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High-Resolution Seismic-Reflection Data Offshore of Dana Point, Southern California Borderland

Metadata

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Ray W. Sliter

Originator: Holy F. Ryan

Originator: Peter J. Triezenberg

Publication_Date: 2010

Title: Data Tables

Geospatial_Data_Presentation_Form: seismic reflection profile section

Larger_Work_Citation:

Citation_Information:

Originator: Ray W. Sliter

Originator: Holy F. Ryan

Originator: Peter J. Triezenberg

Publication_Date: 2010

Title:

High-Resolution Seismic Reflection Data Offshore of Dana Point, Southern California Borderland

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report

Issue_Identification: 2010-1111

Publication_Information:

Publication_Place: Menlo Park, CA

Publisher: U.S. Geological Survey

Online_Linkage: <https://pubs.usgs.gov/of/2010/1111/>

Description:

Abstract:

This report consists of high-resolution shallow seismic-reflection profile data from the offshore area between Dana Point and San Mateo Point in southern Orange and northern San Diego Counties, California. These data were acquired in 2006 using the Research Vessel Sea Explorer (USGS Field Activity ID: S-2-06-SC). The data are available in binary, TIFF and JPEG image formats. Binary data are in Society of Exploration Geologists (SEG) SEG-Y format and may be downloaded for further processing or display. Reference maps and JPEG images of the profiles may be viewed with your Web browser.

Purpose:

In September 2008, the U.S. Geological Survey (USGS) collected seismic-reflection in an area from as far north as Laguna Beach, Orange County, CA to offshore of Oceanside, San Diego County, CA (cruise S-2-06-SC, Figure 1). Reflection profiles were located to provide information on the geometric representations of offshore faults and recency of fault activity. The profiles were primarily oriented perpendicular to the shore (NE-SW) in waters depths from mid-shelf to the base of the slope. Data acquisition focused on the imaging of blind thrust faults and folds that had been proposed to lie beneath much of offshore Orange and San Diego Counties (the Oceanside fault) and the offshore Newport-Inglewood fault zone.

Supplemental_Information:

Mini-sparker profiles are collected with a 500 Joule sparker source and 15-m single-channel streamer towed at the sea surface. The acoustic energy is reflected at density boundaries (such as the sea floor or sediment layers beneath the sea floor), and detected by the hydrophone array, and digitally recorded by the onboard PC-based acquisition system. As the vessel moves, this process is repeated multiple times per second, producing a two-dimensional image of the shallow geologic structure beneath the ship track.

Additional information about the USGS field activity S-2-06-SC is available at <http://walrus.wr.usgs.gov/infobank/s/s206sc/html/s-2-06-sc.meta.html>.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20060901

Ending_Date: 20060908

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -117.84953

East_Bounding_Coordinate: -117.51352

North_Bounding_Coordinate: 33.56004

South_Bounding_Coordinate: 33.20846

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: geoscientificinformation

Theme_Keyword: oceans

Theme:

Theme_Keyword_Thesaurus: USGS CMG InfoBank

Theme_Keyword: Marine Geology

Theme_Keyword: Marine Geophysics

Theme_Keyword: Marine Seismic

Place:

Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)

Place_Keyword: Dana Point

Place_Keyword: San Mateo Point

Place_Keyword: Laguna Beach

Place_Keyword: Oceanside

Place_Keyword: Orange County

Place_Keyword: San Diego County

Place_Keyword: California

Place:

Place_Keyword_Thesaurus: USGS CMG InfoBank

Place_Keyword: CA

Place_Keyword: North Pacific Ocean

Place_Keyword: Northern Pacific Ocean

Place_Keyword: Southern California

Place_Keyword: California State Waters

Place_Keyword: USA

Access_Constraints:

Information presented in this publication is considered public information and may be distributed or copied.

Use_Constraints:

Not suitable for navigation

Read and fully comprehend the metadata prior to data use.

Acknowledge the U.S. Geological Survey (USGS), the Originator, when using the data set as a source. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Share data products developed using the source data set with the Originator.

