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Metadata also available as FAQ, ASCII text and XML.
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Arthur Grantz, Patrick E. Hart, and Steven D. May
- Publication_Date: 2004
- Title:
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Seismic reflection and refraction data acquired in 1988, 1992,
and 1993 in the Canada Basin, Northwind Ridge, and Northwind
Basin, Arctic Ocean; USGS Open-File Report
- Geospatial_Data_Presentation_Form:
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Text report containing graphical map images and geophysical
data images (no spatial referencing).
- Online_Linkage: <http://pubs.usgs.gov/of/2004/1243/>
- Description:
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- Abstract:
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Seismic reflection and refraction data were collected in generally
ice-covered waters of the Canada Basin and the eastern part of the
Chukchi Continental Borderland of the Amerasia Basin, Arctic Ocean,
during the late summers of 1988, 1992, and 1993. The data were
acquired from a Polar class icebreaker, the U.S. Coast Guard Cutter
Polar Star, using a seismic reflection system designed by the U.S.
Geological Survey (USGS). The northernmost data extend to 78° 48' N
latitude.
In 1988, 155 km of reflection data were acquired with a prototype
system consisting of a single 195 cubic inch air gun seismic source
and a two-channel hydrophone streamer with a 150-m active section.
In 1992 and 1993, 500 and 1,900 km respectively of seismic reflection
profile data were acquired with an improved six air gun, 674 to 1303
cubic inch tuned seismic source array and the same two-channel
streamer. All data were recorded with a DFS-V digital seismic
recorder. A 12-channel streamer with a 150-m active section was also
used to record some data in 1993. Processed sections feature high
quality vertical incidence images to more than 6 km of sub-bottom
penetration in the Canada Basin.
Refraction data were acquired with U.S. Navy sonobuoys recorded
simultaneously with the seismic reflection profiles. In 1988 eight
refraction profiles were recorded with the single air gun, and in
1992 and 1993 a total of 47 refraction profiles were recorded with
the six air gun array. The sonobuoy refraction records, with offsets
up to 35 km, provide acoustic velocity information to complement the
short-offset reflection data.
The report includes trackline maps showing the location of the data,
as well as both digital data files (SEG-Y) and images (TIFF and JPEG)
of all of the profiles.
- Purpose:
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These data are intended for science researchers, policy makers,
and the general public.
- Supplemental_Information:
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Information for USGS Coastal and Marine Geology related
activities are online at: <http://walrus.wr.usgs.gov/>
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 19880801
- Ending_Date: 19931001
- Currentness_Reference: none
- Browse_Graphic:
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- Browse_Graphic_File_Name: <http://pubs.usgs.gov/of/2004/1243/rjpg/93-04rp.html>
- Browse_Graphic_File_Description: An example seismic reflection Line 93-04
- Browse_Graphic_File_Type: JPEG
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: none planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -165.00000
- East_Bounding_Coordinate: -137.00000
- North_Bounding_Coordinate: +79.00000
- South_Bounding_Coordinate: +71.00000
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus:
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NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 4.2.2
- Theme_Keyword:
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Parameters Keywords > OCEANS > MARINE SEDIMENTS > STRATIGRAPHIC SEQUENCE
- Theme_Keyword: Parameters Keywords > SOLID EARTH > ROCKS/MINERALS > SEDIMENTS
- Theme_Keyword:
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Parameters Keywords > SOLID EARTH > SEISMOLOGY > SEISMIC PROFILE
- Theme_Keyword: Platform Keywords > SHIPS
- Theme_Keyword: Instrument Keywords > AIRGUN ARRAYS
- Theme_Keyword: Instrument Keywords > GEOPHONES
- Theme_Keyword: Instrument Keywords > HYDROPHONES
- Theme_Keyword: Instrument Keywords > SONOBUOYS
- Theme_Keyword: Instrument Keywords > SEISMIC REFLECTION PROFILERS
- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: marine geology
- Theme_Keyword: seismic reflection
- Theme_Keyword: seismic refraction
- Theme_Keyword: airgun
- Theme_Keyword: sediment thickness
- Theme_Keyword: ice breaker
- Place:
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- Place_Keyword_Thesaurus:
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NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 4.2.2
- Place_Keyword: Location Keywords > ARCTIC OCEAN
- Place:
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- Place_Keyword_Thesaurus: Geographic Names Information System (GNIS), USGS, Reston, VA
- Place_Keyword: Arctic Ocean
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Canada Basin
- Place_Keyword: Chukchi Basin
- Place_Keyword: Chukchi Plateau
- Place_Keyword: Northwind Ridge
- Place_Keyword: Amerasian Basin
- Place_Keyword: Alaska
- Place_Keyword: USA
- Access_Constraints: None
- Use_Constraints:
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These data are not intended for navigational purposes.
