: Department of the Interior
Raw and modified raw continuous resistivity profiling data collected in the Indian River Bay, Delaware, on April 15, 2010, on U.S. Geological Survey Field Activity 2010-006-FA

A geophysical survey to delineate the fresh-saline groundwater interface and associated sub-bottom sedimentary structures beneath Indian River Bay, Delaware, was carried out in April 2010. This included surveying at higher spatial resolution in the vicinity of a study site at Holts Landing, where intensive onshore and offshore studies were subsequently completed. The total length of continuous resistivity profiling (CRP) survey lines was 145 kilometers (km), with 36 km of chirp seismic lines surveyed around the perimeter of the bay. Medium-resolution CRP surveying was performed using a 50-meter streamer in a bay-wide grid. Results of the surveying and data inversion showed the presence of many buried paleochannels beneath Indian River Bay that generally extended perpendicular from the shoreline in areas of modern tributaries, tidal creeks, and marshes. An especially wide and deep paleochannel system was imaged in the southeastern part of the bay near White Creek. Many paleochannels also had high-resistivity anomalies corresponding to low-salinity groundwater plumes associated with them, likely due to the presence of fine-grained estuarine mud and peats in the channel fills that act as submarine confining units. Where present, these units allow plumes of low-salinity groundwater that was recharged onshore to move beyond the shoreline, creating a complex fresh-saline groundwater interface in the subsurface. The properties of this interface are important considerations in construction of accurate coastal groundwater flow models. These models are required to help predict how nutrient-rich groundwater, recharged in agricultural watersheds such as this one, makes its way into coastal bays and impacts surface water quality and estuarine ecosystems. For more information on the survey conducted for this project, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2010-006-FA.

Tags: agi-supersting, bathymetry, cmgp, coastal-and-marine-geology-program, continuous-resistivity-profiling, crp, delaware, elevation, field-activity-number-2010-006-fa, geoscientificinformation, groundwater, holts-landing, indian-river-bay, indian-river-inlet, info-bank-id-k-6-10-dl, location, lowrance-gps, navigation, navigational-data, north-america, north-atlantic-ocean, oceans, open-file-report-2011-1039, piney-neck, r-v-knob, raw-data, rosedale-beach, submarine-groundwater, u-s-geological-survey, united-states, usgs, usgs-8201d174-26f1-4dc1-8daa-6f5ddae897da, water-temperature, whcmsc, woods-hole-coastal-and-marine-science-center
Organization: Department of the Interior
Surficial Sediment Data Collected During U.S. Geological Survey (USGS) Cruise R/V RAFAEL 08012 in the Vicinity of Edgartown Harbor, Offshore Martha's Vineyard, Massachusetts (RAFA08012_SEDDATA.SHP)

The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), is producing detailed geologic maps of the coastal sea floor. Imagery, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities along this part of the Massachusetts coastline, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretive data layers were derived from the combined single-beam and multibeam echo-sounder data and sidescan-sonar data collected in the vicinity of Edgartown Harbor, Massachusetts.  During August 2008 seismic-reflection profiles (Boomer and Chirp) were acquired, and during September 2008 bottom photographs and surficial sediment data were acquired as part of two ground-truth reconnaissance surveys.

Tags: atlantic-ocean, cape-poag, chappaquiddick-island, clay, cmgp, coastal-and-marine-geology-program, edgartown, edgartown-harbor, environment, esri-point-shapefile, field-activity-number-08012, geoscientificinformation, geospatial-datasets, grain-size-analysis, gravel, ground-truth, location, marine-geology, marthas-vineyard, massachusetts, nantucket-sound, navigational-data, north-america, northeast-united-states, oceans, ofr-2009-1001, open-file-report-2009-1001, rv-rafael, sand, sea-floor, sea-floor-characteristics, seaboss, sediment-data, sediment-samples, sediments, silt, stations, surficial-sediment-classification, u-s-geological-survey, united-states, usgs, usgs-81f3d33f-0c4d-4782-93b2-005b640a2f0d, van-veen-grab-sampler, whcmsc, woods-hole-coastal-and-marine-science-center
Organization: Department of the Interior
GrandBayModel_InputBathymetry: Modeling the Effects of Interior Headland Restoration on Estuarine Sediment Transport Processes in a Marine-Dominant Estuary: Delft3D Model Output

The effects of interior headland restoration on estuarine sediment transport processes are assessed through process-based numerical modeling. Three proposed interior headland restoration scenarios in the Grand Bay estuary (Mississippi/Alabama) are modeled using Delft3D (developed by Deltares) to understand impacts on suspended sediment concentrations, bed level morphology and sediment fluxes under present-day conditions and a sea level rise of 0.5 meters (m). Delft3D model output of suspended sediment concentrations (SSC), sediment fluxes, initial and final bed levels, and hydrodynamic data are included in this dataset. Model output from six scenarios (comprised of three restoration (R) alternatives and two sea level (SL) conditions) as forced by 18 climatological wind and wave forcing conditions are included in this data release (Jenkins and others, 2023a. For further information regarding model input generation, set up, and analysis, refer to Jenkins and others (2023b).

Tags: alabama, cmhrp, coastal-and-marine-hazards-and-resources-program, coastal-processes, digital-elevation-models, elevation, environment, estuarine-processes, geoscientificinformation, grand-bay, gulf-of-mexico, headlands, hydrodynamics, mississippi, modeling, oceans, remediation, restoration, sea-level-change, sediment-concentrations, sediment-flux, sediment-transport, spcmsc, st-petersburg-coastal-and-marine-science-center, structure, tides-oceanic, u-s-geological-survey, usgs, usgs-81ed6063-54e1-49ea-a434-7161c815ab80, waves
Organization: Department of the Interior