AndreaBozzo/ceres-open-data-index huggingface dataset:
PNG format images of EdgeTech SB-512i chirp seismic-reflection data collected in May 2012 by the U.S. Geological Survey within the Norfolk Canyon, mid-Atlantic margin

A large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since the turn of the century. A major goal of these surveys is providing a continuous view of bathymetry and shallow stratigraphy at the shelf edge in order to assess levels of geological activity during the current sea level highstand.  In 2012, chirp seismic-reflection data was collected by the U.S. Geologial Survey aboard the motor vessel Tiki XIV near three United States mid-Atlantic margin submarine canyons. These data can be used to further our understanding of passive continental margin processes during the Holocene, as well as providing valuable information regarding potential submarine geohazards. For more information on the U.S. Geological Survey involvement in this effort, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-005-FA.

Tags: 512i, atlantic-ocean, baltimore-canyon-trough, chirp, cmgp, coastal-and-marine-geology-program, continental-margin, edgetech, field-activity-2012-005-fa, field-activity-number-12005, geohazards, geoscientificinformation, image, image-collections, m-v-tiki-14, m-v-tiki-xiv, marine-geology, marine-geophysics, maryland, mid-atlantic-margin, norfolk-canyon, north-america, oceans, png, sea-floor, seafloor, segy, seismic-profile, seismic-reflection, seismic-reflection-profile, sub-bottom-profiling, subbottom, submarine-canyon, subsurface, u-s-geological-survey, united-states, usgs, usgs-36294ee1-a33d-4dbb-9e2e-bf724a6aa677, usgs-cmg-infobank-id-t-05-12-mc, whcmsc, woods-hole-coastal-and-marine-science-center
Organization: Department of the Interior
10 meter bathymetric contours of the Gulf of the Farallones region (10mCONTOUR)

In 1989, the U.S. Geological Survey (USGS) began a major geologic and oceanographic investigation of the Gulf of the Farallones continental shelf system, designed to evaluate and monitor human impacts on the marine environment (Karl and others, 2002). The study region is located off the central California coast, adjacent to San Francisco Bay and encompasses the Gulf of the Farallones National Marine Sanctuary. Geologic mapping of this area included the use of various remote sensing and sampling techniques such as sub-bottom profiling, sidescan-sonar and bathymetric mapping, gravity core and grab sampling, and photography. These data were used to define the surficial sediment distribution, underlying structure and sea floor morphology of the study area.
The primary focus of this report is to present a georeferenced, digital sidescan-sonar mosaic of the study region. The sidescan-sonar data were acquired with the AMS-120 (120kHz) sidescan-sonar system during USGS cruise F9-89-NC. The dataset covers approximately 1000 km squared of the continental shelf between Point Reyes, California and Half Moon Bay, California, extending west to the continental shelf break near the Farallon Islands. The sidescan-sonar mosaic displays a heterogenous sea-floor environment, containing outcropping rock, ripples, dunes, lineations and depressions, as well as flat, featureless sea floor (Karl and others, 2002). These data, along with sub-bottom interpretation and ground truth data define the geologic framework of the region.  The sidescan-sonar mosaic can be used with supplemental remote sensing and sampling data as a base for future research, helping to define the local current regime and predominant sediment transport directions and forcing conditions within the Gulf of Farallones.

Tags: 10-meter, bathymetry, bodega-bay, california, cmgp, coastal-and-marine-geology-program, contouring, contours, elevation, farallon-islands, farallones, field-activity-identifier-f9-89-nc, field-activity-serial-number-89020, geographic-information-systems, geospatial-datasets, gis, gulf-of-farallones-national-marine-sanctuary, gulf-of-the-farallones, half-moon-bay, lakebed-characteristics, north-america, oceans, pacific-ocean, point-reyes, san-francisco, shapefile, u-s-central-pacific-coast, u-s-geological-survey, u-s-west-coast, united-states, usgs, usgs-3621426e-dec9-44c0-8f50-e516c6c777a1, vector, woods-hole-science-center
Organization: Department of the Interior
k191yb.m77t and k191yb.h77t: MGD77T data and header files for single-beam bathymetry data for field activity K-1-91-YB in Yakutat Bay, Alaska from 06/22/1991 to 06/28/1991