Please recognize the U.S. Geological Survey (USGS) as the source
of this information.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Patrick E. Hart
- Contact_Organization:
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United States Geological Survey (USGS)
Coastal and Marine Geology (CMG)
- Contact_Position: Geophysicist
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: USGS, MailStop 999, 345 Middlefield Road
- City: Menlo Park
- State_or_Province: CA
- Postal_Code: 94025-3561
- Country: USA
- Contact_Voice_Telephone: (650) 329-5160
- Contact_Electronic_Mail_Address: phart@usgs.gov
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report: Data have not been independently verified.
- Logical_Consistency_Report: Undetermined
- Completeness_Report: Reference the full report for a description of data coverage.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report: 100.0 meters
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report: Depths are referenced to sea level
- Lineage:
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- Process_Step:
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- Process_Description:
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Refer to report section "Data processing and archive" for full details of
geophysical data processing sequences
- Process_Date: 2004
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Patrick E. Hart
- Contact_Organization:
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United States Geological Survey (USGS)
Coastal and Marine Geology (CMG)
- Contact_Position: Geophysicist
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: USGS, MailStop 999, 345 Middlefield Road
- City: Menlo Park
- State_or_Province: CA
- Postal_Code: 94025-3561
- Country: USA
- Contact_Voice_Telephone: (650) 329-5160
- Contact_Electronic_Mail_Address: phart@usgs.gov
- Process_Step:
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- Process_Description:
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Plotted tracklines of seismic reflection profiles using GMT to create Figure 4.
Converted plot to Adobe SVG Viewer file to allow mouse over trackline details
and links to profile displays.
- Process_Date: 2004
- Process_Step:
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- Process_Description:
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Plotted tracklines of sonobuoy refraction profiles using GMT
to create Figure 5. Converted plot to Adobe SVG Viewer file to
allow mouse over trackline details and links to profile displays.
- Process_Date: 2004
- Process_Step:
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- Process_Description:
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Plotted shot point map of cruises using GMT to create Figure 10.
Broke area into three sections for better viewing. Converted
plots to Adobe Acrobat PDF files for zooming in on sections.
- Process_Date: 2004
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Jon R. Childs
- Contact_Organization:
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United States Geological Survey (USGS)
Coastal and Marine Geology (CMG)
- Contact_Position: Geophysicist
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: USGS, MailStop 999, 345 Middlefield Road
- City: Menlo Park
- State_or_Province: CA
- Postal_Code: 94025-3561
- Country: USA
- Contact_Voice_Telephone: (650) 329-5195
- Contact_Electronic_Mail_Address: jchilds@usgs.gov
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Map_Projection:
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- Map_Projection_Name: Lambert Azimuthal
- Polar_Stereographic:
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- Straight-Vertical_Longitude_from_Pole: -155.0
- Standard_Parallel: 90.0
- False_Easting: 0.0
- False_Northing: 0.0
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.00001
- Ordinate_Resolution: 0.00001
- Planar_Distance_Units: degrees
- Entity_and_Attribute_Information:
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- Overview_Description:
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- Entity_and_Attribute_Overview:
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Locations of data profiles are shown as color-coded map images
at an unspecified projection and scale. These map images are
rendered in Scalable Vector Graphics (SVG). The images of the
reflection and refraction profiles are rendered in TIFF and JPEG
image formats.
- Entity_and_Attribute_Detail_Citation: none
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization:
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United States Geological Survey (USGS)
Information Services
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: Box 25286
- City: Denver
- State_or_Province: CO
- Postal_Code: 80225
- Country: USA
- Contact_Voice_Telephone: (888)ASK-USGS
- Distribution_Liability:
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Please recognize the U.S. Geological Survey (USGS)
as the source of this information.
USGS-authored or produced data and information
are in the public domain.
Although these data have been used by the U.S. Geological
Survey, U.S. Department of the Interior, 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 U.S. Government nor any agency thereof, nor any
of their employees, 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.
Trade, firm, or product names and other references to
commercial products and services are provided for information
only and do not constitute endorsement or warranty, express
or implied, by the USGS, USDOI, or U.S. Government, as to their
suitability, content, usefulness, functioning, completeness,
or accuracy.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: TIFF, JPEG, SEG-Y, ASCII
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: <http://pubs.usgs.gov/of/2004/1243/>
- Fees: None
- Metadata_Reference_Information:
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- Metadata_Date: 20030810
- Metadata_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Jonathan R. Childs
- Contact_Organization:
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United States Geological Survey (USGS)
Coastal and Marine Geology (CMG)
- Contact_Position: Geophysicist
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: USGS, MailStop 999, 345 Middlefield Road
- City: Menlo Park
- State_or_Province: CA
- Postal_Code: 94025-3561
- Country: USA
- Contact_Voice_Telephone: (650) 329-5195
- Contact_Electronic_Mail_Address: jchilds@usgs.gov
- Metadata_Standard_Name:
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Content Standard for Digital Geospatial Metadata
("CSDGM version 2")
- Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.8.12 on Mon Jun 07 16:43:33 2004
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