AndreaBozzo/ceres-open-data-index huggingface dataset:
Profile and discharge data for five waterways in the Utqiagvik-Atqasuk-Wainwright region, Alaska, collected August 2022

Profile and discharge data for five waterways in the Utqiagvik-Atqasuk-Wainwright region, Alaska, collected August 2022, Raw Data File 2022-15, presents discharge measurements and riverbed profile data from five stream gage sites between Atqasuk, Wainwright, and UtqiaÄ¡vik. The five stream gages (22RPD001-Nigisaktuvik River; 22RPD002-Inaru River; 22RPD003-Kugrua River; 22RPD004-Kucheak Creek; 22RPD005-unnamed Inaru tributary) were installed near potential river crossings for the Arctic Strategic Transportation and Resource (ASTAR) project. The waterways were measured between August 8, 2022, and August 22, 2022 and are assumed to be in a low flow stage, as they are primarily supplied by snowmelt and rainwater run-off. The installed gaging equipment will help determine when true low flow occurs on these waterways. Site locations, stream profiles, and discharge measurements are provided in the accompanying tables. The data are available from the DGGS website: http://doi.org/10.14509/30915.

Tags: atqasuk, coastal and river, coastal plain, dggs, engineering, engineering geology, environment, environmental, geologic, geological process, geology, geomorphology, hydrology, inaru river, kucheak creek, kugrua river, nigisaktuvik river, north slope, north slope borough, stream flow, stream profiles, utqiagvik, water, water resources
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment G: Nunam Iqua to Chevak

Aerial photographs of the coastline from Nunam Iqua to Chevak were collected on September 1, 2015. The photographs were processed using Structure-from-Motion (SfM) photogrammetric techniques. Global Positioning System (GPS) checkpoints were collected via a Global Navigation Satellite System (GNSS) survey conducted between August 15 and September 14, 2015. For the purposes of open access to elevation and orthoimagery datasets in coastal regions of Alaska, this collection is being released as a Raw Data File with an open end-user license. Orthoimages contain 4-band, 8-bit, unsigned raster data (red/green/blue/no data; file format-GeoTIFF; source-Fairbanks Fodar) with 20 cm GSD. No-data values are found in band 4 or shown as transparent in red/green/blue images. The file employs Lempel-Ziv-Welch (LZW) compression. Light exposures in the orthoimages are a result of daily weather conditions, which ranged from low cloud cover, rain, and full sun.

Tags: chevak, coastal, coastal and river, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, marine geology, methods, nunam iqua, raster image, surficial
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery of Minnesota Drive, December 5, 2018

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced digital surface models (DSMs) and orthorectified aerial imagery (orthoimagery) over selected locations in the greater Anchorage area following the Mw 7.1 November 30, 2018, Anchorage earthquake. We selected areas of interest (AOIs) based on initial damage reports from the Alaska Department of Transportation & Public Facilities (DOT&PF) and the United States Geological Survey (USGS) in order to document earthquake effects. Aerial photographs collected December 5-6, 2018, were processed using Structure-from-Motion (SfM) photogrammetric techniques to create sub-meter DSMs and orthoimagery. This digital data set covers Minnesota Drive and was collected on December 5, 2018. These data document ground conditions immediately following the 2018 Mw 7.1 Anchorage earthquake. For the purposes of open access to elevation and orthoimagery data sets throughout Alaska, this collection is being released as a Raw Data File with an open end-user license. The data and the data acquisition report are available from the DGGS website: https://elevation.alaska.gov/, http://doi.org/10.14509/30278.

Tags: aerial photography, anchorage, digital surface model (dsm), earthquake related hazards, earthquake related slope failure, elevation, engineering, fracturing, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, orthoimagery, photogrammetry, raster image, structure from motion, surficial geology, topography
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Kipnuk, Alaska

The Division of Geological & Geophysical Surveys has analyzed long-term shoreline change at 48 Alaska communities. Shoreline datasets were compiled from previously published U.S. Geological Survey assessments and created from historical and recent aerial images by the Alaska Division of Geological & Geophysical Surveys. Shorelines were analyzed to calculate shoreline change rates every 25 meters along coastlines and tidally influenced riverbanks using the Digital Shoreline Analysis System (DSAS; Himmelstoss and others, 2018). The geodatabase for each community includes shoreline positions, the alongshore baseline used to cast transects, and transects that include shoreline change rates and statistics. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30552).

