Metadata: Identification_Information: Citation: Citation_Information: Originator: Twichell, Dave Publication_Date: 1998 Title: USGS Seafloor Mapping CORLISS 98014 Seismic Data Series_Information: Series_Name: Open-File Report Issue_Identification: 1999-307 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: The publication is currently not online, so the online link is to the field activity page. Online_Linkage: https://doi.org/10.3133/ofr99307 Online_Linkage: https://cmgds.marine.usgs.gov/fan_info.php?fan=1998-014-FA Larger_Work_Citation: Citation_Information: Originator: VeeAnn A. Cross Originator: David C. Twichell Originator: Kenneth F. Parolski Publication_Date: 1998 Title: Archive of Seismic Reflection Data Collected Aboard RV CORLISS Cruise CRLS98014 in the Columbia River Estuary, Willapa Bay, and off Southern Washington Inner Continental Shelf Series_Information: Series_Name: Open-File Report Issue_Identification: 1999-307 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication is a 3 CD-ROM set that is currently not available online. Description: Abstract: This CD-ROM contains digital high resolution seismic-reflection and bathymetric data collected during the USGS CORLISS 98014 cruise during Aug. 25 to Sept. 15, 1998.  The study area covers the Columbia River estuary, Willapa Bay, and the inner shelf off southern Washington.  The seismic-reflection data are stored as SEG-Y standard format that can be read and manipulated by most seismic processing software.  Much of the information specific to the data are contained in the headers of the SEG-Y format files.  The file system format is ISO 9660 Romeo which can be read with Windows 95/98, Windows NT, Unix, and Macintosh operating systems with the appropriate CD-ROM driver software installed.  The navigation and bathymetric data are stored as an ASCII file with the navigation and depth information logged mostly at a 10 second interval.   Blatantly bad bathymetric values were replaced with a value of 9999.  Depths are presented in meters from the sea surface (assuming a speed of sound in water of 1450 m/sec).  Both raw and tidally corrected depths are present in the navigation file. Purpose: A 21-day field operation was conducted during August and September, 1998 in the estuaries and on the inner continental shelf off the northern Oregon and southern Washington coast to generate reconnaissance maps of the seafloor geology and the shallow subsurface stratigraphy.  Sidescan sonar data were collected on the innermost shelf to document changes to the sea floor since 1997.  Sediment samples, bottom photographs, and video images were collected to document the sea floor geology.   Seismic-reflection profiles were collected to fill in gaps in the 1997 shelf-mapping program and to extend the framework geology from the shelf into the estuaries.  The Columbia River has provided huge amounts of sediment to this shelf during the Holocene transgression.  Previous studies have mapped the distribution and thickness of this modern deposit on the middle and outer shelf (Nittrouer and Sternberg, 1981; Wolf and others, 1997), however, its distribution on the inner shelf and its link to the adjacent estuarine systems were not as clearly understood because of incomplete data coverage in these areas.  Anthropogenic activity within the Columbia River drainage basin (agriculture, logging, construction of dams, and dredging of the estuary mouth) may have altered the sediment discharge from the river which, in turn, may be affecting sediment distribution on the shelf and in adjacent coastal environments.  The seismic-reflection data in concert with the sidescan-sonar imagery and sediment samples will provide an overall synthesis of the seafloor environment including the Holocene stratal geometry, the distribution of different sediment types, the distribution of mobile bedforms, outcrops of Pleistocene and older strata, and the locations of faults.  The goal of this project 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.  The project is conducted cooperatively with the Washington State Department of Ecology and several universities including Portland State University, University of Wisconsin Eau Clair, University College of the Fraser Valley, Grays Harbor College, University of South Florida, and Oregon State University. Entity_and_Attribute_Detail_Citation Nittrouer, C.A., and Sternberg, R.W., 1981, The formation of sedimentary strata in an allochthonous shelf environment:  the Washington continental shelf:  Marine Geology, V. 42, p. 201-232. Wolf, S.C., Hamer, M.R., and McCrory, P.A., 1997, Quaternary geologic investigations of the Continental Shelf offshore southern Washington and northern Oregon:  U.S. Geological Survey Open-File Report 97-67. Supplemental_Information: For more information on the seismic surveys see https://cmgds.marine.usgs.gov/fan_info.php?fan=1998-014-FA These data are also available via GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean (http://www.virtualocean.org/) earth science exploration and visualization applications. