
Multibeam (SeaBeam2000) Bathymetric Data Submitted to NGDC in September 2002
============================================================================

Documented by Stuart M. Smith (SIO Geological Data Center, retired)

	Date: 18 September 2002

This document contains the following sections:

	 1. Data Set Overview
	 2. Data Set Structure
	 3. List of Cruise Legs
	 4. Metadata Files (Cruise-leg and Data Info files)
	 5. Multibeam Data files
	 6. Data Quality (type of scientific program)
	 7. SeaBeam2000 System Specifications
	 8. SIO Swath_Bathy Data Format (MBSYSTEM format #32)
	 9. Processing Paths and Programs (SIO Swath_Bathy and MBSYSTEM)
	10. 60-beam Ping to 120-beam Ping Conversions
	11. Sound Velocity Profiles 
	12. SIO Geological Data Center Contact
	13. Acknowledgments

    Table 1: R/V Melville SeaBeam cruise legs, 1992 - 1999
    Table 2: Cruise-leg Metadata File Example
    Table 3: Data-file Info File Example


 1. Data Set Overview
 --------------------
This data set contains multibeam bathymetry collected with a SeaBeam
2000 echosounder system during 63 cruise legs on research ship R/V
Melville, operated by the Scripps Institution of Oceanography (SIO).
These cruises took place between July 1992, when the SeaBeam2000 system
was installed, and the end of 1999. With the exception of 8 legs in the
Indian Ocean, all of these data were collected in the Pacific.

The multibeam data files are in the SIO Swath_Bathy format, readable
with the MBSYSTEM package of programs as MB Format 32.  Most files
contain data from one ship-day, starting a few minutes before GMT
midnight.  A "Cruise-leg" metadata file is present for each cruise leg
and a "Data-file Info" file accompanies each data file with the same
name.

Navigation control, using the WGS-84 datum, was GPS for all cruises:
the C/A code until September 1995 and the higher accuracy P-code
thereafter.  Sound velocity profiles, calculated from daily XBT drops
and Carter depth correction tables, were used to make beam refraction
corrections but the depths are reported in uncorrected meters (assumed
sound velocity of 1500meters/second). Depths have been corrected for
ship draft but there are no tidal corrections applied.

Acoustic intensity (sidescan) data were logged at the same time as the
bathymetric data.  These acoustic data are not included in this
dataset.  Contact the SIO Geological Data Center (see section 12) for
availability.


 2. Data Set Structure
 ---------------------
Bathymetric data and other information for each leg are located in
separate directories identified by the cruise identifier.  The
identifiers consist of a four character cruise abbreviation, two
character leg number, and two character ship ID, e.g. PHNX03MV.

The following files are in each directory (file names):

  * General Information File - this file  (AA.README.SBtoNGDCnotes) [ASC]

  * SIO Swath_bathy Format Description (swath_bathy_doc.rtf) [RTF]

  * Cruise-leg metadata file  (metadata.<cruiseID>) [ASC]

  * Trackplot, page-size plot file  (<cruiseID>.sumplot.ps) [PS]

  * Multibeam data files  (SB<xxxx>.<date>) [BIN]

  * Data-file Info files  (SB<xxxx>.<date>.inf)  [ASC]

  Modes:
	[ASC] = ASCII, end-of-line delimited by newline character
	[RTF] = Rich Text Format
	[BIN] = Binary, high-endian byte order
	[PS]  = PostScript


 3. Cruise-legs with Multibeam (SeaBeam2000) Bathymetry Collected on
 -------------------------------------------------------------------
       R/V Melville, 1992 - 1999, Submitted to NGDC in August 2002
       -----------------------------------------------------------

Listed in cronological order. Numbers in parentheses are "data quality
estimates" (see Section 6).  See Table 1 for dates and geographical
boundaries.

 PHNX02MV (3) PHNX03MV (5) PHNX04MV (1)
 
 GLOR00MV (1) GLOR02MV (3) GLOR03MV (5) GLOR04MV (5) GLOR05MV (3)
 GLOR06MV (3) GLOR07MV (5) GLOR08MV (3)
 
 REM-01MV (2) REM-02MV (2)
 
 WEST00MV (1) WEST01MV (5) WEST03MV (3) WEST04MV (2) WEST05MV (2) 
 WEST06MV (3) WEST08MV (3) WEST09MV (5) WEST10MV (5) WEST11MV (2)
 WEST12MV (2) WEST13MV (2) WEST15MV (3)
 
 BMRG01MV (4) BMRG02MV (4) BMRG03MV (3) BMRG04MV (2) BMRG05MV (4)
 BMRG06MV (5) BMRG07MV (2) BMRG08MV (5) BMRG09MV (4)
 
 SOJN01MV (5) SOJN02MV (3) SOJN04MV (2) SOJN05MV (4) SOJN06MV (2)
 SOJN07MV (5) SOJN08MV (2) SOJN09MV (2)
 
