Identification_Information:

Citation: La Jolla Side Scan Sonar- Seafloor Mapping Lab, California State University Monterey Bay

Citation_Information:

Title: lj_sssmosaic50cm.tif

Geospatial_Data_Presentation_Form: remote-sensing image

Description:

Abstract: Information produced from this project contributes new seafloor images and maps that will be used to assess regional geology and characterize habitats critical to fisheries management and planning of Marine Protected Areas (MPAs), as required by Federal mandates stated in the Magnunson-Stevens Fishery Conservation and Management Act and Sustainable Fisheries Act. Seafloor mapping effort was focused on priority areas outlined by multi-agency participants of the California Marine Habitat Task Force (CMHTF) Strategic Planning Meeting (1/20-21/2000).

Purpose: These data are presented as part of a program objective to identify, quantify and synthesize existing information critical to the understanding of the linkage between fisheries and habitats. Before regional exploration and site specific studies are undertake in regard to Essential Fish Habitats (EFH), all possible data that can be used to characterize substrate of EFH should be examined and, where possible, used to delineate habitat. To complete this goal we identified, catalogued, digitized, re-interpreted, and archived proprietary industry data including side scan sonar mosaics, subbottom seismic profiles and bathymetry not previously available to the general scientific community for the purpose of providing critical marine habitat maps of the California margin. In areas where industry data did not overlap the recommendations of the CMHFT, the CSUMB state-of-the-art seafloor mapping facility acquired and processed new data.

Supplemental_Information: 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: 10/06/01

Time_of_Day: unknown

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -117.321193

East_Bounding_Coordinate: -117.250796

North_Bounding_Coordinate: 32.947190

South_Bounding_Coordinate: 32.849969

In projected or local coordinates:

Left_Bounding_Coordinate: 469977.52

Right_Bounding_Coordinate: 476532.09

Top_Bounding_Coordinate: 3645460.45

Bottom_Bounding_Coordinate: 36344700.34

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

Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.2.0.700

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: 7/31/02

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Pat Iampietro

Contact_Organization: Seafloor Mapping Lab, California State University Monterey Bay

Contact_Position: Project Manager, Chief Hydrographer

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_Voice_Telephone: (831) 582-4214

Contact_Facsimile_Telephone: (831) 582-3073

Contact_Electronic_Mail_Address: pat_iampietro@monterey.edu

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\carrie\LOCALS~1\Temp\xml17E.tmp

Cloud_Cover: 0

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Pixel

Row_Count: 21520

Column_Count: 13108

Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 10

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -123.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 0.500043

Ordinate_Resolution: 0.500005

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984

Ellipsoid_Name: WGS_1984

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257224

Metadata_Reference_Information:

Metadata_Date: 20020908

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

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: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification: Unclassified

Metadata_Extensions:

Online_Linkage: http://www.esri.com/metadata/esriprof80.html

Profile_Name: ESRI Metadata Profile