SANA1M.TIF - South Anacapa Island sidescan sonar backscatter image in nearshore Benthic Habitat mapping Project S. California map Series. (UTM 10N, NAD83)

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Frequently anticipated questions:


What does this data set describe?

Title:
SANA1M.TIF - South Anacapa Island sidescan sonar backscatter image in nearshore Benthic Habitat mapping Project S. California map Series. (UTM 10N, NAD83)
Abstract:
The sidescan sonar image of the nearshore seafloor (0 to 100 m water depths) of the South Anacapa area was mosaicked from data collected in 1999 and 2000. A Klein 2000 sidescan system was used for geophysical surveying. A Triton Elics Isis brand side-scan data recording system was used on the cruise. The survey was navigated with a Leica Differential Global Positioning System (DGPS) which provided a ship position with accuracy of 1-5 m in DGPS mode. At times during the cruise differential signal was interrupted. In non-differential mode, the receiver provided a position with 30-50 m accuracy. A KVH Industries Inc. azimuth digital gyro-compass provided ship headings with 0.5 degree accuracy. Navigation data were recorded using Yo-Nav (Gann, 1992). The sidescan fish was towed approximately 30 m above the seafloor. The distance of the fish behind the ship was not known during this survey and must be estimated when the data are processed in order to produce the sidescan image mosaics. The resolution of the processed data mosaics is 0.2 m. The data are presented here at a resolution of 1 m. 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 Nearshore Benthic Habitat Mapping Project. The sidescan data were processed using USGS MIPS sonar processing software (Chavez, 1984). See <http://walrus.wr.usgs.gov/nearshorehab> for more information about this data set.
Supplemental_Information:
Additional information about the field activities from which this data set was derived are available online at http://walrus.wr.usgs.gov/infobank/s/s504sc/html/s-5-04-sc.meta.html
  1. How might this data set be cited?
    Cochrane, Guy R., 2005, SANA1M.TIF - South Anacapa Island sidescan sonar backscatter image in nearshore Benthic Habitat mapping Project S. California map Series. (UTM 10N, NAD83): Open-File Report 2005-1170, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Santa Cruz, CA.

    Online Links:

    This is part of the following larger work.

    Cochrane, Guy R., Conrad, James E., Reid, Jane A., Fangman, Sarah, and Golden, Nadine, 2005, Nearshore Benthic Habitat GIS for the Channel Islands National Marine Sanctuary and Southern California State Fisheries Reserves, Volume Edition 1.0: Open-File Report 2005-1170, U.S. Geological Survey, Coastal and Marine Geology Program, Western Coastal and Marine Geology, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -119.457340
    East_Bounding_Coordinate: -119.330409
    North_Bounding_Coordinate: 34.027837
    South_Bounding_Coordinate: 33.980495
  3. What does it look like?
    http://coastalmap.marine.usgs.gov/metadata/westcoast/socal/cinms/sana1m-thumb.gif (GIF)
    Thumbnail image showing overview of the South Anacapa Island sidescan sonar mosaic.
    http://coastalmap.marine.usgs.gov/metadata/westcoast/socal/cinms/sana1m.gif (GIF)
    Overview image showing overview of the South Anacapa Island sidescan sonar mosaic.
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 01-Mar-1999
    Ending_Date: 11-Mar-1999
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: remote-sensing image
  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 4852 x 11574 x 1, type Pixel
    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: -123.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000
      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 0.999961
      Ordinates (y-coordinates) are specified to the nearest 0.999961
      Planar coordinates are specified in meters
      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 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
  7. How does the data set describe geographic features?
    Band_1
    ObjectID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Value
    Red
    Green
    Blue
    Opacity
    Count

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Guy R. Cochrane
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Guy R. Cochrane
    U.S. Geological Survey
    Geophysicist
    400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 427-4754 (voice)
    (831) 427-4748 (FAX)
    gcochrane@usgs.gov

Why was the data set created?

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 S. California coast.

