Bathymetry data collected from ASV operations on North Core Banks, NC in October 2022

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Jin-Si R. Over
Originator: Christopher R. Sherwood
Publication_Date: 20230328
Title:

Bathymetry data collected from ASV operations on North Core Banks, NC in October 2022

Edition: 1.0
Geospatial_Data_Presentation_Form: digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P99IV3FC

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher:

U.S. Geological Survey, Coastal and Marine Hazards and Resources Program

Online_Linkage: https://doi.org/10.5066/P99IV3FC
Online_Linkage:

https://www.sciencebase.gov/catalog/item/63af0108d34e92aad3ca5ecc

Larger_Work_Citation:

Citation_Information:

Originator: Jin-Si R. Over
Originator: Christopher R. Sherwood
Originator: Jennifer M. Cramer
Originator: Alexandra D. Evans
Originator: Sara L. Zeigler
Publication_Date: 2023
Title:

Topographic, bathymetric, multispectral, vegetation, sediment, and supporting GPS data collected on North Core Banks, Cape Lookout National Seashore, North Carolina in October 2022, U.S. Geological Survey Field Activity 2022-034-FA

Edition: 1.0
Geospatial_Data_Presentation_Form: digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P99IV3FC

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Over, J.R., Sherwood, C.R., Cramer, J.M., Evans, A.D., and Zeigler, S.L, 2023, Topographic, bathymetric, multispectral, vegetation, sediment, and supporting GPS data collected on North Core Banks, Cape Lookout National Seashore, North Carolina in October 2022, U.S. Geological Survey Field Activity 2022-034-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P99IV3FC.

Online_Linkage: https://doi.org/10.5066/P99IV3FC
Online_Linkage:

https://www.sciencebase.gov/catalog/item/63ade364d34e92aad3ca5b2c

Description:

Abstract:

These data map in high detail surficial cross-sections of North Core Banks, a barrier island in Cape Lookout National Seashore, NC, in October 2022. U.S. Geological Survey field efforts are part of an interagency agreement with the National Park Service to monitor the recovery of the island from Hurricanes Florence (2018) and Dorian (2019). Three sites of outwash, overwash, and pond formation were targeted for extensive vegetation ground-truthing, sediment samples, bathymetric mapping with a remote-controlled autonomous surface vehicle (ASV), and uncrewed aerial systems (UAS) flights to collect multispectral imagery. Five semi-permanent ground control points were also installed and surveyed to act as control for additional aerial imagery collects via plane. UAS imagery were processed in Agisoft Metashape (v. 1.8.1) with surveyed temporary ground control points to produce calibrated multispectral (red, blue, green, red edge, near infrared, and panchromatic) orthoimages and digital surface models.

Purpose:

Bathymetry data collected with the Autonomous Surface Vehicle (ASV) can be used to create bottom surface grids of the ponds.

Supplemental_Information:

For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2022034FA. Bounding coordinates represent the maximum extent of all the bathymetry data, not the individual sites. The pond-bottom elevations relative to the NAVD88 datum, which is what the digital surface models of the surrounding pond areas are in, have not been derived here. The standard calculation would be to subtract the antenna offset of the echosounder and the depth value from the vertical position of the GPS, however the vertical uncertainties and quality check of the GPS vertical positional data does not support this method. Rather, if the pond surface is assumed to be stable and the ASV did not fluctuate more than 10-20 cm from the surface of the pond then the true depth of the pond can be determined using water’s edge elevations taken from the digital surface models available in the larger work citation. Please read the rest of the metadata for more information.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20221018

Single_Date/Time:

Calendar_Date: 20221019

Currentness_Reference: Ground condition; multiple survey days.

Status:

Progress: Complete
Maintenance_and_Update_Frequency: Not planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -76.27113798
East_Bounding_Coordinate: -76.22615968
North_Bounding_Coordinate: 34.92371366
South_Bounding_Coordinate: 34.89035797

Keywords:

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: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: remote controlled boat
Theme_Keyword: Remote Sensing Coastal Change
Theme_Keyword: Hurricane Florence
Theme_Keyword: Hurricane Dorian
Theme_Keyword: Yellow Cat
Theme_Keyword: ASV
Theme_Keyword: Kogger

Theme:

Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Physical Habitats and Geomorphology

Theme:

Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: single-beam echo sounder

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: single-beam echo sounder
Theme_Keyword: bathymetry
Theme_Keyword: geospatial datasets

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: location

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:63af0108d34e92aad3ca5ecc

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Atlantic Ocean
Place_Keyword: State of North Carolina
Place_Keyword: Cape Lookout
Place_Keyword: North Core Banks

Access_Constraints: None
Use_Constraints:

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. These data are not intended for navigational use.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jin-Si R. Over
Contact_Organization:

U.S. Geological Survey, Northeast Region, Woods Hole Coastal and Marine Science Center

Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: jover@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/63af0108d34e92aad3ca5ecc?name=2022034FA_NCB_bathymetry_browse.JPG&allowOpen=true

Browse_Graphic_File_Description:

Top: USGS personnel setting up the ASV Yellow Cat for a survey. Bottom: Example echogram showing the rangefinder (red dots) and corrected bottom depth (green) in Kogger open source software.

