AndreaBozzo/ceres-open-data-index huggingface dataset:
Photogrammetric digital surface models and orthoimagery of Mackenzie Road, 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 MacKenzie Road 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/10.14509/30277.

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
Zircon U-Pb and 40Ar/39Ar results from dikes collected within the Bruin Bay fault zone, lower Cook Inlet

This data release presents 40Ar/39Ar step-heating geochronology results from rocks collected roughly 7 km southwest of Contact Point, Iliamna B-3 Quadrangle. Samples obtained from a felsic dike intruding the principal Bruin Bay fault plane near Contact Point produced biotite and plagioclase 40Ar/39Ar ages of 36.5 +/- 0.8 Ma and 31.5+/-0.7 Ma, respectively. The age dates inform stratigraphic, structural, and geochronologic studies along the western margin of lower Cook Inlet basin. The accompanying report also presents zircon U-Pb LA-ICP-MS geochronology results for dikes near Ursus Head.

Tags: 40ar/39ar, age dates, analyses, analyses and sampling, analytical lab results, analytical results, ar-ar, bedrock, bedrock geology, bruin bay fault, cenozoic, contact point, cook inlet, cook inlet basin, eocene, fault displacement, geochronology, geologic, geology, igneous, iliamna quadrangle, isotopes, lab methods, lead, mesozoic, methods, oligocene, plagioclase, rocks, sample location, stratigraphy, structural geology, structure, tectonics, triassic, u-pb, uranium, ursus head, volcanic, volcanic rocks, zircon
Organization: State of Alaska
Western Fortymile electromagnetic and magnetic airborne geophysical survey data compilation

Western Fortymile electromagnetic and magnetic airborne geophysical survey is located in eastern Alaska in the Fortymile mining district, about 225 kilometers east of Fairbanks, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system in September 2007. A total of 1825.9 line kilometers were collected covering 646.3 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/10.14509/30178.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, caribou creek, conductivity survey, drumstick prospect, east eva prospect, electromagnetic data, electromagnetic survey, eva creek prospect, eva prospect, exploration, first vertical derivative, fish creek, fish prospect, fortymile mining district, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gold bottom creek, gold creek, gridded data, iron creek, kechumstuk creek, ketchumstuk prospect, line data, little enchilada prospect, little whiteman creek prospect, little whiteman prospect, lwm prospect, magnetic data, magnetic survey, magnetics, mckinley creek, missoula creek, mitchell prospect, molly creek, molly creek prospect, mount veta, my creek prospect, norvell creek, oscar prospect, oscar west prospect, remote sensing, resistivity, resistivity survey, ruby silver prospect, sheba mountain, silver bow creek, telegraph creek, texas creek prospect, van milligan creek, veta creek, watson fork, west lwm prospect
Organization: State of Alaska
Preliminary bedrock geologic map database, northeastern Richardson mining district, Alaska

During the 2017 field season, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted geologic mapping and sampling of part of the Richardson mining district southeast of Fairbanks, Alaska. The project area is about 30 miles west of the Pogo gold mine and covers gold exploration activity at the Montecristo and Uncle Sam properties. This work aims to build an improved understanding of the area's geology and controls on gold mineralization for purposes of exploration targeting and mineral-resource assessment. The 260-square-mile map area lies between the Salcha River and Shaw Creek and is bounded by the Trans-Alaska Pipeline access road to the southwest. The area is characterized by forested, moderate-relief hills blanketed by vegetation, loess, and locally, sand dunes. Rock outcrop is less than one percent; consequently, the map interpretation relies heavily on the DGGS East Richardson airborne magnetic and electromagnetic survey as well as rocks collected from pits dug into rocky colluvial deposits below surficial loess or sand. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/30676.

Tags: alaska, amphibolite, bedrock, bedrock geology, caribou creek, cretaceous, devonian, dggs, diorite, early cretaceous, economic geology, economic study, fairbanks mining district, flat creek, geologic, geology, gilles creek, gneiss, gold run creek, granite, igneous, igneous rocks, keystone creek, late cretaceous, lenant creek, mccoy creek, metamorphic, metamorphic rocks, metamorphism, metasedimentary rocks, metavolcanic rocks, migmatite, mineral assessment, mineral deposit, mineral development, mineral localities, mineral prospect, mineral resources, minerals, mining, minton creek, mississippian, monte cristo creek, ninetyeight creek, ore deposit, ores, orthogneiss, pegmatite, plutonic, plutonic rocks, plutons, porphyry, precious metals, prospecting sites, proterozoic, quartzite, resource assessment, resource information, resources, richardson mining district, rock units, rocks, rosa creek, salcha river, schist, serpentinite, structure, triassic, twentyfive mile creek, uncle sam creek
Organization: State of Alaska
Lidar-derived elevation data for Eaglecrest ski area, Southeast Alaska, collected September 6, 2019