 NV9704MV (1)
 
 RSCN01MV (5)
 
 PANR01MV (5) PANR04MV (3) PANR05MV (4)
 
 NPAL98MV (3)
 
 PACS03MV (2)
 
 AVON01MV (4) AVON02MV (3) AVON05MV (2) AVON06MV (5) AVON07MV (3)
 AVON08MV (3) AVON09MV (3) AVON10MV (3) AVON11MV (3) AVON12MV (2)
 
 LWAD99MV (2)
 
 MOCE05MV (2)
 
 CORE01MV (1)


Per the policy of the SIO Geological Data Center Steering Committee, a
chief scientist may place a proprietary hold on data, nominally for a
two-year period after the end of a cruise leg.  This period may be
extended to permit a student to finish his or her thesis, because of
later follow up work in the same region or for other reasons.  For the
current status of cruise-legs on proprietary hold, contact the SIO
Geological Data Center (Section 12).

Multibeam data from the following cruise legs on R/V Melville from 1992
through 1999 are on proprietary hold and are *not* included in this
data set:

 GLOR01MV (4)  GLOR09MV (4)

 WEST02MV (4)  WEST07MV (4)  WEST14MV (4)

 PANR02MV (4)  PANR03MV (4)

 AVON03MV (3)  AVON04MV (5)

 OXMZ01MV (5)
 
Systematic errors are present in data from the following cruises
and they are not being sent to NGDC at this time:

 PHNX00MV (1)  PHNX01MV (5) 

 PANR06MV (4)  PANR07MV (3)  PANR08MV (2)


 4. Metadata Files
 -----------------
Each directory contains a Cruise-leg metadata file as well as Info Data
files for each of the multibeam data files.  The Cruise-leg metadata
file is named "metadata.<cruiseID>" and is in a format being developed
by the SIO Geological Data Center.  It contains metadata records in the
form of:
	parameter_name,parameter_value,narrative_label
e.g.
	"bathymetric sensor",bathy_sensor,"SEABEAM 2000 w/sidescan"

An example of a Cruise-leg metadata file is in Table 2 at the end of
this document.

A "Data-file Info" file accompanies each data file with the same name.
It contains the output of the MBSYSTEM 'mbinfo' program, listing
information such as beginning and end times and positions, ping
statistics, programs used to modify the file, etc.  This file also
contains file pedigree information added by the SIO Swath_Bathy
package.

The Data-file Info files were created with the MBSYSTEM program 'mbinfo',
version 5.0beta18 with the -C and -G options. (The -C option lists all 
the comments, such as programs that modified the data, in inverse
chronological order.  The -G option ignores "bad" navigation in
determining the data file's geographical boundaries.)  The info files
have the same name as their data file with an added ".inf" suffix. See
Table 3 for an example.


 5. Multibeam Data Files
 -----------------------
The data files are in the SIO Swath_Bathy format, readable with the
MBSYSTEM package of programs as MB Format 32.  Most files contain data
from one ship-day, starting a few minutes before GMT midnight. File
names are in the form of SB<xxxx>.<date>, where <xxxx> varies depending
on how the file was processed and <date>, which is the date when the
file ends.  If there are more than one file in a day the additional
files will have ".1", ".2", etc appended to the file name.  If the file
was editted with the 'mbinfo' program, an additional ".ed" suffix will
be present.  e.g.

	SBfixavg.94dec10	
	SBfixavg.94dec10.1	
	SBunflagfix.99may01.ed
	SBunflagfix.99may01.1.ed

The following file prefixes will be found in the data set:

	SBmrg  SBdespike  SBfix  SBavg  SBfixavg  SBedit

	SBunflagfix  SBunflagfixavg  SBunflagfxvg  SBunflgfxavg

These names reflect what processing has been done on the file as 
listed in the corresponding Data-file Info file for each data file.
See Section 9 for a brief description of each program used in the
processing.


 6.Data Quality
 --------------
It has been SIO policy to maximize the collection of multibeam
bathymetric data whenever and whereever possible with the result that
multibeam data have been collected on nearly all R/V Melville cruise
legs since 1992.  Automatic data logging has been done in unattended
mode on transit and other non-geological/ geophysical legs in addition
to those on which multibeam surveying was an important component or the
main scientific activity.  This policy has produced a substantial
amount of data, but of varying quality.

The SIO Shipboard Computer Group technicians monitor the multibeam
echosounding and data logging systems on board and check that the
sequence of daily auto-processing tasks completes successfully.  They
are able to to repair some data problems, as are the onshore staff of
the Geological Data Center which, during this period, did the final
processing and archiving of the data.  However it is the responsibility
of the scientific party to maintain an underway watch, alert the
onboard tech if there are problems, fine tune the settings of the
echounder and other systems and ping-edit the data.  Therefore a rough
measure of the operational quality of data collection on a cruise leg
can be made by examining what type of scientific operations were the
main emphasis and the nature of the scientific party:

On a quality scale of 1 (lowest) to 5 (highest): 

        1 = Test trip. Generally only a day or two in length,
            usually near San Diego, California. Data may be
            incomplete and have glitches due to testing and
            non-standard instrument settings. No data editing.
	    Sound velocity profiles(SVP) may not be updated
	    frequently.