Single-beam bathymetry data along with radar and GPS navigation data was collected as part of the U.S. Geological Survey cruise K-1-91-YB. The cruise was conducted in Yakutat Bay, Alaska from June 22 to June 28, 1991. The chief scientists were Paul Carlson from the USGS Coastal and Marine Geology office in Menlo Park, CA, and Ross Powell from Northern Illinois University.
The overall purpose of this study is a continuation of previous studies of morainal bank and proximal environments of tidewater glaciers in Glacier Bay, Alaska. The geophysical source was a 7 kilohertz (kHz) Rayheon RTT 1000 system.
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/k/k191yb/html/k-1-91-yb.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, glacier-bay, gulf-of-alaska, marine-geology, marine-geophysics, oceans, seafloor-topography, single-beam-bathymetry, single-beam-echo-sounder, state-of-alaska, usgs-3610ae17-5ac4-4556-9a40-aa7d8dd26971, water-depth
Organization: Department of the Interior
1 Arc-second Digital Elevation Models (DEMs) - USGS National Map 3DEP Downloadable Data Collection

This is a tiled collection of the 3D Elevation Program (3DEP) and is 1 arc-second
(approximately 30 m) resolution. The elevations in this Digital Elevation Model (DEM)
represent the topographic bare-earth surface. The 3DEP data holdings serve as the
elevation layer of The National Map, and provide foundational elevation information for
earth science studies and mapping applications in the United States. Scientists and
resource managers use 3DEP data for hydrologic modeling, resource monitoring, mapping
and visualization, and many other applications. The seamless 1 arc-second DEM layers
are derived from diverse source data that are processed to a common coordinate system
and unit of vertical measure. These data are distributed in geographic coordinates in
units of decimal degrees, and in conformance with the North American Datum of 1983 (NAD
83). All elevation values are in meters and, over the continental United States, are
referenced to the North American Vertical Datum of 1988 (NAVD88). The seamless 1
arc-second DEM layer provides coverage of the conterminous United States, Hawaii, Puerto
Rico, other territorial islands, and much of Alaska and Canada. The seamless 1
arc-second DEM is available as pre-staged current and historical products tiled in GeoTIFF format. The seamless 1 arc-second DEM layer is updated continually as new data become available in the current folder. Previously created 1 degree blocks are retained in the historical folder with an appended date suffix (YYYYMMDD) when they were produced. 
Other 3DEP products are nationally seamless DEMs in resolutions of 1 and 1/3 arc-second. These seamless DEMs were referred to as the National Elevation Dataset (NED) from about 2000 through 2015 at which time they became the seamless DEM layers under the 3DEP program and the NED name and system were retired. Other 3DEP products include one-meter DEMs produced exclusively from high resolution light detection and ranging (lidar) source data and five-meter DEMs in Alaska as well as various source datasets including the lidar point cloud and interferometric synthetic aperture radar (Ifsar) digital surface models and intensity images. All 3DEP products are public domain.

Tags: 1-degree-dem, 3d-elevation-program, 3dep, bare-earth, cartography, dem, digital-elevation-model, digital-mapping, digital-terrain-model, elevation, geodata, geographic-information-system, gis, grid, high-resolution, hydro-flattened, ifsar, interferometric-synthetic-aperture-radar, lidar, light-detection-and-ranging, mapping, national-elevation-dataset, ned, raster, terrain-elevation, topographic-surface, topography, u-s-geological-survey, united-states, us, usgs, usgs-35f9c4d4-b113-4c8d-8691-47c428c29a5b
Organization: Department of the Interior
USGS National Geologic Map Database Collection

The National Geologic Map Database (NGMDB) is a Congressionally mandated national archive of geoscience maps, reports, and stratigraphic information. The Geologic Mapping Act of 1992 and its Reauthorizations calls for the U.S. Geological Survey and the Association of American State Geologists (AASG) to cooperatively build this national archive, according to technical and scientific standards whose development is coordinated by the NGMDB. The NGMDB consists of a comprehensive set of publication citations, stratigraphic nomenclature, downloadable content in raster and vector formats, unpublished source information, and guidance on standards development. The NGMDB contains information on more than 110,000 maps and related geoscience reports published from the early 1800s to the present day, by more than 630 agencies, universities, associations, and private companies.