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: 06-Mar-2000 (process 1 of 55)
    maskim FILES> /work2/guy/sana/san_msk=/work2/guy/sana/san_mos,/work2/guy/sana/san56_ras PARAMS> INSIDE
    Date: 09-Feb-2000 (process 2 of 55)
    xtfin FILES> /work2/guy/sana/san56=/work2/guy/sana/san56.xtf PARAMS> LCHAN=2,RCHAN=1 PARAMS> RATE1
    Date: 09-Feb-2000 (process 3 of 55)
    dk2dk FILES> /work2/guy/sana/san56_dk=/work2/guy/sana/san56 PARAMS> SL=3,SS=1,NL=7872,NS=4096,LINC=1,SINC=1
    Date: 09-Feb-2000 (process 4 of 55)
    navmerge FILES> /work2/guy/sana/san56,/work2/guy/m199sc/m199sc PARAMS> LATLON
    Date: 09-Feb-2000 (process 5 of 55)
    snrshade FILES> /work2/guy/sana/san56_snr=/work2/guy/sana/san56 PARAMS> MIN=1,MAX=254
    Date: 09-Feb-2000 (process 6 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=9,ALTITUDE
    Date: 09-Feb-2000 (process 7 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=51,HEADING
    Date: 09-Feb-2000 (process 8 of 55)
    slr2gr FILES> /work2/guy/sana/san56_snr_sg=/work2/guy/sana/san56_snr PARAMS> PIXRES=0.2,NANGLE=90,FANGLE=0.5,LOFFSET=0,ROFFSET=0
    Date: 09-Feb-2000 (process 9 of 55)
    shade FILES> /work2/guy/sana/san56_snr_sg_sh=/work2/guy/sana/san56_snr_sg PARAMS> MULT,MIN=1,MAX=254,SL=1,EL=7872
    Date: 09-Feb-2000 (process 10 of 55)
    destripe FILES> /work2/guy/sana/san56_snr_sg_sh_ds2=/work2/guy/sana/san56_snr_sg_sh PARAMS> LNL=501,LNS=501,LLOW=1,LHIGH=254,HNL=501,HNS=31,HLOW=1,HHIGH=254
    Date: 09-Feb-2000 (process 11 of 55)
    deltav FILES> /work2/guy/sana/san56_dv=/work2/guy/sana/san56_pr PARAMS> PIXRES=0.2
    Date: 09-Feb-2000 (process 12 of 55)
    snrgeom FILES> /work2/guy/sana/san56_dv=/work2/guy/sana/san56_pr PARAMS> UTM PARAMS> WGS84 PARAMS> ZONE=11,SCALE=0.9996 PARAMS> SLAT=33.984,SLON=-119.4545219613303,ELAT=33.9887897685858,ELON=-119.41256717246,ROTATION=0,PIXRES=0.2
    Date: 09-Feb-2000 (process 13 of 55)
    xtfin FILES> /work2/guy/sana/san56=/work2/guy/sana/san56.xtf PARAMS> LCHAN=2,RCHAN=1 PARAMS> RATE1
    Date: 09-Feb-2000 (process 14 of 55)
    dk2dk FILES> /work2/guy/sana/san56_dk=/work2/guy/sana/san56 PARAMS> SL=3,SS=1,NL=7872,NS=4096,LINC=1,SINC=1 PARAMS> RATE1
    Date: 09-Feb-2000 (process 15 of 55)
    navmerge FILES> /work2/guy/sana/san56,/work2/guy/m199sc/m199sc PARAMS> LATLON
    Date: 09-Feb-2000 (process 16 of 55)
    snrshade FILES> /work2/guy/sana/san56_snr=/work2/guy/sana/san56 PARAMS> MIN=1,MAX=254
    Date: 09-Feb-2000 (process 17 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=9,ALTITUDE
    Date: 09-Feb-2000 (process 18 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=51,HEADING
    Date: 09-Feb-2000 (process 19 of 55)
    slr2gr FILES> /work2/guy/sana/san56_snr_sg=/work2/guy/sana/san56_snr PARAMS> PIXRES=0.2,NANGLE=90,FANGLE=0.5,LOFFSET=0,ROFFSET=0
    Date: 09-Feb-2000 (process 20 of 55)
    shade FILES> /work2/guy/sana/san56_snr_sg_sh=/work2/guy/sana/san56_snr_sg PARAMS> MULT,MIN=1,MAX=254,SL=1,EL=7872
    Date: 09-Feb-2000 (process 21 of 55)
    destripe FILES> /work2/guy/sana/san56_snr_sg_sh_ds2=/work2/guy/sana/san56_snr_sg_sh PARAMS> LNL=501,LNS=501,LLOW=1,LHIGH=254,HNL=501,HNS=31,HLOW=1,HHIGH=254
    Date: 09-Feb-2000 (process 22 of 55)
    deltav FILES> /work2/guy/sana/san56_dv=/work2/guy/sana/san56_pr PARAMS> PIXRES=0.2
