Navigation data for marine geophysical data collected between Point Sal and Refugio State Beach (southern California) during field activity 2014-632-FA from 07/17/2014 to 08/02/2014

Frequently anticipated questions:

• What does this data set describe?
  1. How might this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How might this data set be cited?
   Johnson, Samuel Y., Hartwell, Stephen R., and Beeson, Jeffrey W., 2016, Navigation data for marine geophysical data collected between Point Sal and Refugio State Beach (southern California) during field activity 2014-632-FA from 07/17/2014 to 08/02/2014: data release DOI:10.5066/F7SX6BCD, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

   Online Links:

   • https://doi.org/10.5066/F7SX6BCD
   • https://www.sciencebase.gov/catalog/item/5ee3e67482ce3bd58d7e1e43

   This is part of the following larger work.
   Johnson, Samuel Y., Hartwell, Stephen R., and Beeson, Jeffrey W., 2016, Marine Geophysical Data - Point Sal to Refugio State Beach: data release DOI:10.5066/F7SX6BCD, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

   Online Links:

   • https://doi.org/10.5066/F7SX6BCD

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -120.808267
   East_Bounding_Coordinate: -120.036534
   North_Bounding_Coordinate: 34.989906
   South_Bounding_Coordinate: 34.240526
   

3. What does it look like?

   https://www.sciencebase.gov/catalog/file/get/5ee3e67482ce3bd58d7e1e43?name=2014_632_FA_Thumbnail.png&allowOpen=true (GIF)

   Trackline map of 2014-632-FA

4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 17-Jul-2014

   Ending_Date: 02-Aug-2014

   Currentness_Reference:

   ground condition at the time the data were collected

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: Shapefile
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • String
   2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.
      

      Vertical_Coordinate_System_Definition:

      Depth_System_Definition:

      Depth_Datum_Name: Local surface
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values
      

7. How does the data set describe geographic features?

   Seismic navigation

   points representing each seismic trace (Source: This report)

   FID

   Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.

   Shape

   Feature geometry. (Source: ESRI) Coordinates defining the features.

   trans

   Survey transect-line identifier (Source: Producer defined) text field containing the identifier for each survey line

   Length

   length of transect line in meters (Source: Producer defined)

   Range of values
   Minimum:	.056159
   Maximum:	21.579876

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Samuel Y. Johnson
   • Stephen R. Hartwell
   • Jeffrey W. Beeson
2. Who also contributed to the data set?
3. To whom should users address questions about the data?
   U.S. Geological Survey, Pacific Coastal and Marine Science Center

   Attn: PCMSC Science Data Coordinator

   2885 Mission Street

   Santa Cruz, CA
   

   831-427-4747 (voice)

   pcmsc_data@usgs.gov

Why was the data set created?

These data were acquired to support the California Seafloor Mapping Program and USGS geologic hazards projects to aide hazard assessment of southern Hosgri fault and connections to faults in Transverse Ranges and Santa Barbara Channel. These data and information are intended for science researchers, students from elementary through college, policy makers, and general public.

How was the data set created?

1. From what previous works were the data drawn?

   minisparker SEG-Y (source 1 of 1)

   Johnson, Samuel Y., Hartwell, Stephen R., and Beeson, Jeffrey W., 2016, Raw, high-resolution seismic-reflection data collected between Point Sal and Refugio State Beach (southern California) during field activity 2014-632-FA from 07/17/2014 to 08/02/2014: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

   Online Links:

   • http://www.sciencebase.gov/catalog/item/5ee3e69182ce3bd58d7e1e4a

   Type_of_Source_Media: digital data
   Source_Contribution: navigation files were extracted from SEG-Y files
   

2. How were the data generated, processed, and modified?

   Date: 2014 (process 1 of 3)

   The latitude and longitude of each seismic trace were extracted from the original, raw SEG-Y files, and concatenated to a single text file. The text file was then converted to polyline shapefile format. Person who carried out this activity:
   

   U.S. Geological Survey, Pacific Coastal and Marine Science Center

   Attn: Stephen R. Hartwell

   Geologist

   2885 Mission Street

   Santa Cruz, CA
   

   US

   831-460-7814 (voice)

   831-427-4748 (FAX)

   shartwell@usgs.gov

   Data sources used in this process:

   • minisparker SEG-Y

   Date: 12-Jun-2020 (process 2 of 3)

   Data and metadata files were moved to a different location on ScienceBase, resulting in a change of ID number in the Online_Linkage and Network_Resources URLs of the metadata. In addition, edits were made as needed to bring the metadata up to current PCMSC standards including standardizing doi# links, correcting typos, and refining keywords. Point of Contact and Metadata Contact information sections were changed to static PCMSC contact information. No data were changed. Users are advised to compare the metadata date of this file to any similar file to ensure they are using the most recent version. Person who carried out this activity:
   

   Susan A Cochran

   U.S. Geological Survey, Pacific Coastal and Marine Science Center

   2885 Mission St.

   Santa Cruz, CA
   

   United States

   831-460-7545 (voice)

   scochran@usgs.gov

   Date: 19-Oct-2020 (process 3 of 3)

   Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: VeeAnn A. Cross

   Marine Geologist

   384 Woods Hole Road

   Woods Hole, MA
   

   508-548-8700 x2251 (voice)

   508-457-2310 (FAX)

   vatnipp@usgs.gov

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?
   Identified as best available version.
2. How accurate are the geographic locations?
   A formal accuracy assessment of the horizontal positional information in the data set has not been conducted.
3. How accurate are the heights or depths?
   This navigation data does not contain vertical position information.
4. Where are the gaps in the data? What is missing?
   Dataset is considered complete for the information presented, as described in the abstract. Some navigation lines have gaps in them due to system crashes, mammal shutdowns or hardware maintenance. Users are advised to read the rest of the metadata record carefully for additional details.
5. How consistent are the relationships among the observations, including topology?
   All navigation data were collected during USGS cruise 2014-632-FA using a GPS navigation system. Quality control was conducted during the collection process.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None.
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This information is not intended for navigational purposes.

1. Who distributes the data set? (Distributor 1 of 1)
   
   U.S. Geological Survey - ScienceBase

   Denver Federal Center, Building 810, Mail Stop 302

   Denver, CO
   

   USA

   1-888-275-8747 (voice)
2. What's the catalog number I need to order this data set? This zip file contains navigation data derived from high-resolution seismic-reflection data collected during PCMSC field activity 2014-632-FA provided in shapefile format, as well as metadata and a trackline map.
3. What legal disclaimers am I supposed to read?

   Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Shapefile Size: 5.1
     Network links:	https://www.sciencebase.gov/catalog/file/get/5ee3e67482ce3bd58d7e1e43 https://doi.org/10.5066/F7SX6BCD

   • Cost to order the data: None

5. What hardware or software do I need in order to use the data set?

   Use of shapefile data requires specialized software, such as ESRI ArcMap, or GeoMapApp

Who wrote the metadata?

Dates:

Last modified: 19-Oct-2020

Metadata author:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Attn: PCMSC Science Data Coordinator

2885 Mission Street

Santa Cruz, CA

831-427-4747 (voice)

pcmsc_data@usgs.gov

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)