# Bathymetry Hillshade [2m]--Offshore of 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?

Title: Bathymetry Hillshade [2m]--Offshore of Monterey, California
Abstract:
This part of DS 781 presents data for the bathymetry map of the Offshore of Monterey map area, California. Bathymetry data are provided as separate grids depending on resolution. This metadata file refers to the data included in "BathymetryHS_2m_OffshoreMonterey.zip," which is accessible from https://doi.org/10.5066/F70Z71C8. These data accompany the pamphlet and map sheets of Johnson, S.Y., Dartnell, P., Hartwell, S.R., Cochrane, G.R., Golden, N.E., Watt, J.T., Davenport, C.W., Kvitek, R.G., Erdey, M.D., Krigsman, L.M., Sliter, R.W., and Maier, K.L. (S.Y. Johnson and S.A. Cochran, eds.), 2016, California State Waters Map Series—Offshore of Monterey, California: U.S. Geological Survey Open-File Report 2016–1110, pamphlet 44 p., 10 sheets, scale 1:24,000, https://doi.org/10.3133/ofr20161110.
The 2-m and 5-m bathymetry and shaded-relief bathymetry maps of the Offshore of Monterey map area, California, were generated from acoustic bathymetry data collected by California State University, Monterey Bay (CSUMB) and by Monterey Bay Aquarium Research Institute (MBARI), as well as from bathymetric lidar data collected by the U.S. Army Corps of Engineers, Joint Airborne Lidar Bathymetry Center of Expertise (JALBTCX). Acoustic mapping was completed between 1998 and 2012 using a combination of 200-kHz/400-kHz Reson 7125, 100-kHz Reson 7111, 240-kHz Reson 8101, and 30-kHz Simrad EM-300 multibeam echosounders, as well as 234-kHz and 468-kHz SWATHplus bathymetric sidescan-sonar systems. Bathymetric lidar mapping was completed between 2009 and 2010 for the California Coastal Mapping Project (CCMP). These mapping missions combined to collect bathymetry data from the shoreline to beyond the limit of California’s State Waters. NOTE: The horizontal datum of this bathymetry data (NAD83) differs from the horizontal datum of other layers in this data release (WGS84).
Supplemental_Information:
For additional information CSUMB on bathymetry data online visit http://seafloor.otterlabs.org and for MBARI data see http://www.ngdc.noaa.gov/mgg/bathymetry/relief.html.

1. How might this data set be cited?
   Dartnell, Peter, and Kvitek, Rikk G., 2016, Bathymetry Hillshade [2m]--Offshore of Monterey, California: Data Series DS 781, U.S. Geological Survey, Reston, VA.

   Online Links:

   - https://doi.org/10.3133/ds781
   - https://cmgds.marine.usgs.gov/data/csmp/OffshoreMonterey/data_catalog_OffshoreMonterey.html

   This is part of the following larger work.

   Golden, Nadine E., 2015, 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: -122.064886
   East_Bounding_Coordinate: -121.811775
   North_Bounding_Coordinate: 36.692799
   South_Bounding_Coordinate: 36.532722
3. What does it look like?
   https://www.sciencebase.gov/catalog/file/get/56cf5fc5e4b015c306ed183c?name=BathymetryHS_2m_OffshoreMonterey.jpg&allowOpen=true (JPEG)
     Hillshaded bathymetry map offshore of Monterey.
4. Does the data set describe conditions during a particular time period?
   Beginning_Date: 1998
   Ending_Date: 2012
   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 11222 x 8816 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: 0.9996
      Longitude_of_Central_Meridian: -123.00000
      Latitude_of_Projection_Origin: 0.00000
      False_Easting: 500000.0
      False_Northing: 0.00
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 2.0
      Ordinates (y-coordinates) are specified to the nearest 2.0
      Planar coordinates are specified in Meters
      The horizontal datum used is NAD83.
      The ellipsoid used is GRS80.
      The semi-major axis of the ellipsoid used is 6378137.00.
      The flattening of the ellipsoid used is 1/298.257223563.
      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: North American Vertical Datum of 1988
      Altitude_Resolution: 2.0
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method: Attribute values
7. How does the data set describe geographic features?
   Value
     Bathymetry [2m] hillshade intensity value (Source: ESRI)
     VALUE
       Bathymetry hillshade intensity value (Source: ESRI)

