{"action":"create","ckan_id":null,"date_created":"Wed, 11 Feb 2026 05:26:48 GMT","date_finished":null,"harvest_job_id":"3fc6d38a-714f-4388-8c6f-9d4e07a27820","harvest_source_id":"f4c7bbab-c7ef-4277-a7d3-c25b78854814","id":"cd2d669c-6966-437e-b8d1-22e65e2d4ab6","identifier":"https://dggs.alaska.gov/webpubs/metadata/RDF2022-10.xml","parent_identifier":null,"source_hash":"57923d1ed93e95aafda39514cf0264f11baaac48cf7cefd8dabb148d08b70b71","source_raw":"\r\n\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tHerbst, A.M.\r\n\t\t\t\tDaanen, R.P.\r\n\t\t\t\t2022\r\n\t\t\t\tLidar-derived elevation data for the Utqiagvik-Atqasuk region, Alaska, collected August 2019\r\n\t\t\t\tdata\r\n\t\t\t\t\r\n\t\t\t\t\tRaw Data File\r\n\t\t\t\t\tRDF 2022-10\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tFairbanks, Alaska, United States\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\t8 p.\r\n\t\t\t\thttps://doi.org/10.14509/30870\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\tLidar-derived elevation data for the Utqiagvik-Atqasuk region, Alaska, collected August 2019, Raw Data File 2022-10, provides classified point cloud, digital terrain model (DTM), surface model (DSM), and intensity model data for the communities of Utqiagvik and Atqasuk and surrounding areas. The data were collected in support of the Alaska Strategic Transportation and Resources (ASTAR) program for the purpose of investigating the potential for future road infrastructure connecting the communities. Aerial lidar data were collected between August 19 and 23, 2019, and subsequently processed using 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/10.14509/30870).\r\n\t\t\tThe data were collected in support of the Alaska Strategic Transportation and Resources (ASTAR) program for the purpose of investigating the potential for future road infrastructure connecting the communities.\r\n\t\t\t>classified points: Classified point cloud data are provided in this collection in compressed LAZ format. Data are classified in accordance with ASPRS 2014 guidelines and contain return and intensity information. The average ground point spacing was 34 cm and the average density was 8.51 pts/m^2\t\r\n>digital surface model: The DSM represents surface elevations including heights of vegetation, buildings, bridges, and other structures. The DSM is a single band, 32-bit GeoTIFF file, with a ground sample distance of 1 meter. No Data value is set to -3.40282306074e+038.\t\r\n>digital terrain model: The DTM represents surface elevations of ground surfaces, excluding vegetation, bridges, buildings, etc. The DTM is a single-band, 32-bit float GeoTIFF file, with a ground sample distance of 1 meter. No Data value is set to -3.40282306074e+038.\t\r\n>lidar intensity image: The lidar intensity image describes the relative amplitude of reflected signals contributing to the point cloud. Lidar intensity is largely a function of scanned object reflectance in relation to the signal frequency, is dependent on ambient conditions, and is not necessarily consistent between separate scans. The intensity image is a single-band, 32-bit float GeoTIFF file with a ground sample distance of 1 meter. No Data value is set to 3.40282306074e+038 (32-bit, floating-point minimum).\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\t20190919\r\n\t\t\t\t\t20190923\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\tground condition\r\n\t\t\r\n\t\t\r\n\t\t\tcomplete\r\n\t\t\tNone planned\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t-157.734935\r\n\t\t\t\t-156.215074\r\n\t\t\t\t71.355669\r\n\t\t\t\t70.466536\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tISO 19115 Topic Category\r\n\t\t\t\tgeoscientificInformation\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\tAerial\r\n\t\t\t\tAerial Geology\r\n\t\t\t\tCoastal\r\n\t\t\t\tCoastal and River\r\n\t\t\t\tDGGS\r\n\t\t\t\tDigital Elevation Model\r\n\t\t\t\tDigital Surface Model (DSM)\r\n\t\t\t\tDigital Terrain Model\r\n\t\t\t\tElevation\r\n\t\t\t\tEngineering\r\n\t\t\t\tEngineering Geology\r\n\t\t\t\tEnvironmental\r\n\t\t\t\tGeologic\r\n\t\t\t\tGeologic Hazards\r\n\t\t\t\tGeological