#DATA_DATES: 1995/09/22 05:28:00 --- to --- 1995/10/27 19:03:00
 #LON_RANGE:  58.53 E --- to ---  68.63 E
 #LAT_RANGE:  10.46 S --- to ---  23.85 N
 #DEPTH_RANGE:     21 --- to --- 493 m
 #SAC_CRUISE_ID: 00253 
 #PLATFORM_NAME: R/V Meteor
 #PRINCIPAL_INVESTIGATOR_NAME: unconfirmed
 #PI_INSTITUTION: unconfirmed
 #PI_COUNTRY: Germany
 #PROJECT: JGOFS Arabian Sea
 #CRUISE_NAME: M33/1 
 #PORTS: Muscat, Oman to Port Louis, Mauritius
 #GEOGRAPHIC_REGION: Arabian Sea, Indian Ocean
 #PROCESSED_BY: Institut fuer Meereskunde, Hamburg
 #NAVIGATION: GPS
 #QUALITY_NAV: good
 #GENERAL_INFORMATION: 
CRUISE NOTES
  CHIEF SCIENTIST ON SHIP     : K. Lochte
    INSTITUTE                 : Institute fur Meereskunde 
    COUNTRY                   : Germany
  SIGNIFICANT DATA GAPS       : 264.91667 to 265.29167
                                272.04167 to 272.16667
  SPECIAL SHIP TRACK PATTERNS :
  COMMENTS                    : The central topic of the cruise was the
monsoon-induced strong seasonality of the vertical particle flux and its
effects on biological activities and turnover of substance in the benthic 
boundary layer of the deep sea.  During the cruise, four sediment traps
were recovered, overhauled, and re-deployed.  A fifth sediment trap was 
deployed south of the central station.

Data quality is comparable with M32/5 (JGOFS cruise).  The lack of CTD
data for sound speed calibration reduces the accuracy by at least 3-4 cm/s
as compared to WOCE cruises M32/1,4, and 6.  ADCP depth range is low around
21N, 62E.  

ADCP INSTRUMENTATION
  MANUFACTURER                : RDI
  HARDWARE MODEL              : 150
  SERIAL NUMBERS              :
  FIRMWARE VERSION            :
  TRANSMIT FREQUENCY          : 153.6 kHz
  TRANSDUCER CONFIGURATION    : JANUS CONCAVE
  COMMENTS                    :

ADCP INSTALLATION
  METHOD/DESCRIPTION OF THE
    ATTACHMENT TO THE HULL    : The transducers were installed in the front hull
                                to reduce noise by propeller cavitation.
  LOCATION/DEPTH ON HULL      : Transducer depth at nominally 5 m
  REPEATABLE ATTACHMENT       : 
  DATE OF MOST RECENT ATTACH. :
  ACOUSTIC WINDOW             : 
  COMMENTS                    :

ADCP INSTRUMENT CONFIGURATION
  DEPTH RANGE                 : 21 to 493
  BIN LENGTH                  : 8 m
  NUMBER OF BINS              : 60
  TRANSMIT PULSE LENGTH       : 16 m
  BLANKING INTERVAL           : 4 m
  ENSEMBLE AVERAGING INTERVAL : 300 s
  SOUND SPEED CALCULATION     : FUNCTION OF TEMP AT TRANSDUCER
  BOTTOM TRACKING             : no
  DIRECT COMMANDS             :  
  COMMENTS                    :

ADCP DATA ACQUISITION SYSTEM
  SOFTWARE DEVELOPERS         : RDI
  SOFTWARE VERSIONS           : DAS 2.48
  DATA LOGGER, MAKE/MODEL     : PC
  ADCP/LOGGER COMMUNICATION   :
  USER BUFFER VERSION         : User Exit 1920_buffer
  CLOCK                       : Ashtech GPS synchronizes the PC clock 
                                via the User Exit (ue3.exe) program
  COMMENTS                    :