        2 = Transit or scientific program with no underway
            geophysical component.  Continuous underway
            watch not maintained. Instruments set to generic
	    settings and may be adjusted from time to time
	    by techs. No data editing. SVP may not be updated daily.

        3 = Geological/geophysical program with multibeam surveying 
	    as an ancillary component. U/W watch usually 
            kept but watchstanders may not be experienced in 
	    adjusting instruments. Daily SVP updating. Data 
	    editing may, or may not, be done.

        4 = Multibeam survey is primary function. Continuous
            U/W watch, SVP updates and instrument monitoring. 
	    Data editing often done by scientific party, especially
            for part of leg in science area.

	5 = Multibeam survey is primary function. Instruments
	    continually monitored by watchstanders supervised
	    by experienced scientist. SVP updates daily. SIO 
	    tech or scientific party member with equivalent 
	    experience assigned to daily data editing and processing.

Quality estimates for each cruise leg are included in the cruise list
in Section 3 above.


 7. SB2000 system specifications
 -------------------------------
Specifications for the SeaBeam2000 system received from the
manufacturers, SeaBeam Inc., in January 2002:

	Number of beams (shallow mode)			 60
	Number of beams (intermed. & deep modes)	120
	Individual beam width fore/aft:			 2deg
			athwartships:			 2deg (w/ 1deg overlap)
	Depth Range					10-11,000 meters
	Swath width (surface to 4600m)			120deg
	Swath width (4600m to 11,000m)	 		 90deg
	Transmit Beams (for full swath) 		1
	Transmit Beamwidth (athwartship, 0.3dB)		100deg
			   (athwartship, 0.8db)		120deg
	Receive beamwidth (fore & aft)			 15deg
	Pulse length					2 to 20 msec
	Fequency					12 kHz
	Source level @ +/-30deg				234dBuPA/m
	Maximum Pitch					+/- 7.5deg
	Maximum Roll					+/- 10deg


 8. SIO Swath_bathy Data Format (MBSYSTEM format #32)
 ----------------------------------------------------
The data files are in the SIO Swath_Bathy format designed by James S.
Charters of the SIO Shipboard Computer Group for multibeam data
collected by SIO. It can handle data from the first "Classic" 16-beam
SeaBeam system that was on the R/V Thomas Washington as well as these
SeaBeam2000 data from R/V Melville.  The format description is
contained in the file "Swath_Bathy_Format_Description.rtf" which is
in Rich Text Format.

This data format can be read by MBSYSTEM, a package of programs written
by David Caress and Dale Chayes, Lamont-Doherty Earth Observatory
(website: www.ldeo.columbia.edu/MB-System/MB-System.intro.html) as
MBSYSTEM Format 32.


 9. Processing Paths and Programs (Swath_Bathy and MBSYSTEM)
 -----------------------------------------------------------
The following SIO Swath_Bathy programs were used in processing
the multibeam data. Look at the Data-file Info (.inf) file
for each data file to see which programs were used on that
file. Names in parentheses are prefixes of files modified by
that program.

 Standard Processing:
 -------------------
  sb2k_convert	- convert SeaBeam vendor format log file (sb2000) 
		  to Swath_Bathy file (SBraw)

  swath_merge	- merge SBraw file with navigation (navbin) to
		  make SBmrg file

  swath_fix	- despiker, removes spikes and pits (SBmrg to
		  SBfix file)

  swath_boxavg	- 9-beam box average (SBfix to SBfixavg file)

  sb2k_mbsysfix	- convert 60-beam pings to 120-beam pings

  swath_unflag	- unflags beams flagged as bad by SBI software,
		  (creates SBunflag file)

 Data Repair:
 -----------
  swath_navadj	  - adjust navigation: used on BMRG08MV;GLOR03MV;
                    SOJN01MV; WEST{01,09,10}MV

  swath_rmhits	  - remove beams (or pings?): used only on GLOR01MV

  swath_rmping	  - remove pings: used only on PHNX01MV

  swath_unrollbias  - replace roll bias: used on AVON03MV; PANR01MV;
                    West{00,01}MV

 Special Purpose:
 ---------------
  swath_2_truedepth - convert uncorrected to true depth: used only 
                    on BMRG01MV

  swath_boxavg_u	  - variation of swath_boxavg: used only on GLOR02MV


The following programs from the MBSYSTEM package were also used
on some files:
	mbcopy  mbedit  mbnavedit mbclean

Refer to the MBSYSTEM documentation for specific information about
each of these programs.


