AndreaBozzo/ceres-open-data-index huggingface dataset:
Ketchikan electromagnetic and magnetic airborne geophysical survey data compilation

The Ketchikan 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 from February to April 1999. A total of 4750.8 line kilometers were collected covering 1648.6 square kilometers. Line spacing was 400 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. In the original 1999 release the Ketchikan survey was merged with data from several adjacent surveys (Kasaan, Hetta, and Dolomi). 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/10.14509/30430.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, aiken cove, aiken creek, aiken lake, airborne geophysical survey, alarm mine, analytic signal, apparent resistivity data, apparent resistivity map, apparent resistivity survey, babe islands, barren mountain, beaver creek, beaver mountain, big creek, black sand cove, blank inlet, bostwick creek, bostwick inlet, brennan bay, bucareli bay, cabin creek, cannery cove, cave creek, chapin peak, cholmondeley sound, city of thorne bay, clam cove, clare island, clarence strait, clarno cove, clump island, conductivity survey, cordova bay, dall bay, deichman island, dog salmon creek, dolomi bay, dora bay, dora lake, downdraft lake, electromagnetic data, electromagnetic survey, eudora mountain, exploration, first vertical derivative, foot lake, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, george inlet, goose bay, goose creek, government creek, grant cove, green monster mountain, gridded data, haida mine, hassiah inlet, helen island, hetta inlet, hetta lake, it mine, john creek, kasaan bay, kassa inlet, kassa island, keete inlet, keete island, ketchikan mining district, khayyam mine, kina creek, kina lake, kitkun bay, lake ellen, lake gertrude, lake isabel, lake josephine, lake marge, lake mary, lindeman lake, line data, loon lake, mabel bay, mabel island, magnetic data, magnetic survey, magnetics, mckenzie inlet, miller lake, mills bay, moira sound, myrtle creek, myrtle lake, natzuhini bay, nehenta bay, nelson cove, niblack lake, nowiskay cove, omar creek, paul lake, paul young creek, peacock island, phocena bay, polk creek, polk inlet, poor man creek, port johnson, portage creek, power lake, remote sensing, resistivity, resistivity survey, rock creek, rock lake, salt chuck mine, saltery cove, setter lake, skowl arm, smooth mountain, summit lake, sunny cove, sunny creek, tolstoi bay, tongass narrow, trocadero bay, twelvemile arm, twelvemile creek, unlucky island, vallenar creek
Organization: State of Alaska
Reconnaissance surficial-geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska

Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related information from these surface exposures, and how they relate to the area subsurface stratigraphy.

Tags: arctic national wildlife refuge, aufeis, brooks range, c14, eolian, fluvial, geologic map, geomorphology, glacial, glacial drift, glacial geology, glacial processes, glaciation, glaciers, holocene, icings, moraines, north slope basin, pleistocene, quaternary, shaviovik river, silt, surficial, surficial geology, thaw lakes
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Unalakleet, 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, storm surge, surface, tides, topography, unalakleet, water
Organization: State of Alaska
Geologic Map of the Anchorage C-7 NE Quadrangle, Alaska

This map is one of a series of four 1:25,000-scale quadrangle maps (Anchorage C-7 NE Quadrangle) intended to provide information on the geology and construction materials along the southern margin of the Talkeetna Mountains between Little Susitna River and Nancy Lake, Alaska. Additionally, the geologic map portrays faults, if present, as well as other lineaments that represent either faults or erosional features.

Tags: alaska, anchorage quadrangle, arkose ridge formation, castle mountain, castle mountain fault, construction materials, early jurassic, geology, holocene, late cretaceous, mesozoic, pleistocene, quaternary, southcentral alaska, state of, tertiary, tyonek formation
Organization: State of Alaska
Reconnaissance engineering-geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska

Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km�equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related information from these surface exposures, and how they relate to the area subsurface stratigraphy.