       Range of values
       Minimum: | 0
       Maximum: | 254
       Units: | Integers from 0-254 representing hillshaded bathymetry

     Entity_and_Attribute_Overview:
     The complete 2-m resolution bathymetry grid for Offshore of Monterey, California were originally archived as an ESRI grid with the following attributes. NOTE: the horizontal datum of the bathymetry data (NAD83) differs from the horizontal datum of other layers in this data release (WGS84).

         Cell size = 2.0
         Number of rows = 11222
         Number of columns = 8816

         Data type = floating point

         Boundary
         Xmin = 583710
         Xmax = 606154
         Ymin = 4043571
         Ymax = 4061203

         Statistics
         Minimum value = 0
         Maximum value = 254
         Mean = 179.95
         Standard deviation = 23.80

         Coordinate system description
         Projection  UTM
         Zone  10
         Datum  NAD83
         Vertical Datum  NAVD88
         Units  meter

     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)
   - Peter Dartnell
   - Rikk G. Kvitek
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. These data can be used with geographic information systems or other software to identify bathymetric features. These data are not intended to be used for navigation.

### How was the data set created?

1. From what previous works were the data drawn?
2. How were the data generated, processed, and modified?
   Date: 2006 (process 1 of 7)
     During the CSUMB mapping missions, an Applanix POS MV (Position and Orientation System for Marine Vessels) was used to accurately position the vessels during data collection, and it also accounted for vessel motion such as heave, pitch, and roll (position accuracy, +/-2 m; pitch, roll, and heading accuracy, +/-0.02 percent; heave accuracy, +/-5 percent, or 5 cm). To account for tidal-cycle fluctuations, KGPS data (GPS data with real-time kinematic corrections) was used; in addition, sound-velocity profiles were collected with an Applied Microsystems (AM) SVPlus sound velocimeter. Soundings were corrected for vessel motion using the Applanix POS MV data, for variations in water-column sound velocity using the AM SVPlus data, and for variations in water height (tides) using vertical-position data from the KGPS receivers. Finally, the soundings were converted into 2-m-resolution bathymetric-surface-model grids. Person who carried out this activity:
     Carrie Bretz
     Seafloor Mapping Lab, California State University Monterey Bay
     Projects Manager, GIS & Metadata Supervisor
     100 Campus Center, Bldg 13
     Seaside, CA
     USA

     831.582.4197 (voice)
     carrie_bretz@csumb.edu
   Date: 2016 (process 2 of 7)
     Nearshore acoustic and lidar bathymetric data within California State Waters were merged together by Dewberry as part of the 2013 NOAA Coastal California TopoBathy Merge Project (National Oceanic and Atmospheric Administration, 2013). Merged bathymetry data within the Southern Monterey Bay map area were downloaded from this data set and re-sampled to 2-m spatial resolution. The MBARI 5-m bathymetric surface-model-grid was also clipped to the Offshore of Monterey map boundary. The 2-m and 5-m grids were not merged and are provided as separate grids. To create the shaded-relief imagery, an illumination having an azimuth of 300 degrees and 45 degrees above the horizon was applied to the bathymetry grids. Person who carried out this activity:
     Pete Dartnell
     U.S. Geological Survey, Pacific Coastal and Marine Science Center
     Physical Scientist
     2885 Mission St.
     Santa Cruz, CA
     USA

     (831) 460-7415 (voice)
     pdartnell@usgs.gov
   Date: 05-Oct-2017 (process 3 of 7)
     Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. Person who carried out this activity:
     U.S. Geological Survey
     Attn: Alan O. Allwardt
     Contractor -- Information Specialist
     2885 Mission Street
     Santa Cruz, CA

