Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2013 Title: RB2003august_raw: SeaBeam raw bathymetry data files acquired in August and September 2003 aboard the Ronald H. Brown on U.S. Geological Survey Cruise 2003-032-FA from the Puerto Rico Trench region (mb41 format binary files) Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1210 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2006/1210/data/multibeam/raw_data/raw_data_RB0305/ Larger_Work_Citation: Citation_Information: Originator: Uri ten Brink Originator: William W. Danforth Originator: Christopher F. Polloni Publication_Date: 2013 Title: Final report and archive of the swath bathymetry and ancillary data collected in the Puerto Rico Trench region in 2002 and 2003 Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2006-1210 Publication_Information: Publication_Place: Woods Hole Coasttal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: suggested citation: ten Brink, U., Danforth, W.W., and Polloni, C.F., 2013, Final report and archive of the swath bathymetry and ancillary data collected in the Puerto Rico Trench region in 2002 and 2003: U.S. Geological Survey Open-File Report 2006-1210, available online at http://pubs.usgs.gov/of/2006/1210/. Online_Linkage: http://pubs.usgs.gov/of/2006/1210/ Description: Abstract: In 2002 and 2003, the U.S. Geological Survey (USGS), Woods Hole Coastal and Marine Science Center (WHCMSC), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), conducted three exploration cruises (USGS Cruise 02051, NOAA RB0208, September 24 to 30, 2002; USGS Cruise 03008, NOAA RB0303, February 18 to March 7, 2003 and USGS Cruise 03032, NOAA RB0305, August 28 to September 4, 2003). These cruises mapped for the first time the morphology of this entire tectonic plate boundary stretching from the Dominican Republic in the west to the Lesser Antilles in the east, a distance of approximately 700 kilometers (430 miles). Observations from these three exploration cruises, coupled with computer modeling and published Global Positioning System (GPS) results and earthquake focal mechanisms have provided new information that is changing the evaluation of the seismic and tsunami hazard from this plate boundary. The observations collected during these cruises also contributed to the basic understanding of the mechanisms that govern plate tectonics, in this case, the creation of the island of Puerto Rico and the deep trench north of it. Results of the sea floor mapping have been an important component of the study of tsunami and earthquake hazards to the northeastern Caribbean and the U.S. Atlantic coast off the United States. For additional information on the cruises see: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-051-FA http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-051-FA http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-051-FA Purpose: These raw data files acquired aboard the Ronald H. Brown on U.S. Geological Survey Cruise 2003-032-FA (mb41 format binary files) were collected to construct a 150-meter grid of the survey area. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030828 Ending_Date: 20030904 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.557758 East_Bounding_Coordinate: -61.662441 North_Bounding_Coordinate: 20.658342 South_Bounding_Coordinate: 16.722954 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: sea floor Theme_Keyword: sea floor mapping Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: NOAA Hydrographic Survey-Atlantic Branch Theme_Keyword: NOAA Office of Ocean Exploration Theme_Keyword: Open-File Report 2006-1210 Theme_Keyword: OFR 2006-1210 Theme_Keyword: field activity serial number 03032 Theme_Keyword: field activity number RB03-05 Theme_Keyword: NOAA Cruise RB0305 Theme_Keyword: Ronald H. Brown Theme_Keyword: SeaBeam 2112 Theme_Keyword: SeaBeam mb41 raw data Theme_Keyword: multibeam bathymetry Theme_Keyword: Field Activity 2003-032-FA Theme_Keyword: InfoBank ID B-2-03-PR Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: elevation Place: Place_Keyword_Thesaurus: General Place_Keyword: North America Place_Keyword: Atlantic Ocean Place_Keyword: Caribbean Sea Place_Keyword: Antilles Arc Place_Keyword: Puerto Rico Trench Place_Keyword: Caribbean Plate Access_Constraints: None Use_Constraints: Not to be used for navigation. Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) and National Oceanic and Atmospheric Administration (NOAA) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chris Polloni Contact_Organization: U.S. Geological Survey Contact_Position: Information Technology Specialist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2280 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: cpolloni@usgs.gov Hours_of_Service: 8:00AM to 5:00PM Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3;ESRI ArcCatalog 9.2.6.1300 Cross_Reference: Citation_Information: Originator: Uri ten Brink Originator: William W. Danforth Originator: Christopher F. Polloni Originator: Castle Eugene Parker Originator: Toshihiko Uozumi Originator: Glynn F. Williams Publication_Date: 2005 Title: Project PROBE Leg II - Final Report and Archive of Swath Bathymetric Sonar, CTD/XBT and GPS Navigation Data Collected During USGS Cruise 03008 (NOAA Cruise RB0303) Puerto Rico Trench 18 February - 7 March, 2003 Series_Information: Series_Name: Open-File Report Issue_Identification: 2004-1400 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2004/1400/ Cross_Reference: Citation_Information: Originator: Uri ten Brink Originator: Charles R. Worley Originator: Lt. Shep Smith Originator: Thomas Stepka Originator: Glynn F. Williams Publication_Date: 2006 Title: Project PROBE Leg I - Report and Archive of Multibeam Bathymetry and Acoustic Backscatter, CTD/XBT and GPS Navigation Data Collected During USGS Cruise 02051 (NOAA Cruise RB0208) Puerto Rico Trench, September 24, 2002 to September 30, 2002. Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1066 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2005/1066/ Data_Quality_Information: Logical_Consistency_Report: This is one dataset of three used to construction a bathymetry grid of the Puerto Rico Trench region. This particular dataset was collected with an apparent depth option turned on during acquisition. That option was not used during the acquisition of the companion datasets. The problem is discussed in the process step, but these data have not been corrected for the apparent depth option. No additional checks for consistency were performed on this data. Completeness_Report: All collected data were used to produce this dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: These data were navigated with Differential Global Positioning Systems (DGPS) and a P-code receiver. These systems have an estimated horizontal accuracy of to +/- 3 meters horizontally. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: These data have been corrected for vessel motion (roll, pitch, heave, yaw) and referenced to local sea level (no tide correction). The theoretical vertical resolution of the Sea Beam 2112 multibeam echosounder is 1 % of water depth, approximately 40 - 80 meters within the study area. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished Material Title: Multibeam bathymetric survey data collected by USGS in the Puerto Rico trench area, 2003 Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030828 Ending_Date: 20030904 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: SeaBeam Source_Contribution: The raw data files were collected and archived Process_Step: Process_Description: Bathymetric data were collected using a SeaBeam 2112 (12 kHz) mulitbeam echo sounding system. The system, originally used for high accuracy (SeaBeam Classic) charting of the U.S. Exclusive Economic Zone (EEZ), is capable of hydrographic charting and seafloor acoustic backscatter imaging in water depths of 50 to 11,000 meters with up to 151 beams (2 degree transmit and receive). Swath coverage varies as a function of depth, from 150 degrees at 1,000 meters, to 120 degrees at 5,000 meters, and 90 degrees at 11,000 meters, with a resolution of two degrees. The swath of coverage on the ocean floor is approximately 75% of the water depth. The system operates at an acoustic frequency of 12 kHz and uses transducer arrays that are flush-mounted on the hull in a T-shaped configuration centered on the ship's keel. The horizontal positions for soundings were acquired with several Differential Global Positioning System (DGPS) receivers and one P-Code receiver: a Trimble Centurian P-code GPS, a Magnavox MX-200 GPS, and a Northstar 941x differential GPS. Horizontal sounding positions were recorded to raw multibeam echo sounder data files via SeaBeam's Sea Survey data acquisition software. A conservative estimate of the positional accuracy of the GPS and P-Code receivers is +/- 3 meters. The data pipeline included transferring the SeaBeam MB41 raw data files from the SGI computer to a processing laptop via file transfer protocol (FTP). The raw files were stored in file directories labeled for each day collected. It was observed that these data were collected in apparent depth mode. Comparison of the present survey depth with depths obtained during cruise RB03-02 along overlapping portions of the lines, revealed that the new data were on average 100 meters shallower but that the difference was probably not constant. Despite the presence of SeaBeam engineers on board, it took 2 days to find the source of the problem. The new software version (1.2.7) that was installed on the ship in Madeira, contained an option called Apparent depth mode (see http://pubs.usgs.gov/of/2006/1210/data/multibeam/raw_data/raw_data_RB0305/L3_Trip_summary_Aug-Sep_2003.pdf ). This option was turned on as a default. The apparent depth mode option takes the true depth of each beam and calculates the vertical travel time to the sea surface using the sound velocity profile that is in use at that time of acquisition. It then multiplies the travel time by a generic constant water speed of 1500 m/s to calculate an apparent depth, which is the depth that would have been measured by a standard depth finder. The true depth can be back-calculated as follows: (1) Vertical travel time = (apparent depth-ship's draft)/1500 (2) True depth = vertical travel time*true sound velocity profile+ ship's draft, where the ship's draft is 5.6 meters. **These raw files have not been corrected for the apparent depth option. Process_Date: 2003 Source_Produced_Citation_Abbreviation: day labeled directories Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: William Danforth Contact_Organization: U.S. Geological Survey Contact_Position: Information Specialist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1589 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2274 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: bdanforth@usgs.gov Hours_of_Service: 9AM to 5PM; M- F Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 2775 Column_Count: 6976 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.25722356300003 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: local sea level Depth_Resolution: 0.1 Depth_Distance_Units: meters Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Uri ten Brink Contact_Organization: U.S. Geological Survey Contact_Position: Research Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1589 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2396 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: utenbrink@usgs.gov Hours_of_Service: 8AM to 5 PM; M-F Resource_Description: Downloadable Data: Open-File Report 2006-1210: raster grid Distribution_Liability: Neither the U.S. Government, the Department of the Interior, the U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), 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 information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: MBF_SB2100RW Format_Version_Number: 41 Format_Specification: SeaBeam Instruments series vendor format Format_Information_Content: Raw binary files in SeaBeam .mb41 format contained as individual files in folders representing days of collection. No individual file is larger than 6 MB.The data folder also contains the technical report files describing the apparent depth issue and how to correct for this problem. File_Decompression_Technique: none Transfer_Size: 6 MB Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2006/1210/data/multibeam/raw_data/raw_data_RB0305/ Network_Resource_Name: http://pubs.usgs.gov/of/2006/1210/html/catalog.htm Access_Instructions: Data may be downloaded via the World Wide Web. Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.75 Recording_Density_Units: Gbytes Recording_Format: UDF Fees: None Technical_Prerequisites: These data are available in SeaBeam MB41 raw data format. The user must have software capable of importing and processing the data. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2012 Metadata_Reference_Information: Metadata_Date: 20120430 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Chris Polloni Contact_Position: Information Technology Specialist Contact_Address: Address_Type: physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2280 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: cpolloni@usgs.gov Hours_of_Service: 8:00AM to 5:00PM; M-F Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile