AndreaBozzo/ceres-open-data-index huggingface dataset:
Farewell and Middle Styx survey areas: Project report, interpretation maps, EM anomalies, stacked multi-channel profiles, and other products of the airborne geophysical surveys, parts of the McGrath, Lime Hills, and Tyonek quadrangles, south-central Alaska

This digital publication, GPR 2014-4, contains CGG's analysis and interpretation of data produced from airborne geophysical surveys published by DGGS in 2013 (GPR 2013-1) and 2014 (GPR 2014-5) for the Middle Styx and Farewell survey areas respectively. The two survey blocks Farewell and Middle Styx are referred to as the 'Farewell' survey in the project report as these blocks were flown under one contract. Elsewhere the separate block names, Farewell and Middle Styx, are typically used. CGG's frequency-domain DIGHEM V system was used for the EM data. GPR 2014-4 includes (1) CGG's project report with interpretation and detailed EM Anomalies, and (2) Multi-channel stacked profiles in pdf format. Interpretation maps and EM anomalies are provided in various formats (e.g., Geotiffs , KMZs, and others) and are listed in detail in gpr2014_004_readme (.txt and .pdf). Other supporting files include gpr2014_004_browsegraphic.pdf, farewell_middlestyx_emanomaly_readme.pdf, farewell_middlestyx_smprofiles_readme.pdf, and many legends as jpgs.

Tags: aeromagnetic map, aeromagnetic survey, airborne geophysical survey, alaska, apparent resistivity data, dighem v em system, electromagnetic anomalies, electromagnetic data, electromagnetic survey, geophysics, hem survey, interpretation, lime hills quadrangle, magnetic survey, magnetics, mcgrath mining district, mcgrath quadrangle, project report, stacked multi-channel profiles, state of, strategic and critical minerals assessment project, tyonek quadrangle, yentna mining district
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 represents coefficient of variation of the above ground height of vegetation returns.

Tags: alaska, alaska highway corridor, alaska pipeline, coefficient variation, fairbanks quadrangle, gasline, geomorphology, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
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. 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, sagavanirktok quadrangle, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
U-Pb zircon age data from meta-igneous rocks in the Clearwater Mountains, Mount Hayes A-6 Quadrangle, Alaska

We report U-Pb zircon geochronology results for one metavolcanic and one metaplutonic rock sample from the Mount Hayes A-6 Quadrangle of central Alaska. These samples are representative of rock units assigned to the Clearwater terrane of Jones and others (1987), a sequence of greenschist-grade metavolcanic and metasedimentary rocks of poorly constrained age and tectonic origin. Our results indicate a crystallization age of 277.33 +/- 11.84 Ma for a felsic metavolcanic rock, and a 268.05 +/- 11.64 Ma crystallization age for a granitic metaplutonic unit intruding the former.

Tags: age dates, analyses, analyses and sampling, analytical lab results, bedrock, bedrock geology, clearwater terrane, geochronology, geology, lab methods, metamorphic rocks, metavolcanic rocks, mount hayes quadrangle, orthogneiss, permian, sample location, u-pb, zircon
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 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, big delta quadrangle, gasline, geomorphology, lidar, lidar canopy cover, pipeline, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Valdez 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, valdez quadrangle
Organization: State of Alaska
Geology and ore deposits of the central York Mountains, western Seward Peninsula, Alaska

Bulletin 1287, Geology and ore deposits of the central York Mountains, western Seward Peninsula, Alaska, provides (1:63,360-scale) geologic mapping of parts of the U.S. Geological Survey (USGS) Teller B-5, B-6, C-5, and C-6 quadrangles. This map was published by the USGS and has been scanned, digitized, and attributed. 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/3665.

Tags: alluvial, alma creek, anderson creek, anikovik river, banner creek, beach deposits, bedrock, bedrock geology, bendeleben quadrangle, bering sea, brachiopods, brooks mountain, buck creek, calcite, camp creek, cassiterite creek, cassiterite peak, chert, clara creek, clear creek, conglomerate, cretaceous, crystal creek, curve creek, deer horn peak, dolomite, don river, elkington creek, esch creek, fan, feldspar, fossils, fracture, gabbro, gems db l3 compliant, gems db v1pt1, generalized, geologic map, geology, glacial, glacial deposits, granite, graptolites, graywacke, igneous, kanauguk river, king river, koteebue creek, kotzebue creek, lamprophyre, late ordovician, limestone, lost creek, lost river, magnetite, mariposa creek, metals, middle ordovician, mint river, moonlight creek, moraines, non-metals, onnuteschuik creek, outwash, paleogene, philadelphia creek, porphyry, port clarence mining district, price creek, quartz, quaternary, rapid river, rhyolite, rocks, sedimentary, shale, siltstone, skookum creek, slate, slope, sterling creek, surficial, talus, teller quadrangle, terrace, tin, tin creek, tundra, yankee river, york creek, york mountains
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Chandalar 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, chandalar quadrangle, digital surface model (dsm), 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
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. Hillshade (shaded relief) images, produced from bare-earth DEMs provide a visual representation of topographic relief.

Tags: alaska, alaska highway corridor, alaska pipeline, fairbanks quadrangle, gasline, geomorphology, hillshade image, lidar, proposed natural gas pipeline, remote sensing, shaded relief, state of, topographic map, trans-alaska pipeline
Organization: State of Alaska
High-resolution lidar data from the west Susitna area, Southcentral, Alaska

The Alaska Division of Geological & Geophysical Surveys used airborne lidar to produce a digital terrain model (DTM) and digital surface model (DSM) for the west Susitna area, about 65 km (40 mi) west of Wasilla, Alaska. Airborne data were collected November 4-10, 2019, and subsequently processed in Terrasolid and ArcGIS. Ground control data were concurrently collected by DGGS. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30455).

