Identification_Information: Citation: Citation_Information: Originator: David C. Twichell Originator: VeeAnn A. Cross Publication_Date: 20010716 Publication_Time: Unknown Title: Interpreted and Uninterpreted Seismic-Reflection Profiles In HTML Format 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: These HTML files show how the data was interpreted by placing both the interpreted and uninterpreted profiles together. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19970900 Ending_Date: 19980900 Currentness_Reference: Publication Date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.450840 East_Bounding_Coordinate: -123.946770 North_Bounding_Coordinate: +47.341170 South_Bounding_Coordinate: +45.944580 Keywords: Theme: Theme_Keyword_Thesaurus: general Theme_Keyword: Corliss Theme_Keyword: html Theme_Keyword: jpeg Theme_Keyword: seismic Theme_Keyword: seismic-reflection profiles Theme_Keyword: interpretation 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 continental 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 Hold 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 Data_Quality_Information: Logical_Consistency_Report: Consistent. Completeness_Report: This data is complete for this particular study. Lineage: Process_Step: Process_Description: These images are a result of outputting CGM files from Seisworks software package. Of particular note is a problem with the scale. In some cases, the profile has a horizontal scale which should be disregarded. Once the CGM files were exported from Seisworks, they were then converted to JPEGS using the Larson cgm to jpeg converter. These files were then resampled to 1/8th their orignal size and incorporated into HTML documents. Each seismic line has both the interpreted and uninterpreted profiles in a single HTML document. Process_Date: 20001100 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: TIFF File_Decompression_Technique: No compression applied Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Capacity: Recording_Density: 650 Recording_Density_Units: MBytes Recording_Format: ISO 9600 with Rock Ridge extensions Fees: none at this time. Metadata_Reference_Information: Metadata_Date: 20010724 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 Country: USA Contact_Voice_Telephone: 508-548-8700 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998