    Date: 09-Feb-2000 (process 23 of 55)
    snrgeom FILES> /work2/guy/sana/san56_gm=/work2/guy/sana/san56_dv PARAMS> UTM PARAMS> WGS84 PARAMS> ZONE=11,SCALE=0.9996 PARAMS> LAT=33.984,SLON=-119.4534300323363,ELAT=33.98906246331048,ELON=-119.4136996698049,ROTATION=0,PIXRES=0.2
    Date: 09-Feb-2000 (process 24 of 55)
    xtfin FILES> /work2/guy/sana/san56=/work2/guy/sana/san56.xtf PARAMS> LCHAN=2,RCHAN=1 PARAMS> RATE1
    Date: 09-Feb-2000 (process 25 of 55)
    dk2dk FILES> /work2/guy/sana/san56_dk=/work2/guy/sana/san56 PARAMS> SL=3,SS=1,NL=7872,NS=4096,LINC=1,SINC=1
    Date: 09-Feb-2000 (process 26 of 55)
    navmerge FILES> /work2/guy/sana/san56,/work2/guy/m199sc/m199sc PARAMS> LATLON
    Date: 09-Feb-2000 (process 27 of 55)
    snrshade FILES> /work2/guy/sana/san56_snr=/work2/guy/sana/san56 PARAMS> MIN=1,MAX=254
    Date: 09-Feb-2000 (process 28 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=9,ALTITUDE
    Date: 09-Feb-2000 (process 29 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=51,HEADING
    Date: 09-Feb-2000 (process 30 of 55)
    slr2gr FILES> /work2/guy/sana/san56_snr_sg=/work2/guy/sana/san56_snr PARAMS> PIXRES=0.2,NANGLE=90,FANGLE=0.5,LOFFSET=0,ROFFSET=0
    Date: 09-Feb-2000 (process 31 of 55)
    shade FILES> /work2/guy/sana/san56_snr_sg_sh=/work2/guy/sana/san56_snr_sg PARAMS> MULT,MIN=1,MAX=254,SL=1,EL=7872
    Date: 09-Feb-2000 (process 32 of 55)
    destripe FILES> /work2/guy/sana/san56_snr_sg_sh_ds2=/work2/guy/sana/san56_snr_sg_sh PARAMS> LNL=501,LNS=501,LLOW=1,LHIGH=254,HNL=501,HNS=31,HLOW=1,HHIGH=254
    Date: 09-Feb-2000 (process 33 of 55)
    deltav FILES> /work2/guy/sana/san56_dv=/work2/guy/sana/san56_pr PARAMS> PIXRES=0.2
    Date: 09-Feb-2000 (process 34 of 55)
    snrgeom FILES> /work2/guy/sana/san56_gm=/work2/guy/sana/san56_dv PARAMS> UTM PARAMS> WGS84 PARAMS> ZONE=11,SCALE=0.9996 PARAMS> SLAT=33.984,SLON=-119.4534300323363,ELAT=33.98906817145581,ELON=-119.4141338955398,ROTATION=0,PIXRES=0.2
    Date: 09-Feb-2000 (process 35 of 55)
    xtfin FILES> /work2/guy/sana/san56=/work2/guy/sana/san56.xtf PARAMS> LCHAN=2,RCHAN=1 PARAMS> RATE1
    Date: 09-Feb-2000 (process 36 of 55)
    dk2dk FILES> /work2/guy/sana/san56_dk=/work2/guy/sana/san56 PARAMS> SL=3,SS=1,NL=7872,NS=4096,LINC=1,SINC=1
    Date: 09-Feb-2000 (process 37 of 55)
    navmerge FILES> /work2/guy/sana/san56,/work2/guy/m199sc/m199sc PARAMS> LATLON
    Date: 10-Feb-2000 (process 38 of 55)
    navmerge FILES> /work2/guy/sana/san56,/work2/guy/m199sc/m199sc PARAMS> LATLON
    Date: 06-Mar-2000 (process 39 of 55)
    navmerge FILES> /work2/guy/sana/san56,/work2/guy/m199sc/m199sc PARAMS> LATLON
    Date: 06-Mar-2000 (process 40 of 55)
    snrshade FILES> /work2/guy/sana/san56_snr=/work2/guy/sana/san56 PARAMS> MIN=1,MAX=254
    Date: 06-Mar-2000 (process 41 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=9,ALTITUDE
    Date: 06-Mar-2000 (process 42 of 55)
    navflt FILES> /work2/guy/sana/san56_snr PARAMS> NR=51,HEADING
    Date: 06-Mar-2000 (process 43 of 55)
    slr2gr FILES> /work2/guy/sana/san56_snr_sg=/work2/guy/sana/san56_snr PARAMS> PIXRES=0.2,NANGLE=90,FANGLE=0.5,LOFFSET=0,ROFFSET=0
    Date: 06-Mar-2000 (process 44 of 55)
    shade FILES> /work2/guy/sana/san56_snr_sg_sh=/work2/guy/sana/san56_snr_sg PARAMS> MULT,MIN=1,MAX=254,SL=1,EL=7872
