AndreaBozzo/ceres-open-data-index huggingface dataset:
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment L: Kipnuk to Kongiganak

Aerial photographs of the coastline from Kipnuk to Kongiganak were collected on August 11, 2015 - August 12, 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, engineering, engineering geology, environmental, geologic hazards, geology, geomorphology, hazards, kipnuk, kongiganak, marine geology, methods, raster image, surficial
Organization: State of Alaska
Lidar-derived elevation data for Speel Arm, Southeast Alaska, collected September 7, 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 a mountain slope adjacent to Speel Arm near Port Snettisham, Southeast Alaska, during near snow-free ground conditions on September 7, 2019. The survey provides snow-free surface elevations for deriving snow depth distribution models with repeat surveys during snow-covered conditions. Aerial lidar and ground control data were collected on September 7, 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/10.14509/30730).

Tags: aerial, aerial geology, avalanche, dggs, digital elevation model, digital surface model (dsm), digital terrain model, elevation, emergency preparedness, engineering, engineering geology, environmental, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, hillshade image, lidar, lidar intensity image, lidar las file format, point cloud data, port snettisham, raster image, remote sensing, slope, slope instability, southeast alaska, surface, surficial, surficial geology, topography, water, web service
Organization: State of Alaska
Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska

Report of Investigation 2006-2 v. 1.0.1, Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska, provides bedrock geologic map of an approximately 131-square-mile area surrounding the Liberty Bell Mine. The geology of the Liberty Bell area, located in the northern Alaska Range foothills, comprises Devonian metasedimentary and meta-igneous rocks of the Totatlanika Schist and Keevy Peak formations, Cretaceous and Tertiary igneous rocks, and overlying unconsolidated Tertiary sedimentary rocks of the Usibelli Group and the younger Nenana Gravel. The complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/15026.

Tags: 40ar/39ar, actinolite, age dates, alluvial, analyses, apatite, arenite, arsenopyrite, basalt, bedrock, bedrock geologic map, bedrock geology, bonanza creek, bonnifield mining district, california creek, chalcedony, chalcopyrite, chert, chicken creek, chlorite, clarke creek, clay, coal, coal creek, cody creek, conglomerate, cretaceous, daniels creek, devonian, diopside, diorite, eagle creek, early miocene, elsie creek, emma creek, epidote, eva creek, fairbanks quadrangle, feldspar, felsic, fluvial, folding, fracturing, garnet, gems, gems ncgmp09, geochemical data, geochronology, geologic, geologic map, geology, gneiss, gold, granite, granodiorite, graphite, gravel, greenstone, healy creek formation, hematite, homestake creek, hornblende, hornfels, igneous, igneous rocks, iron, iron creek, jasperoid, jumbo dome, kaolinite, keevy peak formation, late eocene, late miocene, liberty bell mine, lignite, lignite creek formation, limestone, lynx creek, magnetite, marguerite creek, metabasite, metamorphic, metamorphic rocks, mica, middle miocene, mineral development, mineral exploration, mineral resources, mineralogy, minerals, monazite, montmorillonite, moose creek, mudstone, nenana gravel, ore, orthogneiss, paleocurrent, paleozoic, palynology, pebble, petrography, plagioclase, pliocene, plutonic, porphyry, pyrite, pyrrhotite, quartz, quartzite, rex creek, rhyolite, rocks, sand, sandstone, scheelite, schist, sediment, sedimentary, sedimentary rocks, sericite, shale, silt, siltstone, spruce creek, statemap project, steep creek, subbituminous, suntrana formation, surface, talc, tertiary, totatlanika river, totatlanika schist, tourmaline, tremolite, tuff, uplift, volcanic, volcanic rocks, walker creek, wilson creek, windy creek, winter creek, zircon
Organization: State of Alaska
40Ar/39Ar data from the Tanacross D-1 and D-2, Big Delta B-4 and B-5, and Mount Hayes A-6 quadrangles, Alaska

This report presents 40Ar/39Ar step-heating geochronology results for igneous and metamorphic rocks from the Alaska Division of Geological & Geophysical Surveys' (DGGS) geologic mapping projects in the Northeastern Tanacross map area in the Tanacross D-1 and D-2 quadrangles, the Richardson map area in the Big Delta B-4 and B-5 quadrangles, and the Wrangellia map area in the Mount Hayes A-6 Quadrangle. Field samples were collected by the DGGS Mineral Resources section during detailed geologic mapping campaigns in 2013 and 2017. The complete report and digital data are available through the DGGS website: http://doi.org/10.14509/30112.

Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Talkeetna 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, talkeetna quadrangle, topographic map, trans-alaska pipeline
Organization: State of Alaska
Mercury injection capillary pressure (MICP) results from outcrop samples in the Tyonek, Beluga, and West Foreland Formations, Tyonek and Talkeetna quadrangles, Alaska

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) is currently engaged in a multi-year study of the hydrocarbon potential of the Tertiary and Mesozoic strata in Cook Inlet basin. This report summarizes mercury injection capillary pressure (MICP) data for 38 outcrop samples collected from the Tyonek, Beluga, and West Foreland Formations in the Tyonek and Talkeetna quadrangles. All samples were collected from measured stratigraphic sections. The Tyonek Formation samples have unimodal pore systems and the majority have well defined to sharp intrusion profiles. The Beluga Formation samples are characterized by unimodal pore systems and relatively broad intrusion profiles. The West Foreland Formation samples have much more heterogeneous pore structures and a majority of the samples display some level of bimodality. Six samples from within the various formations have entry pressures above 500 psia and these were evaluated for potential seal capacity. Three of the samples are Type C seals, under the Sneider Classification, and have an average potential seal capacity for oil of 565 feet, and 417 feet for gas (assuming 7.5% hydrocarbon saturation in the seal). One sample from the Beluga Formation is a Type B seal capable of trapping 2,670 feet and 1,971 feet of oil and gas, respectively. The best seals (Type A and A*) are from the West Foreland Formation, upper member, and have much higher potential seal capacities, up to 7,132 feet of oil and 5,265 feet of gas for the Type A* seal.

Tags: analyses, analytical results, beluga formation, cook inlet, cook inlet basin, gas basins, mercury injection capillary pressure analysis, oil and gas, oil and gas basin, oil basins, outcrop samples, permeability, petroleum, petroleum basin study, porosity, reservoir, reservoir evaluation, reservoir quality, sample location, sample location map, susitna basin, talkeetna quadrangle, tyonek formation, tyonek quadrangle, west foreland formation
Organization: State of Alaska
Reconnaissance geologic maps and sample data, Teller A-1, A-2, A-3, B-1, B-2, B-3, C-1, and Bendeleben A-6, B-6, C-6, D-5, D-6 quadrangles, Seward Peninsula, Alaska

Reconnaissance geologic maps and sample data, Teller A-1, A-2, A-3, B-1, B-2, B-3, C-1, and Bendeleben A-6, B-6, C-6, D-5, D-6 quadrangles, Seward Peninsula, Alaska, Open-File Report 69-236, provides 1:63,360 geologic mapping of parts of the Seward Penninsula, in western Alaska. This map was published by the USGS and has been scanned, digitized, and attributed by DGGS staff. 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/10827.

Tags: agiapuk river, alder creek, allene creek, alluvium, arctic creek, basalt, bay creek, bedrock, bering creek, blueschist, bluestone river, boulder creek, brevig lagoon, brevig mission, bull pup creek, california creek, canyon creek, cape riley, cavanaugh creek, chlorite, coyote creek, coyote creek dome, deerhorn creek, deese creek dome, dese creek, dewey creek, dggs, diabase, dolomite, eagle creek, elizabeth creek, epidote, eva mountain, fossils, fourmile point, fox creek, frazier creek, gabbro, garnet, gems db l3 compliant, gems db v1pt1, geologic, geologic map, geology, gold creek, gold hill, gold run, gold standard creek, grantley harbor, graywacke, groudy creek, harris creek, homestake creek, hornblende, hour creek, idaho creek, illinois creek, iron creek, john creek, june creek, last chance creek, leroy creek, limestone, little windy creek, loess, lombard creek, lucky ditch creek, lucky strike creek, lulu creek, marble, moonlight creek, mountain creek, mukacharni mountain, nepheline, nickle creek, nome mining district, oilfield creek, ordovician, outwash, paleozoic, peluk creek, peterboro creek, port clarence, port clarence mining district, potter pup creek, precambrian, quartz creek, quaternary, rabbit creek, red mountain, reindeer creek, ring creek, rocks, rogers creek, ruby creek, sand, sargent creek, saturday creek, schist, sediment, seward peninsula, shelman creek, short creek, silt, silurian, sixmile point, skookum creek, slate, slate creek, soda creek, spruce creek, star creek, strike creek, sulven creek, sunrise creek, sunset creek, swanson creek, teller, tertiary, twin mountain creek, walker creek, whitestone creek, whittren creek, wild goose creek, willow creek, windy creek, winter creek, yellowstone creek
Organization: State of Alaska
Surficial-geologic map, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska

During 2006 and 2007 the Alaska Division of Geological & Geophysical Surveys conducted reconnaissance surficial-geologic mapping in segment 1 of the Alaska Highway corridor, which straddles the Alaska Highway through the Tanana River valley from Delta Junction to the eastern boundary of the Mt. Hayes Quadrangle. Surficial-geologic deposits were initially mapped by interpreting ~1:63,360-scale, false-color infrared aerial photographs taken in August 1980 and field verified in 2006-2007.

Tags: age dates, alaska highway corridor, alluvial deposits, alluvial fan, alluvium, big delta, big delta quadrangle, c14, cenozoic, colluvial deposits, colluvium, delta junction, delta river, depositional environment, dot lake, dunes, eolian, erosion, erratics, esker, faults, floodplain, floods, gasline, geologic hazards, geologic map, geologic materials, geomorphology, glacial deposits, glacial drift, glacial geology, glacial hazards, glacial lake, glacial processes, gravel, holocene, ice contact deposits, jokulhlaups, lake george, lake level, landslide, measured sections, mount hayes quadrangle, outburst floods, outwash, paleoenvironment, paleosols, paludal, peat, permafrost, pleistocene, proposed natural gas pipeline, quaternary, radiocarbon dating, rock glaciers, sand, soil, soils, surficial, surficial geology, talus, tanana river, terrace, tertiary, thaw lakes, transportation corridor, unconsolidated deposits, water table
Organization: State of Alaska
Southern Delta River electromagnetic and magnetic airborne geophysical survey data compilation

The Southern Delta River electromagnetic and magnetic airborne geophysical survey is located in interior Alaska in the Delta River mining district, about 200 kilometers southeast of Fairbanks. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from August to September 2002. A total of 2,902.8 line kilometers were collected covering 1001 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/10.14509/30229.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, amphitheater mountains, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, boulder creek, cabin creek, chistochina mining district, clear creek, college creek, conductivity survey, cottonwood creek, delta river, delta river mining district, electromagnetic data, electromagnetic survey, eureka creek, exploration, first vertical derivative, fish creek, frequency domain electromagnetic data, gakona river, garrett creek, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, glacier gap, gridded data, gulkana river, gunn creek, line data, maclaren river, magnetic data, magnetic survey, magnetics, mccallum creek, rainy mountain, remote sensing, resistivity, resistivity survey, specimen creek, sugarloaf mountain, valdez creek mining district, wildhorse creek
Organization: State of Alaska
Tsunami inundation maps for King Cove and Cold Bay communities, Alaska

Potential tsunami hazards for the Alaska Peninsula communities of King Cove and Cold Bay were evaluated by numerically modeling the extent of inundation from tsunami waves generated by hypothetical earthquake sources and taking into account historical observations. Worst-case hypothetical scenarios are defined by analyzing the tsunami dynamics related to various slip distributions along the Aleutian megathrust. Our results show that the worst-case scenarios for King Cove and Cold Bay are thrust earthquakes in the western Alaska Peninsula region, with magnitudes ranging from Mw 8.9 to Mw 9.3, which have their greatest slip at 10-20 km (6-12 mi) depth. We also consider Tohoku-type ruptures and an outer-rise rupture in the western Alaska Peninsula area. 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.

Tags: active fault, alaska peninsula, aleutian islands, coastal, coastal and river hazards, cold bay, earthquake, earthquake related hazards, emergency preparedness, engineering geology, fault displacement, faulting, flood, geologic hazards, hazards, inundation, king cove, land subsidence, landslide, modeling, raster image, seismic gap, seismic hazards, tsunami
Organization: State of Alaska
Dolomi electromagnetic and magnetic airborne geophysical survey data compilation