Tags: arctic national wildlife refuge, aufeis, brooks range, construction materials, engineering geology, floods, fluvial, geologic hazards, geologic map, icings, north slope basin, peat, permafrost, permeability, sand & gravel, shaviovik river, silt, slumping, thaw lakes
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment A: Wales to Teller

Aerial photographs of the coastline from Wales to Teller were collected on August 27, 2015 - August 28, 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: coastal, coastal and river, coastal erosion, engineering, engineering geology, environmental, geologic, geologic hazards, geological process, geology, geomorphology, hazards, hillshade image, holocene, methods, orthoimagery, raster image, seward peninsula, surface, surficial, surficial geology, teller, wales
Organization: State of Alaska
Alaska shoreline change tool

Coastlines are dynamic features that change shape and position on a range of timescales. As a result of this variability, many coastal communities in Alaska must carefully consider patterns of coastal erosion and/or accretion to appropriately plan for the future. Until now, a lack of available information and resources related to shoreline positional data has created challenges in assessing and planning for coastal hazards such as erosion. To address this identified data need, the Alaska Division of Geological & Geophysical Surveys (DGGS) has created the Alaska Shoreline Change Tool, an interactive map that displays historical and projected shoreline positions. This new tool will improve hazard assessments and aid in local management decisions. The Alaska Shoreline Change Tool contains the best available information for shoreline change analysis in Alaska. These data come from many sources and include contributions from shoreline mapping projects conducted by numerous investigators. This digital data distribution package provides digitized, historic shorelines that are proximal to the community of Emmonak.

Tags: engineering, engineering geology, environmental
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Philip Smith Mountains 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: aerial geology, alaska, digital elevation model, digital surface model (dsm), geologic hazards, geology, geomorphology, hazards, holocene, lidar, lidar las file format, philip smith mountains quadrangle, point cloud data, remote sensing, slope instability, state of, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Big Delta 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 vegetation digital surface models (veg_DSM) represent the above ground elevation of the highest laser return with all vegetation greater than 20 cm above the ground included.

Tags: alaska, alaska highway corridor, alaska pipeline, big delta quadrangle, digital surface model (dsm), gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline, vegetation digital surface model (dsm)
Organization: State of Alaska
Mercury injection capillary pressure results from outcrop samples in the Kaguyak, Naknek, and West Foreland formations, Iniskin Peninsula region, Alaska

This publication provides mercury injection capillary pressure (MICP) data for 36 outcrop samples collected from the Kaguyak, Naknek, and West Foreland formations in the Iniskin Peninsula region of Cook Inlet. The publication files provide: sample names, coordinates, and the formation from which samples were collected; per-sample pore aperture size distribution charts; formation pore volume graphs and data; pore system properties of each formation from which samples were analyzed; and correspondence from PetroTech Associates describing the methods used in MICP analyses of the samples, and a brief summary of the data

Tags: analyses, analyses and sampling, analytical results, chisik conglomerate member, cook inlet, cook inlet basin, cretaceous, energy, gas basins, geologic, geology, iliamna quadrangle, iniskin peninsula, jurassic, kaguyak formation, mercury injection capillary pressure analysis, mesozoic, naknek formation, oil and gas, oil and gas basin, oil basins, outcrop samples, permeability, petroleum basin study, pomeroy arkose member, porosity, reservoir, reservoir evaluation, reservoir quality, resources, sample location, seldovia quadrangle, shale, snug harbor member, tertiary, west foreland formation
Organization: State of Alaska
Airborne magnetic geophysical survey of the lower Yukon Delta, Alaska, data compilation

This airborne magnetic geophysical survey of the lower Yukon Delta, Alaska is in the St Michael, Kwiguk, and Black 1:250,000-scale USGS quadrangles on the Yukon River delta. Magnetic data were collected September 29 to November 20, 1995 by Aerodat. A total of 10,343.5 line kilometers were collected covering 7,402.9 square kilometers. Line spacing was 800 meters (m). Data were collected using a fixed wing aircraft with a median ground clearance of 90 m. The data, as well as additional metadata, are available from the DGGS website: http://doi.org/10.14509/30460.

Tags: aeromagnetic, aeromagnetic data, aeromagnetic map, aeromagnetic survey, agcklarok, ageklarok, ageklekak, airborne geophysical survey, akulurak, akumsuk, alakanuk, analytic signal, apoon, apparent resistivity data, apparent resistivity map, apparent resistivity survey, arovirchagk, avogon island, blind island, chaniliut, chifukluk, choolunawick, chulloonawick, conductivity survey, electromagnetic data, electromagnetic survey, emangak, emmonak, exploration, first vertical derivative, fish village, frequency domain electromagnetic data, geologic, geology, geophysical map, geophysical survey, geophysics, geophysics search tag, gridded data, hamilton, kaluchagun, kaluchagun island, kanelik, kanyak river, kawokhawik island, kothlik island, kotlik, kotlik river, kravaksanak, kravaksarak, kwiguk, kwiklokchun, kwikluak, kwikpuk, lamont, line data, little kotlik river, magnetic data, magnetic survey, magnetics, munson island, nagosakchowik, naguchik, nanvaranak lake, nelutahalik creek, new hamilton, nililak, nokogamiut island, nunaktuk island, nunam iqua, pastohk, pastolik, pastolik river, pieneluk island, ponglevik river, remote sensing, resistivity, resistivity survey, tuchiak, tukukapak, yukon delta, yukon river
Organization: State of Alaska
Geologic map of portions of the Livengood B-3, B-4, C-3, and C-4 quadrangles, Tolovana mining district, Alaska

