{"action":"create","ckan_id":null,"date_created":"Wed, 18 Feb 2026 05:51:10 GMT","date_finished":null,"harvest_job_id":"7f24349c-98a0-4aa6-be75-b8f43afb6f0e","harvest_source_id":"f4c7bbab-c7ef-4277-a7d3-c25b78854814","id":"baa637fc-72e0-4d33-88a6-e139af192ea6","identifier":"https://dggs.alaska.gov/webpubs/metadata/RDF2023-10.xml","parent_identifier":null,"source_hash":"18a56c2256f511d941f1afef1387eda6a6ce81403d0c4c763fa75f94c9623ca8","source_raw":"Horen, K.C.Brayton, C.E.Christian, J.E.Overbeck, J.R.Poisson, A.C.Siemsen, Z.J.2023Single-beam bathymetric data near Stebbins, Alaska, collected July 10-11, 2022csvRaw Data FileRDF 2023-10Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys8 p.https://doi.org/10.14509/31008Single-beam bathymetric data near Stebbins, Alaska, collected July 10-11, 2022, Raw Data File 2023-10, presents bathymetric data collected near Stebbins, Alaska, on July 10 and 11, 2022. The purpose of this survey is to provide bathymetric data for the assessment of coastal hazards and riverine erosion studies. These data were collected using an M2Ocean Hydroball integrated bathymetric sensor and processed using CIDCO DepthStar software. Coincident Global Navigation Satellite System (GNSS) base station and water level time series data were collected using Trimble survey equipment and Solinst Levelogger pressure and temperature sensors, respectively, to correct horizontal and vertical positions. This data product does not meet the International Hydrographic Organization (IHO) bathymetric coverage standard (IHO, 2022), is not intended to determine navigability, and is released as a Raw Data File with an open end-user license. The data are available from the DGGS website: http://doi.org/10.14509/31008.This work provides bathymetric data for the assessment of coastal hazards and riverine erosion studies.>bathymetric_data: Bathymetric sounding data delivered in comma-delimited (CSV) format with column headers and accompanied by a data dictionary detailing the header names, definitions, and applicable units.2022071020220711ground conditionCompleteNone planned-162.327215-162.26642763.52918863.490111ISO 19115 Topic CategorygeoscientificInformationAlaska Division of Geological & Geophysical SurveysDGGSThis 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).Any 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.Alaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical
3354 College Road
FairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysPlease 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.We thank the Native Village and City of Stebbins for supporting the creation of these data products, made possible with the National Fish and Wildlife Foundation's National Coastal Resilience Funding through our partners at the Alaska Native Tribal Health Consortium. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the Alaska Division of Geological & Geophysical Surveys, the U.S. Government, the National Fish and Wildlife Foundation, or the National Fish and Wildlife Foundation's funding sources. Mention of trade names or commercial products does not constitute endorsement by the Alaska Division of Geological & Geophysical Surveys, the U.S. Government, the National Fish and Wildlife Foundation, or the National Fish and Wildlife Foundation's funding sources.Buzard, R.M.Overbeck, J.R.Chriest, JonathanEndres, K.L.Plumb, E.W.2021Coastal flood impact assessments for Alaska communitiesReport of InvestigationRI 2021-1Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys16 phttps://doi.org/10.14509/30573Buzard, R.M.Turner, M.M.Miller, K.Y.Antrobus, D.C.Overbeck, J.R.2021Erosion exposure assessment of infrastructure in Alaska coastal communitiesReport of InvestigationRI 2021-3Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys29 phttps://doi.org/10.14509/30672Overbeck, J.R.Buzard, R.M.Turner, M.M.Miller, K.Y.Glenn, R.J.2020Shoreline change at Alaska coastal communitiesReport of InvestigationRI 2020-10Fairbanks, Alaska, United StatesAlaska Division of Geological & Geophysical Surveys29 p., 47 sheetshttps://doi.org/10.14509/30552Using the IHO minimum bathymetric standards (IHO, 2022) would be inappropriate for assessing these data, which do not meet the IHO-prescribed systematic survey pattern criteria. DGGS has developed order of accuracy criteria for the qualification of bathymetric survey data separate from but based on the IHO stand-ards to avoid misinterpretation. The reported accuracy of these data is intended to express quality only and should not be considered sufficient for safe navigation.DGGS filtered out low-quality, non-differential (single) GNSS position data using standard categorization (single, float, fixed). All 0.0 m depth soundings, excessive noise, and vertical anomalies were removed through visual inspection. DGGS used time series data for depth and attitude (pitch and yaw) to manually remove anomalous soundings and any sounding reporting an attitude deviation larger than twenty degrees. No significant erroneous areas requiring repair were identified during this quality control process. Base station data were processed using the OPUS static processing service, which derives GNSS coordinates from the average of three independent, single-baseline solutions, each computed by double-differenced carrier-phase measurements from three nearby National Continuously Operating Reference Stations (CORS). OPUS provides the range of the three individual single baselines, known as the peak-to-peak error. These ranges include any errors from the CORS used during processing (NOAA, 2022). OPUS ortho height ranges are estimated using the same calculations applied to horizontal error reporting, typically resulting in a much larger potential error compared to the peak-to-peak error of the ellipsoid height. For more accurate ortho height error reporting, DGGS used NOAA's Vertical Datum Transformation software for final elevation conversions from NAD83 (2011) ellipsoidal heights to NAVD88 (GEOID12B) ortho heights. This software employs accurate, multi-parameter mathematical equations and location-specific grid models to perform vertical transformations and report the total root-mean-square error (NOAA, 2016).This data releaase is complete.We quantified the horizontal accuracy using methods described in the accompanying report.We quantified the vertical accuracy using methods described in the accompanying report.Field collection - DGGS used an M2Ocean Hydroball bathymetric sensor, composed of an Imagenex 852 single-beam echosounder (SBES), a Tallysman TW3972 GNSS antenna, and a Honeywell HMR3000 inclinometer to collect field data. On July 10 and 11, 2022, DGGS temporarily installed a Trimble R10 receiver sampling at 5 Hz as a GNSS base station over temporary benchmarks. Base station data were used to correct the HydroBall sensor positions. To provide water level corrections, DGGS collected derived water level time series data from two temporarily installed Solinst model 3001 Levelogger IEdge LT M10/F30 pressure and temperature sensors, one fully submerged approximately 22 m offshore northwest of Stebbins and the other placed in a dry, shaded location on land.20220711Survey details - The bathymetric survey was performed on July 10 and 11, 2022, from 11:55 AM to 1:30 PM and 3:00 PM to 4:45 PM AKDT, respectively. The weather during the survey on July 10 was mostly clear, with little to no wind and calm waters. The weather during the survey on July 11 was overcast, with light wind and wave heights under 0.25 m. The Hydroball was attached to a catamaran configuration and towed behind a small boat equipped with an outboard motor at speeds below 4 knots during the first portion of the survey on July 10 and throughout the survey on July 11. The Hydroball, in the catamaran configuration, was hand towed approximately 5 m from the shore during the second portion of the survey on July 10. The Imagenex 852 SBES was configured with a maximum range of 20 m, gain of 5 dB, and pulse length of 120 microseconds. Due to time and vessel constraints, the bathymetric survey was performed using a survey pattern inconsistent with the requirements outlined in the IHO standards (IHO, 2022). Approximately 22.0 km of near-shore marine bathymetry were surveyed.20220711Data processing - Data were processed using methods described in the accompanying report.2022pointUniversal Transverse Mercator30.999600-1650500000.0000000coordinate pair.00000001.00000001MetersNAD83 (2011)GRS 806378137298.257222101NAVD88, GEOID12B0.002metersAttribute valuesrdf2023_10_bathymetric_data.csv, rdf2023_10_bathymetric_data-dictionary.csvBathymetric sounding data delivered in comma-delimited (CSV) format with column headers and accompanied by a data dictionary detailing the header names, definitions, and applicable units.Alaska Division of Geological & Geophysical Surveys (DGGS)bathymetric_dataAlaska Division of Geological & Geophysical SurveysMetadata Managermailing and physical
3354 College Road
FairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysPlease 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.RDF 2023-10The 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.DGGS 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.Contact DGGS for current pricingcsv20231128bathymetryhttps://doi.org/10.14509/31008Free download20231128Alaska Division of Geological & Geophysical SurveysSimone MontayneMetadata Managermailing and physical
3354 College Road
FairbanksAK99709-3707USA(907)451-5020(907)451-5050dggspubs@alaska.gov8 am to 4:30 pm, Monday through Friday, except State holidaysFGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998If 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.https://dggs.alaska.gov/metadata/dggs.extdggs metadata extensions","source_transform":null,"status":"error"}