GNSS elevation data collected in 2024 on beaches and areas relevant to flood hazard studies in Alaska communities

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Richard M. Buzard
Originator: Li H. Erikson
Originator: Ann E. Gibbs
Originator: Alexander G. Snyder
Originator: Anita C. Engelstad
Originator: Cordell Johnson
Originator: Alexander L. Nereson
Originator: Daniel J. Nowacki
Originator: Jin-Si R. Over
Publication_Date: 20250708
Title:
GNSS elevation data collected in 2024 on beaches and areas relevant to flood hazard studies in Alaska communities
Geospatial_Data_Presentation_Form: comma-delimited text
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P13YIWKC
Publication_Information:
Publication_Place:
Pacific Coastal and Marine Science Center, Santa Cruz, California
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P13YIWKC
Larger_Work_Citation:
Citation_Information:
Originator: Li H. Erikson
Originator: Ann E. Gibbs
Originator: Richard M. Buzard
Originator: Daniel J. Nowacki
Originator: Alexander G. Snyder
Originator: Anita C. Engelstad
Originator: Cordell Johnson
Originator: Alexander L. Nereson
Originator: Jin-Si R. Over
Originator: Paul Russel
Originator: Colin Lyons
Publication_Date: 2025
Title: In situ field data, Coastal Alaska, 2023 to 2025
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P13YIWKC
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested Citation: Erikson L.H., Gibbs A.E., Buzard R.M., Nowacki D.J., Snyder A.G., Engelstad A.C., Johnson C., Nereson A.L., Over J.R., Russel, P., Lyons, C., 2025, In situ field data, Coastal Alaska, 2023 to 2025: U.S. Geological Survey data release, https://doi.org/10.5066/P13YIWKC.
Online_Linkage: https://doi.org/10.5066/ P13YIWKC
Description:
Abstract:
Elevation point data were collected in Deering, Golovin, Koyuk, Kotzebue, and Unalakleet, Alaska between June and September 2024. Coastal elevation profiles were measured at previously established locations. Other data points are categorized as base station, bathymetry, benchmark, camera calibration data, community-based monitoring profile, drainage observation, flood staff, ground control point, miscellaneous, and water level. The elevation data were collected with real-time kinematic global navigation satellite system (RTK-GNSS) equipment. Data are available in a single CSV file per community. For easting and northing coordinates, Deering, Golovin, and Kotzebue use UTM 3. Unalakleet and Koyuk use UTM 4.
Purpose:
This product was created to help advance coastal storm response and recovery in Alaskan coastal communities in the wake of the September 2022 extratropical Typhoon Merbok disaster. It is being used by the USGS to document existing conditions and support the development of dynamic flood models for more than 20 communities along the northwest coasts of Alaska. This product is intended for reuse by scientists, managers, and the general public.
Supplemental_Information:
Additional information about the field activity or activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2024-634-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2024-635-FA https://cmgds.marine.usgs.gov/fan_info.php?fan=2024-637-FA
Work was funded by Title VII of Division N in the Consolidated Appropriations Act, 2023 (Public Law 117–328) to support direct recovery and rebuilding decisions in the wake of declared disasters related to hurricanes and typhoons in 2022. For more information on these efforts, see https://www.usgs.gov/supplemental-appropriations-for-disaster-recovery-activities/typhoon-merbok-coastal-community.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20240607
Ending_Date: 20240911
Currentness_Reference: Ground condition at time data were collected
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -163.045634
East_Bounding_Coordinate: -160.784959
North_Bounding_Coordinate: 66.904291
South_Bounding_Coordinate: 63.870529
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:1299e64a-5ee3-4dfa-ac28-f1eed1b89d3c
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: beach
Theme_Keyword: shore
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Bathymetry and Elevation
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: coastal processes
Theme_Keyword: geomorphology
Theme_Keyword: topography
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: Typhoon Merbok
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: State of Alaska
Place_Keyword: Unalakleet
Place_Keyword: Koyuk
Place_Keyword: Kotzebue
Place_Keyword: Deering
Place_Keyword: Golovin
Place_Keyword: Norton Sound
Place_Keyword: Kotzebue Sound
Access_Constraints: No access constraints
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: GNSS_ElevationData_locations.png
Browse_Graphic_File_Description:
Satellite image showing the locations where elevation data were collected.
Browse_Graphic_File_Type: PNG
Native_Data_Set_Environment:
Trimble Business Center, National Geodetic Survey Online Positioning User Service (https://geodesy.noaa.gov/OPUS/)
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: No formal accuracy assessment was performed.
Logical_Consistency_Report: All data fall within expected ranges.
Completeness_Report:
Dataset is considered complete for the information presented, as described in the abstract.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal accuracies of the base stations are computed using the National Geodetic Survey Online Positioning User Service. Horizontal errors of remaining points are computed during post-processing. Horizontal errors of all points are listed in the CSV and do not exceed 0.075 m.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Vertical accuracies of the base stations are computed using the National Geodetic Survey Online Positioning User Service. Vertical errors of remaining points are computed during post-processing. Vertical errors of all points are listed in the CSV and do not exceed 0.060 m.
Lineage:
Process_Step:
Process_Description:
Elevation data were collected with two GNSS receivers using a RTK system of base and rover. The base position was post-processed, and this correction was processed across baselines to all rover positions.