Browse_Graphic_File_Type: JPEG

Native_Data_Set_Environment: MATLAB (v. 2020b)

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

No official QC test was performed, but all depth values from the echo-sounder are internally consistent in relation to each other. Data in very shallow water may not be as accurate due to turbulence and kicked up mud. The GPS data for the position of the ASV was collected with a Global Navigation Satellite System (GNSS) antenna in PPK mode, but no additional corrections have been made to it – it was observed that the vertical positional data collected was not consistent with where the ASV would have been on the surface of the ponds, which was estimated using the GPS data and digital surface models available in the larger work citation. Therefore we do not recommend using the vertical GPS positions of the ASV (Ellipsoid and Orthometric_height_NAVD88 attributes) to calculate the bottom of the ponds relative to a reference system.

Logical_Consistency_Report:

The files represent single beam echo-sounder bathymetry and xy trackline data collected from a small autonomous surface vehicle (ASV) built by Peter Traykovski (WHOI). The CSV files contain edited depth values from the raw Kogger SONAR 2D-BASE combined with ASV relative positions collected using a GNSS receiver (EMLID Reach M2) mounted on the ASV. The raw Kogger sonar data file is also provided so the echogram can be viewed. The CSV file is a cleaned derivative of the raw data.

Completeness_Report:

All collected survey line data were edited for erroneous soundings before being incorporated into the final bathymetric dataset. The CSV of trackline and echosounder values has been edited to remove returns at the beginning and end of the survey when the ASV was out of the water. Values were also removed by visualization of the data in the KoggerApp (v. 0.8 available for free here https://github.com/koggertech/KoggerApp) and points that deviated from the best estimated surface were not included in the CSV file.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Navigation information was acquired from the GNSS receiver in PPK mode with a Multi-band GNSS antenna without further corrections because no base position was recorded. The receiver only managed to obtain a quality level of “single”, which is accurate on the meter-level or better. The horizontal standard deviations (STDV) from the coordinate origin are provided in both the north-south and east-west direction. The average north-south STDV for New Pond 0 (NP0), New Pond 1 (NP1), and New Pond 3 (NP3) was 0.074 m, 0.077 m, and 0.076 m, respectively. The average east-west STDV for NP0, NP1, and NP3 was 0.082 m, 0.096 m, and 0.082 m, respectively. When plotted, the xy positions line up well within the ponds, i.e., we have no reason to believe the positions are meters off from where the ASV actually was.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

The location information was acquired from the GNSS receiver (Emlid Reach) in PPK mode with a Multi-band GNSS antenna. The receiver only managed to obtain a quality level of “single”, which is accurate on the meter-level or better. The vertical standard deviations from the coordinate origin are provided; the average up-down STDV for NP0, NP1, and NP3 was 0.183 m, 0.173 m, and 0.188 m, respectively. The values, exported in NAD83(2011) ellipsoid and as NAVD88 geoid 18 values, do not make logistical sense for where the ASV was located on the water, which should be a relatively smooth and consistent value due to lack of waves and general stability of the boat – the vertical values do not reflect this and thus should be used with caution. However, the navigational accuracies effect the general location of the ASV and do not represent the accuracy of the derived bathymetric soundings. The vertical resolution of the echosounder for 100 Hz transmit frequencies at 5 or less meters is 1 centimeter, thus the depth values provided are more accurate than the vertical position of the boat at the time of the sounding collection.