10. 60-beam Ping to 120-beam Ping Conversions
 --------------------------------------------
The SeaBeam 2000 outputs ping data that contain 120-beam records in
Intermediate and Deep modes, but only 60-beam records in Shallow mode.
MBSYSTEM could not properly handle SIO SwathBathy format (MB format #32)
files with 60-beam pings at the time these data were collected. Therefore 
these files have been reformatted to place the 60 beams into the middle 
of 120-beam records using program 'sb2k_mbsysfix' and is so noted in 
the corresponding Data-file Info file. (The 60-beam problem has 
reportedly been fixed in the current release of MBSYSTEM.)


11. Sound Velocity Profiles
---------------------------
As standard operating procedure, a new sound velocity profile is
entered at least once per day or if the sea surface temperature changes
by 2 degC.  Profiles are generated by combining velocity data
calculated from XBT (eXpendable BathyThermograph) data from the surface
to 400 or 1830 meters depth (depending on the XBT probe type) and
velocities calculated from the Carter Tables (Echo-Sounding Correction
Tables, 3rd ed., NP139, Hydrographic Dept., Ministry of Defence, UK)
for the deeper section of the profile. Surface velocity, calculated
from continuously recorded sea-surface temperature and conductivity, is
added to the profile when that sensor is operating.


12. Data Contact at the Scripps Institution of Oceanography
-----------------------------------------------------------
	Stephen P. Miller, Head
	Geological Data Center
	Scripps Institution of Oceanography
	9500 Gilman Drive
	La Jolla, CA  92093-0220
	
	Phone: 858-534-1898
	  Fax: 858-534-0784
	Email: spmiller@ucsd.edu

	  Web: http://SIOExplorer.ucsd.edu


13. Acknowledgments
-------------------
These multibeam data were collected on SIO cruises staffed by members
of the SIO Shipboard Computer Group and processed by the Geological
Data Center.  Both groups are part of the Shipboard Technical Support
Group which is in the Ship Operations and Technical Support Division.
The STS Resident Technician Group also assisted with the data
collection on many cruises.

During the period these data were collected, members of the Shipboard 
Computer Group, headed by Ron Moe, included James Charters,who with Moe, 
wrote most of the computer code used to collect and auto-process the 
data, as well as John Chatwood, Earl Heckman, Jeff Skinner, Dan Jacobson 
and Mark Silver. Post-cruise data processing and archiving were done 
by Uta Peckman and Ginny Wells of the Geological Data Center, headed 
by Stuart Smith (Stephen P. Miller is now head of GDC).  Graduate 
students Barry Eakins and Christina Massell assisted with collection 
and processing on a number of cruise legs.

Special thanks go to all those members of the scientific parties who
stood underway watches, night and day, on seas rough and calm.

