Identification Information:

Citation:

Citation Information:

Title: SBIMosaic1of3

Description:

Abstract: Geophysical techniques that help identify and define large-scale marine benthic features are valuable in appraising essential habitats of marine benthic fish assemblages. Interpretations and verification of sidescan sonar, swath bathymetry, and backscatter imagery are useful tools for characterizing these habitats. Bathymetric and backscatter (sidescan) data were collected for the California Department of Fish and Game by the Seafloor Mapping Lab at California State University, Monterey Bay using a Reson 8101 multibeam echosounder.

Purpose: To collect and process bathymetric and backscatter (sidescan sonar) data for marine habitat classification.

Supplemental Information: This file contains mosaicked backscatter imagery from CSUMB multibeam surveys, in GeoTiff format. Data Acquisition: Bathymetric and backscatter (sidescan) data were collected aboard the R/V MacGinnite using a Reson 8101 multibeam echosounder. Differential GPS (DGPS) position data were generated by a Trimble 4700 GPS with differential corrections provided by a Trimble ProBeacon receiver. A TSS HDMS heading and motion sensor provided heave, pitch, heading, and roll data. Coastal Oceanographics Hypack software was used for survey design and execution. All raw data were logged using a Triton-Elics International (TEI) Isis data acquisition system. Water column sound velocity profiles collected using an AML SV+ sound velocity profiler.

Time Period of Content:

Time Period Information:

Single Date/Time:

Calendar Date: 3/31/2001

Currentness Reference: ground condition

Status:

Progress: Complete

Maintenance and Update Frequency: None planned

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -119.03243309248

East Bounding Coordinate: -119.003093022922

North Bounding Coordinate: 33.5159918654485

South Bounding Coordinate: 33.4473817705332

Keywords:

Theme:

Theme Keyword Thesaurus: Multibeam Projects

Theme Keyword: Backscatter

Theme Keyword: Multibeam

Theme Keyword: Bathymetry

Theme Keyword: Habitat

Theme Keyword: Seafloor

Theme Keyword: Sidescan sonar

Theme Keyword: GeoTiff

Theme Keyword: Contour

Theme Keyword: Slope

Theme Keyword: Hydrographic

Theme Keyword: Sound velocity

Theme Keyword: GPS

Access Constraints: To be determined by the Seafloor Mapping Lab at California State University Monterey Bay and contractor.

Use Constraints: To be determined by the Seafloor Mapping Lab at California State University Monterey Bay and contractor.

Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: Seafloor Mapping Lab, California State University Monterey Bay

Contact Address:

Address Type: mailing address

Address: California State University Monterey Bay, Institute for Earth Systems Science and Policy,100 Campus Center, Bldg 46A

City: Seaside

State or Province: California

Postal Code: 93955

Country: USA

Contact Voice Telephone: (831) 582-3529

Contact Facsimile Telephone: (831) 582-3073

Contact Electronic Mail Address: rikk_kvitek@monterey.edu

Data Set Credit: Digital data processed by Seafloor Mapping Lab at California State University Monterey Bay

Data Quality Information:

Lineage:

Process Step:

Process Description: Digital processing and mosaicking of sidescan data was accomplished using the Isis Sonar and Delph Map software packages (Triton-Elics International, Watsonville, CA) and TNT Mips GIS software (Microimages, Inc., Lincoln, NE). Individual trackline files were replayed and bottom tracking of the sonar was supervised to aid in proper slant-range correction. Line files were snipped to remove portions with poor imagery from the beginning and/or end of the trackline. Tracklines were the slant-range and layback corrected and the position data for each line was smoothed using a speed filter. Each line was then gridded, georeferenced and exported from Isis Sonar/Delph Map in GeoTIFF format (0.20m pixel size, UTM Zone 10 or 11, WGS84). Individual trackline Tiff images were imported into TNT Mips GIS software and areas of poor image quality were extracted and removed. Individual tracklines were then overlaid to produce a mosaic image. Geotiffs were exported from TNT Mips at 0.20m resolution.

Process Date: 3/31/01

Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Jerry Brantner

Contact Organization: Seafloor Mapping Lab, California State University Monterey Bay

Contact Position: Sidescan Sonar Project Manager, Hydrographic Surveyor

Contact Address:

Address Type: mailing and physical address

Address: California State University Monterey Bay, Institute for Earth Systems Science and Policy,100 Campus Center, Bldg 46A

City: Seaside

State or Province: California

Postal Code: 93955

Country: USA

Contact Facsimile Telephone: (831) 582-3073

Contact Electronic Mail Address: jeremiah_brantner@monterey.edu

Cloud Cover: 0

Spatial Data Organization Information:

Spatial Reference Information:

Horizontal Coordinate System Definition:

Planar:

Grid Coordinate System:

Grid Coordinate System Name: Universal Transverse Mercator 1983

Universal Transverse Mercator:

UTM Zone Number: 11

Transverse Mercator:

Scale Factor at Central Meridian: 0.9996

Longitude of Central Meridian: -117

Latitude of Projection Origin: 0

False Easting: 500000

False Northing: 0

Planar Coordinate Information:

Planar Coordinate Encoding Method: Coordinate Pair

Coordinate Representation:

Abscissa Resolution: 0

Ordinate Resolution: 0

Planar Distance Units: m

Geodetic Model:

Horizontal Datum Name: WGS84

Ellipsoid Name: WGS84

Semi-major Axis: 6378137

Denominator of Flattening Ratio: 298.257223563

Metadata Reference Information:

Metadata Date: 3/31/2001

Metadata Review Date:

Metadata Future Review Date:

Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: Carrie Bretz

Contact Organization: Seafloor Mapping Lab, California State University Monterey Bay

Contact Position: GIS Analyst and Metadata Manager, Geology Map Series Project Manager

Contact Address:

Address Type: mailing and physical address

Address: California State University Monterey Bay, Institute for Earth Systems Science and Policy,100 Campus Center, Bldg 46A

City: Seaside

State or Province: CA

Postal Code: 93955

Country: USA

Contact Voice Telephone: 831-582-4197

Contact Facsimile Telephone: 831-582-3073

Contact Electronic Mail Address: carrie_bretz@monterey.edu

Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata Standard Version: 2.0

Metadata Access Constraints: None

Metadata Use Constraints: None

Metadata Security Information:

Metadata Security Classification: Unclassified