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19980828 Beginning_Time: 1443 GMT Ending_Date: 19980916 Ending_Time: 1843 GMT Currentness_Reference: publication date Status: Progress: In work Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -124.5 East_Bounding_Coordinate: -123.25 North_Bounding_Coordinate: 47.2 South_Bounding_Coordinate: 46.0 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:4defcf5f-74d0-44a4-a0f4-1e6f8357fda0 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: seismic reflection Theme_Keyword: SEG-Y Theme_Keyword: Boomer Theme_Keyword: Sparker Theme_Keyword: Geopulse Theme_Keyword: 3.5 kHz Theme_Keyword: ISO 9660 Romeo CD-ROM Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: distributions Theme_Keyword: substrate Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords Theme_Keyword: seismic reflection profiling Theme_Keyword: marine geophysics Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: seismic reflection methods Theme_Keyword: sub-bottom profiling Theme_Keyword: marine geophysics Place: Place_Keyword_Thesaurus: None Place_Keyword: Pacific Ocean Place_Keyword: Washington Place_Keyword: Oregon Place_Keyword: WA Place_Keyword: OR Place_Keyword: Inner shelf off southern Washington Place_Keyword: Willapa Bay Place_Keyword: Columbia River Estuary Access_Constraints: none Use_Constraints: none Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Twichell, Dave Contact_Organization: U.S. Geological Survey Contact_Position: Seafloor Mapping Project Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Woods Hole Field Center 384 Woods Hole Road Quissett Campus 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: dtwichell@usgs.gov Data_Set_Credit: Seafloor Mapping Group Native_Data_Set_Environment: Elics compressed format Data_Quality_Information: Logical_Consistency_Report: The SEG-Y files were plotted in the field using SEISMIC-UNIX seismic processing software Completeness_Report: archive of SEG-Y format seismic data Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The ship was navigated with Differential and P-CODE GPS. P-CODE GPS is assumed to be accurate within 10-20 meters while Differential GPS is assumed to be accurate within 10m. Assumed accuracy 10 to 20 meters. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical position was local sea level and there was no correction to a datum, nor was there a correction for the tide Lineage: Process_Step: Process_Description: The subbottom data were recorded on the Delph Elics data logging system in Elics compressed format.  The data were converted from this compressed format to SEG-Y format using the conversion program provided on the Delph Elics system.  The boomer/sparker data were filtered with a bandpass of 200-3000 Hz at the acquisition step along with a 3-9 dB gain.   The sound source for lines 17, 20-24, and 30-32 was a sparker system.  In the fresh water of the Columbia River (lines 18, 19, and 25-28) a Huntec electro-mechanical 'boomer' system was used as the sound source.  A Benthos hydrophone array was used on all the lines for the acquisition. Process_Date: 199809 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Twichell, Dave. Contact_Organization: U.S. Geological Survey Contact_Position: Seafloor Mapping Project Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Woods Hole Field Center 384 Woods Hole Road Quissett Campus 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: dtwichell@usgs.gov Process_Step: Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Process_Date: 20170124 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Alan O. Allwardt Contact_Position: Contractor -- Information Specialist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7551 Contact_Facsimile_Telephone: 831-427-4748 Contact_Electronic_Mail_Address: aallwardt@usgs.gov Process_Step: Process_Description: The original metadata file was extracted from the CD-ROM publication. The publication is not available online. The original metadata was only available in HTML format, so the HTML was converted to TEXT using Microsoft Word, and then CNS v. 2.8.6 (chew and spit) metadata pre-parse was used to further format the metadata. Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Added the link to the field activity page in the Identification section. Added online links to the data in the Distribution section. The information in the quantitative horizontal accuracy assessment was moved to the horizontal positional accuracy report. Had to move the coordinate system units to the entity and attribute overview because the seconds of arc are not accepted by the CSDGM format. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Process_Date: 20171206 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Crossref DOI link was added as the first link in the metadata. Process_Date: 20191118 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200908 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Indirect_Spatial_Reference: Horizontal X and Y are in seconds of arc from Greenwich and the Equator for each shot location and are located in the SEG-Y trace headers. Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 10 Longitude_Resolution: 10 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 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 acquired using a Huntec electro-mechanical sound source or a sparker source system powered by an ORE Geopulse power supply and a Benthos streamer as the receiver.  Seismic data were logged digitally with the Delph Elics seismic acquisition system.  The field data were reformatted to SEG-Y format and were checked for quality with the SEISMIC UNIX seismic processing software and are archived on this CD-ROM.  The SEG-Y format is described in detail by Barry and others (1975).  The files are standard 16-bit unsigned integer SEG-Y format.  The SEG-Y files consist of shot files with one trace per shot.  There are 3000 samples per trace.  The sample interval is 83 microsec. which resulted in a trace length of 250 ms.  The boomer or sparker was fired at a rate of 0.5 seconds.  The 3.5 kHz data were collected concurrently with the boomer/sparker data and logged on the Delph Elics seismic acquisition system.  These files are in standard 16-bit unsigned integer SEG-Y format consisting of one trace per shot.  There are 1200 samples per trace at a sample interval of 83 microsecs.  The sample record length was 100 ms with the firing rate set at 0.25 seconds. The navigation in the header is actually in seconds of arc, but the CSDGM format doesn't accept that as a valid unit. Entity_and_Attribute_Detail_Citation: Barry, K.M., Cavers, D.A., and Kneale, C.W., 1975, Recommended standards for digital tape formats, in Digital Tape Standards; Society of Exploration Geophysicists ["Recommended standards for digital tape formats" reprinted from Geophysics, v. 32, p. 1073 - 1084; v. 37, p. 36-44; v. 40, p. 344 - 352.] p. 22 - 30. Cohen, J.K., and Stockwell, Jr. J.W., 1997, CWP/SU:  Seismic Unix Release 1.6: a free package for seismic research and processing, Center for Wave Phenomena, Colorado School of Mines. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Soderberg, Nancy Contact_Organization: U.S. Geological Survey Contact_Position: Data Library Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Woods Hole Field Center 384 Woods Hole Road Quissett Campus 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: U.S. Geological Survey CD-ROM Open-File Report Data Archive 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 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 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: SEG-Y Format_Information_Content: Link to folders containing SEG-Y data. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://cmgds.marine.usgs.gov/data/1998_014_FA_b/ Network_Resource_Name: http://cmgds.marine.usgs.gov/data/1998_014_FA_p/ Network_Resource_Name: http://cmgds.marine.usgs.gov/data/1998_014_FA_s/ Access_Instructions: Although the publication is not currently available online, the links are to another source of the data. The first link is to the boomer SEG-Y data, second link is to the 3.5 kHz profile SEG-Y data, and the third link is to the sparker SEG-Y data. Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Romeo Compatibility_Information: UNIX, Windows 95/98/NT, MAC Fees: none Metadata_Reference_Information: Metadata_Date: 20211116 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Twichell, Dave Contact_Organization: U.S. Geological Survey Contact_Position: Seafloor Mapping Group Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Woods Hole Field Center 384 Woods Hole Road Quissett Campus 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: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid. Metadata_Standard_Name: FGDC Content Standard Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: universal time Metadata_Access_Constraints: none Metadata_Use_Constraints: none