Lineage:

Process_Step:

Process_Description:

The single-beam bathymetry data were collected by launching the ASV Yellow Cat into the water from the edge of the pond. Yellow Cat is equipped with a Kogger Sonar 2D echosounder, which is integrated with an EMLID Reach M2 GPS receiver and GNSS antenna. The ASV is configured such that the batteries and wiring are contained in a box on top of the yellow pontoon floats and the GPS sits on top of the box directly above the echosounder to minimize xy offset, the z offset from the base of the antenna to the echosounder is 0.2 meters (see 2022034FA_NCB_bathymetry_browse.JPG). The boat was manually remote controlled near the shore by J. Over and C. Sherwood and driven around the edge of each pond before transects were done in a grid pattern attempting to maintain a constant speed – this was not always possible and obstacles were encountered below the surface, such as logs and branches, that interrupted a smooth continuous collection. The New Pond 3 site had three bodies of water – the GPS and echosounder were not turned off when the boat was carried across land. These sections were edited out of the file 2022034FA_NCB_NP3_bathymetry.csv.

Process_Date: 202210

Process_Step:

Process_Description:

The raw bathymetry data, available for download as a .KLF file was processed in the KoggerApp (v. 0.8 available for free here https://github.com/koggertech/KoggerApp) and exported as bottom depths into a CSV file. Values are positive and represent the distance from the echosounder to the bottom of the pond. The raw GPS data from the Emlid was downloaded as a .LLH file in WGS84 from the free Emlid ReachView 3 app (downloaded on October 5, 2022). No post processing was done to this file because no base position data was collected simultaneously due to an oversight. This file was opened as a simple text file and copied into Excel with columns described in the attributes section. The WGS84 latitude and longitude values were transformed to NAD83(2011) and additionally into NAD83(2011)/UTM18N + NAVD88 (m) using VDatum (ver 4.5.1 available at https://vdatum.noaa.gov/). The bathymetry and GPS data were combined and manually edited together using the KoggerApp as a reference to remove bad soundings and times when the ASV was not in the water. For each site (New Pond 0, New Pond 1, and New Pond 3), the combined GPS trackline and soundings are provided as a “bathymetry” CSV file with additional information as described in the attributes section.

Process_Date: 202212
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jin-Si R. Over
Contact_Organization:

U.S. Geological Survey, Northeast Region, Woods Hole Coastal and Marine Science Center

Contact_Position: Geographer
Contact_Address:

Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1258

Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: jover@usgs.gov

Spatial_Data_Organization_Information:

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: 58,959

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 18
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:

Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name:

North American Datum of 1983 (National Spatial Reference System 2011)

Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222101

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

Depth_System_Definition:

Depth_Datum_Name: Local surface (location of echosounder)
Depth_Resolution: 0.001
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2022034FA_NCB_NP0_bathymetry.csv
Entity_Type_Definition:

The CSV file contains the GNSS trackline data, bottom depths from the echosounder, and collection information from New Pond 0. This dataset contains 12,895 records.

Entity_Type_Definition_Source: producer defined

Attribute:

Attribute_Label: INFO
Attribute_Definition: USGS Field Activity number
Attribute_Definition_Source:

U.S. Geological Survey, Woods Hole Coastal and Marine Science Center

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2022-034-FA
Enumerated_Domain_Value_Definition: Year, ID, and Field Activity abbreviation
Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: Date
Attribute_Definition: Date at which values were taken in the format MM/DD/YYYY
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Character string

Attribute:

Attribute_Label: ID
Attribute_Definition: Unique non-consecutive point identification
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3444
Range_Domain_Maximum: 16356

Attribute:

Attribute_Label: GPS_Time_UTC
Attribute_Definition: Time of GPS data in UTC HH:MM:SS
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Character string

Attribute:

Attribute_Label: Latitude_NAD83[2011]
Attribute_Definition:

Emlid Reach M2 latitude solution of GNSS antenna position relative to NAD83(2011).

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 34.89035797
Range_Domain_Maximum: 34.89130603
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: Longitude_NAD83[2011]
Attribute_Definition:

Emlid Reach M2 longitude solution of GNSS antenna position relative to NAD83(2011).

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -76.27113798
Range_Domain_Maximum: -76.27018723
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: GPS_Ellipsoid
Attribute_Definition:

Emlid Reach M2 solution of the GNSS antenna position relative to the NAD83(2011) ellipsoid. Positive values are above the ellipsoid.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -39.607
Range_Domain_Maximum: -34.971
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Northing_UTM18N
Attribute_Definition:

Emlid Reach M2 GNSS antenna Y-coordinates in NAD83(2011)/UTM Zone 18N.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3861620.435
Range_Domain_Maximum: 3861725.619
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Easting_UTM18N
Attribute_Definition:

Emlid Reach M2 GNSS antenna X-coordinates in NAD83(2011)/UTM Zone 18N.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 383849.407
Range_Domain_Maximum: 383936.034
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_Orthometric_NAVD88
Attribute_Definition:

