Eelgrass distributions derived from a towed underwater video survey of the Nisqually River delta, 2017

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Andrew W. Stevens
Originator: Renee K. Takesue
Originator: Eric E. Grossman
Publication_Date: 20200721
Title:
Eelgrass distributions derived from a towed underwater video survey of the Nisqually River delta, 2017
Geospatial_Data_Presentation_Form: comma-delimited text
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9N9K2I1
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/P9N9K2I1
Online_Linkage:
https://www.sciencebase.gov/catalog/item/5e95ff8982ce172707f253b5
Larger_Work_Citation:
Citation_Information:
Originator: Andrew W. Stevens
Originator: Renee K. Takesue
Originator: Eric E. Grossman
Publication_Date: 2020
Title:
Eelgrass distributions and bathymetry of the Nisqually River delta, Washington
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9N9K2I1
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/P9N9K2I1
Description:
Abstract:
This portion of the USGS data release presents eelgrass distributions derived from towed underwater video surveys of the Nisqually River delta, Washington in 2017 (USGS Field Activity Number 2017-614-FA). Eelgrass data were collected from the R/V George Davidson equipped with a towed underwater video system and global navigation satellite system (GNSS) receiver. The underwater video system consisted of a Splashcam standard definition video camera connected to a Sony GV-D1000 video monitor and tape recorder. Positioning of the survey vessel was determined at 1 Hz intervals using a Trimble R7 GNSS receiver and Trimble Zephyr Model 2 antenna. The positioning data from the GNSS were encoded onto the audio track of the digital video recording using Red Hen Systems (RHS) VMS200 hardware. Underwater video data were recorded as the vessel navigated along a series of shore-perpendicular transects at speeds between 1 and 2 knots. The underwater video recording was later reviewed and the presence or absence of eelgrass was determined for each 1-s segment of video tape. These data were used to evaluate the classification of single-beam sonar data acquired during the same time period.
Purpose:
Data were obtained to document interannual changes in eelgrass distributions following the removal of a dike that restored tidal processes to over 300 ha of former freshwater wetlands on the Nisqually River delta in 2009. These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify distributions of eelgrass.
Supplemental_Information:
Additional information about the field activities from which these data were derived are available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-614-FA
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: 20170223
Ending_Date: 20170223
Currentness_Reference: ground condition at time data were collected
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Not planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.7460220
East_Bounding_Coordinate: -122.6841300
North_Bounding_Coordinate: 47.1185910
South_Bounding_Coordinate: 47.1044550
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5e95ff8982ce172707f253b5
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: aquatic vegetation
Theme_Keyword: sea-floor characteristics
Theme_Keyword: GPS measurement
Theme_Keyword: underwater photography
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: biota
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Flora
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: video observation
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: USGS Coastal Habitats in Puget Sound Project (CHIPS)
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Salish Sea
Place_Keyword: Puget Sound
Place_Keyword: Pierce County
Place_Keyword: Thurston County
Place_Keyword: Nisqually River
Place_Keyword: Billy Frank Jr Nisqually National Wildlife Refuge
Access_Constraints: none
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. This information is not intended for navigational purposes.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: PCMSC Science Data Coordinator
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
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
Native_Data_Set_Environment: MATLAB Version: 9.6.0.1214997 (R2019a)
Cross_Reference:
Citation_Information:
Originator: Ann Gibbs
Originator: Eric Grossman
Originator: Bruce Richmond
Publication_Date: 2005
Title:
Summary and preliminary interpretations of USGS cruise A-2-02-HW: Underwater video surveys collected off of Oahu, Molokai, and Maui, Hawaii June-July 2002
Geospatial_Data_Presentation_Form: comma-delimited text
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Online_Linkage: https://pubs.usgs.gov/of/2005/1244/
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report: No formal attribute accuracy tests were conducted.
Logical_Consistency_Report: All data falls within expected ranges.