#


#
######################################################################################
#  TABLE 1:  Cruise-legs on R/V Melville with SeaBeam (multibeam) Data, 1992 - 1999  #
######################################################################################
#
#   (MV*) = On proprietary hold - not included in data set.
#   (MVx) = Data errors - not included in data set.
#
#-------------------------------------------------------------------------------------------------|
# Data types : tm=time; d(s,m)=depth(uncorr.sec, corr.mt); m(g,a)=mag(field,anom); 
# Data types : g(f,a)=grav(field,freeair); sp=seismic reflection; 35= 3.5khz depth; 
# Data types : sb=sea beam(multibeam) depth
#-------------------------------------------------------------------------------------------------|
#      |  |                                    |  |    Cruise     |  |                            |
#Cruise|  |------- Cruise Lat/Lon Bounds ------|  |    Dates      |  |       Data Types           |
#  ID  |  | Top      Bottom     Left     Right |  | Beg      End  |  |------ Collected -----------|
#-------------------------------------------------------------------------------------------------|
PHNX00MVx 32-43.0N  32-31.0N 118-09.0W 117-14.0W  19920629 19920630  tm.ds......................sb.
PHNX01MVx 32-40.0N  15-51.0N 118-08.0W  98-45.0W  19920707 19920716  tm.ds....mg.ma.............sb.
PHNX02MV  19-04.0N   9-23.0N 104-37.0W  99-55.0W  19920718 19920814  tm.ds....mg.ma.......35....sb.
PHNX03MV  32-42.0N  18-21.0N 121-00.0W 104-18.0W  19920818 19920902  tm.ds....mg.ma.............sb.
PHNX04MV  32-42.0N  32-28.0N 118-14.0W 117-15.0W  19920903 19920905  tm.ds......................sb.
GLOR00MV  33-17.0N  31-37.0N 120-45.0W 117-55.0W  19920926 19920930  tm.ds....mg.ma.............sb.
GLOR01MV* 32-41.0N   1-09.0N 125-22.0W  97-49.0W  19921006 19921101  tm.ds....mg.ma.......35....sb.
GLOR02MV  16-50.0N  27-11.0S 116-47.0W  99-54.0W  19921105 19921210  tm.ds....mg.ma.gf.ga.35....sb.
GLOR03MV  14-49.0S  27-09.0S 149-35.0W 109-27.0W  19921211 19930106  tm.ds....mg.ma.gf.ga.35....sb.
GLOR04MV  13-21.0S  17-33.0S 149-35.0W 117-45.0W  19930111 19930203  tm.ds....mg.ma.gf.ga.......sb.
GLOR05MV  17-28.0S  32-18.0S 149-35.0W 108-13.0W  19930208 19930321  tm.ds....mg.ma.gf.ga.35....sb.
GLOR06MV  23-33.0S  33-28.0S 109-50.0W  71-38.0W  19930322 19930426  tm.ds....mg.ma.gf.ga.35....sb.
GLOR07MV  24-29.0S  33-10.0S 111-14.0W  71-38.0W  19930509 19930528  tm.ds....mg.ma.gf.ga.......sb.
GLOR08MV  16-50.0N  27-09.0S 117-31.0W  99-55.0W  19930531 19930701  tm.ds....mg.ma.............sb.
GLOR09MV* 32-42.0N   7-41.0N 117-15.0W  96-51.0W  19930705 19930804  tm.ds....mg.ma.gf.ga.......sb.
REM-01MV  48-20.0N  32-36.0N 130-46.0W 117-15.0W  19930809 19930907  tm.ds......................sb.
REM-02MV  48-43.0N  32-38.0N 131-16.0W 117-15.0W  19930909 19931006  tm.ds....mg.ma.............sb.
WEST00MV  32-44.0N  32-32.0N 118-05.0W 117-14.0W  19931117 19931120  tm.ds....mg.ma.gf.ga.35.sp.sb.
WEST01MV  32-42.0N  18-43.0S 149-35.0W 111-45.0W  19931123 19931230  tm.ds....mg.ma.gf.ga.......sb.
WEST02MV* 17-31.0S  57-53.0S 174-46.0E 123-11.0W  19940104 19940207  tm.ds....mg.ma.gf.ga.......sb.
WEST03MV  20-13.0S  57-06.0S 174-47.0E  70-10.0W  19940213 19940321  tm.ds....mg.ma.............sb.
WEST04MV  14-34.0S  20-13.0S 149-35.0W  70-10.0W  19940327 19940513  tm.ds......................sb.
WEST05MV  17-28.0S  27-27.0S 153-04.0E 147-51.0W  19940519 19940624  tm.ds......................sb.
WEST06MV  15-22.0S  27-27.0S 153-04.0E 169-59.0W  19940830 19940929  tm.ds....mg.ma.gf.ga....sp.sb.
WEST07MV* 21-09.0S  54-14.0S 171-10.0E 127-14.0W  19941004 19941112  tm.ds....mg.ma.gf.ga.......sb.
WEST08MV  31-56.0S  50-22.0S 114-34.0E 170-49.0E  19941116 19941205  tm.ds....mg.ma.gf.ga.......sb.
WEST09MV  31-56.0S  51-05.0S  91-24.0E 119-11.0E  19941210 19950122  tm.ds....mg.ma.gf.ga.......sb.
WEST10MV  31-55.0S  50-23.0S  87-56.0E 147-27.0E  19950128 19950312  tm.ds....mg.ma.gf.ga.......sb.
WEST11MV  42-54.0S  54-32.0S 141-26.0E 147-29.0E  19950318 19950414  tm.ds......................sb.
WEST12MV   8-00.0S  43-18.0S 147-19.0E 149-35.0W  19950418 19950505  tm.ds....mg.ma.............sb.
WEST13MV  16-50.0N  17-33.0S 149-36.0W  99-54.0W  19950512 19950621  tm.ds....mg.ma.............sb.
WEST14MV* 32-42.0N   9-58.0N 117-15.0W  95-43.0W  19950622 19950705  tm.ds....mg.ma.............sb.
WEST15MV  44-57.0N  32-38.0N 131-22.0W 117-15.0W  19950711 19950812  tm.ds....mg.ma.............sb.