Emlid Reach M2 GNSS antenna Z-coordinates relative to NAVD88 using geoid 18.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.773
Range_Domain_Maximum: 2.863
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVns
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the north-south direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.059
Range_Domain_Maximum: 0.130
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVew
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the east-west direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.066
Range_Domain_Maximum: 0.120
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVud
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the up-down direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.140
Range_Domain_Maximum: 0.240
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Echo_Depth
Attribute_Definition: The corrected distance from the echosounder to the bottom.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.060
Range_Domain_Maximum: 1.140
Attribute_Units_of_Measure: meters

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2022034FA_NCB_NP1_bathymetry.csv
Entity_Type_Definition:

The CSV file contains the GNSS trackline data, bottom depths from the echosounder, and collection information from New Pond 1. This dataset contains 14,300 records.

Entity_Type_Definition_Source: producer defined

Attribute:

Attribute_Label: INFO
Attribute_Definition: USGS Field Activity number
Attribute_Definition_Source:

U.S. Geological Survey, Woods Hole Coastal and Marine Science Center

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2022-034-FA
Enumerated_Domain_Value_Definition: Year, ID, and Field Activity abbreviation
Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: Date
Attribute_Definition: Date at which values were taken in the format MM/DD/YYYY
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Character string

Attribute:

Attribute_Label: ID
Attribute_Definition: Unique non-consecutive point identification
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1144
Range_Domain_Maximum: 15449

Attribute:

Attribute_Label: GPS_Time_UTC
Attribute_Definition: Time of GPS data in UTC HH:MM:SS
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Character string

Attribute:

Attribute_Label: Latitude_NAD83[2011]
Attribute_Definition:

Emlid Reach M2 latitude solution of GNSS antenna position relative to NAD83(2011).

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 34.90115252
Range_Domain_Maximum: 34.90186637
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: Longitude_NAD83[2011]
Attribute_Definition:

Emlid Reach M2 longitude solution of GNSS antenna position relative to NAD83(2011).

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -76.25486865
Range_Domain_Maximum: -76.25398568
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: GPS_Ellipsoid
Attribute_Definition:

Emlid Reach M2 solution of the GNSS antenna position relative to the NAD83(2011) ellipsoid. Positive values are above the ellipsoid.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -39.458
Range_Domain_Maximum: -34.854
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Northing_UTM18N
Attribute_Definition:

Emlid Reach M2 GNSS antenna Y-coordinates in NAD83(2011)/UTM Zone 18N.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3862799.173
Range_Domain_Maximum: 3862878.491
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Easting_UTM18N
Attribute_Definition:

Emlid Reach M2 GNSS antenna X-coordinates in NAD83(2011)/UTM Zone 18N.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 385350.927
Range_Domain_Maximum: 385431.516
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_Orthometric_NAVD88
Attribute_Definition:

Emlid Reach M2 GNSS antenna Z-coordinates relative to NAVD88 using geoid 18.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.607
Range_Domain_Maximum: 2.997
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVns
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the north-south direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.061
Range_Domain_Maximum: 0.120
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVew
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the east-west direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.082
Range_Domain_Maximum: 0.170
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVud
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the up-down direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.140
Range_Domain_Maximum: 0.280
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Echo_Depth
Attribute_Definition: The corrected distance from the echosounder to the bottom.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.060
Range_Domain_Maximum: 2.190
Attribute_Units_of_Measure: meters

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2022034FA_NCB_NP3_bathymetry.csv
Entity_Type_Definition:

The CSV file contains the GNSS trackline data, bottom depths from the echosounder, and collection information from New Pond 3. This dataset contains 31,764 records.

Entity_Type_Definition_Source: producer defined

Attribute:

Attribute_Label: INFO
Attribute_Definition: USGS Field Activity number
Attribute_Definition_Source:

U.S. Geological Survey, Woods Hole Coastal and Marine Science Center

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2022-034-FA
Enumerated_Domain_Value_Definition: Year, ID, and Field Activity abbreviation
Enumerated_Domain_Value_Definition_Source: USGS

Attribute:

Attribute_Label: Date
Attribute_Definition: Date at which values were taken in the format MM/DD/YYYY
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Character string

Attribute:

Attribute_Label: ID
Attribute_Definition: Unique non-consecutive point identification
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 756
Range_Domain_Maximum: 34529

Attribute:

Attribute_Label: GPS_Time_UTC
Attribute_Definition: Time of GPS data in UTC HH:MM:SS
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain: Character string

Attribute:

Attribute_Label: Latitude_NAD83[2011]
Attribute_Definition:

Emlid Reach M2 latitude solution of GNSS antenna position relative to NAD83(2011).