Data should not be used beyond the limits of the source scale. This information is not intended for navigational purposes.

The data set is NOT a survey document and should not be utilized as such. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Ray W. Sliter

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: 650-329-5194

Contact_Facsimile_Telephone: 650-329-5190

Contact_Electronic_Mail_Address: rsliter@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

<https://pubs.usgs.gov/of/2010/1111/figures/original/figure1.jpg>

Browse_Graphic_File_Description:

Location map of single-channel mini-sparker seismic data accessible via this report.

Browse_Graphic_File_Type: JPEG

Browse_Graphic:

Browse_Graphic_File_Name:

<https://pubs.usgs.gov/of/2010/1111/tracklines/sparker/jpg/DP-001.jpg>

Browse_Graphic_File_Description:

Example of single-channel mini-sparker seismic data accessible via this report.

Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

The authors thank Rick Baker of the Ocean Institute at Dana Point along with the captain and crew of R/V Sea Explorer for assistance in the acquisition of the mini-sparker data.

Native_Data_Set_Environment: SEG-Y

Cross_Reference:

Citation_Information:

Originator: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

Publication_Date: 2008

Title: USGS CMG S-2-06-SC Metadata

Online_Linkage:

<http://walrus.wr.usgs.gov/infobank/s/s206sc/html/s-2-06-sc.meta.html>

Data_Quality_Information:

Attribute_Accuracy:

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. All seismic-reflection data collected on the referenced cruises have been included in this report. Some seismic profiles have gaps in them due to system crashes, mammal shutdowns or hardware maintenance.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Shot point numbers in the data files correspond to those in the navigation files. The horizontal positional accuracy of the seismic data thus linked to ship's position is estimated to be within 30 meters.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Depths shown in the seismic data files are in milliseconds (round trip travel time) and are referenced to sea level.

Lineage:

Process_Step:

Process_Description:

Refer to report sections "Data Acquisition and Processing" for details of geophysical data acquisition and processing sequence used for data in this report. - Ray W. Sliter

Process_Date: 2008

Process_Step:

Process_Description:

Created bathymetry overlay using GMT <http://gmt.soest.hawaii.edu/>. - Peter J. Triezenberg

Process_Date: 2009

Process_Step:

Process_Description:

Created interactive trackline map using Google Maps API <http://code.google.com/apis/maps/>. - Peter J. Triezenberg

Process_Date: 2009

Process_Step:

Process_Description:

Created downloadable Google Earth "kmz" file <http://code.google.com/apis/kml/>. - Peter J. Triezenberg

Process_Date: 2009

Process_Step:

Process_Description:

Created seismic profile images using Seismic Unix <http://www.cwp.mines.edu/cwpcodes/> to provide format options for downloading data. - Ray W. Sliter

Process_Date: 2008

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Ray W. Sliter

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) 329-5194

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: rsliter@usgs.gov

Process_Step:

Process_Description:

Converted profiles to TIFF and JPEG files using ImageMagick <http://www.imagemagick.org/>. - Peter J. Triezenberg

Process_Date: 2009

Process_Step:

Process_Description:

Used GEODAS (GEOphysical DAta System) to create a custom bathymetric and topographic grid for the southern California region covered by the cruise maps. The website is: <http://www.ngdc.noaa.gov/mgg/geodas/geodas.html>. The parameters used are as follows: Grid Database: US Coastal Relief Model Grids Grid Area in degrees and minutes: 34:30 N to 33:48 N, 119:00 W to 120:24 W Grid Cell Size: 3 seconds Grid Format: XYZ (lon, lat, depth), no header, space-delimited, omit empty grid cells. Cell Parameters: 4-byte floating point, tenths of meters Land/Sea Coverage: Sea cells only. - Peter J. Triezenberg

Process_Date: 2008

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Peter J. Triezenberg

Contact_Position: Geologist

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) 329-5207

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: ptriezenberg@usgs.gov

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference:

Horizontal X and Y locations for the seimic profiles location are provided in ASCII position files and are also stored in the SEG-Y data trace headers in the standard header locations.