Process\r\n\t\t\t\tGeology\r\n\t\t\t\tGeomorphology\r\n\t\t\t\tGeospatial Accuracy\r\n\t\t\t\tGeotechnical\r\n\t\t\t\tHydrology\r\n\t\t\t\tLiDAR\r\n\t\t\t\tLiDAR Intensity Image\r\n\t\t\t\tLiDAR LAS File Format\r\n\t\t\t\tPoint Cloud Data\r\n\t\t\t\tRaster Image\r\n\t\t\t\tRaster Index Shapefile\r\n\t\t\t\tRemote Sensing\r\n\t\t\t\tSlope Instability\r\n\t\t\t\tSurface\r\n\t\t\t\tSurface Fault Rupture\r\n\t\t\t\tSurficial\r\n\t\t\t\tSurficial Geology\r\n\t\t\t\tUnconsolidated Deposits\r\n\t\t\t\tWeb Service\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\tAkilloaq\r\n\t\t\t\tAmungna\r\n\t\t\t\tAtqasuk\r\n\t\t\t\tAvak Creek\r\n\t\t\t\tBeaded Creek\r\n\t\t\t\tBrowerville\r\n\t\t\t\tCape Smyth\r\n\t\t\t\tCity of Atqasuk\r\n\t\t\t\tEkalgruak Lake\r\n\t\t\t\tEmaiksoun Lake\r\n\t\t\t\tEvrulivik Lake\r\n\t\t\t\tFootprint Lake\r\n\t\t\t\tGoose Point\r\n\t\t\t\tIgtuluwik\r\n\t\t\t\tIkmakrak Lake\r\n\t\t\t\tIkroavik Lake\r\n\t\t\t\tImikpuk Lake\r\n\t\t\t\tInaru River\r\n\t\t\t\tIreniviq\r\n\t\t\t\tIsatkoak Lagoon\r\n\t\t\t\tIsatkoak Reservoir\r\n\t\t\t\tKigakrak\r\n\t\t\t\tKikoligarak Creek\r\n\t\t\t\tKiku\r\n\t\t\t\tKilusiktok Lake\r\n\t\t\t\tKimouksik Lake\r\n\t\t\t\tKugoosuguru\r\n\t\t\t\tKuogaguruq\r\n\t\t\t\tLake Sungovoak\r\n\t\t\t\tMayoeak River\r\n\t\t\t\tNapawrax\r\n\t\t\t\tNatirnuq\r\n\t\t\t\tNerravak Lagoon\r\n\t\t\t\tNigisaktuvik River\r\n\t\t\t\tNiklavik Creek\r\n\t\t\t\tNulavik\r\n\t\t\t\tNunavak Bay\r\n\t\t\t\tPingoakeok Lake\r\n\t\t\t\tPoint Shedden\r\n\t\t\t\tQaaliiq\r\n\t\t\t\tSaatkunak\r\n\t\t\t\tSikulik Lake\r\n\t\t\t\tSinaru\r\n\t\t\t\tSingaruak Creek\r\n\t\t\t\tSingat Creek\r\n\t\t\t\tSixtukak\r\n\t\t\t\tSukok Lake\r\n\t\t\t\tTekegakrok Point\r\n\t\t\t\tTikigaruk Point\r\n\t\t\t\tTractor Lake\r\n\t\t\t\tTuapaktushak Creek\r\n\t\t\t\tUsuktuk River\r\n\t\t\t\tUtqiagvik\r\n\t\t\t\tWalakpa River\r\n\t\t\t\r\n\t\t\r\n\t\tThis report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).\r\n\t\tAny hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\tMetadata Manager\r\n\t\t\t\t\r\n\t\t\t\t\tmailing and physical\r\n\t\t\t\t\t
3354 College Road
\r\n\t\t\t\t\tFairbanks\r\n\t\t\t\t\tAK\r\n\t\t\t\t\t99709-3707\r\n\t\t\t\t\tUSA\r\n\t\t\t\t\r\n\t\t\t\t(907)451-5020\r\n\t\t\t\t(907)451-5050\r\n\t\t\t\tdggspubs@alaska.gov\r\n\t\t\t\t8 am to 4:30 pm, Monday through Friday, except State holidays\r\n\t\t\t\tPlease view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.\r\n\t\t\t\r\n\t\t\r\n\t\tThese data products were funded by the U.S. Bureau of Land Management and the State of Alaska's Arctic Strategic Transportation and Resources (ASTAR) project. We thank Clearwater Air, Inc., for their professional and expert flight services.\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tBuzard, R.M.\r\n\t\t\t\tHeiner, Daniel\r\n\t\t\t\tOverbeck, J.R.\r\n\t\t\t\tGlenn, R.J.T.\r\n\t\t\t\t2021\r\n\t\t\t\tPhotogrammetry-derived orthoimagery and elevation for Wainwright, Alaska, collected August 3, 2021\r\n\t\t\t\t\r\n\t\t\t\t\tRaw Data File\r\n\t\t\t\t\tRDF 2021-18\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tFairbanks, Alaska, United States\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\t4 p\r\n\t\t\t\thttps://doi.org/10.14509/30791\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tGavel, M.M.\r\n\t\t\t\tHubbard, T.D.\r\n\t\t\t\t2021\r\n\t\t\t\tDigital data addendum: Analytical data and field observations from surficial geology and morphology of the Alaskan central Arctic Coastal Plain, 1981-1987\r\n\t\t\t\t\r\n\t\t\t\t\tReport of Investigation\r\n\t\t\t\t\tRI 93-1A\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tFairbanks, Alaska, United States\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\t6 p\r\n\t\t\t\thttps://doi.org/10.14509/30670\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\tNot applicable\r\n\t\t\r\n\t\tDGGS visually inspected the orthoimage for data errors such as shifts, seamline mismatches, and water noise overlapping land. There were no significantly erroneous areas that required repair.\r\n\t\tThis is a partial data release and contains all data collected except from the seven flightlines shown in figure 1 of the accompanying report. There is no over collect. The data quality is consistent throughout the survey.