     831-460-7551 (voice)
     831-427-4748 (FAX)
     aallwardt@usgs.gov
   Date: 26-Apr-2018 (process 4 of 7)
     Added keywords from Coastal and Marine Ecological Classification Standard (CMECS) to metadata. Person who carried out this activity:
     U.S. Geological Survey
     Attn: Alan O. Allwardt
     Contractor -- Information Specialist
     2885 Mission Street
     Santa Cruz, CA

     831-460-7551 (voice)
     831-427-4748 (FAX)
     aallwardt@usgs.gov
   Date: 19-Oct-2020 (process 5 of 7)
     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
   Date: 14-Oct-2021 (process 6 of 7)
     Performed minor edits to the metadata to correct typos. No data were changed Person who carried out this activity:
     U.S. Geological Survey
     Attn: Susan A. Cochran
     Geologist
     2885 Mission Street
     Santa Cruz, CA

     831-460-7545 (voice)
     scochran@usgs.gov
   Date: 20-May-2022 (process 7 of 7)
     Edits were made to bring the metadata up to current PCMSC standards including standardizing authors' names, adding a doi# link, correcting typos, refining keywords, and using current access and distribution liability statements. Point of Contact and Metadata Contact information sections were changed to static PCMSC contact information. 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 date of this file to any similar file to ensure they are using the most recent version. Person who carried out this activity:
     U.S. Geological Survey
     Attn: Susan A. 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?
   Johnson, S.Y., Dartnell, P., Hartwell, S.R., Cochrane, G.R., Golden, N.E., Watt, J.T., Davenport, C.W., Kvitek, R.G., Erdey, M.D., Krisgman, L.M., Sliter, R.W., and Maier, K.L., 2016, California State Waters Map Series--Offshore of Monterey, California: Open-File Report 2016-1110, U.S. Geological Survey, Reston, VA.

   Online Links:

   - https://doi.org/10.3133/ofr20161110

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

1. How well have the observations been checked?
   Not applicable for raster data.
2. How accurate are the geographic locations?
   Estimated to be no less than 2 m, owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
3. How accurate are the heights or depths?
   Estimated to be no less than 20 cm, owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations.
4. Where are the gaps in the data? What is missing?
   Complete
5. How consistent are the relationships among the observations, including topology?
   Unspecified

### 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. Acknowledge the U.S. Geological Survey and California State University, Monterey Bay, Seafloor Mapping Lab in products derived from these data. Share data products developed using these data with the U.S. Geological Survey. This information is not intended for navigational purposes. Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data. This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.

1. Who distributes the data set? (Distributor 1 of 1)
   U.S. Geological Survey
   345 Middlefield Rd
   Menlo Park, CA
   USA

   (650) 329-4309 (voice)
2. What's the catalog number I need to order this data set?
3. What legal disclaimers am I supposed to read?

   > These databases, identified as bathymetry and shaded-relief maps of the Offshore of Monterey map area, California have been approved for release and publication by the U.S. Geological Survey (USGS). Although these databases have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at 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. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. These data are not intended for navigational use.

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 FGDC-compliant metadata for the BathymetryA [2m] data layer of Offshore Monterey, California. in format TIFF (version ArcMap (version 10.0, ESRI , 2011)) Raster data layer is registered TIFF image in the UTM Zone 10 coordinate system with datum NAD83. Size: 38
     Network links: | https://www.sciencebase.gov/catalog/file/get/56d61a72e4b015c306f27054? https://doi.org/10.5066/F70Z71C8 https://pubs.usgs.gov/ds/781/

   - 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. Users should download the ArcGIS Project File, OffshoreMontereyGIS.mxd.zip, a compressed (with the "zip" command) version of the ArcMap document (.mxd) that has all the data layers loaded in the table of contents for "Offshore of Monterey map area" and has all the data symbolized as on the data release map sheets. Download and save this ArcGIS project file, including all data layers, to the directory the user has created for this GIS.

### Who wrote the metadata?

Dates:
  Last modified: 20-May-2022
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)

Generated by `mp` version 2.9.52 on Fri May 20 14:58:20 2022