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 34.92218556
Range_Domain_Maximum: 34.92371366
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: Longitude_NAD83[2011]
Attribute_Definition:

Emlid Reach M2 longitude solution of GNSS antenna position relative to NAD83(2011).

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -76.22746612
Range_Domain_Maximum: -76.22615968
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: GPS_Ellipsoid
Attribute_Definition:

Emlid Reach M2 solution of the GNSS antenna position relative to the NAD83(2011) ellipsoid. Positive values are above the ellipsoid.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -39.526
Range_Domain_Maximum: -34.773
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Northing_UTM18N
Attribute_Definition:

Emlid Reach M2 GNSS antenna Y-coordinates in NAD83(2011)/UTM Zone 18N.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3865101.347
Range_Domain_Maximum: 3865269.943
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Easting_UTM18N
Attribute_Definition:

Emlid Reach M2 GNSS antenna X-coordinates in NAD83(2011)/UTM Zone 18N.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 387883.096
Range_Domain_Maximum: 388003.633
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_Orthometric_NAVD88
Attribute_Definition:

Emlid Reach M2 GNSS antenna Z-coordinates relative to NAVD88 using geoid 18.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.636
Range_Domain_Maximum: 3.116
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVns
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the north-south direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.061
Range_Domain_Maximum: 0.27
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVew
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the east-west direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.064
Range_Domain_Maximum: 0.270
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: GPS_STDVud
Attribute_Definition:

GPS standard deviation from the coordinate origin value in the up-down direction.

Attribute_Definition_Source: Emlid
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.160
Range_Domain_Maximum: 0.370
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Echo_Depth
Attribute_Definition: The corrected distance from the echosounder to the bottom.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.060
Range_Domain_Maximum: 1.74
Attribute_Units_of_Measure: meters

Detailed_Description:

Entity_Type:

Entity_Type_Label:

2022034FA_NCB_NP0_kogger_raw.KLF, 2022034FA_NCB_NP1_kogger_raw.KLF, and 2022034FA_NCB_NP3_kogger_raw.KLF

Entity_Type_Definition:

The raw sonar data log files recorded from the echosounder. The files can be opened in the open source Kogger application to view the echogram, rangefinder, and post-processing points.

Entity_Type_Definition_Source: producer defined

Overview_Description:

Entity_and_Attribute_Overview:

The raw sonar files for each pond site are provided as .KLF files and clean bathymetric data are derived from the raw files and provided as CSV files. These data include echosounder depth values and GPS locations for each point.

Entity_and_Attribute_Detail_Citation: USGS Field Activity 2022-034-FA

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: mailing and physical address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225

Contact_Voice_Telephone: 1-888- 275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov

Resource_Description: Bathymetry data obtained from ASV system Yellow Cat.
Distribution_Liability:

Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: KLF
Format_Version_Number: 0.8
Format_Specification: Kogger sonar log files
Transfer_Size: 90

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/63af0108d34e92aad3ca5ecc

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/63af0108d34e92aad3ca5ecc

Network_Resource_Name: https://doi.org/10.5066/P99IV3FC

Access_Instructions:

The first link in the list above is to directly download the data (.KLF and CSVs). The second link is to the data page where files can be downloaded individually, and the third link is to the publication landing page.

Digital_Form:

Digital_Transfer_Information:

Format_Name: CSV
Format_Version_Number: Exported from Excel Office 365 16.01
Format_Information_Content: The CSV files contain trackline and echosounder data.
Transfer_Size: 6.83

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/63af0108d34e92aad3ca5ecc

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/63af0108d34e92aad3ca5ecc

Network_Resource_Name: https://doi.org/10.5066/P99IV3FC

Access_Instructions:

The first link in the list above is to directly download the data (.KLF and CSV). The second link is to the data page where files can be downloaded individually, and the third link is to the publication landing page.

Fees: None.

Technical_Prerequisites:

The KLF files can be read using the open source Kogger application (https://github.com/koggertech/KoggerApp).

Metadata_Reference_Information:

Metadata_Date: 20230328
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jin-Si R. Over
Contact_Organization:

U.S. Geological Survey, Woods Hole Coastal and Marine Science Center

Contact_Position: Geographer
Contact_Address:

Address_Type: mailing and physical
Address: U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2297
Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov
Contact_Instructions:

The metadata contact email address is a generic address in the event the person is no longer with USGS.

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/whcmsc/SB_data_release/DR_P99IV3FC/2022034FA_NCB_bathymetry_meta.html>