Tags: aasg, aeromagnetics, association-of-american-state-geologists, bedrock-geology, coal, coastal-and-marine-geology, core-science-systems, css, earthquakes, environmental-hazards, environmental-resources, geochemistry, geochronology, geologic-map, geology, geophysics, geoscientificinformation, geothermal-resources, gis, gravity, hazards, image-service, landslides, mapview, metallic-resources, national-cooperative-geologic-mapping-program, national-geologic-map-database, national-geospatial-data-asset, ncgmp, ngda, ngda-geology-theme, ngdaid52, ngmdb, non-metallic-resources, north-america, oil-and-gas, paleontology, petroleum, radioactivity, resources, stratigraphic-nomenclature, stratigraphy, surficial-geology, u-s, u-s-geological-survey, united-states, us, usgs, usgs-366411b4-98bc-41f7-876b-778f91aff6b6, volcanoes, water-resources, web-mapping, wms
Organization: Department of the Interior
BITH2014_LittlePineIslandBayouCorridorUnit_EAARLB_BE_z15_n88g12A_mosaic_metadata: Lidar-Derived Bare-Earth Digital Elevation Model (DEM) Mosaic for EAARL-B Topography—Big Thicket National Preserve: Little Pine Island Bayou Corridor Unit, Texas, 2014

A bare-earth topography Digital Elevation Model (DEM) mosaic for the Little Pine Island Bayou Corridor Unit of Big Thicket National Preserve in Texas was produced from remotely sensed, geographically referenced elevation measurements collected on January 15, 21, 22, 26, and 30, 2014 by the U.S. Geological Survey, in cooperation with the National Park Service - Gulf Coast Network. Elevation measurements were collected over the area using the second-generation Experimental Advanced Airborne Research Lidar (EAARL-B), a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation, vegetation canopy, and coastal topography. The system uses high-frequency laser beams directed at the Earth's surface through an opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The plane travels over the target area at approximately 55 meters per second at an elevation of approximately 300 meters, resulting in a laser swath of approximately 240 meters with an average point density of 1.4 points per square meter. A peak sampling rate of 15-30 kilohertz results in an extremely dense spatial elevation dataset. More than 100 kilometers of coastline can be surveyed easily within a 3- to 4-hour mission. When resultant elevation maps for an area are analyzed, they provide a useful tool to make management decisions regarding land development.

Tags: airborne-lidar-processing-system, alps, altimetry, bathymetry-and-elevation, big-thicket-national-preserve, cessna-310, dem, digital-elevation-model, digital-elevation-models, distributions, doi-usgs-cmg-gt-coastal-and-marine-geology-u-s-geological-survey-u-s-department-of-interior, eaarl-b, elevation, experimental-advanced-airborne-research-lidar, hardin-county, jefferson-county, land-surface-gt-topography-gt-terrain-elevation, laser-altimetry, lidar, lidar-gt-light-detection-and-ranging, little-pine-island-bayou-corridor-unit, remote-sensing, texas, topographic-mapping, topography, usgs-35ea2611-7edb-4e79-a0d5-3e3368c6fb7a
Organization: Department of the Interior
Archive of Digital Boomer Seismic Reflection Data Collected During USGS Cruise 97CCT01 Offshore of Central South Carolina, June 1997

In June of 1997, the U.S. Geological Survey, in cooperation with Coastal Carolina University, conducted a geophysical survey of the shallow geologic framework of the continental shelf offshore of central South Carolina from the Isle of Palms to Bull Island. This report serves as an archive of unprocessed digital boomer seismic reflection data, trackline maps, navigation files, GIS information, observers' logbooks, Field Activity Collection System (FACS) logs, and formal FGDC metadata. Filtered and gained digital images of the seismic profiles are also provided.
The archived trace data are in standard Society of Exploration Geophysicists (SEG) SEG-Y format (Barry and others, 1975) and may be downloaded and processed with commercial or public domain software such as Seismic Unix (SU). Example SU processing scripts and USGS software for viewing the SEG-Y files (Zihlman, 1992) are also provided.
For more information on the seismic surveys see http://walrus.wr.usgs.gov/infobank/g/g197sr/html/g-1-97-sr.meta.html
These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean ( http://www.virtualocean.org/) earth science exploration and visualization applications.

