Topography data from northern Monterey Bay, California, October 2014


Identification Information:
Citation:
Citation Information:
Originator: Andrew W. Stevens
Originator: Joshua B. Logan
Originator: Daniel J. Hoover
Originator: Alexander G. Snyder
Publication Date: 2017
Title: Topography data from northern Monterey Bay, California, October 2014
Geospatial Data Presentation Form: comma-delimited text
Series Information:
Series Name: data release
Issue Identification: DOI:10.5066/F76H4GCW
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/F76H4GCW
Online Linkage: https://www.sciencebase.gov/catalog/file/get/59cc2436e4b017cf314249a0?name=mb14_oct_topo.csv
Larger Work Citation:
Citation Information:
Originator: Andrew W. Stevens
Originator: Joshua B. Logan
Originator: Alexander G. Snyder
Originator: Daniel J. Hoover
Originator: Patrick L. Barnard
Originator: Jonathan A. Warrick
Publication Date: 2017
Title: Beach topography and nearshore bathymetry of northern Monterey Bay, California
Series Information:
Series Name: data release
Issue Identification: DOI:10.5066/F76H4GCW
Publication Information:
Publication Place: Santa Cruz, CA
Publisher: U.S. Geological Survey
Online Linkage: https://doi.org/10.5066/F76H4GCW
Description:
Abstract: This part of the data release presents topography data from northern Monterey Bay, California collected in October 2014. Topography data were collected on foot with survey-grade global navigation satellite system (GNSS) receivers mounted on backpacks and with an all-terrain vehicle (ATV) using a GNSS receiver mounted at a measured height above the ground.
Purpose: Data were obtained to document changes in shoreline position and coastal morphology as they relate to episodic (storms), seasonal, interannual, and longer (for example, El Nińo) processes. 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 topographic and shallow-water bathymetric features.
Supplemental Information: Additional information about the field activities from which these data were derived are available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2014-676-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: 20141020
Ending Date: 20141024
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: -122.029880
East Bounding Coordinate: -121.788990
North Bounding Coordinate: 36.978940
South Bounding Coordinate: 36.807609
Keywords:
Theme:
Theme Keyword Thesaurus: USGS Thesaurus
Theme Keyword: topography
Theme Keyword: GPS measurement
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: elevation
Theme:
Theme Keyword Thesaurus: Data Categories for Marine Planning
Theme Keyword: Bathymetry and Elevation
Theme:
Theme Keyword Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme Keyword: Global Positioning System (GPS) observations
Theme:
Theme Keyword Thesaurus: Global Change Master Directory (GCMD)
Theme Keyword: GPS (Global Positioning System)
Theme:
Theme Keyword Thesaurus: None
Theme Keyword: U.S. Geological Survey
Theme Keyword: USGS
Theme Keyword: Coastal and Marine Geology Program
Theme Keyword: CMGP
Theme Keyword: Pacific Coastal and Marine Science Center
Theme Keyword: PCMSC
Place:
Place Keyword Thesaurus: Geographic Names Information System (GNIS)
Place Keyword: Pacific Ocean
Place Keyword: Monterey Bay
Place Keyword: Monterey County
Place Keyword: Santa Cruz County
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: Andrew W. Stevens
Contact Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact Position: Oceanographer
Contact Address:
Address Type: mailing and physical
Address: 2885 Mission St.
City: Santa Cruz
State or Province: CA
Postal Code: 95060
Country: USA
Contact Voice Telephone: 831-460-7424
Contact Electronic Mail Address: astevens@usgs.gov
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: Repeatability tests were conducted across different survey platforms, but no comparisons to "true" values 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: Survey-grade positions of the survey platforms were achieved with global navigation satellite system (GNSS) receivers and a single GNSS base station. The position of the GNSS base station was derived from two static GNSS occupations on January 14 and January 16, 2014, with durations of 6 and 3 hours, respectively. The static observations were processed using the National Geodetic Survey Online Positioning User Service (OPUS) and averaged to derive the final base station coordinates relative to the North American Datum of 1983 (2011 realization). Post-processing of raw GNSS data was performed with Trimble Business Center and Waypoint Grafnav, for the backpack- and ATV- platforms, respectively. Manufacturer reported accuracy for the differentially corrected horizontal positions for the GNSS rover trajectories is 0.8 cm + 0.5 ppm. Baselines from the GNSS base station varied between 1.5 km and 29 km with a mean of 13 km, suggesting an average horizontal accuracy of about 1.5 cm. Uncertainty in the horizontal positions associated with sinking into the substrate or variable posture during data collection of the surveyors is unknown.
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: Manufacturer reported accuracy for the differentially corrected vertical positions for the GNSS rover trajectories is 1.5 cm + 1 ppm. Baselines from the GNSS base station varied between 1.5 km and 29 km with a mean of 13 km, suggesting the average vertical accuracy of topographic measurements to be about 3 cm. Uncertainty in the vertical positions associated with sinking into the substrate or variable posture during data collection of the surveyors is unknown.
