Dataset Identification:
Resource Abstract:
- description: This part of DS 781 presents data for the bathymetric contours for several seafloor maps of the Offshore of Aptos
map area, California. The vector data file is included in "Contours_OffshoreAptos.zip," which is accessible from
http://dx.doi.org/10.5066/F7K35RQB. 10-m interval contours of the Offshore Aptos map area, California, were generated from
bathymetry data collected by the U.S. Geological Survey (USGS) and by California State University, Monterey Bay (CSUMB). Mapping
was completed between 2006 and 2009 using a combination of a 244-kHz Reson 8101 multibeam echosounder and a 234-kHz SEA SWATHplus
bathymetric sidescan-sonar system. The mapping missions collected bathymetry data from about the 10-m isobath to beyond the
3-nautical-mile limit of California’s State Waters. Bathymetric contours at 10-m intervals were generated from a modified
2-m bathymetric surface. The original surface was smoothed using the Focal Mean tool in ArcGIS and a circular neighborhood
with a radius of 20 to 30 meters (depending on the area). The contours were generated from this smoothed surface using the
ArcGIS Spatial Analyst Contour tool. The most continuous contour segments were preserved while smaller segments and isolated
island polygons were excluded from the final output. The contours were then clipped to the boundary of the map area.; abstract:
This part of DS 781 presents data for the bathymetric contours for several seafloor maps of the Offshore of Aptos map area,
California. The vector data file is included in "Contours_OffshoreAptos.zip," which is accessible from http://dx.doi.org/10.5066/F7K35RQB.
10-m interval contours of the Offshore Aptos map area, California, were generated from bathymetry data collected by the U.S.
Geological Survey (USGS) and by California State University, Monterey Bay (CSUMB). Mapping was completed between 2006 and
2009 using a combination of a 244-kHz Reson 8101 multibeam echosounder and a 234-kHz SEA SWATHplus bathymetric sidescan-sonar
system. The mapping missions collected bathymetry data from about the 10-m isobath to beyond the 3-nautical-mile limit of
California’s State Waters. Bathymetric contours at 10-m intervals were generated from a modified 2-m bathymetric surface.
The original surface was smoothed using the Focal Mean tool in ArcGIS and a circular neighborhood with a radius of 20 to 30
meters (depending on the area). The contours were generated from this smoothed surface using the ArcGIS Spatial Analyst Contour
tool. The most continuous contour segments were preserved while smaller segments and isolated island polygons were excluded
from the final output. The contours were then clipped to the boundary of the map area.
Citation
- Title Contours--Offshore Aptos, California.
-
- creation Date
2018-05-20T04:38:32.861683
Resource language:
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Metadata data stamp:
2018-08-06T23:52:22Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T23:52:22Z
Metadata contact
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pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
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-
- Address
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:49398aae-75e8-4bdd-8781-ab59cd8feaf5
Metadata record format is ISO19139 XML (MD_Metadata)