Completeness_Report:
Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Positioning of the survey vessel was achieved with a global navigation satellite system (GNSS) differentially corrected with data from a single GNSS base station. The average estimated horizontal accuracy of the GNSS-derived vessel positions is 5 cm. However, horizontal offsets between the underwater video camera and the shipboard GNSS antenna, or layback, was observed during data collection. The layback of the video camera is estimated to be no greater than 15 m based on calculations for a similar camera system given in Gibbs and others, 2005.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: No formal positional accuracy tests were conducted
Lineage:
Process_Step:
Process_Description:
Eelgrass distribution data were collected from the R/V George Davidson equipped with a towed underwater video system and global navigation satellite system (GNSS) receiver. The underwater video system consisted of a Splashcam standard definition video camera connected to a Sony GV-D1000 video monitor and tape recorder. Positioning of the survey vessel was determined at 1-Hz intervals using a Trimble R7 GNSS receiver and Trimble Zephyr Model 2 antenna. The positioning data from the GNSS were encoded onto the audio track of the digital video recording using Red Hen Systems (RHS) VMS200 hardware. Underwater video data were recorded as the vessel navigated along a series of shore-perpendicular transects at speeds between 1 and 2 knots.
Process_Date: 20170223
Process_Step:
Process_Description:
The underwater video recording was reviewed and the presence or absence of eelgrass was determined for each 1-s segment of video tape. All available eelgrass distribution data from the survey were compiled into a comma-delimited text file for distribution.
Process_Date: 20200423
Process_Step:
Process_Description:
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
Process_Date: 20201019
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@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: 4470
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0000001
Longitude_Resolution: 0.0000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.01
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: Attribute Table
Entity_Type_Definition:
Table containing attribute information associated with the dataset
Entity_Type_Definition_Source: Producer defined
Attribute:
Attribute_Label: datetime_utc
Attribute_Definition:
The date and time of data collection in Coordinated Universal Time (UTC).
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 2017-02-23 17:14:45
Range_Domain_Maximum: 2017-02-23 19:36:17
Attribute_Units_of_Measure: date and time in yyyy-mmm-dd HH:MM:SS format
Attribute:
Attribute_Label: longitude
Attribute_Definition:
Longitude coordinate of data point relative to the North American Datum of 1983
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -122.7460220
Range_Domain_Maximum: -122.6841300
Attribute_Units_of_Measure: Decimal degrees
Attribute:
Attribute_Label: latitude
Attribute_Definition:
Latitude coordinate of data point relative to the North American Datum of 1983
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 47.1044550
Range_Domain_Maximum: 47.1185910
Attribute_Units_of_Measure: Decimal degrees
Attribute:
Attribute_Label: easting_m
Attribute_Definition:
East coordinate of data point relative to the North American Datum of 1983, projected in the Universal Transverse Mercator (UTM) Zone 10 North, meters, coordinate system
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 519267.23
Range_Domain_Maximum: 523965.80
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: northing_m
Attribute_Definition:
North coordinate of data point relative to the North American Datum of 1983,projected in the Universal Transverse Mercator (UTM) Zone 10 North, meters, coordinate system
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5216808.50
Range_Domain_Maximum: 5218374.68
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: tape_id
Attribute_Definition:
Numeric identifier for the physical digital-8 tape used to record the underwater video data
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 2
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: veg_flag
Attribute_Definition:
Flag that indicates the presence or absence of eelgrass at each location along the survey track
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 0
Enumerated_Domain_Value_Definition: eelgrass absent
Enumerated_Domain_Value_Definition_Source: producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: eelgrass present
Enumerated_Domain_Value_Definition_Source: producer defined
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: U.S. Geological Survey - Science Base
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
Eelgrass distribution data are available as a comma-delimited text file, along with associated FGDC-compliant metadata.
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_Version_Number: Matlab 9.6.0.1214997
Format_Specification: text
Format_Information_Content: comma-delimited text file
Transfer_Size: 0.34
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://www.sciencebase.gov/catalog/file/get/5e95ff8982ce172707f253b5?name=nq17_video.csv
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/5e95ff8982ce172707f253b5
Network_Resource_Name:
https://www.sciencebase.gov/catalog/item/5e95e18382ce172707f25313
Network_Resource_Name: https://doi.org/10.5066/P9N9K2I1
Access_Instructions:
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the eelgrass distribution data. The second link points to a landing page with all eelgrass distribution data and metadata. The third link points to a landing page for the annual survey. The fourth link points to a landing page for the entire data release.
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20201019
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: PCMSC Science Data Coordinator
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission St.
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/ScienceBase/DR_P9N9K2I1/nq17_video_metadata.html>
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