Sediment Thickness--Pigeon Point to Monterey, California

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., Watt, Janet T., Sliter, Ray W., and Maier, Katie L., 2015, Sediment Thickness--Pigeon Point to Monterey, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

   Online Links:

   • https://doi.org/10.5066/F7N29V0Z
   • https://doi.org/10.3133/ds781

   This is part of the following larger work.
   Golden, Nadine E., 2013, California State Waters Map Series Data Catalog: Data Series DS 781, U.S. Geological Survey, Reston, VA.

   Online Links:

   • https://doi.org/10.3133/ds781

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -122.482894
   East_Bounding_Coordinate: -121.806918
   North_Bounding_Coordinate: 37.234833
   South_Bounding_Coordinate: 36.588129
   

3. What does it look like?

   https://www.sciencebase.gov/catalog/file/get/56d5df1de4b015c306f26ea5?name=SedimentThickness_PigeonPointToMonterey.jpg&allowOpen=true (JPEG)

   Map of sediment-thickness for the Pigeon Point to Monterey, California, map region

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

   Beginning_Date: 2006

   Ending_Date: 2010

   Currentness_Reference:

   ground condition

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

   Geospatial_Data_Presentation_Form: GeoTiff
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      This is a Raster data set. It contains the following raster data types:
      • Dimensions 1215 x 1442 x 1, type Grid Cell
   2. What coordinate system is used to represent geographic features?
      

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:

      UTM_Zone_Number: 10
      Transverse_Mercator:

      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -117.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.0
      False_Northing: 0.0
      

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 50.0
      Ordinates (y-coordinates) are specified to the nearest 50.0
      Planar coordinates are specified in meters
      The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257224.
      
7. How does the data set describe geographic features?

   Value

   Sediment thickness in meters (Source: ESRI)

   VALUE

   Thickness in meters of the sediment above transgressive surface (Source: ESRI)

   Range of values
   Minimum:	0.0
   Maximum:	31.94
   Units:	meters

   Entity_and_Attribute_Overview:

   Grid value is thickness of sediment above the transgressive surface of the last glacial maximum in meters.

   Entity_and_Attribute_Detail_Citation: none
   

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
   • Janet T. Watt
   • Ray W. Sliter
   • Katie L. Maier
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
   

   US

   831-427-4747 (voice)

   pcmsc_data@usgs.gov

Why was the data set created?

These data are intended for science researchers, students, policy makers, and the general public. This information is not intended for navigational purposes. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.

How was the data set created?

1. From what previous works were the data drawn?

   S-15-10-NC (source 1 of 15)

   U.S. Geological Survey, 2014, Geophysical data from USGS field activity S-15-10-NC: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://cmgds.marine.usgs.gov/fan_info.php?fan=S1510NC

   Type_of_Source_Media: ASCII lat/long shot point files
   Source_Contribution:

   Digital seismic data used to interpret subsurface geologic structure

   S-06-11-MB (source 2 of 15)

   U.S. Geological Survey, 2011, Geophysical data from USGS field activity S-06-11-MB: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://cmgds.marine.usgs.gov/fan_info.php?fan=S0611MB

   Type_of_Source_Media: ASCII lat/long shot point files
   Source_Contribution:

   Digital seismic data used to interpret subsurface geologic structure

   S-N1-09-MB (source 3 of 15)

   U.S. Geological Survey, 2014, Geophysical data from USGS field activity S-N1-09-MB: U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://cmgds.marine.usgs.gov/fan_info.php?fan=SN109MB

   Type_of_Source_Media: ASCII lat/long shot point files
   Source_Contribution:

   Digital seismic data used to interpret subsurface geologic structure

   GeoPigeonPt (source 4 of 15)

   Watt, Janet T., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Pigeon Point, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshorePigeonPoint/data_catalog_OffshorePigeonPoint.html

   Type_of_Source_Media: polygon shapefile
   Source_Contribution: used to determine seafloor outcrops
   

   GeoScottCrk (source 5 of 15)

   Hartwell, Stephen R., Johnson, Samuel Y., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Scott Creek, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreScottCreek/data_catalog_OffshoreScottCreek.html