The Alaska Division of Geological & Geophysical Surveys (DGGS) used aerial lidar to produce a classified point cloud, digital surface model (DSM), digital terrain model (DTM), and intensity model of Eaglecrest ski area and surroundings on Douglas Island, Southeast Alaska, during near snow-free ground conditions on September 6, 2019. The survey provides snow-free surface elevations for deriving snow depth distribution models with repeat surveys during snow-covered conditions. Aerial lidar were collected on September 6, 2019, and ground control data were collected on September 8, 2019, and subsequently processed in a suite of geospatial processing software. 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/10.14509/30729).

Tags: aerial, aerial geology, avalanche, cropley lake, dggs, digital elevation model, digital surface model (dsm), digital terrain model, douglas island, elevation, emergency preparedness, engineering, engineering geology, environmental, fish creek, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, hilda creek, hillshade image, juneau, lidar, lidar intensity image, lidar las file format, mount anderson, point cloud data, raster image, remote sensing, saddle mountain, slope, slope instability, southeast alaska, surface, surficial, surficial geology, topography, water, web service
Organization: State of Alaska
Shoreline change at Alaska coastal communities, St. Michael, 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, marine geology, outreach, sea level changes, shelf, shoreface, st. michael, storm surge, surface, tides, topography, water
Organization: State of Alaska
Farewell electromagnetic, magnetic, and radiometric airborne geophysical survey data compilation

The Farewell geophysical survey is located in the Alaska Range of southcentral Alaska in the Yentna and McGrath mining districts, about 150 kilometers northwest of Anchorage, Alaska. Frequency domain electromagnetic, magnetic, and radiometric data were collected with the DIGHEMV system from September 12th to November 3rd, 2012 and June 29th to September 27th, 2013. A total of 7187.5 line kilometers were collected covering 2544.9 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/10.14509/30190.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, bear creek, brush creek, conductivity survey, dalzell creek, earl river, electromagnetic data, electromagnetic survey, exploration, first vertical derivative, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, goodman pass, gridded data, jones river, line data, lyman fork, magnetic data, magnetic survey, magnetics, mcgrath mining district, middle fork kuskokwim river, north fork, north fork big river, pass creek, pass fork, post river, rainy pass, rainy pass lake, remote sensing, resistivity, resistivity survey, sheep creek, smith lake, south fork kuskokwim river, tatina river, terra cotta mountains, tin creek, widgeon lake, windy fork middle fork kuskokwim river, wolverine creek, yentna mining district
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Tanana 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.Lidar intensity images depict intensity values of the lidar-laser returns.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar intensity image, proposed natural gas pipeline, remote sensing, shaded relief, state of, tanana quadrangle, topographic map, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Tanacross 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, point cloud data, proposed natural gas pipeline, remote sensing, state of, tanacross quadrangle, trans-alaska pipeline
Organization: State of Alaska
Geospatial database: Compiled geologic mapping in the area of the proposed Susitna-Watana hydroelectric project, south-central Alaska

In support of the proposed Susitna-Watana Hydroelectric Project, the Alaska Division of Geological & Geophysical Surveys (DGGS) developed a Geographic Information System (GIS)-based geologic compilation of published and unpublished maps for twelve, inch-to-mile (1:63,360-scale) quadrangles encompassing the proposed hydroelectric project footprint, including the anticipated reservoir and surrounding area. DGGS geologists reviewed and analyzed existing geologic mapping for quality and completeness, and the maps were converted for use in GIS. The conversion process included scanning and georeferencing the original hard-copy map documents, creating a geodatabase, digitizing the geologic data, assigning attributes, and producing a digital data product for public release. The best available geologic mapping was synthesized into a single compilation data layer, and is packaged along with georeferenced scans and digitized vector files of the original geologic source maps. Bedrock geology was reviewed and revised by an independent contractor to ensure consistency with current geologic interpretations of the area. This geodatabase product will be a valuable reference resource for developers, planners, and scientists working on the hydroelectric project, as well as for any other projects in the area.

