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