BMRG01MV  32-42.0N  18-40.0S 149-45.0W 109-09.0W  19951015 19951123  tm.ds....mg.ma.gf.ga.......sb.
BMRG02MV  17-33.0S  43-57.0S 176-55.0W 149-35.0W  19951128 19951210  tm.ds....mg.ma.gf.ga.......sb.
BMRG03MV  43-57.0S  54-11.0S 170-30.0E 176-26.0W  19951210 19960103  tm.ds....mg.ma.............sb.
BMRG04MV  42-54.0S  47-20.0S 147-20.0E 170-49.0E  19960107 19960111  tm.ds....mg.ma.............sb.
BMRG05MV  31-56.0S  50-24.0S 114-19.0E 147-28.0E  19960116 19960217  tm.ds....mg.ma.gf.ga.......sb.
BMRG06MV  19-57.0S  43-05.0S  77-02.0E 118-34.0E  19960222 19960414  tm.ds....mg.ma.gf.ga.......sb.
BMRG07MV   9-18.0S  20-19.0S 118-32.0E 178-25.0E  19960419 19960503  tm.ds....mg.ma.............sb.
BMRG08MV  14-17.0S  26-13.0S 178-25.0E 170-42.0W  19960507 19960608  tm.ds....mg.ma.gf.ga....sp.sb.
BMRG09MV  32-30.0N  18-48.0S 171-52.0W 117-20.0W  19960611 19960629  tm.ds....mg.ma.gf.ga.35....sb.
SOJN01MV  32-42.0N  20-15.0S 149-35.0W 110-01.0W  19960907 19961021  tm.ds....mg.ma.gf.ga.......sb.
SOJN02MV  17-14.0S  33-02.0S 149-35.0W  71-37.0W  19961024 19961210  tm.ds....mg.ma.............sb.
SOJN04MV  19-45.0S  35-09.0S  18-08.0E 115-41.0E  19970108 19970213  tm.ds......................sb.
SOJN05MV  31-55.0S  45-25.0S 114-24.0E 147-30.0E  19970219 19970302  tm.ds....mg.ma.gf.ga....sp.sb.
SOJN06MV  42-54.0S  56-55.0S 139-51.0E 147-29.0E  19970307 19970406  tm.ds....mg.ma.............sb.
SOJN07MV  37-52.0S  43-39.0S 144-34.0E 149-55.0E  19970410 19970417  tm.ds....mg.ma.gf.ga.......sb.
SOJN08MV  17-33.0S  39-18.0S 144-39.0E 149-35.0W  19970514 19970526  tm.ds....mg.ma.............sb.
SOJN09MV  32-37.0N  18-11.0S 149-35.0W 109-55.0W  19970531 19970630  tm.ds......................sb.
NV9704MV  46-15.0N  32-42.0N 125-38.0W 117-15.0W  19971006 19971010  tm.ds..........gf.ga.......sb.
RSCN01MV  33-20.0N  32-38.0N 117-41.0W 117-15.0W  19971013 19971017  tm.ds......................sb.
PANR01MV  32-42.0N  14-40.0N 119-40.0W  99-55.0W  19971102 19971211  tm.ds....mg.ma.............sb.
PANR02MV* 16-50.0N  12-04.0S 100-00.0W  77-09.0W  19971214 19971229  tm.ds....mg.ma.............sb.
PANR03MV* 12-02.0S  33-02.0S  77-35.0W  71-14.0W  19971231 19980112  tm.ds....mg.ma.......35....sb.
PANR04MV  27-09.0S  43-04.0S 109-27.0W  71-38.0W  19980114 19980302  tm.ds....mg.ma.gf.ga.35....sb.
PANR05MV  17-31.0S  32-00.0S 149-35.0W 109-27.0W  19980305 19980413  tm.ds....mg.ma.............sb.
PANR06MVx 21-18.0N  19-49.0S 157-54.0W 112-53.0W  19980417 19980607  tm.ds....mg.ma.......35....sb.
PANR07MVx 21-18.0N  19-17.0N 159-11.0W 157-52.0W  19980612 19980620  tm.ds......................sb.
PANR08MVx 32-42.0N  21-15.0N 157-39.0W 117-15.0W  19980621 19980630  tm.ds......................sb.
NPAL98MV  37-49.0N  32-36.0N 122-41.0W 117-15.0W  19980706 19980718  tm.ds..........gf.ga.......sb.
PACS03MV  32-42.0N   2-58.0S 125-21.0W 117-15.0W  19980908 19980929  tm.ds......................sb.
AVON01MV  33-51.0N   7-05.0N 171-11.0E 117-15.0W  19990106 19990122  tm.ds....mg.ma.............sb.
AVON02MV   7-14.0N  14-26.0S 170-51.0E 168-46.0W  19990124 19990309  tm.ds....mg.ma.gf.ga.......sb.
AVON03MV* 13-50.0S  14-39.0S 171-46.0W 168-06.0W  19990309 19990318  tm.ds....mg.ma.gf.ga.......sb.
AVON04MV* 12-18.0S  32-12.0S 177-13.0W 170-27.0W  19990321 19990413  tm.ds....mg.ma.gf.ga....sp.sb.
AVON05MV  21-18.0N  13-50.0S 171-46.0W 157-54.0W  19990415 19990423  tm.ds....mg.ma.............sb.
AVON06MV  30-31.0N  21-06.0N 179-25.0W 156-02.0W  19990428 19990519  tm.ds....mg.ma.gf.ga.35....sb.
AVON07MV  31-08.0N  21-14.0N 159-21.0W 157-53.0W  19990524 19990615  tm.ds....mg.ma.............sb.
AVON08MV  46-11.0N  21-14.0N 159-29.0W 122-26.0W  19990619 19990703  tm.ds..........gf.ga.......sb.
AVON09MV  48-21.0N  38-40.0N 127-17.0W 123-51.0W  19990707 19990802  tm.ds..........gf.ga.35....sb.
AVON10MV  40-47.0N  36-02.0N 124-46.0W 122-24.0W  19990805 19990814  tm.ds......................sb.
AVON11MV  40-47.0N  37-20.0N 124-34.0W 122-24.0W  19990814 19990818  tm.ds..........gf.ga.......sb.
AVON12MV  40-48.0N  32-37.0N 124-43.0W 117-15.0W  19990819 19990825  tm.ds..........gf.ga.......sb.
LWAD99MV  44-32.0N  32-37.0N 125-12.0W 117-15.0W  19990904 19990920  tm.ds..........gf.ga.35....sb.
MOCE05MV  32-42.0N  21-26.0N 117-19.0W 105-25.0W  19991001 19991021  tm.ds..........gf.ga.......sb.
OXMZ01MV* 34-19.0N  22-57.0N 120-24.0W 110-13.0W  19991029 19991122  tm.ds................35....sb.
CORE01MV  33-08.0N  32-39.0N 117-43.0W 117-15.0W  19991201 19991203  tm.ds..........gf.ga.......sb.