The Dolomi geophysical survey is located in southeast Alaska in the Ketchikan area, about 350 kilometers south of Juneau, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system in March 1991. A total of 415 line kilometers were collected covering 81.2 square kilometers. Line spacing was 200 meters (m). Data were collected approximately 30 m above the ground cover or tree canopy from a helicopter-towed sensor platform ("bird") on a 30-m-long line. The large trees and steep terrain resulted in an average ground clearance of 150 m. The Dolomi survey was flown for the American Copper & Nickel Company, Inc. and provided to DGGS by provided by the Sealaska Corporation. The data were merged and released with the 1999 Ketchikan geophysical survey maps. Map sheets and some of the other files in this data release contain data from adjacent or nearby surveys. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30431.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, airborne geophysical survey, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, cholmondeley sound, clarence strait, conductivity survey, dolomi bay, dolomi mountain, electromagnetic data, electromagnetic survey, exploration, first vertical derivative, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, golden fleece mine, gridded data, halibut creek, james lake, john creek, ketchikan mining district, lake williams, line data, magnetic data, magnetic survey, magnetics, paul lake, port johnson, remote sensing, resistivity, resistivity survey, southeast alaska
Organization: State of Alaska
Tsunami inundation maps for Adak and Atka, Alaska

We evaluate potential tsunami hazards for Adak and Atka by numerically modeling tsunami inundation generated by earthquakes along the Alaska-Aleutian subduction zone. Hypothetical worst-case scenarios are defined by analyzing tsunami dynamics related to various plausible earthquake slip distributions. Potential tsunami sources include megathrust earthquakes in the area of the Andreanof Islands, the Alaska Peninsula, and the Cascadia subduction zone. We consider scenarios similar to the 2011 Tohoku earthquake in Japan with maximum slip located on a shallow portion of the plate interface close to the seafloor trench. The maximum modeled tsunami wave height is 10-15 m (33-50 ft) in both Adak and Atka. The numerical simulations reveal that for some scenarios, the first wave could reach Adak and Atka as soon as 15 and 30 minutes after the earthquake, respectively. Significant wave activity could continue for more than 12 hours after the earthquake, and the predicted average time interval between successive waves is 45 minutes to 1 hour. Results presented here are intended to provide guidance to local emergency management agencies for tsunami inundation assessment, evacuation planning, and public education to mitigate future tsunami hazards. The complete report and digital data are available from the DGGS website: http://doi.org/10.14509/30186.

Tags: adak, aleutian islands, atka, bathymetry, coastal, coastal and river, earthquake, emergency preparedness, engineering, engineering geology, environmental, fault displacement, faulting, faults, flood, geologic, geologic hazards, geological process, geology, geotechnical, hazards, inundation, marine geology, modeling, neotectonics, seismic hazards, surface, tectonics, tides, topography, tsunami
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Anchorage 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, anchorage quadrangle, gasline, geomorphology, lidar, lidar intensity image, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
Photogrammetry-derived digital surface model and orthoimagery of land areas near Resurrection Bay, Alaska

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial optical image mosaic (orthoimagery) of the Resurrection Bay watershed, surrounding the city of Seward in south-central Alaska. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on August 13, 2015, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. All data are projected in UTM Zone 6 North (meters) using the NAD83 (2011; EPSG 26906) horizontal datum and NAVD88 (Geoid12A; EPOCH 2010.00) vertical datum. The project was part of an ongoing investigation of the impact of flooding, slope instability, and cryosphere hazards on infrastructure and public safety. For the purpose of enabling open access to geospatial datasets in Alaska, this collection is being released as a Raw Data File with an open end-user license. All files can be downloaded free of charge from the DGGS website (http://doi.org/10.14509/29824). DSMs represent surface elevations of all surfaces, including vegetation, vegetation-free land, bridges, buildings, etc. The DSM is a single-band, 32-bit float GeoTIFF files using Lempel-Ziv-Welch (LZW) compression, with a ground sample distance (GSD) of 0.41 m. The No Data value is set to -32767.

Tags: aerial, bear creek, bear lake, bear lake glacier, bear mountain, box canyon creek, caines head, callisto peak, clear creek, derby cove, engineering, engineering geology, environmental, first lake, fourth of july creek, geologic, geologic hazards, geological process, geology, geomorphology, godwin creek, grouse lake, hazards, japanese creek, lakes, likes creek, little bear lake, lost creek, lost lake trail, lowell creek, lowell point, marathon mountain, methods, mount alice, mount benson, mount eva, orthoimagery, phoenix peak, preachers pond, prospect glacier, race point, raster image, resurrection bay, resurrection river, salmon creek, sawmill creek, scheffler creek, second lake, seward, slope, spring creek, spruce creek, surface, surficial, surficial geology, the lagoon, thumb cove, tiehacker mountain, tonsina creek, tonsina point, vegetation, water, woodrow
Organization: State of Alaska