\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tHorizontal accuracy was not measured for this collection.\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tA mean offset of -25.5 cm was measured between 19 control points and point cloud ground returns. This offset was reduced to 0.001 cm by performing a vertical transformation of the lidar point data. Thirty-three check points were used to determine the non-vegetated vertical accuracy (NVA) of the point cloud ground class, using a TIN-based approach. Project NVA was calculated to have a root mean square error (RMSE) of 5.2 cm. Relative accuracy for this dataset was evaluated as the interswath overlap consistency and was measured at 0.95 cm RMSE. See the accompanying report for check points and additional detail.\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tAerial photogrammetric survey - DGGS used a Riegl VUX1-LR laser scanner integrated with a global navigation satellite system (GNSS) and Northrop Grumman LN-200C inertial measurement unit (IMU). The lidar integration system was designed by Phoenix LiDAR Systems. The sensor can collect up to 820,000 points per second over a distance of 150 m. This survey was flown with a pulse refresh rate of 400,000 pulses per second, at a scan rate between 80 and 220 lines per second. This survey was flown with an average elevation of 200 m above ground level and a ground speed of approximately 30 m/s with a fixed-wing configuration, using a Cessna 180. The scan angle was set from 80 to 280 degrees. The total area surveyed was approximately 1,595 km^2. Aerial lidar was collected between August 19 and 23, 2019. Seven flightlines collected on the evening of August 22 yielded too large a file for our software to process and the points from those lines are not represented in our final product.\r\n\t\t\t\t20190923\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tGround survey - Ground survey points from an UMIAQ, LLC, collection in September 2018, were used as control and checkpoint data for this dataset. These survey data were originally gathered in support of a USGS 3DEP funded lidar project, headed by Quantum Spatial (now NV5 Geospatial).\r\n\t\t\t\t201809\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tPhotogrammetric dataset processing - Point data were processed in SDCimport software for initial filtering and multiple-time-around (MTA) disambiguation. MTA errors, corrected in this process, are the result of imprecise interpretations of received pulse time intervals and occur more frequently with higher pulse refresh rates. Inertial Measurement Unit (IMU) and Global Navigation Satellite System (GNSS) data were processed in Inertial Explorer and used to integrate flightline information with the point cloud in Spatial Explorer software. The point data were calibrated at an incrementally precise scale of sensor movement and behavior, incorporating sensor velocity, roll, pitch, and yaw fluctuations throughout the survey. Points were classified in accordance with American Society for Photogrammetry and Remote Sensing (ASPRS) 2014 guidelines, using macros designed in Terrasolid software. Once classified, points underwent a geometric transformation and were converted from ellipsoidal heights to GEOID12B (Alaska) orthometric heights. Raster products were derived from the point cloud using ArcGIS Pro. The DTM was interpolated from all ground class returns using a TIN-based method. The DSM was likewise interpolated from only the first return points. An intensity image was also produced in ArcGIS Pro, using closest-to-mean binning.