    Date: 06-Mar-2000 (process 45 of 55)
    destripe FILES> /work2/guy/sana/san56_snr_sg_sh_ds2=/work2/guy/sana/san56_snr_sg_sh PARAMS> LNL=501,LNS=501,LLOW=1,LHIGH=254,HNL=501,HNS=31,HLOW=1,HHIGH=254
    Date: 06-Mar-2000 (process 46 of 55)
    deltav FILES> /work2/guy/sana/san56_dv=/work2/guy/sana/san56_pr PARAMS> PIXRES=0.2
    Date: 06-Mar-2000 (process 47 of 55)
    snrgeom FILES> /work2/guy/sana/san56_gm=/work2/guy/sana/san56_dv PARAMS> UTM PARAMS> WGS84 PARAMS> ZONE=11,SCALE=0.9996 PARAMS> SLAT=33.984,SLON=-119.4534300390195,ELAT=33.98906246331048,ELON=-119.4136996610798,ROTATION=0,PIXRES=0.2
    Date: 06-Mar-2000 (process 48 of 55)
    digmos FILES> /work2/guy/sana/san56_mos=/work2/guy/sana/san56_gm PARAMS> PROJECTION PARAMS> SLAT=33.982,SLON=-119.457,ELAT=34.022,ELON=-119.333
    Date: 06-Mar-2000 (process 49 of 55)
    digmos FILES> /work2/guy/sana/san56_shf=/work2/guy/sana/san56_mos PARAMS> MANUAL PARAMS> ONL=23524,ONS=57793 PARAMS> ISL=1,ISS=208,IEL=23524,IES=57793,OSL=1,OSS=1
    Date: 06-Mar-2000 (process 50 of 55)
    maskim FILES> /work2/guy/sana/san56_msk=/work2/guy/sana/san56_mos,/work2/guy/sana/san56_ras PARAMS>
    Date: 06-Mar-2000 (process 51 of 55)
    digmos FILES> /work2/guy/sana/san_msk=/work2/guy/sana/san56_msk PARAMS> ISL=1,ISS=1,IEL=23524,IES=57793,OSL=1,OSS=1 PARAMS> OUTPUT
    Date: 06-Mar-2000 (process 52 of 55)
    filter FILES> /work2/guy/sana/san_fz3=/work2/guy/sana/san_mos PARAMS> LPFZ PARAMS> NL=3,NS=3,LOW=1,HIGH=255,PERCENT=0,MULT=1
    Date: 06-Mar-2000 (process 53 of 55)
    filter FILES> work2/guy/sana/san_fz5=/work2/guy/sana/san_fz3 PARAMS> LPFZ PARAMS> NL=7,NS=7,LOW=1,HIGH=255,PERCENT=0,MULT=11
    Date: 06-Mar-2000 (process 54 of 55)
    filter FILES> /work2/guy/sana/san_fz7=/work2/guy/sana/san_fz5 PARAMS> LPFZ PARAMS> NL=7,NS=7,LOW=1,HIGH=255,PERCENT=0,MULT=1
    Date: 06-Mar-2000 (process 55 of 55)
    scale FILES> /work2/guy/sana/sana1m=/work2/guy/sana/san_fz7 PARAMS> NL=4192,NS=11339
  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?
    Accuracy unknown
  2. How accurate are the geographic locations?
    On the order of 10 meters
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Completeness unknown
  5. How consistent are the relationships among the observations, including topology?
    Logical Consistency untested.

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:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    Guy R. Cochrane
    U.S. Geological Survey
    Geophysicist
    400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 427-4754 (voice)
    (831) 427-4748 (FAX)
    gcochrane@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), 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 USGS in the use of these data or related materials.
    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    This image is available as a GeoTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image.

Who wrote the metadata?

Dates:
Last modified: 12-Jun-2006
Last Reviewed: 07-Jun-2006
Metadata author:
Guy R. Cochrane
U.S. Geological Survey
Geophysicist
400 Natural Bridges Drive
Santa Cruz, CA
USA

(831) 427-4754 (voice)
(831) 427-4748 (FAX)
gcochrane@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/westcoast/socal/cinms/sana1m.tif.faq.html>
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