   Type_of_Source_Media: polygon shapefile
   Source_Contribution: used to determine seafloor outcrops
   

   GeoSantaCruz (source 6 of 15)

   Johnson, Samuel Y., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Santa Cruz, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreSantaCruz/data_catalog_OffshoreSantaCruz.html

   Type_of_Source_Media: polygon shapefile
   Source_Contribution: used to determine seafloor outcrops
   

   GeoAptos (source 7 of 15)

   Johnson, Samuel Y., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Geology and geomorphology--Offshore of Aptos, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreSantaCruz/data_catalog_OffshoreSantaCruz.html

   Type_of_Source_Media: polygon shapefile
   Source_Contribution: used to determine seafloor outcrops
   

   GeoMryCyn (source 8 of 15)

   Maier, Katherine L., Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Greene, H. Gary, 2016, Geology and geomorphology--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/MontereyCanyon/data_catalog_MontereyCanyon.html

   Type_of_Source_Media: polygon shapefile
   Source_Contribution: used to determine seafloor outcrops
   

   GeoMonterey (source 9 of 15)

   Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Watt, Janet T., 2016, Geology and geomorphology—Offshore of Monterey, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreMonterey/data_catalog_OffshoreMonterey.html

   Type_of_Source_Media: polygon shapefile
   Source_Contribution: used to determine seafloor outcrops
   

   FaultsPigeonPt (source 10 of 15)

   Watt, Janet T., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Faults--Offshore of Pigeon Point, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshorePigeonPoint/data_catalog_OffshorePigeonPoint.html

   Type_of_Source_Media: polyline shapefile
   Source_Contribution: used to interpret subsurface geologic structure
   

   FaultsScottCrk (source 11 of 15)

   Hartwell, Stephen R., Johnson, Samuel Y., and Davenport, Clifton W., 2015, Faults--Offshore of Scott Creek, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreScottCreek/data_catalog_OffshoreScottCreek.html

   Type_of_Source_Media: polyline shapefile
   Source_Contribution: used to interpret subsurface geologic structure
   

   FaultsSantaCruz (source 12 of 15)

   Johnson, Samuel Y., Hartwell, Stephen R., and Davenport, Clifton W., 2015, Faults--Offshore of Santa Cruz, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreSantaCruz/data_catalog_OffshoreSantaCruz.html

   Type_of_Source_Media: polyline shapefile
   Source_Contribution: used to interpret subsurface geologic structure
   

   FaultsAptos (source 13 of 15)

   Johnson, Samuel Y., Hartwell, Stephen R., Davenport, Clifton W., and Maier, Katherine L., 2015, Faults--Offshore of Aptos, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreSantaCruz/data_catalog_OffshoreSantaCruz.html

   Type_of_Source_Media: polyline shapefile
   Source_Contribution: used to interpret subsurface geologic structure
   

   FaultsMryCyn (source 14 of 15)

   Maier, Katherine L., Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Greene, H. Gary, 2016, Faults--Monterey Canyon and Vicinity, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/MontereyCanyon/data_catalog_MontereyCanyon.html

   Type_of_Source_Media: polyline shapefile
   Source_Contribution: used to interpret subsurface geologic structure
   

   FaultsMonterey (source 15 of 15)

   Hartwell, Stephen R., Johnson, Samuel Y., Davenport, Clifton W., and Watt, Janet T., 2016, Faults--Offshore of Monterey, California: Data Series DS 781, U.S. Geological Survey (USGS), Reston, VA.