Process_Date: 20240927
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Post-processed in the Universal Transverse Mercator (UTM) zones referenced to North American Datum of 1983 with National Adjustment of 2011 (NAD83 [2011]). Eastings and northings are relative to the local UTM zone. Latitude and longitude are in WGS 1984. Elevations reference the North American Vertical Datum of 1988 using corrections from GEOID12B for Alaska (NAVD 88 [GEOID12B]).
Direct_Spatial_Reference_Method: Point
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 4574
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.001
Altitude_Distance_Units: Meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: GNSS_ElevationData_metadata_CommunityName_YYYYMM.csv
Entity_Type_Definition: Coastal elevation measurements
Entity_Type_Definition_Source: Producer defined
Attribute:
Attribute_Label: Point_ID
Attribute_Definition: Unique identifying name
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Unrepresentable_Domain: Automatically generated sequential numbers
Attribute:
Attribute_Label: Easting_m_UTM
Attribute_Definition: Easting coordinate
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 397530.834
Range_Domain_Maximum: 607283.332
Attribute_Units_of_Measure: Meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Northing_m_UTM
Attribute_Definition: Northing coordinate
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 7083816.221
Range_Domain_Maximum: 7422775.023
Attribute_Units_of_Measure: Meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: UTM_Zone
Attribute_Definition: UTM zone in which location is located
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Unrepresentable_Domain: Descriptive text.
Attribute:
Attribute_Label: Elevation_m_NAVD88
Attribute_Definition: Elevation relative to NAVD88 (GEOID12B)
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.358
Range_Domain_Maximum: 51.886
Attribute_Units_of_Measure: Meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Latitude
Attribute_Definition: Latitude coordinate
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 63.870529
Range_Domain_Maximum: 66.904291
Attribute_Units_of_Measure: Decimal degrees
Attribute_Measurement_Resolution: 0.000001
Attribute:
Attribute_Label: Longitude
Attribute_Definition: Longitude coordinate
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -163.045634
Range_Domain_Maximum: -160.784959
Attribute_Units_of_Measure: Decimal degrees
Attribute_Measurement_Resolution: 0.000001
Attribute:
Attribute_Label: Horizontal_Precision_m
Attribute_Definition: Horizontal error
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.006
Range_Domain_Maximum: 0.075
Attribute_Units_of_Measure: Meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Vertical_Precision_m
Attribute_Definition: Vertical error
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.003
Range_Domain_Maximum: 0.060
Attribute_Units_of_Measure: Meters
Attribute_Measurement_Resolution: 0.001
Attribute:
Attribute_Label: Datetime_UTC
Attribute_Definition: Start date and time in UTC (month/day/year hour:minutes)
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 06-07-2024 19:23
Range_Domain_Maximum: 09-12-2024 3:36
Attribute_Units_of_Measure: MM-DD-YYYY HH:MM
Attribute:
Attribute_Label: Notes
Attribute_Definition: Description of point
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Descriptive text. Missing information is marked by NAN (not a number)
Attribute:
Attribute_Label: Profile_Line
Attribute_Definition:
Coastal elevation profile number. Where not applicable, a fill value of -9999 is used
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 102
Attribute_Units_of_Measure: dimensionless
Attribute:
Attribute_Label: Point_Category
Attribute_Definition: Descriptive text of the point category
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Base station
Enumerated_Domain_Value_Definition: the location of the GNSS-RTK survey base station
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Benchmark
Enumerated_Domain_Value_Definition: location of recovered benchmark
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Camera calibration data
Enumerated_Domain_Value_Definition: GNSS point taken to support calibration of camera system
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Community based monitoring profile
Enumerated_Domain_Value_Definition:
an elevation profile used by the community for erosion monitoring that is not a designated profile in the Alaska Coastal Profile Tool
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Drainage observation
Enumerated_Domain_Value_Definition:
GNSS point taken to support understanding of drainage, such as culverts, ditches, and bare earth elevation in dense vegetation.
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Flood staff
Enumerated_Domain_Value_Definition: location of a USGS installed flood staff.
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Ground control point (GCP)
Enumerated_Domain_Value_Definition: GNSS point taken as a control to support georeferencing
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Miscellaneous
Enumerated_Domain_Value_Definition:
GNSS point taken that does not fit into any of these categories or may not be needed.
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Profile
Enumerated_Domain_Value_Definition:
GNSS point taken along a profile as numbered in the Alaska Coastal Profile Tool.
Enumerated_Domain_Value_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Water level
Enumerated_Domain_Value_Definition:
GNSS point taken at a still water elevation at a specified time.
Enumerated_Domain_Value_Definition_Source: Producer defined
Overview_Description:
Entity_and_Attribute_Overview: The first line of the csv file is a header line.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - CMGDS
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address:
pcmsc_data@usgs.gov Resource_Description: These data are available in csv format
Distribution_Liability:
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: comma-delimited text
Format_Information_Content: CSV contains location and elevation data
File_Decompression_Technique: No compression applied.
Transfer_Size: 0.6152
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P13YIWKC
Access_Instructions:
Data can be downloaded using the Network_Resource_Name link then scrolling down to the Location-Elevation Data section.
Fees: None.
Technical_Prerequisites: The CSV data can be viewed with any text reading software.
Metadata_Reference_Information:
Metadata_Date: 20250708
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/CMGDS_DR_tool/DR_P13YIWKC/GNSS_ElevationData_metadata.html>
Generated by mp version 2.9.51 on Fri Jul 18 11:07:49 2025