Identification_Information: Citation: Citation_Information: Originator: Horen, K.C. Originator: Buzard, R.M. Originator: Overbeck, J.R. Originator: Poisson, A.C. Originator: Siemsen, Z.J. Publication_Date: 2023 Title: Single-beam bathymetric data near Kwigillingok, Alaska, collected June 18-19, 2022 Geospatial_Data_Presentation_Form: csv Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2023-7 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 9 p. Online_Linkage: https://doi.org/10.14509/31005 Description: Abstract: Single-beam bathymetric data near Kwigillingok, Alaska, collected June 18-19, 2022, Raw Data File 2023-7, provides bathymetric data from the Kwigillingok, Alaska, area, collected on June 18 and 19, 2022. The purpose of this survey was 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. DGGS collected coincident Global Navigation Satellite System (GNSS) base station and water-level time series data using Trimble survey equipment and a Stilltek iGage ra-dar sensor, 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/10.14509/31005. Purpose: This work provides bathymetric data for the assessment of coastal hazards and riverine erosion studies. Supplemental_Information: >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. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20220618 Single_Date/Time: Calendar_Date: 20220619 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -163.168675 East_Bounding_Coordinate: -163.089442 North_Bounding_Coordinate: 59.886593 South_Bounding_Coordinate: 59.828470 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Bathymetry Theme_Keyword: Channel Theme_Keyword: Coastal Theme_Keyword: Coastal Erosion Theme_Keyword: Coastal and River Theme_Keyword: DGGS Theme_Keyword: Drainage Patterns Theme_Keyword: Emergency Preparedness Theme_Keyword: Engineering Theme_Keyword: Engineering Geology Theme_Keyword: Environment Theme_Keyword: Environmental Theme_Keyword: Erosion Theme_Keyword: Estuary Theme_Keyword: Flood Theme_Keyword: Geologic Theme_Keyword: Geologic Hazards Theme_Keyword: Geological Process Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Geotechnical Theme_Keyword: Hazards Theme_Keyword: Hydrology Theme_Keyword: Instrumentation Theme_Keyword: Marine Geology Theme_Keyword: River Erosion Theme_Keyword: Sediment Theme_Keyword: Sediment Transport Theme_Keyword: Sedimentation Theme_Keyword: Shoreface Theme_Keyword: Surface Theme_Keyword: Surface Water Theme_Keyword: Water Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Kuskokwim Bay Place_Keyword: Kwigillingok Place_Keyword: Kwigillingok River Temporal: Temporal_Keyword_Thesaurus: Walker, J.D., Geissman, J.W., Bowring, S.A, and Babcock, L.E., comp., 2012, Geologic Time Scale v. 4.0: Geological Society of America Temporal_Keyword: Holocene Access_Constraints: This 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). Use_Constraints: 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. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please 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. Data_Set_Credit: We thank the Native Village and City of Kwigillingok 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 conclu-sions contained in this document are those of the authors and should not be interpreted as represent-ing the opinions or policies of the Alaska Division of Geological & Geophysical Surveys, the U.S. Gov-ernment, 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. Cross_Reference: Citation_Information: Originator: Buzard, R.M. Originator: Overbeck, J.R. Originator: Chriest, Jonathan Originator: Endres, K.L. Originator: Plumb, E.W. Publication_Date: 2021 Title: Coastal flood impact assessments for Alaska communities Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 2021-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 16 p Online_Linkage: https://doi.org/10.14509/30573 Cross_Reference: Citation_Information: Originator: Buzard, R.M. Originator: Turner, M.M. Originator: Miller, K.Y. Originator: Antrobus, D.C. Originator: Overbeck, J.R. Publication_Date: 2021 Title: Erosion exposure assessment of infrastructure in Alaska coastal communities Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 2021-3 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 29 p Online_Linkage: https://doi.org/10.14509/30672 Cross_Reference: Citation_Information: Originator: Overbeck, J.R. Originator: Buzard, R.M. Originator: Turner, M.M. Originator: Miller, K.Y. Originator: Glenn, R.J. Publication_Date: 2020 Title: Shoreline change at Alaska coastal communities Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 2020-10 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 29 p., 47 sheets Online_Linkage: https://doi.org/10.14509/30552 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The use of the IHO minimum bathymetric standards (IHO, 2022) would be inappropriate for assessment of these data, which do not meet the IHO prescribed systematic survey pattern criteria. To avoid misinterpretation, DGGS has developed order of accuracy criteria for the qualification of bathymetric survey data separate from but based on the IHO standards. The reported accuracy of these data is intended to express quality only and should not be considered sufficient for safe navigation. We describe methods in the accompanying report Logical_Consistency_Report: 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 both depth and attitude (pitch and yaw) to manually re-move 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 coordi-nates 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. OPUS ortho height ranges are estimated using the same calculations applied to horizontal error report-ing, 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. Completeness_Report: This data releaase is complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: We quantified the horizontal accuracy using methods described in the accompanying report. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: We quantified the vertical accuracy using methods described in the accompanying report. Lineage: Process_Step: Process_Description: 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 inclinom-eter to collect field data. On June 18, 2022, DGGS temporarily installed a Trimble R10 receiver sampling at 5 Hz as a GNSS base station over known benchmark 946 5911 B with a published solution available from https://www.ngs.noaa.gov/OPUS/getDatasheet.jsp?PID=BBGM53&ts=19297165248. On June 19, 2022, DGGS temporarily installed the GNSS base station over a found Bureau of Land Management (BLM) brass-cap monument stamped "S4098." Base station data were used to correct the Hydroball sensor positions. DGGS collected water-level time series data from a permanently installed Stilltek iGage Stream Gauge on a metal bridge over a navigable tributary of the Kwigillingok River to provide water level corrections. Process_Date: 20220619 Process_Step: Process_Description: Survey details - The bathymetric survey was performed on June 18 and 19, 2022, from 1:50 PM to 7:50 PM and 1:00 PM to 4:40 PM AKDT, respectively. The weather throughout the survey was fair, with scattered cloud cover, little to no wind, and calm waters. The Hydroball was attached to a catamaran configuration and towed behind a small boat equipped with an outboard motor at speeds below 4 knots. The Imagenex 852 SBES was configured with a maximum range of 20 m, gain of 5 dB, and pulse length of 120 micro-seconds. 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 24.1 km of riverine and 15.9 km of near-shore marine bathymetry were surveyed. Process_Date: 20220619 Process_Step: Process_Description: Data processing - Data were processed using methods described in the accompanying report. Process_Date: 2022 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 3 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -165 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .00000001 Ordinate_Resolution: .00000001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: NAD83 (2011) Ellipsoid_Name: GRS 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: NAVD88, GEOID12B Depth_Resolution: 0.002 Depth_Distance_Units: meters Depth_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: rdf2023_07_bathymetric_data.csv, rdf2023_07_bathymetric_data-dictionary.csv Entity_Type_Definition: 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. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: bathymetric_data Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Contact_Instructions: Please 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. Resource_Description: RDF 2023-7 Distribution_Liability: The 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. Standard_Order_Process: Non-digital_Form: 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. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: csv Format_Version_Date: 20231103 Format_Information_Content: bathymetry Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/31005 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20231103 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Person: Simone Montayne Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Use_Constraints: If 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. Metadata_Extensions: Online_Linkage: https://dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions