AndreaBozzo/ceres-open-data-index huggingface dataset:
High-resolution lidar data for infrastructure corridors, Wiseman 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, wiseman quadrangle
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Kaktovik, 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, kaktovik, marine geology, outreach, sea level changes, shelf, shoreface, storm surge, surface, tides, topography, water
Organization: State of Alaska
Alaska Geologic Data Index (AGDI)

The Alaska Geologic Data Index (AGDI) is an actively growing index of unpublished geologic data collected throughout the state of Alaska. The records captured range from project documents to imagery to geochemical data. The index is designed to contain data and documents pertaining to all related fields of geology, including oil and gas, geologic engineering, minerals industry, scientific data, and agency archives. The index can refer to paper or digital information. Agencies, institutions, and the public are encouraged to contribute unpublished data to this dataset. Data owners can pick from three levels of data availability. These include: public - the data records in AGDI are visible to the public, and the archived documents are also available to the public; limited - the data records in AGDI are visible to the public, but the archived documents may not be available or are available at the discretion of the data owner; and private - records are visible only to the owner of the records and AGDI database administrator, and the archived documents may not be available or are available at the discretion of the data owner. If you would like to contribute data to this index, please contact the Alaska Division of Geological & Geophysical Surveys (DGGS) at dnr.dggs.webapps@alaska.gov.

Tags: alaska, analytical results, energy resources, engineering geology, environmental, geochemical data, geologic hazards, geologic materials, geology, geophysics, mineral resources, state of
Organization: State of Alaska
The 2008 phreatomagmatic eruption of Okmok Volcano, Aleutian Islands, Alaska: Chronology, deposits, and landform changes

Okmok volcano, Aleutian Islands, Alaska, explosively erupted over a five-week period between July 12 and August 23, 2008. The eruption was predominantly phreatomagmatic, producing fine-grained tephra that covered most of northeastern Umnak Island. The eruption had a maximum Volcanic Explosivity Index (VEI) of 4, with eruption column heights up to 16 km during the opening phase. Several craters and a master tuff cone formed in the caldera as a result of phreatomagmatic explosions and accumulated tephra-fall and surge deposits. Ascending magma continuously interacted with an extensive shallow groundwater table in the caldera, resulting in the phreatomagmatic character of the eruption. Syneruptive explosion and collapse processes enlarged a pre-existing lake, created a second, entirely new lake, and formed new, deep craters. A field of ephemeral collapse pits and collapse escarpments formed where rapid groundwater withdrawal removed material from beneath capping lava flows. This was the first significant phreatomagmatic event in the U.S. since the Ukinrek Maars eruption in 1977. This digital data release provides GIS files of field station locations and various geographic features described in the accompanying report.

Tags: active volcanoes, aleutian arc, aleutian islands, ash cloud, ash fall, caldera, cone a, cone b, cone c, cone d, cone e, cone f, cone g, cone h, cone i, cone j, fort glenn, geologic hazards, geomorphology, geothermal, groundwater, heat flow study, historic eruption, holocene, lahar, lahar runout flow, lake level, mount, okmok, okmok caldera, okmok hot springs, okmok volcano, stratigraphy, surface water, tephra, umnak island, umnak quadrangle, unalaska quadrangle, volcanic ash, volcanic eruption, volcaniclastics, volcanology
Organization: State of Alaska
Analyses of historic U.S. Bureau of Mines samples for geochemical trace-element and rare-earth-element data from the Circle mining district, western Crazy Mountains, and the Lime Peak area of the White Mountains, Circle Quadrangle, east-central Alaska

This report and digital data release presents 286 new geochemical analyses on historic U.S. Bureau of Mines (USBM) samples, including 93 rock, 110 stream sediment, 52 soil, and 28 heavy mineral concentrate (pan concentrate) samples, as well as 3 samples of indeterminate type. These samples were originally collected as part of studies by the USBM in the Circle mining district, western Crazy Mountains, and Lime Peak area of the White Mountains, Circle Quadrangle, east-central Alaska. Historic USBM sample materials were retrieved by DGGS from the DGGS Geologic Materials Center (GMC), where the USBM samples were transferred as part of the federally funded Minerals Data and Information Rescue in Alaska (MDIRA) program in the late 1990s and early 2000s. The text and analytical data and tables associated with this report are being released in digital format as PDF files and .csv files. We provide analytical data, detection limits and, when available, the method documentation provided to us by the lab. We also provide the sample location in geographic coordinates, the sample material cited by the originating literature, a reference to the originating report, and the type of sample material that was obtained from the archive and sent to the lab.