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 11

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -117.0

Latitude_of_Projection_Origin: 0.0

False_Easting: 500000

False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 3

Ordinate_Resolution: 3

Planar_Distance_Units: seconds

Geodetic_Model:

Horizontal_Datum_Name: World Geodetic System 1984

Ellipsoid_Name: WGS 84

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 298.257

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Ascii data sets s-2-06-sc.410_060 has initial header records followed by data records with these fields - 4-digit year, 3-digit day of year, 2-digit hour, 2-digit minute, 2-digit second, 1-digit tenth of second, decimal degree latitude, decimal degree longitude, alpha-numeric line ID, FFID number, Shot number, and CDP number. Example:

					! /infobank/s/s206sc/seis/s-2-06-sc.410_060
					! time/lat/long style, multi-record, in caps, without tabs
					! (Year, Day, Hour, Min, Sec, Tenths, Latitude, Longitude, Line, FFID, Shot, CDP, Comment)
					! (i4.4, i3.3, 3i2.2, i1.1, t16, f9.5, t26, f10.5, t37, a12, t50, i9, t60, i9, t70, i9, t80, a)
					! (%4.4i%3.3i3%2.2i%1.1i %9.5f %10.5f %12s %9i %9i %9i %s\\n)
					! temporal domain
					! data acquisition systems
					! use value = -9999 for null FFID, Shot, or CDP
					!
					!*09/18/2006 ray /we/ray/410files/s-2-06-sc.410_scms
					! /infobank/programs/edit/mergeit/mergeit
					!
					!        1         2         3         4         5         6         7         8         9
					! 3456789012345678901234567890123456789012345678901234567890123456789012345678901234567890
					!
					20062452243000  33.42198 -117.67355       DP-001         1         1     -9999
					20062452243010  33.42196 -117.67356       DP-001         2         2     -9999
					20062452243020  33.42194 -117.67357       DP-001         3         3     -9999
					20062452243030  33.42193 -117.67357       DP-001         4         4     -9999
					20062452243040  33.42191 -117.67358       DP-001         6         6     -9999
					20062452243050  33.42189 -117.67359       DP-001         7         7     -9999
					20062452243060  33.42187 -117.67360       DP-001         8         8     -9999
					20062452243070  33.42185 -117.67361       DP-001         9         9     -9999
					20062452243090  33.42182 -117.67362       DP-001        10        10     -9999
					

Entity_and_Attribute_Detail_Citation:

U.S. Geological Survey, USGS CMG InfoBank format for Seismic FFID/Shot/CDP data, 2010, <http://walrus.wr.usgs.gov/infobank/programs/html/dictionary2html/format_410.html>.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Ray W. Sliter

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) 329-5194

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: rsliter@usgs.gov

Contact_Instructions:

Data may be available off-line only by special arrangement with the distributor above. Please use the on-line download option unless precluded by download times or access difficulties.

Resource_Description: U.S. Geological Suvey Open-File Report 2010-1111

Distribution_Liability:

Information presented in this publication is considered public information and may be distributed or copied. Please recognize the U.S. Geological Survey (USGS) as the source of this information.

This information is not intended for navigational purposes.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: SEG-Y, JPEG, TIFF, ASCII

Transfer_Size: 4.5 gigabytes

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <https://pubs.usgs.gov/of/2010/1111/>

Offline_Option:

Recording_Format: ISO 9660

Offline_Media: none

Fees: None

Technical_Prerequisites:

Use of SEG-Y data requires specialized software, such as ProMax and Seisworks by Landmark Geophysical; FOCUS and SeisX by Paradigm Geophysical; SPW by Parallel Geoscience; or VISTA by Seismic Image Software.

Metadata_Reference_Information:

Metadata_Date: 20100216

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)

Contact_Person: Ray W. Sliter

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) 329-5194

Contact_Facsimile_Telephone: (650) 329-5190

Contact_Electronic_Mail_Address: rsliter@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: universal time

Metadata_Access_Constraints: none

Metadata_Use_Constraints: none