MONT95NG, MONT95SG, and MONT95C - Bathymetry grids and contours of the southern Monterey Bay area between Moss Landing and Monterey, California

Frequently-anticipated questions:

• What does this data set describe?
  1. How should 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?

Title:

MONT95NG, MONT95SG, and MONT95C - Bathymetry grids and contours of the southern Monterey Bay area between Moss Landing and Monterey, California

Abstract:

The bathymetric grids and derived contours are from data collected by the USGS with a multibeam (Simrad EM1000) sidescan sonar system in the southern Monterey Bay between Moss Landing and Monterey, California in 1995 (P1-95-MB, <http://walrus.wr.usgs.gov/infobank>). The data are provided as ArcInfo grids with 5-m resolution (MONT95NG, MONT95SG) and contours at 10-m intervals, and as shaded relief images (MNT95NSD.TIF, MNT95SSD.TIF) in the data/shaderel directory of this publication.

This is one of a collection of digital files of a geographic information system of spatially referenced data related to the USGS Coastal and Marine Geology Program "Monterey Bay National Marine Sanctuary Project" <http://walrus.wr.usgs.gov/mbms>. The data were collected and analyzed between 1994 and 2000.

Supplemental_Information:

Additional information about USGS field activity P295MB may be found at <http://walrus.wr.usgs.gov/infobank/p/p195mb/html/p-1-95-mb.meta.html>

1. How should this data set be cited?

   Wong, Florence L. , 2001, MONT95NG, MONT95SG, and MONT95C - Bathymetry grids and contours of the southern Monterey Bay area between Moss Landing and Monterey, California:.

   Online Links:

   • <http://geopubs.wr.usgs.gov/open-file/of01-179>

   This is part of the following larger work.

   Wong, F.L., and Eittreim, S.E., 2001, Continental Shelf GIS for the Monterey Bay National Marine Sanctuary: U.S. Geological Survey Open-File Report 01-179, U.S. Geological Survey, Menlo Park, CA.

   Online Links:

   • <http://geopubs.wr.usgs.gov/open-file/of01-179/>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -121.99683

   East_Bounding_Coordinate: -121.79537

   North_Bounding_Coordinate: 36.78702

   South_Bounding_Coordinate: 36.60341

3. What does it look like?

   <http://geopubs.wr.usgs.gov/open-file/of01-179/images/batmont95.gif> (GIF)

   location map of MONT95NG, MONT95SG, MONT95C

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

   Calendar_Date: 1995

   Currentness_Reference: Ground Condition

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

   Geospatial_Data_Presentation_Form: map

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 2166 x 2630, 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: 500000.00

      False_Northing: 0.00

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 5.0
      Ordinates (y-coordinates) are specified to the nearest 5.0
      Planar coordinates are specified in Meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is GRS1980.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257.
      

7. How does the data set describe geographic features?

   Entity_and_Attribute_Overview:

   Each of the bathymetry grids has a resolution of 5 m and records depth as negative floating point values.

   The geographic extent (in degrees) of each grid is

   
     GRID         XMIN      YMIN        XMAX      YMAX
   
   MONT95NG  -121.94406, 36.68801, -121.79537, 36.78702
   MONT95SG  -121.99683, 36.60341, -121.81936, 36.69687
   
   

   The geographic extent (in UTM meters) and size (in numbers of columns and rows) of each grid are

   
     GRID      XMIN   YMIN     XMAX    YMAX  NCOLS NROWS
   
   MONT95NG   594336 4060938 607486 4071768   2630 2166
   MONT95NG   589719 4051526 605469 4061716   3150 2038
   
   

   The depth values for each grid are

     GRID      ZMIN    ZMAX    MEAN    STDV
   
   MONT95NG  -256.9   -16.8    -62.9   26.4
   MONT95SG   -98.0    -4.0    -61.2   19.8
   
   

   The shaded relief images MNT5ND.TIF and MNT95SD.TIF have the following attributes

   
   Image Format :              TIFF
   Image Depth =                  8
   Image Type :           GRAYSCALE
   Image Bands =                  1
   Image Colormap :           FALSE
   Image Compressed :         FALSE
   Image Rotated :            FALSE
   Pixel Size DX =             5.00000
   Pixel Size DY =             5.00000
   
   

   The geographic extent (in degrees) of the shaded relief images are

   
   MNT95NSD.TIF: -121.93783, 36.69220, -121.81536, 36.77865
   MNT95SSD.TIF: -121.99783, 36.60334, -121.81533, 36.69667
   
   

   Attributes of bathymetry contour data MONT95C

   
   ELEV_M    -10 to -250 m by 10-m intervals; mean -80 m
   LENGTH    0.3 to 4565 m; mean 249 m
   
   

   Entity_and_Attribute_Detail_Citation: none

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Florence L. Wong

2. Who also contributed to the data set?

3. To whom should users address questions about the data?

   Florence L. Wong
   United States Geological Survey (USGS)
   Geologist, GIS Coordinator
   USGS, MailStop 999, 345 Middlefield Road
   Menlo Park, CA 94025-3561
   USA
   

   (650) 329-5327 (voice)
   (650) 329-5190 (FAX)
   fwong@usgs.gov
   

These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information about the shallower areas of the Monterey Bay National Marine Sanctuary.

1. From what previous works were the data drawn?

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

   Date: 1998 (process 1 of 2)

   Images processed with MIPS system. Converted to ArcInfo grids from which shaded relief and contours were derived.

   Date: 27-Mar-2001 (process 2 of 2)

   First draft of metadata created by F.L. Wong using a modified version of FGDCMETA.AML on ARC/INFO data set MONT95NG

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

1. How well have the observations been checked?

   Not available.

2. How accurate are the geographic locations?

   Not determined

3. How accurate are the heights or depths?

4. Where are the gaps in the data? What is missing?

   Complete

5. How consistent are the relationships among the observations, including topology?

   Not applicable for raster data.

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

Access_Constraints:

None

Use_Constraints:

Please recognize the U.S. Geological Survey (USGS) as the source of this information.

Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.

The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

This information is not intended for navigational purposes.

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

1. Who distributes the data set? (Distributor 1 of 1)

   United States Geological Survey (USGS)
   c/o Florence L. Wong
   Geologist, GIS Coordinator
   USGS, MailStop 999, 345 Middlefield Road
   Menlo Park, CA 94025-3561
   USA
   

   (650) 329-5327 (voice)
   (650) 329-5190 (FAX)
   fwong@usgs.gov
   

2. What's the catalog number I need to order this data set?

   USGS Open-File Report 01-179

3. What legal disclaimers am I supposed to read?

   Please recognize the U.S. Geological Survey (USGS) as the source of this information.

   Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.

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

   The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

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

     Data format:	depth grids and contours with attributes in format ArcInfo (version 8.0.2) Size: 24 megabytes
     Network links:	<http://geopubs.wr.usgs.gov/open-file/of01-179>

   • Cost to order the data: none

Dates:

Last modified: 27-Mar-2001
Last Reviewed: May-2001

Metadata author:

United States Geological Survey (USGS)
c/o Florence L. Wong
Geologist, GIS Coordinator
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA

(650) 329-5327 (voice)
(650) 329-5190 (FAX)
fwong@usgs.gov

Metadata standard:

Content Standard for Digital Geospatial Metadata ("CSDGM version 2") (FGDC-STD-001-1998)