High Resolution Bathymetry - Monterey Bay Region/High Resolution Bathymetry - Monterey Bay Region.ISO/readme.1st

Text File | 1989-11-09 | 16.1 KB | 414 lines

                         MONTEREY BAY REGIONAL SAMPLER

                               USGS/NOAA CD-ROM


       INTRODUCTION -

       One  of  the  major  efforts of the Joint  USGS-NOAA  Office  for
       Mapping  and  Research  in the EEZ is to  ensure  that  data  and
       information  relating  to  characteristics of  the  seafloor  are
       distributed  in a timely manner and in a useful form (or format).
       To  this end,  the office has participated in projects  involving
       the distribution of GLORIA data on CD-ROM to a selected community
       of researchers.  Initial reaction from the community is that  CD-
       ROM  is  beneficial  for the inexpensive dissemination  of  large
       files  of  digital data.   The current phase of the  project  has
       resulted in the production of this disc containing data collected
       from NOAA's SeaBeam Mapping Program.  The Monterey Canyon area of
       California has been selected for this initial test,  since a high
       degree  of interest has been shown in this area  from  scientists
       within and external to the program.

       This sampler disc contains NOAA High Resolution Bathymetric  Data
       and other data sets for the Monterey Canyon area. It was produced
       in  conjunction with the 1989 U.S.  Exclusive Economic Zone (EEZ)
       Symposium hosted by the U.S.  Geological Survey in Reston, Va. on
       November 14-16, 1989.

       Other  USGS/NOAA  data  on this disc can be  used  in  geographic
       information  systems and/or image analysis/processing systems  as
       preferred to test user acceptance to the use of CD-ROM as a  data
       distribution  medium.  Data on this disc include Geodetic control
       (benchmark) data, SLAR imagery, 1:2,000,000 and 1:100,000 Digital
       Line Graph (DLG) data,  Defense Mapping Agency Digital  Elevation
       Model (DEM) data,  digitized photography from the National Aerial
       Photography Program (NAPP),  LANDSAT Thematic Mapper,  and a sub-
       sample of the West Coast GLORIA data.

       Software developed within the USGS/NOAA Joint office for Mapping
       and  Research  (JOMAR)  to  select  and  display  these  data  is
       described elsewhere on this CD-ROM disc.

       For further information regarding the activities of the USGS/NOAA
       Joint  Office  for  Mapping  and  Research  contact:   Millington
       Lockwood,  JOMAR,  USGS National Center,  Reston,  VA 22092 Phone
       703-648-6525.


            THIS DISC -


                                       1


       This  disc  was  structured with four  "categories"  of  computer
       systems in mind: 1) DOS systems with an "extended" or "super" VGA
       display  card,  2)  DOS  systems with either generic VGA  or  EGA
       display  cards,  3)  Macintosh  II  systems,  and  4)  PC  and/or
       minicomputer  Geographic Information Systems or image  processing
       systems. Macintosh II and GIS, and image processing systems users
       will find the file parameters (number of lines,  number of  bytes
       per  line) required by their systems to access the image files in
       two tables below.  DOS system users without an "extended" display
       card can use the IMDISP program (IMage DISPlay) developed for the
       National  Aeronautics and Space Administration by Jet  Propulsion
       Laboratory's Planetary Data System. This program for those who do
       not  yet have it is provided in the \IMDISP subdirectory,  as  is
       the user's documentation.

       DOS  system users with either the Orchid or  Paradise  "extended"
       VGA  cards  will  be  able to simultaneously display  up  to  256
       colors.


            SYSTEM REQUIREMENTS -

       Based  on the above,  the preferred,  and recommended system  for
       scientific  enquiry  using the data on this disc is an  80386  or
       80386SX microprocessor-based DOS system with a minimum 70 MB hard
       disk,  VGA capable monitor,  and an "extended" VGA video  display
       card. Earlier CPU's can be used (8088/8086, or 80286), however we
       recommend  you not use less than the 8 MHz 80286;  an EGA monitor
       and display card is the minimum display system that can be used.

          DISC STRUCTURE -

       This disc is divided into the following directories:

            \IMDISP
            \HRB
            \GLORIA
            \DEMO
            \IMVIS
            \2MIL_DLG
            \100K_DLG
            \DMA_DEM
            \NAPP
            \SLAR
            \VICES

       General technical information about the files contained in  these
       directories  is  provided to assist you the user to perform  data
       processing and manipulation on the files.