\r\n\t\t\t\t2022\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\traster\r\n\t\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tUniversal Transverse Mercator\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t4\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t0.999600\r\n\t\t\t\t\t\t\t-159\r\n\t\t\t\t\t\t\t0\r\n\t\t\t\t\t\t\t500000.000000\r\n\t\t\t\t\t\t\t0\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tcoordinate pair\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t.00000001\r\n\t\t\t\t\t\t.00000001\r\n\t\t\t\t\t\r\n\t\t\t\t\tMeters\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\t\r\n\t\t\t\tNAD83 (2011)\r\n\t\t\t\tGRS 80\r\n\t\t\t\t6378137\r\n\t\t\t\t298.257222101\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tNAVD88, GEOID12B\r\n\t\t\t\t0.001\r\n\t\t\t\tmeters\r\n\t\t\t\tExplicit elevation coordinate included with horizontal coordinates\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tclassified points\r\n\t\t\t\tClassified point cloud data are provided in this collection in compressed LAZ format. Data are classified in accordance with ASPRS 2014 guidelines and contain return and intensity information. The average ground point spacing was 34 cm and the average density was 8.51 pts/m^2\r\n\t\t\t\tDGGS\r\n\t\t\t\tclassified points\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tdigital surface model\r\n\t\t\t\tThe DSM represents surface elevations including heights of vegetation, buildings, bridges, and other structures. The DSM is a single band, 32-bit GeoTIFF file, with a ground sample distance of 1 meter. No Data value is set to -3.40282306074e+038.\r\n\t\t\t\tDGGS\r\n\t\t\t\tdigital surface model\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tdigital terrain model\r\n\t\t\t\tThe DTM represents surface elevations of ground surfaces, excluding vegetation, bridges, buildings, etc. The DTM is a single-band, 32-bit float GeoTIFF file, with a ground sample distance of 1 meter. No Data value is set to -3.40282306074e+038.\r\n\t\t\t\tDGGS\r\n\t\t\t\tdigital terrain model\r\n\t\t\t\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\tlidar intensity image\r\n\t\t\t\tThe lidar intensity image describes the relative amplitude of reflected signals contributing to the point cloud. Lidar intensity is largely a function of scanned object reflectance in relation to the signal frequency, is dependent on ambient conditions, and is not necessarily consistent between separate scans. The intensity image is a single-band, 32-bit float GeoTIFF file with a ground sample distance of 1 meter. No Data value is set to 3.40282306074e+038 (32-bit, floating-point minimum).\r\n\t\t\t\tDGGS\r\n\t\t\t\tlidar intensity image\r\n\t\t\t\r\n\t\t\r\n\t\r\n\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\r\n\t\t\t\tMetadata Manager\r\n\t\t\t\t\r\n\t\t\t\t\tmailing and physical\r\n\t\t\t\t\t
3354 College Road
\r\n\t\t\t\t\tFairbanks\r\n\t\t\t\t\tAK\r\n\t\t\t\t\t99709-3707\r\n\t\t\t\t\tUSA\r\n\t\t\t\t\r\n\t\t\t\t(907)451-5020\r\n\t\t\t\t(907)451-5050\r\n\t\t\t\tdggspubs@alaska.gov\r\n\t\t\t\t8 am to 4:30 pm, Monday through Friday, except State holidays\r\n\t\t\t\tPlease view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.\r\n\t\t\t\r\n\t\t\r\n\t\tRDF 2022-10\r\n\t\tThe State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.\r\n\t\t\r\n\t\t\tDGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.\r\n\t\t\tContact DGGS for current pricing\r\n\t\t\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tdata\r\n\t\t\t\t\t20220811\r\n\t\t\t\t\tclassified points, digital surface model, digital terrain model and lidar intensity image\r\n\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\thttps://doi.org/10.14509/30870\r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\r\n\t\t\t\t\t\r\n\t\t\t\t\r\n\t\t\t\r\n\t\t\tFree download\r\n\t\t\r\n\t\r\n\t\r\n\t\t20220811\r\n\t\t\r\n\t\t\t\r\n\t\t\t\t\r\n\t\t\t\t\tAlaska Division of Geological & Geophysical Surveys\r\n\t\t\t\t\tSimone Montayne\r\n\t\t\t\t\r\n\t\t\t\tMetadata Manager\r\n\t\t\t\t\r\n\t\t\t\t\tmailing and physical\r\n\t\t\t\t\t
3354 College Road
\r\n\t\t\t\t\tFairbanks\r\n\t\t\t\t\tAK\r\n\t\t\t\t\t99709-3707\r\n\t\t\t\t\tUSA\r\n\t\t\t\t\r\n\t\t\t\t(907)451-5020\r\n\t\t\t\t(907)451-5050\r\n\t\t\t\tdggspubs@alaska.gov\r\n\t\t\t\t8 am to 4:30 pm, Monday through Friday, except State holidays\r\n\t\t\t\r\n\t\t\r\n\t\tFGDC Content Standard for Digital Geospatial Metadata\r\n\t\tFGDC-STD-001-1998\r\n\t\tIf the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys.\r\n\t\t\r\n\t\t\thttps://dggs.alaska.gov/metadata/dggs.ext\r\n\t\t\tdggs metadata extensions\r\n\t\t\r\n\t\r\n","source_transform":null,"status":"error"}