Tags: 97cct01, atlantic-ocean, boomer, bulls-island, capers-island, coastal-change-and-transport, dewees-island, distributions, isle-of-palms, marine-geophysics, marine-seismic-reflection, seg-y, seismic-reflection, seismic-reflection-methods, south-carolina, sub-bottom-profiling, substrate, usgs-35e77942-6cd2-4e7b-9611-3b6290da2c9c
Organization: Department of the Interior
Digital geospatial datasets in support of hydrologic investigations of the Colorado Front Range Infrastructure Resources Project

The U.S. Geological Survey developed this dataset as part of the Colorado Front Range Infrastructure Resources 
Project (FRIRP).  One goal of the FRIRP was to provide information on the availability of those hydrogeologic 
resources that are either critical to maintaining infrastructure along the northern Front Range or that may become 
less available because of urban expansion in the northern Front Range.  This dataset extends from the 
Boulder-Jefferson County line on the south, to the middle of Larimer and Weld Counties on the North. On the west, 
this dataset is bounded by the approximate mountain front of the Front Range of the Rocky Mountains;  on the east, 
by an arbitrary north-south line extending through a point about 6.5 kilometers east of Greeley.  This digital geospatial 
dataset consists of digitized contours of unconsolidated-sediment thickness (depth to bedrock).

Tags: aquifer, bedrock, boulder, colorado, denver, environment, fort-collins, geology, geoscientificinformation, greeley, hydrology, inlandwaters, overburden, usgs-35d6d052-4558-4fdd-af2b-fdb99451521d
Organization: Department of the Interior
SANP1M.TIF - South Anacapa Passage sidescan sonar backscatter image in nearshore Benthic Habitat mapping Project S. California map Series. (UTM 10N, NAD83)

The sidescan sonar image of the nearshore seafloor (0 to 100 m water depths) of the southern Anacapa Passage area was mosaicked from data collected in 1999 and 2000.  A Klein 2000 sidescan system was used for geophysical surveying. A Triton Elics Isis brand side-scan data recording system was used on the cruise.  The 2000 survey was navigated with a Leica Differential Global Positioning System (DGPS) which provided a ship position with accuracy of 1-5 m in DGPS mode. At times during the cruise differential signal was interrupted. In non-differential mode, the receiver provided a position with 30-50 m accuracy. A KVH Industries Inc. azimuth digital gyro-compass provided ship headings with 0.5 degree accuracy. Navigation data were recorded using Yo-Nav (Gann, 1992). The sidescan fish was towed approximately 30 m above the seafloor. The distance of the fish behind the ship was not known during this survey and must be estimated when the data are processed in order to produce the sidescan image mosaics.  The resolution of the processed data mosaics is 0.2 m. The data are presented here at a resolution of 1 m. This is one of a collection of digital files of a geographic information system of spatially referenced data related to the USGS Coastal and Marine Geology Program Nearshore Benthic Habitat Mapping Project. The sidescan data were processed using USGS MIPS sonar processing software (Chavez, 1984).  See &lt;http://walrus.wr.usgs.gov/nearshorehab&gt; for more information about this data set.

Tags: anacapa-island, ca, california, channel-islands, channel-islands-national-marine-sanctuary, cmhrp, coastal-and-marine-hazards-and-resources-program, coastal-geology, cruise-identifier-m-1-00-sc, geology, geoscientificinformation, geospatial-datasets, geotiff-image, grey-scale-image, image-collections, image-mosaics, imagerybasemapsearthcover, isis, klein, marine-geology, marine-geophysics, mips, north-pacific-ocean, northern-pacific-ocean, oceans, pacific-coastal-and-marine-science-center, pcmsc, r-v-mcarthur, remote-sensing, remote-sensing-image, santa-barbara, santa-cruz-island, sea-floor-acoustic-reflectivity, sea-floor-characteristics, sidescan-sonar, south-anacapa-passage, southern-california, u-s-geological-survey, united-states, usa, usgs, usgs-35d4afcc-e434-4c48-b1d6-2e519404afa7, ventura, west-coast
Organization: Department of the Interior
Water column sample data from predefined locations of the West Florida Shelf: USGS Cruise 11CEV02

The United States Geological Survey (USGS) is conducting a study on the effects of climate change on ocean acidification within the Gulf of Mexico; dealing specifically with the effect of ocean acidification on marine organisms and habitats. To investigate this, the USGS participated in cruises in the West Florida Shelf and northern Gulf of Mexico regions aboard the R/V Weatherbird II, a ship of opportunity lead by Dr. Kendra Daly, of the University of South Florida (USF). This cruise occurred February 17-23, 2011, leaving from and returned to Saint Petersburg, Florida. The USGS collected data pertaining to pH, dissolved inorganic carbon (DIC), and total alkalinity in discrete samples. Seventy-one underway discrete samples were collected approximately hourly over a span of 1628 kilometer (km) track line, additionally 34 samples were taken at 10 stations. Flow-through conductivity-temperature-depth (CTD) data were collected, which includes temperature, salinity, and pH. Corroborating the USGS data are the vertical CTD profiles collected by USF, using the following sensors: CTD, oxygen, chlorophyll fluorescence, optical backscatter, and transmissometer. Additionally, discrete depth samples for nutrients, chlorophyll, and particulate organic carbon/nitrogen were collected.