#


#
##########################################################
#  TABLE 2: Cruise-leg Metadata File Example (AVON02MV)  #
##########################################################
#
"institution",institution,"SCRIPPS INSTITUTION OF OCEANOGRAPHY"
"vessel",vessel,"R/V MELVILLE"
"cruise_id",cruise_id,"AVON02MV"
"cruise_name",cruise_name,"AVON EXPEDITION LEG 2"
"cruise_ngdc_number",cruise_ngdc_number,""
"client",client,"NSF"
"longitude_minimum",longitude_minimum,"170.80540"
"longitude_maximum",longitude_maximum,"-168.67150"
"latitude_minimum",latitude_minimum,"-14.44812"
"latitude_maximum",latitude_maximum,"7.25121"
"data_types",data_types,"depth_12khz depth_multibeam magnetics gravity"
"cruise_start_port",cruise_start_port,"MAJURO MARSHALL ISLANDS"
"cruise_start_date",cruise_start_date,"1999-01-26"
"cruise_end_port",cruise_end_port,"PAGO PAGO"
"cruise_end_date",cruise_end_date,"1999-03-09"
"archivist name",archive_contact_name,"Stephen P. Miller"
"archivist title",archive_contact_title,"Head, Geological Data Center"
"archivist institution",archive_contact_institution,"Scripps Institution of Oceanography"
"archivist street address",archive_contact_street,"9500 Gilman Drive"
"archivist city, state and zip code",archive_contact_city,"La Jolla, CA 92093-0220"
"archivist phone",archive_contact_phone,"1-858-534-1898"
"archivist fax",archive_contact_fax,"1-858-534-0784"
"archivist email",archive_contact_email,"spmiller@ucsd.edu"
"PI Chief Scientist name",PI_contact_name,"HUBERT STAUDIGEL, SCRIPPS"
"PI title",PI_contact_title,""
"PI institution",PI_contact_institution,""
"PI street address",PI_contact_street,""
"PI city, state and zip code",PI_contact_city,""
"PI phone",PI_contact_phone,""
"PI fax",PI_contact_fax,""
"PI email",PI_contact_email,""
"member of scientific party",scientist,"Staudigal, H.        Chief Scientist   "
"member of scientific party",scientist,"Arbesman, K.         Volunteer         "
"member of scientific party",scientist,"Charters, J          Computer tech     "
"member of scientific party",scientist,"Dodds, J.            Volunteer         "
"member of scientific party",scientist,"Herman, S.           Volunteer         "
"member of scientific party",scientist,"Konter, J.           Volunteer         "
"member of scientific party",scientist,"Koppers, A.          Scientist         "
"member of scientific party",scientist,"Lassak, L.M.         Volunteer         "
"member of scientific party",scientist,"Lyons, S.            Grad Student      "
"member of scientific party",scientist,"O'Donnell, G.        Grad Student      "
"member of scientific party",scientist,"Phipps-Morgan, J.    Scientist         "
"member of scientific party",scientist,"Pillard, E.          Resident tech     "
"member of scientific party",scientist,"Sager, W.            Scientist         "
"member of scientific party",scientist,"Taylor, R.           Volunteer         "
"member of scientific party",scientist,"Kantu, K.            Observer          "
"navigation sensor",nav_sensor,"TRIMBLE TASMAN P(Y) GPS"
"vertical reference unit sensor",vru_sensor,"Datawell Hippy Model 120"
"ship heading sensor",hdg_sensor,"Sperry MK 23 Gyro"
"surface sound velocity sensor",ssv_sensor,""
"bathymetric sensor",bathy_sensor,"SEABEAM 2000 w/SIDESCAN"
"bathymetric units",bathy_units,"Uncorrected meters, assumed SV 1500m/sec."
"magnetic sensor",mag_sensor,"GEOMETRICS MAGNETOMETER MOD-G886"
"gravity sensor",grav_sensor,"BELL BGM-3 METER"
"seismic reflection sensor",seismic_sensor,""
"navigation comments",nav_comments,"LINEAR FIT TO 60 SEC FIXES"
"horizontal datum",horizontal_datum,"WGS84"
"ship draft",ship_draft,"5.000000"
"data corrected for ship draft",draft_corrected,"YES"
"data corrected for tides",tide_corrected,"NO"
#