   Online Links:

   • https://cmgds.marine.usgs.gov/data/csmp/OffshoreMonterey/data_catalog_OffshoreMonterey.html

   Type_of_Source_Media: polyline shapefile
   Source_Contribution: used to interpret subsurface geologic structure
   

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

   Date: 2014 (process 1 of 4)

   Water bottom (seabed) and depth to base of the Last Glacial Maximum (LGM) horizons were digitized from seismic-reflection data using Seisworks software. The difference between the two horizons was exported from Seisworks for every shot point as XY coordinates (UTM Zone 10) and two-way travel time (TWT). The thickness was determined by applying a sound velocity to the TWT of 1,500 m/sec in water and 1,600 m/sec velocity in sediment, resulting in sediment thickness values. Data sources used in this process:

   • S-15-10-NC
   • S-N1-09-MB
   • S-06-11-MB

   Data sources produced in this process:

   • SedimentThicknessPoints

   Date: 2014 (process 2 of 4)

   XY locations and sediment thickness values Z were imported to ArcGIS format as points and interpolated to a preliminary surface with TopoRaster from which isopachs (thickness contours) were extracted at 2.5 m intervals. Further refinement of this sediment thickness map and the isopach shapefile (see https://doi.org/10.5066/F7N29V0Z SedimentThickness_PigeonPointToMonterey.zip and Isopachs_PigeonPointToMonterey.zip) was accomplished through several iterations of manual editing to incorporate geology and fault information following the methodology of Wong (2012; see http://pubs.usgs.gov/of/2012/1161/). Data sources used in this process:

   • GeoPigeonPt
   • GeoScottCrk
   • GeoSantaCruz
   • GeoAptos
   • GeoMryCyn
   • GeoMonterey
   • FaultsPigeonPt
   • FaultsScottCrk
   • FaultsSantaCruz
   • FaultsAptos
   • FaultsMryCyn
   • FaultsMonterey

   Data sources produced in this process:

   • SedimentThickness

   Date: 22-Jun-2018 (process 3 of 4)

   Corrected author spelling in Larger Work section Person who carried out this activity:
   

   Susan A Cochran

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

   Geologist

   2885 Mission Street

   Santa Cruz, CA
   

   USA

   (831) 460-7545 (voice)

   scochran@usgs.gov

   Date: 18-Nov-2021 (process 4 of 4)

   Edited metadata to add USGS Thesaurus keywords and perform minor edits to bring the metadata up to current PCMSC standards. No data were changed. The metadata available from a harvester may supersede metadata bundled within a download file. Users are advised to compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
   

   U.S. Geological Survey

   Attn: Susan Cochran

   Geologist

   2885 Mission Street

   Santa Cruz, CA
   

   831-460-7545 (voice)

   scochran@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?
   Data points are approximately 1 m apart along tracklines and 1000-2000 m apart between tracks. 50-m cell size for interpolation is better supported along track than between.
2. How accurate are the geographic locations?
   The chirp sonar instrument is deployed under the research vessel with about 10m of variation in position. The sparker position may vary as much as 20m from the navigation reference on the vessel.
3. How accurate are the heights or depths?
   Estimated to be approximately 1 m, along the track lines where data is well constrained, but may be much greater in areas where interpolation occurred.
4. Where are the gaps in the data? What is missing?
   Sediment thickness data points exported from Seisworks profiling software were processed within the limit of California’s State Waters.
5. How consistent are the relationships among the observations, including topology?
   All vector geometry and attributes present.

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. This information is not intended for navigation 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
   

   1-888-275-8747 (voice)

   sciencebase@usgs.gov
2. What's the catalog number I need to order this data set? SedimentThickness_PigeonPointToMonterey.zip
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:

     The .zip file for the TIFF image includes the image (.tif), the world registration file (.tfw), and the text (.txt) and XML (.tif.xml) versions of the metadata for the Sediment Thickness layer for Pigeon Point to Monterey, California. in format GeoTIFF (version ArcMap (version 10.0, ESRI , 2011)) Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system with datum WGS84. Size: 1.6

     Network links:

     https://www.sciencebase.gov/catalog/file/get/56d60743e4b015c306f27009 https://doi.org/10.5066/F7N29V0Z https://doi.org/10.3133/ds781

   • Cost to order the data: none

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

   The downloadable data file has been compressed with the "zip" command and can be unzipped with Winzip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ArcMap TIFF.

Who wrote the metadata?

Dates:

Last modified: 18-Nov-2021

Metadata author:

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

Attn: PCMSC Science Data Coordinator

2885 Mission Street

Santa Cruz, CA

US

831-427-4747 (voice)

pcmsc_data@usgs.gov

Metadata standard:

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