Tags: analyses and sampling, base metals, circle mining district, circle quadrangle, critical minerals, economic geology, economic study, exploration, geochemical data, geochemical surveys, geochemistry, geology, heavy metals, 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, strategic and critical minerals assessment project, strategic minerals, trace elements, trace geochemical, trace metals, white mountains
Organization: State of Alaska
Lidar-derived elevation data for lower Serpentine Glacier and adjacent slopes, Southcentral, Alaska, collected October 14, 2022

Lidar-derived elevation data for lower Serpentine Glacier and adjacent slopes, Southcentral, Alaska, collected October 14, 2022, Raw Data File 2023-14, uses aerial lidar to produce a classified point cloud, a digital terrain model (DTM), and an intensity model of the unstable slope at Serpentine Glacier, located in Prince William Sound in Southcentral Alaska. Aerial and ground control data were collected on October 14, 2022, and subsequently processed using a suite of geospatial processing software. These data support a paraglacial rock slope destabilization study at Serpentine Glacier and will be used to assess and characterize an ongoing landslide hazard. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/31012).

Tags: aerial, aerial geology, coastal, coastal and river, debris avalanche, dggs, digital elevation model, digital terrain model, elevation, emergency preparedness, engineering, engineering geology, environmental, erosion, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, glacial, glacial deposits, glacial geology, glacial geomorphology, glacial processes, glaciers, harriman fiord, hazards, hillshade image, landslide, landslide susceptibility, lidar, lidar intensity image, lidar las file format, point cloud data, prince william sound, raster image, remote sensing, rock avalanche, rockfall, serpentine glacier, slope, slope instability, southcentral alaska, surface, surficial, surficial geology, topography, unconsolidated deposits, water
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Healy 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, healy quadrangle, lidar, lidar las file format, point cloud data, proposed natural gas pipeline, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Sonar and seismic lake surveys along the proposed triangle road corridor, northwestern Alaska, collected July 6-13, 2021

Sonar and seismic lake surveys along the proposed triangle road corridor, northwestern Alaska, collected July 6-13, 2021, Raw Data File 2023-1, provides bathymetric sonar and seismic data for 12 lakes in a proposed road corridor between Atqasuk and Wainwright, Alaska, on July 6-13, 2021. These surveys aimed to assess gravel resources in northwestern Alaska as part of the Arctic Strategic Transportation and Resources (ASTAR) program. We measured lake depths with an Edgetech 2205 sonar system and imaged near-surface sediment profiles with an Edgetech sub-bottom profiler, or chirp sensor, installed in a catamaran-style Sea Robotics SR-Surveyor M1.8 autonomous hydrographic survey system. Very little is known about lake-bottom conditions in the region. In addition to acquiring new information about North Slope lake bathymetry, this work serves as a pilot study to identify optimal equipment configuration and project design for challenging, helicopter-supported remote data collection. The data associated with this report are available in digital format as bathymetric digital terrain models (DTMs), bathymetric control points, sontek density and salinity profiles, sonar images, seismic profiles, and a comma-separated value (CSV) file of the lake locations. The data are available from the DGGS website: http://doi.org/10.14509/30954.

Tags: atqasuk, bathymetry, dggs, elevation, geologic, geologic materials, geology, geomorphology, gravel, hydrology, hydrology and surficial geology, kunarak creek, lakes, north slope, permafrost and periglacial, resources, surface, walik creek, water
Organization: State of Alaska
Photogrammetry-derived orthoimagery and elevation for Saint Paul, Alaska, collected July 22-25, 2021

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) collected low-altitude aerial images from an unmanned aerial vehicle (UAV) from July 22 to 25, 2021 and used Structure-from-Motion (SfM) photogrammetry to produce digital surface models (DSMs) and orthoimagery of North Beach, Polovina Beach, and the City of Saint Paul, Alaska. 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 Professional 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/10.14509/30836).

Tags: aerial, aerial geology, aerial photography, bering sea, coastal, coastal and river, coastal erosion, dggs, digital surface model (dsm), elevation, emergency preparedness, engineering, engineering geology, environmental, erosion, flood, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, orthoimagery, photogrammetry, pribilof islands quadrangle, raster image, remote sensing, saint paul, saint paul island, sea level changes, shaded relief, structure from motion, surface, surficial, surficial geology, topography, water, web service
Organization: State of Alaska
Engineering-geologic database of the proposed Alaska Natural Gas Transportation System (ANGTS) corridor from Prudhoe Bay to Delta Junction, Alaska

