METADATA

(Metadata also available in Frequently-Anticipated Questions format)
Identification_Information:
Citation:
Citation_Information:
Originator: Jenna C. Hill
Originator: William C. Schwab
Originator: William W. Danforth
Publication_Date: 2001
Title:
Archive of Sidescan-Sonar Data and DGPS Navigation Data Collected During USGS Cruise SEAX 96004 New York Bight, 1 May - 9 June 1996
Series Information:
Publication_Information:
Publication_Place: Woods Hole, MA
Publisher: U.S. Geological Survey
Description:
Abstract:
This DVD-ROM contains digital high resolution sidescan-sonar data collected during USGS cruise SEAX 96004 aboard the R/V Seaward Explorer. The coverage lies along New York Bight. This DVD-ROM (Digital Versatile Disc-Read Only Memory) has been produced in accordance with the UDF DVD- ROM Standard and is therefore capable of being read on any computing platform that has appropriate DVD-ROM driver software installed. Access to the data and information contained on this DVD-ROM was developed using the HyperText Markup Language (HTML) utilized by the World Wide Web (WWW) project. Development of the DVD-ROM documentation and user interface in HTML allows a user to access the information by using a variety of WWW information browsers (i.e. NCSA Mosaic, Netscape) to facilitate browsing and locating information and data. To access the information contained on this disc with a WWW client browser, open the file 'index.htm' at the top level directory of this DVD-ROM with your selected browser. The HTML documentation is written utilizing some HTML 4.0 enhancements. The disc should be viewable by all WWW browsers but may not properly format on some older WWW browsers. Also, some links to USGS collaborators are available on this DVD-ROM. These links are only accessible if access to the Internet is available during browsing of the DVD-ROM. Software is available on this DVD-ROM for viewing and processing the individual swaths using computer systems running the UNIX operating system.
Purpose:
Beginning in 1995, the USGS, in cooperation with the US Army Corps of Engineers (USACE), New York District, began a program to generate reconnaissance maps of the sea-floor offshore of the New York-New Jersey metropolitan area, one of the most populated coastal regions of the United States. The goal of this mapping program is to provide a regional synthesis of the seafloor environment, including a description of sedimentary environments, sediment texture, seafloor morphology, and geologic history to aid in understanding the impacts of anthropogenic activities, such as ocean dumping. This mapping effort differs from previous studies of this area by obtaining digital, sidescan sonar images that cover 100 percent of the sea floor. This investigation was motivated by the need to develop an environmentally acceptable solution for the disposal of dredged material from the New York - New Jersey Port, by the need to identify potential sources of sand for renourishment of the southern shore of Long Island, and by the opportunity to develop a better understanding of the transport and long-term fate of contaminants by investigations of the present distribution of materials discharged into the New York Bight over the last 100+ years (Schwab and others, 1997). Data collected in 1996, USGS cruise SEAX 96004, augments data collected in 1995 with sidescan sonar and seismic reflection data collected within the New York Bight Apex region. This report is an archive of the sidescan-sonar data and DGPS navigation data collected in 1996.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19960501
Beginning_Time: 0000000
Ending_Date: 19960609
Ending_Time: 0000000
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.84
East_Bounding_Coordinate: -73.03
North_Bounding_Coordinate: 40.67
South_Bounding_Coordinate: 40.35
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Digital sidescan-sonar
Theme_Keyword: Raw sidescan-sonar data
Theme_Keyword: ISIS data collection system
Theme_Keyword: 40 centimeters / pixel
Theme_Keyword: high resolution
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Atlantic Ocean
Place_Keyword: New York
Place_Keyword: New Jersey
Place_Keyword: New York Bight
Place_Keyword: Long Island inner shelf
Place_Keyword: USGS
Place_Keyword: Woods Hole Field Center (WHFC)
Place_Keyword: Eastern Regional Center
Access_Constraints:
The US Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Schwab, Bill
Contact_Organization: US Geological Survey
Contact_Position: Seafloor Mapping Project
Contact_Address:
Address_Type: mailing 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
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: bschwab@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: images/fullext.jpg
Browse_Graphic_File_Description: Map of SEAX 96004 Sidescan Survey Area
Browse_Graphic_File_Type: JPEG
Data_Set_Credit: Hill, Jenna C., Schwab, William C., Danforth, William W.
Data_Quality_Information:
Logical_Consistency_Report:
This data set is from a single cruise and collection platform, therefore internally consistent.
Completeness_Report:
The following files do not exist: l2f1, l3f1, l4f1, l5f1, l6f1, l10f1, l11f1, l12f3, l94f1, l183f1
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: The ship was navigated with differential GPS
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 5-10 meters
Horizontal_Positional_Accuracy_Explanation: DGPS is assumed to be accurate within 5-10 meters
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The vertical position was local sea level and there was no correction to a datum or tides.
Lineage:
Process_Step:
Process_Description:
No processing steps or corrections have been applied to these data. The files contain "raw" field data.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Denny, Jane
Contact_Organization: US Geological Survey
Contact_Position: Seafloor Mapping Project
Contact_Address:
Address_Type: mailing 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
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 18
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: .9996
Longitude_of_Central_Meridian: -75
Latitude_of_Projection_Origin: 0
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 5
Ordinate_Resolution: 5
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298257
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: assumed sea level
Altitude_Resolution: 1
Altitude_Distance_Units: two-way travel time
Altitude_Encoding_Method: Attribute values
Depth_System_Definition:
Depth_Datum_Name: local surface (sea level)
Depth_Resolution: 1
Depth_Distance_Units: meters
Depth_Encoding_Method: Attribute values
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The data were collected using a Datasonics SIS-1000 sidescan-sonar towfish. The system emits a CHIRP (swept FM) signal from 100-113 kHz. The return signal is correlated with the calibrated outgoing signal and matched filtered to extract the signal amplitude for each data sample. The signal is digitized at the towfish and sent up the cable where it is collected and merged with bathymetry, navigation and towfish telemetry (pitch, roll) using Triton Elics International ISIS system. The collected sidescan-sonar data are stored as 16 bit values representing a 0-10 volt range.
Entity_and_Attribute_Detail_Citation: 0
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Soderberg, Nancy
Contact_Organization: US Geological Survey
Contact_Position: Data Library
Contact_Address:
Address_Type: mailing 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
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: nsoderberg@usgs.gov
Resource_Description: US Geological Survey Open-File Report 01-95 DVD-ROM
Distribution_Liability:
This Digital Versatile Disc-Read Only Memory (DVD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data published on this DVD-ROM have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Q-MIPS
Format_Version_Number: 6.69
Format_Information_Content:
Q-MIPS format contains a 2048 byte file header followed by the sidescan sonar data stream which consists of at least two channels of sidescan-sonar information and a 256 byte trailer.
File_Decompression_Technique: none
Transfer_Size: 4.2 Gb
Digital_Transfer_Option:
Offline_Option:
Recording_Format: UDF
Offline_Media: DVD-ROM
Compatibility_Information: UNIX, DOS, MAC
Fees:
available from the Denver Open-File Sales department, price varies.
Metadata_Reference_Information:
Metadata_Date: 20010214
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Denny, Jane
Contact_Organization: US Geological Survey
Contact_Position: Seafloor Mapping Group
Contact_Address:
Address_Type: mailing 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
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: jdenny@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: universal time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none
Generated by mp version 2.5.4 on Thu Mar 22 15:49:30 2001
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