Peter Dartnell
2017
Contour--Offshore of Gaviota Map Area, California
vector digital data
https://doi.org/10.5066/F7TH8JWJ
Nadine E. Golden
2013
California State Waters Map Series Data Catalog
database
Data Series
DS 781
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/ds/781/
https://www.sciencebase.gov/arcgis/rest/services/Catalog/58a34164e4b0c82512869be3/MapServer
https://www.sciencebase.gov/arcgis/services/Catalog/58a34164e4b0c82512869be3/MapServer/WMSServer?request=GetCapabilities&service=WMS
This part of DS 781 presents data for bathymetric contours for several seafloor maps of the Offshore of Gaviota Map Area, California. The vector data file is included in "Contours_OffshoreGaviota.zip," which is accessible from https://doi.org/10.5066/F7TH8JWJ. These data accompany the pamphlet and map sheets of Johnson, S.Y., Dartnell, P., Cochrane, G.R., Hartwell, S.R., Golden, N.E., Kvitek, R.G., and Davenport, C.W. (S.Y. Johnson and S.A. Cochran, eds.), 2018, California State Waters Map Series—Offshore of Gaviota, California: U.S. Geological Survey Open-File Report 2018–1023, pamphlet 41 p., 9 sheets, scale 1:24,000, https://doi.org/10.3133/ofr20181023.
Bathymetry contours of the Offshore of Gaviota map area in southern California was generated from acoustic-bathymetry data collected largely by the U.S. Geological Survey (USGS) and by Fugro Pelagos Inc. Acoustic mapping was completed between 2007 and 2008 using a combination of 400-kHz Reson 7125, 240-kHz Reson 8101, and 100-kHz Reson 8111 multibeam echosounders, as well as a 234-kHz SEA SWATHplus bathymetric sidescan-sonar system. In addition, bathymetric-lidar data was collected in the nearshore area by the U.S. Army Corps of Engineers (USACE) Joint Lidar Bathymetry Technical Center of Expertise in 2009 and 2010. These mapping missions combine to provide continuous bathymetric data from the shoreline to beyond the limit of California's State Waters.
Bathymetric contours at 10-m intervals were generated from a modified 2-m-resolution bathymetric surface. The most continuous contour segments were preserved; smaller segments and isolated island polygons were excluded from the final output. Contours were smoothed using a polynomial approximation with exponential kernel algorithm and a tolerance value of 60 m. The contours were then clipped to the boundary of the map area.
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 bathymetric features.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
2007
2010
ground condition
none planned
-120.379699
-120.185272
34.471526
34.403154
USGS Metadata Identifier
USGS:589a22a5e4b0efcedb71a5ad
Global Change Master Directory (GCMD)
Oceans > Bathymetry/SeafloorTopography > Bathymetry
Oceans > Bathymetry/SeafloorTopography > Seafloor Topography
ISO 19115 Topic Category
geoscientificInformation
environment
oceans
imageryBaseMapsEarthCover
USGS Thesaurus
sonar methods
bathymetry measurement
bathymetry
marine geophysics
Geographic Names Information System (GNIS)
Pacific Ocean
State of California
Gaviota
Santa Barbara County
None
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 navigation purposes.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
https://www.sciencebase.gov/catalog/file/get/5898ecd9e4b0efcedb70779e?name=Contours_OffshoreGaviota.jpg&allowOpen=true
Contours of Offshore of Gaviota map area
JPEG
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.4.1.5686
Samuel Y. Johnson
Peter Dartnell
Guy R. Cochrane
Stephen R. Hartwell
Nadine E. Golden
Rikk G. Kvitek
Clifton W. Davenport
2018
California State Waters Map Series--Offshore of Gaviota, California
pamphlet and map sheets
Open-File Report
2018-1023
Reston, VA
U.S. Geological Survey
https://doi.org/10.3133/ofr20181023
Not applicable for raster data.
Unspecified
Complete
Estimated to be no less than 2 m, owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
Estimated to be no less than 20 cm, owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
Peter Dartnell
Rikk G. Kvitek
2017
Bathymetry--Offshore of Gaviota Map Area, California
GeoTiff
Data Series
DS 781
Reston, VA
U.S. Geological Survey
See metadata for ("Bathymetry_OffshoreGaviota.zip") in DS 781 for source data postprocessing/reprocessing information.
http://pubs.usgs.gov/ds/781/
digital file of gridded bathymetry data (ArcInfo GRID)
2007
2008
ground condition
DS 781
Gridded bathymetry data (1-meter).
Bathymetric contours at 10-m intervals were generated from a modified 1-m-resolution bathymetric surface. The most continuous contour segments were preserved; smaller segments and isolated island polygons were excluded from the final output. Contours were smoothed using a polynomial approximation with exponential kernel algorithm and a tolerance value of 60 m. The contours were then clipped to the boundary of the map area.
2016
Peter Dartnell
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Physical Scientist
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
USA
(831) 460-7415
(831) 427-4709
pdartnell@usgs.gov
Metadata was modified to add accompanying USGS Open-File Report to the Larger Works section. USGS Thesaurus and keywords were added. Minor typos were corrected. No data information was changed.
20180406
Susan A Cochran
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Geologist
mailing and physical address
2885 Mission Street
Santa Cruz
CA
95060-5792
USA
(831) 460-7545
scochran@usgs.gov
Information for accompanying Open-File Report was moved from secondary Larger Works section to Abstract and Cross Reference sections. Point of Contact information was updated. Details about different Network Resource Name links was given in the Access Instructions section. Phone number for Metadata Contact was corrected. No data information was changed.
20180831
Susan A Cochran
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Geologist
mailing and physical address
2885 Mission Street
Santa Cruz
CA
95060-5792
USA
(831) 460-7545
scochran@usgs.gov
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
20201019
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
String
113
Universal Transverse Mercator
10
0.9996
-123.00000
0.00000
500000.0
0.00
coordinate pair
0.01
0.01
Meters
WGS84
WGS84
6378137.00
298.257223563
Contours_OffshoreGaviota.shp
The shapefile attributes include FID - Internal Feature Number, SHAPE - feature geometry, ID - feature ID, and CONTOUR - contour depth value. The shapefile can be added to any ESRI ArcMap project.
ESRI
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
SHAPE
Feature geometry
ESRI
Polyline
ID
Unique identifier for each contour line. Value of 0 means the line segment has been generated during the smoothing process.
ESRI
6750
14150
Double
CONTOUR
Contours are lines that connect points of equal depth based on the bathymetry grid. The contour values indicate the depth value the line represents. This makes it easier to identifier features on the seafloor. 10-m intervals were generated, then the contours were clipped to the boundary of the map area. Values are negative to indicate depth below sea level.
USGS
-190
-10
Integer values -10 to -190 representing depth intervals as described above
U.S. Geological Survey - ScienceBase
mailing and physical
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
USA
1-888-275-8747
sciencebase@usgs.gov
The .zip file (Contours_OffshoreGaviota.zip) includes the .cpg, .dbf, .prj, .sbn, .sbx, .shp, and .shx files, as well as FGDC-compliant metadata for the contour layer in the Offshore of Gaviota map area, California.
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.
shapefile
ArcMap (version 10.4.1, ESRI, 2015)
Point, line, and polygon features are in shapefile format and are projected in UTM Zone 10 coordinates, with datum WGS84.
The .zip file for a shapefile includes the .cpg, .dbf, .prj, .sbn, .sbx, .shp, and .shx files, as well as FGDC-compliant metadata for the contours data layer of Offshore Gaviota, California.
WinZip
0.36
https://www.sciencebase.gov/catalog/file/get/589a22a5e4b0efcedb71a5ad?facet=Contours_OffshoreGaviota
https://doi.org/10.5066/F7TH8JWJ
https://pubs.usgs.gov/ds/781/
Data can be downloaded using the Network Resource links. The first link begins a direct download of this particular dataset. The second link goes to a landing page containing all of the data for a given map area. The third link goes to a landing page for the entire data series, which has links to all the map areas that have data.
none
The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap TIFF. Users should download the ArcGIS Project File, OffshoreGaviotaGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Offshore Gaviota" and has all the data symbolized as on the OFR map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS
20201019
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060-5792
US
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998