Tags: assessments, bathypelagic, carbon-flux, chemical-analysis, chemical-oceanography, environmental-chemistry, epipelagic, florida, marine-chemistry, mesopelagic, ocean-acidification, ocean-chemistry, ocean-surface, pco2, ph, physical-chemical-features, salinity, temperature, total-carbon, united-states, usgs-35c58cdb-e2fa-4fdb-8c43-ffc531e78fdc, west-florida-shelf
Organization: Department of the Interior
LANDFIRE 2016 Remap Existing Vegetation Cover (EVC) Guam Northern Mariana Islands

LANDFIRE's (LF) 2016 Remap (Remap) Existing Vegetation Cover (EVC) represents the vertically projected percent cover of the live canopy for a 30m cell. EVC is produced separately for tree, shrub, and herbaceous lifeforms. Training data depicting percentages of canopy cover are obtained from plot-level ground-based visual assessments and lidar observations. These are combined with Landsat imagery (from multiple seasons), topographic, climate, and other geospatial data sets to inform models built independently for each lifeform. Tree, shrub, and herbaceous lifeforms each have a potential range from 10% to 100%. The three independent lifeform datasets are merged into a single product. The EVC product is then reconciled through QA/QC measures to ensure lifeform is synchronized with both Existing Vegetation Height (EVH) and Type (EVT) products. Disturbance events not visible in the source imagery are accounted for by incorporating LF Remap Annual Disturbance products. LF uses EVC as an input for LF Remap Fuel Vegetation Cover (FVC).

Tags: biota, commonwealth-of-the-northern-mariana-islands, evc, existing-vegetation-cover, fires, geographic-information-systems, geospatial-datasets, guam, hazard-preparedness, ia, image-collections, imagerybasemapsearthcover, insular-areas, landfire-2016-remap, lf-2016-remap, oconus, raster-digital-data, remote-sensing, u-s-forest-service-usfs, u-s-geological-survey-usgs, united-states, us, usgs-35c0408b-047d-4225-b2dd-826daa2a29c8
Organization: Department of the Interior
LANDFIRE 2016 Remap National Vegetation Classification (NVC) Guam Northern Mariana Islands

LANDFIRE's (LF) 2016 Remap (Remap) National Vegetation Classification (NVC) represents the current distribution of vegetation groups within the U.S. National Vegetation Classification System ([version 2.0] http://usnvc.org/). Groups within the NVC IAerarchy are defined as combinations of relatively narrow sets of diagnostic plant species, including dominants and co-dominants, broadly similar composition, and diagnostic growth forms. NVC groups are mapped using decision tree models informed by field reference data, Landsat imagery, elevation data, and biophysical gradient inputs. NVC models are developed separately for each lifeform, including sparse vegetation,  and for each Environmental Protection Agency (EPA) Level III Ecoregion (https://www.epa.gov/eco-research/ecoregions). Riparian, alpine, sparse and other site-specific EVTs are constrained by predetermined masks. Urban and developed areas are derived from the National Land Cover Database (NLCD), whereas agricultural lands originate from the Cropland Data Layer (CDL) and Common Land Unit (CLU) database. Developed ruderal classes are identified by combining wildland-urban-interface (WUI) data with population density information from the US Census Bureau. Annual Disturbance products are included to describe areas that have experienced landscape change within the previous 10-year period. NVC is reconciled through QA/QC measures to ensure lifeform is synchronized with both Existing Vegetation Cover (EVC) and Height (EVH) products.

Tags: biota, commonwealth-of-the-northern-mariana-islands, fires, geographic-information-systems, geospatial-datasets, guam, hazard-preparedness, ia, image-collections, imagerybasemapsearthcover, insular-areas, landfire-2016-remap, lf-2016-remap, nvc, oconus, raster-digital-data, remote-sensing, u-s-forest-service-usfs, u-s-geological-survey-usgs, u-s-national-vegetation-classification-nvc, united-states, us, usgs-35ba70da-5689-4413-b6b0-40fba00911fd
Organization: Department of the Interior