SHIP HEADING                      
  INSTRUMENT MAKE/MODEL       : gyro
  SYNCHRO OR STEPPER          :
  SYNCHRO RATIO               :
  COMPENSATION APPLIED        : no
  GPS ATTITUDE SYSTEM         : YES, Ashtech
    LOCATION OF ANTENNAS      :
    RIGID ATTACHMENT          : 
    LOGGING RATE              :

ANCILLARY MEASUREMENTS            
  SURFACE TEMP AND SALINITY   : thermistor
  PITCH/ROLL MEASUREMENTS     :
  HYDRO CAST MEASUREMENTS     : no 
  BIOMASS DETERMINATION       : no
    DATE OF LAST CALIBRATION  :
    CALIBRATION COEFFICIENTS  :
    BEAM-AVERAGED AGC AVAILABLE?: 
    CALIBRATION NET TOWS?     :  
  COMMENTS                    :

ADCP DATA PROCESSING/EDITING
  PERSONNEL IN CHARGE         : M.Dengler
  DATE OF PROCESSING          : 1997
  ADDED TO NODC DB            : July 1998
  NOTABLE SCATTERING LAYERS   :
  COMMENTS                    :
Profile editing performed for bottom reflection, wire interference,
and spectral width broadening while underway.

NAVIGATION
  GPS                         : YES
    MAKE/MODEL                : Magnavox
    SELECTIVE AVAILABILITY    : 
    P-CODE                    : 
    DIFFERENTIAL              : no
    SAMPLE INTERVAL           :
    LOCATION OF ANTENNA
      RELATIVE TO TRANSDUCER  :
    TIME OBTAINED RELATIVE TO
      START/END OF ENSEMBLE   : end (UE3.exe program)
    AVERAGING/EDITING APPLIED : yes, bad fixes edited out
    LOGGED WITH ADCP DATA     : yes
    LOGGED INDEPENDENTLY      : yes
    COMMENTS                  :
  OTHER                       : 

CALIBRATION 
    GYROCOMPASS CORRECTION      : YES, Ashtech
The gyrocompass was corrected for each ensemble with Ashtech information.
Discontinuities in the Ashtech data resulted in corrections to the gyro
based on least square fit dependencies.

    BOTTOM TRACK METHOD         : No 
    WATER TRACK METHOD          : YES
       CALIBRATION POINTS       : 104
          AFTER EDITING         :  80 
       MISALIGNMENT ANGLE       : mean 1.28, rms 0.7273, drift -0.0140 deg/d
       CURRENT AMPLITUDE        : mean 1.0016, rms 0.0123, drift +0.0003
    FINAL SELECTION             : AMPLITUDE= 1.0000     PHASE= 1.28
    AGREEMENT WITH PREVIOUS 
      CRUISES                   : good
    SOUND SPEED CORRECTIONS     : No

NAVIGATION CALCULATION             
    NAVIGATION USED             : GPS
    REFERENCE LAYER DEPTH RANGE : bins 5 to 20
    FILTERING METHOD FOR 
      SMOOTHING REFERENCE LAYER 
      VELOCITY (FORM/WIDTH)     :  Blackman window function of width T ( .5 hr):
         w(t) = 0.42 - 0.5 * cos(2 * pi *t / T) + 0.08 * cos(4 * pi * t / T).
    FINALIZED SHIP VEL/POSITIONS 
    STORED IN DATABASE          : YES
    COMMENTS                    : 

 GENERAL_ASSESSMENT             : OK
    ON-STATION VS. UNDERWAY     : OK
    VECTOR, CONTOUR, STICK PLOTS: OK
    COMMENTS                    : OK

 REFERENCES (DATA REPORTS,ETC.) : Data report as follows:
Dengler, M. 1998. Shipboard ADCP Measurements in the Arabian Sea 1995.
     Data Acquisition, Processing, and Calibration.  FS Meteor WOCE Cruises
     M32/1, M32/4, M32/6 and JGOFS cruises M32/5, M33/1.
     Institut fuer Meereskunde, Troplowitzstr. 7, 22529 Hamburg.