This data file presents 40Ar/39Ar step-heating geochronology results for a granite sample from the Livengood mining district. The Livengood area is a historically productive placer mining area approximately 80 road miles north of Fairbanks, Alaska. This data is a component of a geologic map and accompanying report that synthesizes recently collected and previously published agency and industry geologic data in a 1:50,000-scale comprehensive geologic map to build a better understanding of the geology and mineral-resource potential of the Livengood area.

Tags: 40ar/39ar, airborne geophysical/geological mineral inventory, amy creek assemblage, bedrock, bedrock geology, cambrian, cascaden ridge, cascaden ridge unit, cenozoic, copper, cretaceous, devonian, eolian, fossils, geochemistry, geochronology, geologic map, gold, holocene, igneous rocks, livengood, livengood bench, livengood dome chert, livengood quadrangle, livengood terrane, lost creek unit, man-made deposits, mesozoic, metamorphic rocks, mississippian, money knob, ordovician, paleozoic, permian, pleistocene, pliocene, plutonic rocks, proterozoic, quaternary, rampart group, ranney hollow, sedimentary rocks, shorty creek, silurian, silver, statemap project, surficial geology, tailings, tertiary, tolovana mining district, tolovana river, triassic, victoria creek fault, wickersham unit, wilber creek unit
Organization: State of Alaska
Photogrammetry-derived digital surface model and orthoimagery of areas near the Dalton Highway, Yukon River Crossing, Alaska

The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced a digital surface model (DSM) and an orthorectified aerial image (orthoimagery) over Yukon River Crossing in support of landslide hazard mapping. Aerial photographs and Global Navigation Satellite System (GNSS) data were collected on June 30, 2016, and were processed using Structure-from-Motion (SfM) photogrammetric techniques to create the DSM and orthoimagery. 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/10.14509/30183). DSMs represent surface elevations of all surfaces, including vegetation, vegetation-free land, bridges, buildings, etc. The Yukon River (not including tributaries and lakes within the study area) was hydro flattened using standardized hydro flattening workflow in ArcMap (McLean, 2018) with a resulting elevation change from 85.1 m in the east to 81.1 m in the west within the DSM boundary (east-west streamflow direction). The DSM is a single-band, 32-bit float GeoTIFF file, with a ground sample distance (GSD) of 0.47 m. No Data value is set to -3.40282306074e+038.

Tags: aerial, aerial photography, big salt river, coastal and river, digital surface model (dsm), earthquake related slope failure, engineering, engineering geology, environmental, fracturing, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, hazards, landslide, melozitna mining district, methods, orthoimagery, pipeline, rampart mining district, raster image, ray river, rockfall, sightas island, slides, slope, slope instability, smoothface mountain, structure from motion, surface, surface water, surficial, surficial geology, tolovana mining district, topography, trans-alaska pipeline, vegetation, water, woodcamp creek, yukon river
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Livengood 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. Lake polygons represent areas of water bodies (excluding streams and rivers) > 150 square meteres, present at the time of lidar data collection.

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar lake polygons, livengood quadrangle, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Philip Smith Mountains 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 represents coefficient of variation of the above ground height of vegetation returns.

Tags: alaska, alaska highway corridor, alaska pipeline, coefficient variation, gasline, geomorphology, lidar, philip smith mountains quadrangle, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
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. The digital surface model represents percent canopy cover (between 0 and 1). Cover metric was computed in Fusion (McGaughey 2007), which assesses the percentage of total first returns within each cell that were returned from the canopy. For more specifics on Fusion Gridmetric outputs see the fusion manual (page 56).

Tags: alaska, alaska highway corridor, alaska pipeline, gasline, geomorphology, lidar, lidar canopy cover, pipeline, proposed natural gas pipeline, raster image, remote sensing, state of, talkeetna quadrangle, trans-alaska pipeline
Organization: State of Alaska