Tags: aerial, aerial photography, alaska, coastal, dggs, emergency preparedness, engineering, environmental, erosion, flood, floodplain, geology, hazards, inundation, kipnuk, marine geology, outreach, sea level changes, shelf, shoreface, storm surge, surface, tides, topography, water
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment N: Bethel to Eek

Aerial photographs of the coastline from Bethel to Eek were collected on May 1, 2016 - May 5, 2016. The photographs were processed using Structure-from-Motion (SfM) photogrammetric techniques. Global Positioning System (GPS) checkpoints were collected via a Global Navigation Satellite System (GNSS) survey conducted between August 15 and September 14, 2015. For the purposes of open access to elevation and orthoimagery datasets in coastal regions of Alaska, this collection is being released as a Raw Data File with an open end-user license. This file is a single-band, 32-bit float DSM (digital surface model) which represents surface elevations of buildings, vegetation, and uncovered ground surfaces in meters with 20 cm GSD. The No Data value is set to -32767. The file employs LZW compression.

Tags: bethel, coastal, coastal and river, eek, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, marine geology, methods, raster image, surficial
Organization: State of Alaska
Geochemical reanalysis of historical U.S. Geological Survey sediment samples from the Zane Hills, Hughes and Shungnak quadrangles, Alaska

The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly identify areas in Alaska with SCM potential. For this report, DGGS funded reanalysis of 1,682 historical USGS sediment samples from the statewide Alaska Geochemical Database Version 2.0 (AGDB2; Granitto and others, 2013). Samples were chosen from an area covering Zane Hills, Hughes and Shungnak quadrangles, Alaska. USGS was responsible for sample retrieval from the Denver warehouse through the final quality assurance/quality control (QA/QC) of the geochemical analyses obtained through the USGS contract lab. The new geochemical data are published in this report as a coauthored DGGS report, and will be incorporated into the statewide geochemical databases of both agencies.

Tags: alaska, analyses, analyses and sampling, anchorage quadrangle, chemistry, critical minerals, economic geology, economic study, geochemical data, geochemical surveys, geochemistry, geology, hughes quadrangle, mineral assessment, mineral deposit, mineral development, mineral localities, mineral prospect, mineral resources, minerals, non-metals, platinum group elements, precious metals, rare earth elements, ree, resource assessment, resource information, resources, sample location, sediment, shungnak quadrangle, state of, strategic and critical minerals assessment project, strategic minerals, stream sediments, trace elements, trace geochemical, trace metals
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Sagavanirktok Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (Light Detection and Ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. The dataset represents ground-classified laser returns from the lidar survey and their associated geospatial coordinates.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar las file format, point cloud data, proposed natural gas pipeline, remote sensing, sagavanirktok quadrangle, state of, trans-alaska pipeline
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment H: Chevak to Newtok

Aerial photographs of the coastline from Chevak to Newtok were collected on May 6, 2016. The photographs were processed using Structure-from-Motion (SfM) photogrammetric techniques. Global Positioning System (GPS) checkpoints were collected via a Global Navigation Satellite System (GNSS) survey conducted between August 15 and September 14, 2015. For the purposes of open access to elevation and orthoimagery datasets in coastal regions of Alaska, this collection is being released as a Raw Data File with an open end-user license. Orthoimages contain 4-band, 8-bit, unsigned raster data (red/green/blue/no data; file format-GeoTIFF; source-Fairbanks Fodar) with 20 cm GSD. No-data values are found in band 4 or shown as transparent in red/green/blue images. The file employs Lempel-Ziv-Welch (LZW) compression. Light exposures in the orthoimages are a result of daily weather conditions, which ranged from low cloud cover, rain, and full sun.

Tags: chevak, coastal, coastal and river, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, marine geology, methods, newtok, raster image, surficial
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Nabesna Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (Light Detection and Ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. This digital surface model (mean_DSM) represents mean above-ground height of vegetation returns.