Lineage:
Process Step:
Process Description: Topographic profiles were collected on foot with GNSS receivers mounted on backpacks. Prior to data collection, vertical distances between the GNSS antennas and the ground were measured using a tape measure. Hand-held data collectors were used to log raw data and display navigational information allowing surveyors to navigate survey lines spaced at 50- to 250-m intervals along the beach. Profiles were surveyed from the landward edge of the study area (either the base of a bluff, engineering structure, or just landward of the primary dune) over the beach foreshore, to wading depth on the same series of transects as nearshore bathymetric surveys that were conducted during the same time period. Additional topographic data were collected between survey lines with an all-terrain vehicle (ATV) to constrain the elevations and alongshore extent of major morphological features. Raw GNSS data were logged internally at 1-Hz intervals using a GNSS receiver mounted at a measured height above the ground.
Process Date: 20141023
Process Step:
Process Description: Positioning data from the survey platforms were post-processed to apply differential corrections from a GNSS base station with known horizontal and vertical coordinates relative to the North American Datum of 1983 (2011 realization). Post-processing of raw GNSS data was performed with Trimble Business Center and Waypoint Grafnav, for the backpack- and ATV- platforms, respectively. Orthometric elevations relative to the NAVD88 vertical datum were computed using National Geodetic Survey Geoid12a offsets. The final point data from the topographic surveyors are projected in cartesian coordinates using the Universal Transverse Mercator (UTM), Zone 10 North, meters coordinate system.
Process Date: 20150916
Process Step:
Process Description: All available topography data from the survey were compiled into a comma-delimited text file for distribution
Process Date: 20170925
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: 128043
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: North American Datum of 1983, 2011 realization
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: 0.001
Altitude 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: Date and Time (yyyy-mm-dd HH:MM:SS.FFF)
Attribute Definition: The date and time of data collection in Greenwich Mean Time (GMT).
Attribute Definition Source: Producer Defined
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 2014-10-20 19:06:05.000
Range Domain Maximum: 2014-10-24 02:06:47.000
Attribute Units of Measure: date and time in mm/dd/yyyy HH:MM:SS.FFF format
Attribute:
Attribute Label: Longitude (deg. E)
Attribute Definition: Longitude coordinate of data point relative to the North American Datum of 1983 (2011 realization)
Attribute Definition Source: Producer defined
Attribute Domain Values:
Range Domain:
Range Domain Minimum: -122.029880
Range Domain Maximum: -121.788990
Attribute Units of Measure: Decimal degrees
Attribute:
Attribute Label: Latitude (deg. N)
Attribute Definition: Latitude coordinate of data point relative to the North American Datum of 1983 (2011 realization)
Attribute Definition Source: Producer defined
Attribute Domain Values:
Range Domain:
Range Domain Minimum: 36.807609
Range Domain Maximum: 36.978940
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 (2011 realization), 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: 586373.118
Range Domain Maximum: 608020.064
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 (2011 realization), 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: 4074212.918
Range Domain Maximum: 4093062.581
Attribute Units of Measure: meters
Attribute:
Attribute Label: Ellipsoid Height (m)
Attribute Definition: Height in meters of data point with reference to the reference ellipsoid
Attribute Definition Source: Producer defined
Attribute Domain Values:
Range Domain:
Range Domain Minimum: -34.088
Range Domain Maximum: -18.050
Attribute Units of Measure: meters
Attribute:
Attribute Label: Orthometric Height (m)
Attribute Definition: Height in meters of data point with reference to the North American Vertical Datum of 1988.
Attribute Definition Source: Producer defined
Attribute Domain Values:
Range Domain:
Range Domain Minimum: -0.299
Range Domain Maximum: 15.388
Attribute Units of Measure: meters
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: Topography data are available as a comma-delimited text file (mb14_oct_topo.csv), 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 9.2.0.556344
Format Specification: text
Format Information Content: comma-delimited text file
Transfer Size: 10.26
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://www.sciencebase.gov/catalog/file/get/59cc2436e4b017cf314249a0?name=mb14_oct_topo.csv
Network Resource Name: https://doi.org/10.5066/F76H4GCW
Access Instructions: Data can be downloaded via the Internet
Fees: None
Metadata Reference Information:
Metadata Date: 20171023
Metadata Contact:
Contact Information:
Contact Person Primary:
Contact Person: Andrew W. Stevens
Contact Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact Position: Oceanographer
Contact Address:
Address Type: mailing and physical
Address: 2885 Mission St.
City: Santa Cruz
State or Province: CA
Postal Code: 95060
Country: USA
Contact Voice Telephone: 831-460-7424
Contact Electronic Mail Address: astevens@usgs.gov
Metadata Standard Name: Content Standard for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998