            \IMDISP -

       This  subdirectory  contains  version 4.4X of  the  IMDISP  image
       display  program  and  associated  utilities;   see  the  program
       documentation   file   for  assistance   and/or   more   detailed

                                       2


       information).  Although  the program can be accessed and run from
       this disc,  we recommend that you copy it to your hard disk drive
       and run it from there.

       This  version of IMDISP has been modified to include support  for
       not  only  the Orchid "extended" VGA card but also  the  Paradise
       "extended"  VGA card.  This version continues to support  generic
       VGA  cards in 640 x 480 x 16 color mode and the  Orchid  Designer
       card  in  640  x 480 x 256 color or 800 x 600 x 256  color  mode.
       However,  it  also now supports the Paradise card in 640 x 480  x
       256 color mode.

       In  order to setup IMDISP to use these graphics cards,  you  must
       set a MS-DOS environment variable prior to executing  IMDISP.  To
       set  the environment variable either at the DOS prompt or with  a
       line in your AUTOEXEC.BAT file, use the appropriate command:

         SET IMDISP=VGA   (to turn on VGA graphics)
         SET IMDISP=ORCHID  (to turn on 480 x 640 Orchid graphics)
         SET IMDISP=ORCHID800  (to turn on 600 x 800 Orchid graphics)
         SET IMDISP=PARADISE (to turn on 480 x 640 Paradise graphics)


            \HRB -

       The  high resolution bathymetric data on this disc represent  the
       most  accurate  and the highest density of bathymetric data  ever
       assembled for release to the general public.  The data consist of
       a sub-sampled 250 Meter "gridded" data set.  These data have been
       collected  utilizing the high resolution  bathymetric  technology
       and  precision navigation available on NOAA's survey  ships.  The
       surveys  were  completed in 1985-1988 time period  utilizing  the
       NOAA Ships Surveyor,  Discoverer, and Davidson. Details regarding
       the   survey   systems,    mapping   capabilities   and   related
       documentation  are available by contacting the NOAA Ocean Mapping
       Program:  Attention Albert (Skip) Theberge,  Chief, Ocean Mapping
       Section,  National Oceanic and Atmospheric  Administration,  6001
       Executive Blvd., Rockville, Md 20852. Phone [phone].


            \GLORIA -

       The  sidescan  sonar  data  were  collected as  part  of  a  U.S.
       Geological  Survey  program to map the  Exclusive  Economic  Zone
       (EEZ).  The  sidescan sonar system used was the GLORIA  (Geologic
       Long-Range  Inclined Asdic) system developed by the Institute  of
       Oceanographic Sciences, U.K.

       The data were collected during the summer of 1984 and are part of
       a survey of the EEZ off California,  Oregon,  and Washington. The
       information and interpretation of the sonar data are published in
       an  Atlas  of  the Exclusive Economic Zone  Western  Conterminous
       United    States,    U.S.    Geological   Survey    Miscellaneous
       Investigations Series I-1792.


                                       3


       The  sonograph  is  a  record  of  the  acoustic   backscattering
       properties of the sea floor produced by a 6.5 KHz frequency sonar
       signal.  The  data  are digital and have been  geometrically  and
       radiometrically  corrected as well as mosaicked and geometrically
       processed,  resulting in an image map of the sea floor. The pixel
       size is 50 meters.  The brighter (whiter) the image the higher is
       the reflectivity of the sea floor.  Pronounced bands on the image
       correspond to the track of the ship.

       The  sidescan sonar data can be used to interpret the  morphology
       and the geologic process operating on the sea floor.


            \DEMO -

       This subdirectory contains several sample images of the functions
       that  will  be available to the PC-user with the release  of  the
       IMVIS (IMage VISualization) program in early 1990.  A menu driven
       program   for  displaying  these  images  is  included  in   this
       subdirectory  and  is accessed from within  the  subdirectory  by
       typing DEMO at your DOS prompt.


            \IMVIS -

       This  subdirectory  contains "colorized" scenes of  the  Monterey
       Landsat   imagery  after  processing  with  the  prototype  IMVIS
       program.  They  are provided here to give the researcher  graphic
       examples  of  analyzing raster data with  8-bit  graphic  display
       board computer systems capable of (and limited to) displaying 256
       colors.   Compare  the information that can be displayed within a
       480 X 512 image, and the very satisfactory results when these 256
       colors are used to display the information contained in a 4725  X
       4054 image.