#
##########################################
#  TABLE 3: Data-file Info File Example  #
##########################################
#
Swath Data File:      SBunflagfix.99feb18.ed
MBIO Data Format ID:  32
Format name:          MBF_SB2000SB
Informal Description: SIO Swath-bathy SeaBeam 2000 format
Attributes:           SeaBeam 2000, bathymetry, 121 beams, 
                      binary,  SIO.

Comments in file SBunflagfix.99feb18.ed:
  Bathymetry data edited interactively using program MBedit version 
  $Id: mbedit_prog.c,v 4.18 1997/09/15 19:06:10 caress Exp $
  MB-system Version 4.5
  Run by user <slyons> on cpu <mlvl62> at <Fri Feb 19 09:48:02 1999>
  Control Parameters:
    MBIO data format:   32
    Input file:         /Work_Disk.4/avon2/slyons/Tok/SBunflagfix.99feb18
    Output file:        /Work_Disk.4/avon2/slyons/Tok/SBunflagfix.99feb18.ed
   
  Program /UWDSYS/bin/swath_fix, Version 1.2
  Fri Feb 19 00:14:14 1999
  Machine name:  mlvl62
  User name:  scg
  Program /UWDSYS/bin/swath_fix, Version 1.2
  Fri Feb 19 00:14:06 1999
  Machine name:  mlvl62
  User name:  scg
  Program /UWDSYS/bin/swath_unflag, Version 1.3
  Fri Feb 19 00:14:04 1999
  Machine name:  mlvl62
  User name:  scg
  Program /UWDSYS/bin/swath_merge, Version 1.2
  Fri Feb 19 00:13:35 1999
  Machine name:  mlvl62
  User name:  scg
  Program /UWDSYS/bin/sb2k_mbsysfix, Version 1.0
  Fri Feb 19 00:13:34 1999
  Machine name:  mlvl62
  User name:  scg
  Program sb2k_convert, Version 1.1
  Fri Feb 19 00:11:42 1999
  Machine name:  mlvl62
  User name:  scg

Data Totals:
Number of Records:             6588
Bathymetry Data (121 beams):
  Number of Beams:           797148
  Number of Good Beams:      732745     91.92%
  Number of Zero Beams:       12494      1.57%
  Number of Flagged Beams:    51909      6.51%
Amplitude Data (0 beams):
  Number of Beams:                0
  Number of Good Beams:           0      0.00%
  Number of Zero Beams:           0      0.00%
  Number of Flagged Beams:        0      0.00%
Sidescan Data (0 pixels):
  Number of Pixels:               0
  Number of Good Pixels:          0      0.00%
  Number of Zero Pixels:          0      0.00%
  Number of Flagged Pixels:       0      0.00%

Navigation Totals:
Total Time:            23.9950 hours
Total Track Length:   219.7818 km
Average Speed:          9.1595 km/hr ( 4.9511 knots)

Start of Data:
Time:  02 17 1999 23:53:25.500000  JD48
Lon: -176.1951     Lat:   -0.6481     Depth:  2619.0000 meters
Speed:  1.2284 km/hr ( 0.6640 knots)  Heading: 193.6000 degrees
Sonar Depth:    0.0000 m  Sonar Altitude: 2619.0000 m

End of Data:
Time:  02 18 1999 23:53:07.500000  JD49
Lon: -176.1210     Lat:   -1.3291     Depth:  2264.0000 meters
Speed:  2.0979 km/hr ( 1.1340 knots)  Heading: 178.0000 degrees
Sonar Depth:    0.0000 m  Sonar Altitude: 2264.0000 m

Limits:
Minimum Longitude:    -176.4040   Maximum Longitude:    -175.9800
Minimum Latitude:       -1.3300   Maximum Latitude:       -0.6384
Minimum Sonar Depth:     0.0000   Maximum Sonar Depth:     0.0000
Minimum Altitude:     1114.0000   Maximum Altitude:     4965.0000
Minimum Depth:        1111.0000   Maximum Depth:        5279.0000

#(end documentation file)