Tags: aerial, aerial geology, alexander creek, bates creek, bear creek, beluga river, canyon creek, canyon lake, clear creek, coffee creek, deep creek, digital surface model (dsm), digital terrain model, dog lake, elevation, engineering, engineering geology, friday creek, geologic, geology, geomorphology, geotechnical, lidar, olson creek, point cloud data, pretty creek, quartz creek, raster image, remote sensing, saturday creek, skwentna river, surface, surficial, surficial geology, susitna, talachulitna creek, talachulitna river, texas creek, threemile creek, thursday creek, topography, trail creek, tukallah lake, viapan lake, wasilla, wolverine creek
Organization: State of Alaska
High-resolution lidar data for infrastructure corridors, Gulkana 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, gulkana quadrangle, lidar, proposed natural gas pipeline, raster image, remote sensing, state of, trans-alaska pipeline
Organization: State of Alaska
Regional tsunami hazard assessment for the communities of Port Alexander, Craig, and Ketchikan, Southeast Alaska

We assess potential tsunami hazards for coastal communities in Southeast Alaska: Port Alexander, Craig, Saxon, Mountain Point, and Ketchikan. The primary tsunami hazard for these communities is considered to be far-field, with the major threat originating from tsunamigenic earthquakes along the Alaska-Aleutian subduction zone across the Gulf of Alaska. We numerically model tsunami waves generated by four different megathrust earthquakes and develop approximate tsunami hazard maps for the three communities. The hypothetical tsunami scenarios that we examined include variations of an extended 1964 rupture, megathrust earthquakes in the Prince William Sound and the Alaska Peninsula regions, and a Cascadia megathrust earthquake. The maximum runup heights are 4 m (13.1 ft) in Port Alexander, 3.2 m (10.5 ft) in Craig, and 1 m (3.3 ft) in Ketchikan. Results presented here are intended to provide guidance to local emergency management agencies in initial tsunami inundation assessment, evacuation planning, and public education for mitigation of future tsunami hazards. The complete report and digital data are available from the DGGS website: http://doi.org/10.14509/30196.

Tags: active fault, bald headed cove, bathymetry, behm canal, bucareli bay, chatham strait, chichagof mining district, clam cove, clarence strait, coastal, coastal and river, crab bay, craig, craig island, earthquake, east island, emergency preparedness, engineering, engineering geology, fault displacement, faulting, faults, flood, geologic, geologic hazards, geological process, geology, george inlet, geotechnical, hazards, herring bay, herring cove, holocene, inundation, ketchikan, knudson cove, marine geology, modeling, mountain point, mud bay, neotectonics, pacific ocean, pennock island, port alexander, port higgins, radenbough cove, refuge cove, refuge cove state recreation site, saxman, seismic hazards, shelter cove, ship cove, southeast alaska, surface, tectonics, tides, tongass narrows, totem bight state historical park, tsunami, vallenar bay, ward cove, whisky cove
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Point Hope, 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, point hope, sea level changes, shelf, shoreface, storm surge, surface, tides, topography, water
Organization: State of Alaska
Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska, segment 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. 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, 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, 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. 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, 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), wiseman quadrangle
Organization: State of Alaska
Shoreline change at Alaska coastal communities, Golovin, 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, golovin, hazards, inundation, marine geology, outreach, sea level changes, shelf, shoreface, storm surge, surface, tides, topography, water
Organization: State of Alaska
Coastal bluff stability assessment for Homer, Alaska

Coastal bluff stability assessment for Homer, Alaska, Report of Investigation 2022-5, evaluates the stability of coastal bluffs in Homer, Alaska, using aerial imagery and modern elevation data. We produce maps of historical shoreline change and an alongshore bluff instability hazard score. Shoreline change is calculated by comparing the bluff top and toe positions in historical and modern orthorectified aerial imagery. Since 1951, Homer's coastal bluffs have eroded at an average rate of -1.0 ft/yr (-0.29 m/yr). Key indicators of bluff instability are historical shoreline change rates, bluff slope and height, vegetation, existing erosion protection structures, and water drainage. Most of the Homer coastline has a low to medium bluff instability hazard score. These coastal hazard assessment products can guide decisions to reduce risk. These products are released as a DGGS publication component with an open end-user license. All files can be downloaded from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30908).

Tags: beluga lake, bidarki creek, bluff point, coastal, coastal and river, coastal erosion, cook inlet, dggs, diamond creek, engineering, engineering geology, environment, environmental, erosion, fritz creek, geodatabase, geologic, geologic hazards, geological process, geology, geomorphology, geotechnical, groundwater emergence, hazards, homer, hydrology, image interpretation, interpretation, kachemak bay, lampert lake, landslide, methods, shingle beach, slides, slope, slump, surface
Organization: State of Alaska
Alaska Volcano Observatory geochemical database

Alaska Volcano Observatory's geochemical database contains published whole-rock data for Quaternary volcanic rocks in Alaska, linked to geologist, publication, source volcano (where possible), and other sample and analysis metadata. This database also contains water cation and anion data for recent AVO studies. This website allows users to query the database and return datasets as fully-documented .html or .csv tables. It is our intention to update this dataset as new volcano-related geochemical data is published.

Tags: chemistry, geochemical data, geochemistry, geology, hazards, volcanic, volcanoes, volcanology
Organization: State of Alaska