        CRUISE DATES: 1995/04/04 to 1995/04/09
       DATABASE NAME: 00102
           SHIP NAME: Moana Wave
      CRUISE NAME(S): mw9504, hot062
               PORTS: Honolulu to Honolulu
     CHIEF SCIENTIST: D.Hebel
          INSTRUMENT: nb150


#== Block Footer ====

 #DATA_DATES: 1995/04/04 18:59:00 --- to --- 1995/04/09 18:52:00
 #LON_RANGE: 158.46 W --- to --- 157.89 W
 #LAT_RANGE:  21.25 N --- to ---  23.28 N
 #DEPTH_RANGE:     20 --- to --- 476 m
 #SAC_CRUISE_ID: 00102 
 #PLATFORM_NAME: R/V Moana Wave 
 #PRINCIPAL_INVESTIGATOR_NAME: D.Karl,R.Lukas,E.Firing,D.Hebel,L.Tupas
 #PI_INSTITUTION: University of Hawaii at Manoa
 #PI_COUNTRY: USA
 #PROJECT: Hawaii Ocean Time-series (JGOFS, WOCE (time-series))
 #CRUISE_NAME: ship_tag=mw9504 woce_tag=PRS02,HOT062 EXPOCODE=32MW062_1
 #PORTS: Honolulu to Honolulu
 #GEOGRAPHIC_REGION: Hawaiian Islands, North Central Pacific
 #PROCESSED_BY: University of Hawaii at Manoa
 #NAVIGATION: GPS
 #QUALITY_NAV: good
 #GENERAL_INFORMATION: 
CRUISE NOTES
  CHIEF SCIENTIST ON SHIP     : D.Hebel
    INSTITUTE                 : University of Hawaii at Manoa
    COUNTRY                   : USA
  SIGNIFICANT DATA GAPS       : none
  SPECIAL SHIP TRACK PATTERNS : Honolulu to station ALOHA,
				transit to 23.4N, return to HNL
  COMMENTS                    : 
LENGTH OF LEG INFORMATION:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
             Northbound  On-Station Southbound (number of days)
   --------------------------------------------------------------
     HOT-62      0.72        3.31      0.65

ADCP INSTRUMENTATION
  MANUFACTURER                : RDI
  HARDWARE MODEL              : VM-150
  SERIAL NUMBERS              :
  FIRMWARE VERSION            :
  TRANSMIT FREQUENCY          : 153 KHz
  TRANSDUCER CONFIGURATION    : JANUS CONCAVE 
  ACOUSTIC BEAM WIDTH         :
  TRANSDUCER BEAM ANGLE       : 30 deg
  COMMENTS                    :

ADCP INSTALLATION
  METHOD/DESCRIPTION OF THE
       ATTACHMENT TO THE HULL : A streamlined fairing is welded
                              to the bottom of the hull. The
                              fairing extends about 18 inches
                              below the hull. There are two
                              wells in the fairing.  The ADCP transducer
                              is mounted on a top-hat shaped
                              carrier, the rim of which is bolted
                              onto the top of the well just above
                              the level of the hull inside the ship.
                              The bottom of the transducer is slightly
                              above the level of the bottom of the
                              fairing, so that a cover plate can
                              be bolted to the bottom of the fairing
                              when the transducer is to be
                              removed from the ship.
 
  LOCATION/DEPTH ON HULL      : Nominally 4 m.
  REPEATABLE ATTACHMENT       :  YES
  DATE OF MOST RECENT ATTACH. :
  ACOUSTIC WINDOW             :  NO
  COMMENTS                    :

ADCP INSTRUMENT CONFIGURATION     
  DEPTH RANGE                 : 20 to 476 m
  BIN LENGTH                  :  8 m
  NUMBER OF BINS              : 58
  TRANSMIT PULSE LENGTH       : 16 m
  BLANKING INTERVAL           :  4 m
  ENSEMBLE AVERAGING INTERVAL : 300 sec
  SOUND SPEED CALCULATION     : function of transducer temperature
  BOTTOM TRACKING             : 1 short section of 55 minutes 
  DIRECT COMMANDS             :
  COMMENTS                    : 

ADCP DATA ACQUISITION SYSTEM
  SOFTWARE DEVELOPERS         : RDI
  SOFTWARE VERSIONS           : DAS 2.48
  DATA LOGGER, MAKE/MODEL     : HP Vectra (8 Mhz 286)
  ADCP/LOGGER COMMUNICATION   : HPIB
  USER BUFFER VERSION         : UH user exit 1920_type
  CLOCK                       : PC and GPS; automatic correction
  COMMENTS                    : 

