1997 Shotpoint Navigation at 500 Shot Intervals

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: David C. Twichell
Originator: VeeAnn A. Cross
Publication_Date: 20010716
Title: 1997 Shotpoint Navigation at 500 Shot Intervals
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Woods Hole, MA
Publisher: U.S. Geological Survey
Larger_Work_Citation:
Citation_Information:
Originator: David C. Twichell
Originator: VeeAnn A. Cross
Publication_Date: 20011000
Title:
Holocene Evolution of the Southern Washington and Northern Oregon Shelf and Coast: Geologic Discussion and GIS Data Release
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: Report 01-076
Description:
Abstract:
Two 21-day field operations were conducted in 1997 and 1998 in the estuaries and on the inner continental shelf off the northern Oregon and southern Washington coast. These cruises aboard the R/V Corliss were run in order to generate reconnaissance maps of the seafloor geology and the shallow subsurface stratigraphy using sidescan sonar and seismic-reflection mapping techniques. The 1998 cruise also collected sediment grab samples, bottom photographs, and video images to verify the sidescan-sonar imagery and to document the seafloor geology. The combination of these data with previously collected sediment sample data (Robert, 1974; Nittrouer, 1978; and Smith et. al., 1980) has been used to define the extent and lithology of shelf sediments associated with the Columbia River littoral cell. This work is one component of a larger project studying the erosion of the Washington and Oregon coast and is being coordinated by the U.S. Geological Survey and the Washington State Department of Ecology. The reason for collecting these data is to provide a regional synthesis of the offshore geology to support a wide variety of management decisions and to provide a basis for further process-oriented investigations.
Purpose:
This GIS overlay is a component of the Southwest Washington Coastal Erosion ArcView GIS database. This particular overlay represents the shotpoint navigation at 100 shot intervals for the 1997 seismic data.
Supplemental_Information:
Roberts, R.W., 1974, Marine sedimentological data of the Washington continental shelf: University of Washington, Department of Oceanography Special Report 57, 129p.

Nittrouer, C.A., 1978, The process of detrital sediment accumulation in a continental shelf environment: an examination of the Washington shelf: PhD Thesis, University of Washington, Seattle, WA. 243p.

Smith, J.M., Messmer, L.W., Phipps, J.B., Samuelson, D.F., and Schermer, E.D., 1980, Grays Harbor and Chehalis River improvements to navigation environmental studies - Grays Harbor ocean disposal study: literature review and preliminary benthic sampling: U.S. Army Corps of Engineers Internal Report.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20010716
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -124.450843
East_Bounding_Coordinate: -123.947430
North_Bounding_Coordinate: 47.341167
South_Bounding_Coordinate: 45.945039
Keywords:
Theme:
Theme_Keyword_Thesaurus: general
Theme_Keyword: Corliss
Theme_Keyword: points
Theme_Keyword: shotpoint
Theme_Keyword: navigation
Theme_Keyword: shapefile
Theme_Keyword: ArcView
Theme_Keyword: seismic
Theme_Keyword: seismic-reflection profiel
Place:
Place_Keyword_Thesaurus: general
Place_Keyword: Pacific Ocean
Place_Keyword: Washington
Place_Keyword: Oregon
Place_Keyword: WA
Place_Keyword: OR
Place_Keyword: Inner shelf off Columbia River
Place_Keyword: Columbia River Littoral Cell
Place_Keyword: Willapa Bay
Place_Keyword: Columbia River
Place_Keyword: Washington continantal shelf
Place_Keyword: Washington coastal zone
Place_Keyword: Grays Harbor
Access_Constraints: NONE.
Use_Constraints:
The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David C. Twichell
Contact_Organization: USGS
Contact_Position: Oceanographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: dtwichell@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 1; ESRI ArcCatalog 8.1.1.649

Data_Quality_Information:
Logical_Consistency_Report: Consistent.
Completeness_Report: These data are complete for this particular study.
Lineage:
Process_Step:
Process_Description:
Shot point navigation was generated from combining the few navigation points recorded with the seismic data and adding in navigation from the main navigation system. These new values were added in based on seismic file start time, the existing seismic navigation, and extrapolation based on the 0.5 sec. fire rate of the seismics. This shotpoint navigation file was then processed with an AWK script which projected the coordinates to a UTM, zone 10, NAD83 meters projection using Proj. This newly projected shotpoint navigation file was loaded into DigiRule's GeoCad program and resampled every 500 shots, maintaining the first and last shot recorded in the original file. This shotpoint file was then loaded into ArcView as an even them, converted to a shapefile, and projected to geographic coordinates using the sample extension !Projector that ships with ArcView.
Process_Date: 19980301

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 1494

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.00018
Longitude_Resolution: 0.00026
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: shot500_97g.dbf
Entity_Type_Definition: ArcView shapefile attribute table
Entity_Type_Definition_Source: ESRI
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: LINENUM
Attribute_Definition:
Field representing the seismic line this particular shotpoint belongs to.
Attribute_Definition_Source: Defined aboard ship.
Attribute_Domain_Values:
Unrepresentable_Domain: Character set
Attribute:
Attribute_Label: SHOT
Attribute_Definition: Represents the shot number along the seismic line.
Attribute_Definition_Source: Computer generated.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1
Range_Domain_Maximum: 28320
Attribute:
Attribute_Label: EASTING
Attribute_Definition: UTM, zone 10, NAD83 meters
Attribute_Definition_Source: As defined by reprojecting the geographic coordinates.
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: NORTHING
Attribute_Definition: UTM, zone 10, NAD83 meters.
Attribute_Definition_Source: As defined by reprojecting the geographic coordinates.
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: David C. Twichell
Contact_Organization: USGS
Contact_Position: Oceanographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: USA
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: dtwichell@usgs.gov
Distribution_Liability:
This Compact Disc-Read Only Memory (CD-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 for the accuracy, completeness, or usefulness of any 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 constitude or imply its endorsement, recommendation, or favoring by the United States Governemnt 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 CD-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: ARCE
Transfer_Size: 0.457
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 650
Recording_Density_Units: MBytes
Recording_Format: ISO9660 with Rock Ridge extensions
Compatibility_Information: UNIX, PC, MAC
Fees: none at this time.

Metadata_Reference_Information:
Metadata_Date: 20010810
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: USGS
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Contact_Voice_Telephone: 508-548-8700
Contact_Facsimile_Telephone: 508457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
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: URL: https://www.esri.com/metadata/esriprof80.html">http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
Metadata_Extensions:
Online_Linkage: URL:http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile

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