Metadata: Identification_Information: Citation: Citation_Information: Originator: James V. Gardner Originator: University of New Hampshire Publication_Date: 2009 Title: EX0903 East Mendocino ASCII XYZ Soundings Multibeam Bathymetry Data Description: Abstract: Full coverage, processed Multibeam Bathymetry Data - Data were reduced for position, elevation, orientation, water-column sound-speed and refraction effects and are provided in a cleaned fully integrated form in ASCII longitude, latitude, depth value and ancillary raw and reduced data were provided with quality flags, indicating whether these data were rejected or deemed to be outside deliverable survey specifications. Purpose: The National Oceanic and Atmospheric Administration (NOAA), on behalf of the United States Government, has a requirement to carry out surveys of specific regions on the continental margin (slope and rise) in the U.S. Pacific Ocean in order to obtain multibeam bathymetry. These data are required to support any potential claim for extended juriSoundingsiction by the United States under United Nations Convention on the Law of the Sea (UNCLOS) Article 76. The requirement is for the collection and processing of full-coverage multibeam sonar data in water depths of approximately 2000 to 5000 m in order to precisely define the location of the 2500-m isobath and the "foot of the slope" as defined under UNCLOS Article 76. As part of their NOAA-funded research program, University of New Hampshire (UNH) researchers oversaw data acquisition, processing and archiving of the data collected during the cruise. Supplemental_Information: Information about UNH Center for Coastal and Ocean Mapping field activity are online at http://www.ccom.unh.edu/unclos/html/reports.htm. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2008-08-14 Ending_Date: 2008-09-05 Status: Progress: Complete Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -134.699997 East_Bounding_Coordinate: -130.800003 North_Bounding_Coordinate: 40.799999 South_Bounding_Coordinate: 39.599998 Bouding_Coordinate_Units: Decimal Degree Keywords: Theme: Theme_Keyword_Thesaurus: Bathymetry Theme_Keyword: Bathymetry Theme_Keyword: Multibeam Theme_Keyword: ASCII XYZ Soundings Processed soundings Theme_Keyword: Continental Slope Place: Place_Keyword: Continental Margin Place_Keyword: Pacific Ocean Place_Keyword: Foot of the Slope Place: Place_Keyword Thesaurus: Uncontrolled - Departure Place_Keyword: San Francisco, California Place: Place_Keyword Thesaurus: Uncontrolled - Arrival Place_Keyword: San Francisco, California Platform_and_Instrument_Identification: Mission_Name: EX0903 Platform_Full_Name: NOAA Ship Okeanos Explorer Instrument_Full_Name: Kongsberg Maritime Simrad EM302 Multibeam Echosounder Access_Constraints: None Use_Constraints: Please recognize the University of New Hampshire, Center for Coastal & Ocean Mapping (UNH/CCOM) as the source of this information. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: for Coastal & Ocean Mapping, University of New Hampshire Contact_Person: James V. Gardner Contact_Position: Research Professor Contact_Address: Address_Type: Mailing and Physical Address Address: Chase Ocean Engineering Lab, 24 Colovos Road City: Durham State_or_Province: NH Postal_Code: 03824 Country: USA Contact_Voice_Telephone: 603-862-3473 Contact_Facsimile_Telephone: 603-862-0839 Contact_Electronic_Mail_Address: jim.gardner@unh.edu Hours_of_Service: 9 AM - 5 PM EST Security_Classification: Unclassified Data_Set_Credit: James V. Gardner, Chief Scientist, University of New Hampshire Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: A Kongsberg Maritime Simrad EM302 30-kHz multibeam sonar was used with effective beam widths no greater than 1° x 0.5° (fore-aft x athwart ships) at -3 dB. Descriptions of the systems and offsets applied can be found within the cruise report at http://www.ccom.unh.edu/unclos/html/reports.htm. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal positioning of the vessel was determined using Differential-aided DGPS integrated into a POS/MV model 320 version 4 inertial motion unit. Positioning is accurate to better than 5 meters (at 95% confidence) during all surveying. All positioning is referenced to the WGS84 Datum. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Depth errors not determined. Lineage: Process_Step: Process_Description: Individual soundings data were edited for fliers and then merged with navigation using UNB SwathEd software. Process_Date: September May 2009 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: for Coastal & Ocean Mapping, University of New Hampshire Contact_Person: James V. Gardner Contact_Position: Research Professor Contact_Address: Address_Type: Mailing and Physical Address Address: Chase Ocean Engineering Lab, 24 Colovos Road City: Durham State_or_Province: NH Postal_Code: 03824 Country: USA Contact_Voice_Telephone: 603-862-3473 Contact_Facsimile_Telephone: 603-862-0839 Contact_Electronic_Mail_Address: jim.gardner@unh.edu Hours_of_Service: 9 AM - 5 PM EST Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: unprojected geographic Map_Projection_Parameters: Coordinate_Information: Abscissa_Resolution: 50.0 Meters Ordinate_Resolution: 50.0 Meters Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: WGS84 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.00 Meters Denominator_of_Flattening_Ratio: 0.003352811 Meters Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Instantaneous Sea Level Depth_Resolution: Better than 1% of Water Depth Depth_Distance_Units: Meters Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: for Coastal & Ocean Mapping, University of New Hampshire Contact_Person: James V. Gardner Contact_Position: Research Professor Contact_Address: Address_Type: Mailing and Physical Address Address: Chase Ocean Engineering Lab, 24 Colovos Road City: Durham State_or_Province: NH Postal_Code: 03824 Country: USA Contact_Voice_Telephone: 603-862-3473 Contact_Facsimile_Telephone: 603-862-0839 Contact_Electronic_Mail_Address: jim.gardner@unh.edu Hours_of_Service: 9 AM - 5 PM EST Distribution_Liability: These data not intended for navigational purposes. These data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the University of New Hampshire nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ASCII XYZ Soundings File_Decompression_Technique: Winzip Transfer_Size: 38.971 MB Metadata_Reference_Information: Metadata_Date: 2009 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: for Coastal & Ocean Mapping, University of New Hampshire Contact_Person: James V. Gardner Contact_Position: Research Professor Contact_Address: Address_Type: Mailing and Physical Address Address: Chase Ocean Engineering Lab, 24 Colovos Road City: Durham State_or_Province: NH Postal_Code: 03824 Country: USA Contact_Voice_Telephone: 603-862-3473 Contact_Facsimile_Telephone: 603-862-0839 Contact_Electronic_Mail_Address: jim.gardner@unh.edu Hours_of_Service: 9 AM - 5 PM EST Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: Universal Time Metadata_Security_Information: Metadata_Security_Classification: Unclassified