SHIP HEADING
  INSTRUMENT MAKE/MODEL       : Sperry Mark 37 mod 0 gyrocompass
  SYNCHRO OR STEPPER          : synchro
  SYNCHRO RATIO               : 1:1
  COMPENSATION APPLIED        :  
  GPS ATTITUDE SYSTEM         : YES: (Ashtech 3DF)
    LOCATION OF ANTENNAS      : starboard side, just aft
                                of the wheelhouse, and roughly
                                level with the top of the house.
    RIGID ATTACHMENT          : YES (but the central antenna
                                in particular is subject to
                                vibration, and any antenna
                                could probably be moved a
                                couple cm by being bonked.)
    LOGGING RATE              : 2 Hz output rate; logged
                                by ue4 user exit program

ANCILLARY MEASUREMENTS            
  SURFACE TEMP AND SALINITY   : not operating	
  PITCH/ROLL MEASUREMENTS     : from Ashtech 3DF, logged 
                                only by ue4 user exit
  HYDRO CAST MEASUREMENTS     : yes
  BIOMASS DETERMINATION       : no
    DATE OF LAST CALIBRATION  :
    CALIBRATION COEFFICIENTS  :
    BEAM-AVERAGED AGC AVAILABLE?: 
    CALIBRATION NET TOWS?     :  
  COMMENTS                    :

ADCP DATA PROCESSING/EDITING
  PERSONNEL IN CHARGE         : E.Firing,J.Firing
  DATE OF PROCESSING          : completed 6/24/95 
  NOTABLE SCATTERING LAYERS   :
  COMMENTS                    :  some bottom interference was flagged;
                                 a few bad bins were also flagged;
				 profiles at beginning of cruise removed
				 due to high noise level in shallow water
                                 wire interference removed;
NAVIGATION
  TRANSIT                     : no
  GPS                         : YES
    MAKE/MODEL                : Magnavox receivers 1105 & 1157 models,  
                                Trimble 4000A model, Magnavox MX4200
    SELECTIVE AVAILABILITY    : yes 
    LOCATION OF ANTENNA 
      RELATIVE TO TRANSDUCER  : rough estimate- 16 m forward, 
                                 3 m to stbd
    TIME OBTAINED RELATIVE TO
      START/END OF ENSEMBLE   : start and end of ensemble
    AVERAGING/EDITING APPLIED : ensemble position is average of end of present
                                ensemble and start of following ensemble
    LOGGED WITH ADCP DATA     : YES  - user exit program
    LOGGED INDEPENDENTLY      : YES  - GPS attitude
                                system records fixes and raw
                                data from 2 receivers at 1 Hz
    COMMENT                   : 


CALIBRATION 
    GYROCOMPASS CORRECTION      : YES, profile-by-profile-rotation based
                                  on the Ashtech HOFS (heading offsets)
                                  based upon no velocity compensation;
          INFORMATION ABOUT HEADING-OFFSET FILES
          +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                      Mean        Std       Angle-file
          -----------------------------------------------------------------
             HOT-62  1.5986      0.5531    no edit; numerous dropouts, with
					   3 large gaps of 7, 6, and 5 hours 

    BOTTOM TRACK METHOD         : YES, 10 data points total 
    WATER TRACK METHOD          : YES
    FINAL SELECTION             : 
     HOT-62    Two steps:
                1) Used ashrot.m to create ah62.ang file to rotate database.
                2) Constant rotation. Values derived from adcpcal run on
                   9 ensemble windows from HOT58-63, combined.
                   The values are:
                            phase = -0.2 Amp   = 1.01
    COMMENTS                    : The orientation of the transducer relative
to the gyro compass and an amplitude correction factor for the ADCP were
determined by standard calibration procedures (Joyce, 1989; Pollard and Read,
1989).  Explicit calibration runs were not done during the HOT cruises, so
the calibration comes from brief periods with simultaneous GPS coverage and
either bottom tracking or major ship accelerations, such as arrival on station.
Calibration information from adjacent cruises was used along with that
from the HOT cruises.  

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 ( 2 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, except 1.5cm/s difference in error
				  velocity to ~200m, down to 0 by 250m
    VECTOR, CONTOUR, STICK PLOTS: ok
    COMMENTS                    : ok

 REFERENCES (DATA REPORTS,ETC.) : 
     Data report in preparation, for inquiries contact:
     Mrs. Caroline Kohan (email ckohan@soest.hawaii.edu)
     School of Ocean and Earth Science and Technology,
     Univ. of Hawaii, 1000 Pope Rd., Honolulu Hawaii 96822