Tags: alaska, alaska highway corridor, alaska pipeline, digital surface model (dsm), gasline, geomorphology, lidar, mean vegetation elevation (dsm), nabesna quadrangle, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline, vegetation metric
Organization: State of Alaska
Sleetmute electromagnetic and magnetic airborne geophysical survey data compilation

The Sleetmute electromagnetic and magnetic airborne geophysical survey is located in western Alaska in the Aniak mining district, about 270 kilometers west of Anchorage, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system in October 2002. A total of 5014.4 line kilometers were collected covering 1746.8 square kilometers. Line spacing was 400 meters (m). Data were collected 30 m above the ground surface from a helicopter towed sensor platform ('bird') on a 30 m long line. The survey was conducted by Fugro Airborne Surveys and Stevens Exploration Management Corp. and administered by the Alaska Geological & Geophysical Surveys (DGGS). The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30223.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, aniak, apparent resistivity data, apparent resistivity map, apparent resistivity survey, barometer mountain, bell creek, california creek, central creek, conductivity survey, cribby creek, downey creek, eightmile creek, electromagnetic data, electromagnetic survey, exploration, first vertical derivative, frequency domain electromagnetic data, fuller creek, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, george river, georgetown, gridded data, kuskokwim river, line data, magnetic data, magnetic survey, magnetics, mccally creek, oskawalik river, parks creek, red devil, red devil creek, remote sensing, resistivity, resistivity survey, steamboat creek, vreeland creek, willis creek
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Bettles Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (Light Detection and Ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. Bare-earth digital elevation models (DEM) represent the earth's surface with all vegetation and human-made structures removed.

Tags: alaska, alaska highway corridor, alaska pipeline, bare-earth digital elevation model (dem), bettles quadrangle, gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Photogrammetry-derived orthoimagery and elevation for Goldfish Lake in Port Heiden, Alaska, collected May 7, 2021

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) collected low-altitude aerial images from an unmanned aerial vehicle (UAV) on May 7, 2021 and used Structure-from-Motion (SfM) photogrammetry to produce a digital surface model (DSM) and orthoimage of Goldfish Lake in Port Heiden. The orthoimagery and elevation data are for assessing coastal hazards and changes. We used Trimble Business Center to process the Global Navigation Satellite System (GNSS) data used for positional control. We used Agisoft Metashape to process the photogrammetry data. These products are released as a Raw Data File with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30792).

Tags: alaska peninsula, coastal and river, dggs, digital surface model (dsm), engineering, engineering geology, erosion, geologic, geology, geomorphology, geotechnical, goldfish lake, lake level, lakes, meshik, orthoimagery, port heiden, remote sensing, structure from motion, surficial, surficial geology, topography, web service
Organization: State of Alaska
U-Pb zircon data and ages for bedrock samples from the Richardson mining district, Big Delta Quadrangle, Alaska

During the 2017 and 2018 field seasons, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted geologic mapping and sampling in the Richardson mining district southeast of Fairbanks, including parts of the Big Delta B-4, B-5, B-6, and C-6 quadrangles. The project area has produced approximately 122,000 ounces of gold, mostly from placer mines, and includes the Uncle Sam, Montecristo, Richardson, Tower, and Hilltop lode gold exploration properties. The goal of DGGS's work in this area is to conduct a mineral-resource assessment and to build an improved understanding of the area's geology and controls on gold mineralization to facilitate industry exploration targeting. Uranium-lead (U-Pb) zircon geochronology results presented in this report show that similarly textured quartz-feldspar porphyry intrusions in the project area were generated by both Paleocene (56.8 +/- 0.9 Ma; 18WCW149) and middle Cretaceous (92.0 +/- 0.7 Ma; 18AW002, known as the Democrat Dike) magmatic episodes. The ages of medium-grained plutonic rocks at Birch Lake (92.4 +/- 0.6 Ma; 18ET587) and Gold Run (93.7 +/- 0.7 Ma; 18ET580) lie within error of the age of the hypabyssal Democrat Dike, indicating that the present-day depth of exposure juxtaposes rocks that were buried at widely different crustal depths during the middle Cretaceous. Phaneritic granodiorite near the Democrat prospect yielded a zircon age of 110.7 +/- 1.3 Ma (18RN565), extending the magmatic history of the prospect into the Early Cretaceous. Amphibolite-facies augen orthogneiss yielded a Late Devonian zircon age of 364.5 +/- 6.0 Ma (18ET040), consistent with similar rocks in the Lake George assemblage. Detrital zircons analyzed from siliciclastic schist along the Richardson Highway (18AW021) contain prominent age populations at 1.8 and 2.6 Ga, consistent with a Laurentian cratonic source and consistent with other results from parautochthonous North America. Pelitic schist from the Hilltop prospect (18TJN372) yielded a relatively small number (n=32) of zircon grains that define small age populations between ca. 1.7 and 1.5 Ga. All components of this data release are available on the DGGS website: http://doi.org/10.14509/30555.