Tags: bedrock geologic map, bedrock geology, generalized, geodatabase, geologic map, geology, gis, healy quadrangle, hydropower, project report, regional, surficial, surficial geologic map, surficial geology, susitna, susitna dam, susitna north, susitna river, susitna-watana hydroelectric project, talkeetna mountains, talkeetna mountains quadrangle, unconsolidated deposits
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment D: Elim to Stebbins

Aerial photographs of the coastline from Elim to Stebbins were collected on July 30, 2015 - August 6, 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. 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: coastal, coastal and river, elim, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, marine geology, methods, raster image, stebbins, surficial
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Tyonek 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. Hillshade (shaded relief) images, produced from bare-earth DEMs provide a visual representation of topographic relief.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, hillshade image, lidar, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline, tyonek quadrangle
Organization: State of Alaska
Geologic map of the Kechumstuk fault zone in the Mount Veta area, Fortymile mining district, east-central Alaska

Scientific Investigations Map 3291, Geologic map of the Kechumstuk fault zone in the Mount Veta area, Fortymile mining district, east-central Alaska, provides detailed (1:63,360-scale) geologic mapping of parts of the U.S. Geological Survey (USGS) Eagle A-4 and A-5 quadrangles. This data release is a conversion of the originating geospatial data published by the USGS and may include minor modifications necessary for schema compliance. The dataset contains geologic, structural, stratigraphic, and geochronologic data organized according to the GeMS and AK GeMS mapping schemas. The geodatabase and ESRI fonts and style files are available from the DGGS website: https://dggs.alaska.gov/pubs/id/29865.

Tags: alluvial, amphibolite, basalt, bedrock, bedrock geology, caribou creek, cedar creek, colluvium, copper creek, cretaceous, denali fault, devonian, early cretaceous, early jurassic, eocene, eva creek, faulting, faults, felsic, fortymile mining district, gems, gems ncgmp09, geologic, geologic map, geology, gneiss, gold bottom creek, gold creek, granite, granodiorite, gravel, graywacke, greenschist, greenstone, holocene, hornfels, igneous, igneous rocks, iron creek, kechumstuk creek, landslide, late devonian, late triassic, limestone, marble, metamorphic, migmatite, mineral assessment, mineral development, mineral exploration, mineral resources, mississippian, molly creek, mount veta, mudstone, my creek, norvell creek, orthogneiss, our creek, paleozoic, porphyry, quartzite, rhyolite, rocks, sandstone, schist, shale, shear, silver bow creek, solifluction, surficial, telegraph creek, tintina fault, ultramafic, veta creek
Organization: State of Alaska
Tsunami inundation maps of the villages of Chenega Bay and northern Sawmill Bay, Alaska

Potential tsunami hazards for the community of Chenega Bay, located on Evans Island between Sawmill and Crab bays, were evaluated by numerically modeling the extent of inundation from tsunami waves generated by earthquakes. Tsunami scenarios include a repeat of the tsunami triggered by the 1964 Great Alaska Earthquake, as well as tsunamis generated by a hypothetically extended 1964 rupture, a hypothetical Cascadia megathrust earthquake, a hypothetical earthquake in the Kodiak asperity of the 1964 rupture, and a hypothetical Tohoku-type rupture in the Gulf of Alaska region. Results of numerical modeling are verified by simulations of the tectonic tsunami observed in Chenega Cove during the 1964 earthquake. The results presented here are intended to provide guidance to local emergency management agencies in tsunami-hazard assessment, evacuation planning, and public education, to reduce damages from future tsunami hazards.

Tags: alaska earthquake 1964, coastal, coastal and river, coastal and river hazards, earthquake, earthquake related hazards, emergency preparedness, engineering, engineering geology, fault displacement, flood, geologic hazards, hazards, holocene, inundation, modeling, seismic hazards, southcentral alaska, tsunami
Organization: State of Alaska
High resolution lidar-derived elevation data for Barry Arm landslide, Southcentral Alaska, June 26, 2020

The Alaska Division of Geological & Geophysical Surveys (DGGS) used aerial lidar to produce a classified point cloud and high-resolution digital terrain model (DTM), digital surface model (DSM), and intensity model of the Barry Arm landslide, northwest Prince William Sound, Alaska, during near snow-free ground conditions on June 26, 2020. The survey's goal is to provide high quality and high resolution (0.10 m) elevation data to assess potential landslide movement. Aerial lidar and ground control data were collected on June 26, 2020, and subsequently processed in Terrasolid and ArcGIS. Ground control was collected on June 26, 2020, as well. This data collection is released as a Raw Data File with an open end-user license. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30593).

Tags: aerial, aerial geology, aerial photography, barry arm, barry glacier, college fjord, debris avalanche, debris flow, digital elevation model, digital surface model (dsm), digital terrain model, elevation, engineering, engineering geology, esther island, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, glacial, glacial deposits, glacial geology, glacial geomorphology, glacial processes, harriman fiord, landslide, landslide susceptibility, lidar, passage canal, point cloud data, port wells, remote sensing, rock avalanche, rockfall, slope, slope instability, surface, surficial, surficial geology, topography, tsunami, unconsolidated deposits, web service, whittier
Organization: State of Alaska