This publication is a 6 CD-ROM compilation of data describing the bedrock, surficial, and engineering geology of a portion of the proposed Alaska Natural Gas Transportation System corridor. Maps or reports with scales of 1:250,000 or greater that cross or come within 5 miles of the centerline were included in this compilation. Two maps with scales smaller than 1:250,000 were also included: OFR 82-1071 and OFR 98-133. A complete bibliography of references used in this compilation is on the first CD-ROM of this project in ANGTSgis/RefsCited.doc. This project consists of an ArcView 3.x (AV) .apr file and a Microsoft Access 2000 (MS Access) database. The ArcView project and the Access database are linked using AccessLink, which runs from ArcView. A free, limited version of AccessLink is included with this compilation on the first CD-ROM in ANGTSgis/Extras/AccessLinkLTD.avx. This version of the ANGTS AV project and MS Access database covers the area from Prudhoe Bay to Delta Junction. Scanned versions of documents or maps are linked to the AV 3.x project and to the Access database.

Tags: beaver quadrangle, beechey point quadrangle, bettles quadrangle, big delta quadrangle, chandalar quadrangle, construction materials, dalton highway, engineering geology, fairbanks quadrangle, geologic hazards, geologic map, livengood quadrangle, materials site, natural gas, philip smith mountains quadrangle, sagavanirktok quadrangle, tanana quadrangle, wiseman quadrangle
Organization: State of Alaska
Major-oxide and trace-element geochemistry of mafic rocks in the Carboniferous Lisburne Group, Ivishak River area, northeastern Brooks Range, Alaska

The Alaska Division of Geological & Geophysical Surveys, in collaboration with the University of Alaska Fairbanks, collected mafic rocks in the Ivishak River area of the northeastern Brooks Range during summer 2009 for geochemical sampling. The sampled rocks, including lava flows, sills, and limy volcaniclastic strata, crop out within the carbonate-platform succession of the Carboniferous Lisburne Group. Refer to Herriott and others (2011) for additional information regarding the geologic and geographic context of these samples, preliminary implications of the geochemical data presented here, and a summary of known mafic rock occurrences in the Arctic Alaska terrane. The analytical data tables associated with this report are being released in digital format as comma-delimited text (CSV) files.

Tags: analyses and sampling, brooks range, carboniferous, ellesmerian sequence, geochemical data, geochemistry, igneous, igneous rocks, ivishak river, lisburne group, major oxides, sagavanirktok quadrangle, trace elements
Organization: State of Alaska
Updated tsunami inundation maps of the Kodiak area, Alaska

Staff from Alaska Earthquake Center, Geophysical Institute and Alaska Division of Geological & Geophysical Surveys evaluated potential potential tsunami hazard for the communities of Kodiak, Womens Bay, and for the U.S. Coast Guard base on Kodiak Island by numerically modeling the extent of inundation from tsunami waves generated by hypothetical earthquake sources. Worst-case hypothetical scenarios are defined by analyzing results of a sensitivity study of the tsunami dynamics related to various slip distributions along the Alaska-Aleutian megathrust. The worst-case scenarios for the Kodiak communities are thought to be the subduction zone earthquakes offshore Kodiak Island with their greatest slip at 5-35 km (3.1-22 mi) depth. We also consider earthquakes as large as the 2011 Tohoku earthquake in Japan with the greatest slip located close to the trench area. The results show that the maximum predicted flow depth in downtown Kodiak could reach 13 m (42.6 ft), and the currents in Kodiak's Inner Harbor could be as strong as 3.7 m/sec (7.2 knots). The dangerous wave activity is expected to last for at least 10 hours after the earthquake. Results presented here are intended to provide guidance to local emergency management agencies in tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards. This report updates the previously published assessment of tsunami hazard for the Kodiak Island communities. Users can access the complete report and digital data from the DGGS website: http://doi.org/10.14509/29740.

Tags: active fault, bathymetry, coastal, coastal and river, earthquake, emergency preparedness, engineering, engineering geology, environmental, fault displacement, faulting, faults, flood, geologic, geologic hazards, geology, hazards, holocene, inundation, kodiak, kodiak island, kodiak island borough, kodiak quadrangle, kodiak station, land subsidence, landslide, marine geology, modeling, neotectonics, pillar mountain, seismic hazards, slope, subduction, subsidence, surface, tectonics, tides, topography, tsunami, water
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Fairbanks 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), fairbanks quadrangle, gasline, geomorphology, lidar, mean vegetation elevation (dsm), proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline, vegetation metric
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery of Pittman 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 Pittman 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/10.14509/30279.

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
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 highest-hit digital surface models (DSM) represent the earth's surface with all vegetation and human-made structures included.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, highest hit digital surface model (dsm), lidar, proposed natural gas pipeline, raster image, remote sensing, sagavanirktok quadrangle, state of, trans-alaska pipeline
Organization: State of Alaska