Tags: age dates, analyses, analyses and sampling, analytical lab results, analytical results, bedrock, bedrock geology, canyon creek, chlorite, cretaceous, delta river mining district, democrat creek, detrital zircon, devonian, exploration, fairbanks mining district, feldspar, garnet, geochronology, geologic, geology, granite, granodiorite, igneous, igneous rocks, isotopes, junction creek, lab methods, metals, metamorphic, metamorphic minerals, metamorphic rocks, metamorphism, metasedimentary rocks, methods, mineralogy, minerals, muscovite, orthogneiss, plagioclase, plutonic, plutonic rocks, plutons, porphyry, quartz, redmond creek, richardson mining district, rock units, rocks, sample location, schist, sericite, sericite alteration, shamrock creek, tertiary, u-pb, zircon
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Nabesna Quadrangle, Alaska

In advance of design, permitting, and construction of a pipeline to deliver North Slope natural gas to out-of-state customers and Alaska communities, the Division of Geological & Geophysical Surveys (DGGS) has acquired lidar (Light Detection and Ranging) data along proposed pipeline routes, nearby areas of infrastructure, and regions where significant geologic hazards have been identified. Lidar data will serve multiple purposes, but have primarily been collected to (1) evaluate active faulting, slope instability, thaw settlement, erosion, and other engineering constraints along proposed pipeline routes, and (2) provide a base layer for the state-federal GIS database that will be used to evaluate permit applications and construction plans. The dataset represents all classified laser returns from the lidar survey and their associated geospatial coordinates.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar las file format, nabesna quadrangle, point cloud data, proposed natural gas pipeline, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Nome electromagnetic and magnetic airborne geophysical survey data compilation

The Nome geophysical survey is located in western Alaska in the Nome mining district, about 825 kilometers west of Fairbanks, Alaska and just north of Nome, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from August to September 1993. A total of 3856 line kilometers were collected covering 1361.02 square kilometers. Line spacing was 400 meters (m). Data were collected 30 m above the ground surface from a helicopter towed sensor platform ('bird') on a 30 m long line. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30189.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, anvil mountain, apparent resistivity data, apparent resistivity map, apparent resistivity survey, army peak, aurora mountain, banner peak, berkley canyon, butterfield canyon, cape nome, central river, conductivity survey, cone mountain, copper mountain, crater mountain, cripple river, dexter peak, eldorado river, electromagnetic data, electromagnetic survey, engstrom mountain, exploration, first vertical derivative, flambeau river, fox lake, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, glacial lake, gridded data, king mountain, line data, magnetic data, magnetic survey, magnetics, moonlight springs, mount brynteson, mount distin, newton peak, nome mining district, nome river, north fork snake river, north newton peak, norton sound, penny river, perkinsville, remote sensing, resistivity, resistivity survey, salmon lake, sinuk river, snake river, stewart river, sunset mine, twin lakes, twin mountain
Organization: State of Alaska
Alaska merged geophysical data grids

Merged grids of residual magnetic intensity and apparent resistivity compiled from the East Styx, Farewell, Middle Styx, and Styx River geophysical surveys.

Tags: airborne geophysical survey, alaska, electromagnetic data, electromagnetic survey, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, magnetic data, magnetic survey, magnetics, state of
Organization: State of Alaska