            \2MIL_DLG -


       This  is  the Central Pacific States (Section 14) subset  of  the
       1:2,000,000  digital  line graph data base.   See the  README.DOC
       file   in  the  \2MIL_DLG  subdirectory  for   more   information
       concerning this data base.


            \100K_DLG -

       This  subdirectory contains 5 USGS regional datasets  surrounding
       Monterey Bay. The data sets are provided in both their "standard"
       and  "optional"  formats.   For more information  concerning  the
       geographic coverage,  and other details concerning these datasets
       see the README.DOC file in this subdirectory.


            \DMA_DEM -

                                       4



       This subdirectory contains four USGS digital elevation models for
       the surrounding Monterey Bay area.   This data was processed with
       the  prototype  IMVIS  software to produce the  DEM#.IMG  "image"
       files  found in the \IMVIS subdirectory.   For  more  information
       concerning the original DEM datasets,  see the README.DOC file in
       the \DMA_DEM subdirectory.


            \NAPP -

       This   subdirectory  contains  three  digitized  National  Aerial
       Photography  Program  (NAPP) scenes of  Monterey,  Ca.,  and  the
       central  Monterey Bay area.  Digitizing was done by the staff  of
       the U.S.  Geological Survey, National Mapping Division, Office of
       Cartographic and Graphic Research, Branch of Analysis, Flagstaff,
       Az.

       Each  scene  has  been  digitized  into  three  eight-bit  files,
       representing the red,  green,  and blue bands respectively.  With
       the appropriate image processing software,  or the IMVIS  program
       tentatively  expected  to  be released in  early  1990,  one  can
       produce  a  "color composite" image(s) as has been done with  the
       Landsat Monterey imagery on this disc (see \LANDSAT and  \IMVIS).
       At  full  display resolution these images provide coverage  at  2
       meter  pixel  ground  resolution.   The  file  naming  convention
       employed  is the NAPP roll number (first 3  digits),  underscore,
       frame  number  (one  to  three  digits),  followed  by  the  band
       identifier (.red,  .grn, or .blu). IMDISP label files (*.LBL) are
       also  provided  for easier access to this  imagery.  For  general
       reference, frame 519-69 is "centered" on Moss Landing, Ca.; frame
       532-6 is to the south,  just north of Marina, Ca.; and frame 525-
       150 is "centered" on Monterey, Ca.


            \SLAR -

       This  subdirectory contains five files along the California Coast
       from San Francisco to below Monterey.   SLAR imagery provides the
       geologist  and other earth scientists with particularly  enhanced
       views   of  geologic  structures,   compared  to  either   aerial
       photography or Landsat imagery.  For additional information about
       the imagery on this disc or SLAR in general,  see the  README.DOC
       file in this subdirectory.


            \VICES -

       This  subdirectory  contains a prototype "subset" of  a  geodetic
       survey  control  point location database being developed  by  the
       National Geodetic Survey.   For more information,  see the README
       file in this subdirectory.




                                       5




                             - ACKNOWLEDGEMENTS -

                             Geoscience Databases

              U.S. Geological Survey U.S. Department of Interior
            12201 Sunrise Valley Drive Reston, Virginia 22092-9998

             Data Contact: Bonnie McGregor Phone: [phone]
              CD-ROM Contact: Jerry McFaul Phone: [phone]
              CD-ROM Contact: Dave Traudt Phone: [phone]


                             Project Coordination

             USGS-NOAA Joint Office for Mapping Research (JOMAR)
               915 National Center Reston, Virginia 22092-9998
              Contact: Millington Lockwood Phone: [phone]



                                IMVIS Software

              Programming: Russ Ambroziak Phone: [phone]
               Programming: Greg Gunnells Phone: [phone]



                               IMDISP Software

        Jet Propulsion Lab National Aeronautics & Space Administration
           4800 Oak Grove Drive Mail Stop 233-208 Pasadena, CA 91109
              Programming: Michael Martin Phone: [phone]


       We  would also like to acknowledge the support and  contributions
       of the following individuals:

         Susan Socks       Valerie Paskevich   Steve Matula
         David Twichell    Gary Hill           Joe Graham



                                  - NOTICE -


       Although  the  data  files  on  this  disc  have  been  processed
       successfully  on  a computer system(s) of the Geological  Survey,
       U.S. Department of the Interior, no warranty expressed or implied
       is made by the Geological Survey regarding utility of the data on
       any other system,  nor shall the fact of distribution  constitute
       any such warranty.



                                       6


























































                                       7