A     Cruise Report:  PR14_20VDPR1495_1

A.1   Cruise Narrative

A.1.1 Highlights

WOCE Section:  PR14
ExpoCode:  20VDPR1495_1
Chief Scientist: Wanda García L.
                 Servicio Hidrográfico y Oceanográfico de la Armada 
                   (SHOA)
                 Errázuriz 232, Playa Ancha.
                 Valparaíso, Chile.
                 Teléfono: 56-032-266666
                 Fax:      56-032-266542
Ship:            AGOR60 - Vidal Gormaz.
Port of call:    Puerto Montt, CHILE
Cruise Dates:    May/23 to June/16  1995

A.1.2  Cruise Summary

Cruise Track:  
The cruise track and station locations are shown in figure 1.

Number of stations:  
A total of 50 hydrographic stations were performed using a sealogger 19 CTD 
model 1240.

Sampling:  
continuos profiles of  temperature and salinity were made using a CTD. 

Floats, Drifters, and Moorings:  
(None)

A.1.3  List of principal Investigators

NAME                    RESPONSIBILITY                        INST.
---------------------   -----------------------------------   -----
EaC. Sra Wanda García.  Chief of Watch 1, Computer Operator,  SHOA
                          Cruise Logger, Form filer.   
EaC. Sr. C. Rodrigo R.  Chief of Watch 2, Computer and        SHOA
                          Seabeam, cruise logger, 
                          METEO/S.H.I.P message sender   

A.1.4  Scientific Programme and methods
The principal objectives of the cruise were To collect necessary information to 
develop ocean circulation models to predict decade climatic changes  in order 
to contribute to international WOCE program.
Preliminary Results

A.1.5  Major Problems Encountered on the Cruise
Major problems during the realization of the cruise, were the continuos  
passing of weather fronts through the study area, difficulting  the sampling 
and damaging the instruments.

A.1.6  Other Observations of Note:  
       (None)

A.1.7  List Of Cruise Participants

NAME                           RESPONSIBILITY                         INST.
-----------------------------  -------------------------------------  ----
EaC. Sra. W. García L.         Chief of watch 1                       SHOA
EaC. Sr. C. Rodrigo R.         Chief of watch 2  
S2.Serv (Oc) A. Olivares I.    Sampling assistant , XBT launcher      SHOA
C1. R. Castro.                 Seabeam controller                     SHOA
C1. Serv. J. Freire.           Nansen bottle sampler                  SHOA
M. Serv. (Oc. Bas.)            CTD maneuver, XBT launcher,            SHOA
  P. Altamirano                  salinity sampler  
Srta. P. Vera T.               Salinity sampler, thermometer reading  UV
S2. Serv. (Oc) P. Urzúa A.     Rossette maneuver , salinity sampler   SHOA
C1.(Met.) J. Bravo E.          CTD maneuver, XBT launcher,            SHOA
                                 meteorological sampler, 
                                 rossette sampler.  
C1. Serv. (Oc.) R. Montecinos  Winche operator.                       SHOA
Srta. A. Paredes C.            Salinity sampling,                     SHOA
                               thermometer reading .  



A.2    Underway Measurements


A.2.1  Navigation:  
       (Not available)

A.2.2  Echosounding:  
       (Not available)

A.2.3  Acoustic Doppler Current Profiler (ADCP):  
       (None)
        
A.2.4  Thermosalinograph Measurements:  
       (None)

A.2.5  XBTs
       A total of  31  XBT launches (T5 and T7) were performed.

A.2.6  Meteorological Measurements
       Meteorological data measured were:  wind speed and direction, air 
       temperature, atmospheric pressure.



A.3    Hydrographic Measurement Techniques and Calibration

A.3.1  Sample Salinity Measurements:  
       (Not sampled)

A.3.2  Sample Oxygen Measurements:  
       (Not sampled)

A.3.3  Nutrients:  
       (Not sampled)

A.3.4  CFC:  
       (Not sampled)

A.3.5  Samples taken for other chemical measurements:  
       (None)

A.3.6  CTD Measurements
       The CTD used was a Sealogger-19 model 1240 bought by SHOA in 1992, whose 
       first calibration was made in 1995.  

A.3.7  CTD Data collection and processing
       Data registry:  

       DATE      STATION
       --------  ------------------
       05/28/95  1,2, 3
       05/29/95   4, 5, 6
       05/30/95  7, 8, 9, 10
       05/31/95  11, 12, 13
       06/01/95  14, 15, 16
       06/02/95  17, 18, 19
       06/03/95  20
       06/04/95  21, 22
       06/05/95  23, 24, 25, 26
       06/06/95  27, 28, 29, 30
       06/07/95  31, 32
       06/10/95  33, 34, 35
       06/11/95  36, 37, 38, 39, 40
       06/12/95  41, 42
       06/13/95  43, 44, 45, 46
       06/14/95  47, 48, 49
       06/16/95  50
         
   CTD SBE-19 model 1240 
       The first calibration of the CTD was in February 1995 and the second in   
       February 1996. Therefore, 1995 calibration  coefficients were used and 
       slope and offset corrections due to time drift, were computed related to    
       1996 calibration.
       
       Temperature:
         A =    3.67501020E-03   slope =  1
         B =    5.79636042E-04  offset =  0  therefore, as no drift in 
                                             temperature, only conductivity 
                                             corrections were made.
         C =    7.04477118E-06    
         D =   -2.63647365E-06    
        F0 = 2405.472    


       Day  B    n      B/n    post-delta(t)   Offset
       --- ---  ---  --------  ------------- ----------
       28   89  353  0.252125     0.00017    -0.0000429
       29   90  353  0.254958     0.00017    -0.0000433
       30   91  353  0.257790     0.00017    -0.0000438
       31   92  353  0.260623     0.00017    -0.0000431
        1   93  353  0.263456     0.00017    -0.0000479
        2   94  353  0.266289     0.00017    -0.0000453
        3   95  353  0.269122     0.00017    -0.0000458
        4   96  353  0.271955     0.00017    -0.0000462
        5   97  353  0.274788     0.00017    -0.0000467
        6   98  353  0.277620     0.00017    -0.0000472
        7   99  353  0.280453     0.00017    -0.0000477
       10  102  353  0.288952     0.00017    -0.0000491
       11  103  353  0.291785     0.00017    -0.0000496
       12  104  353  0.294618     0.00017    -0.0000501
       13  105  353  0.297450     0.00017    -0.0000506
       14  106  353  0.300283     0.00129    -0.0000511
       16  107  353  0.303116     0.00129    -0.0000515


       Conductivity:
           M =  3.3             offset =  0
           A =  2.25845067E-04  slope1 =  0.99993
           B =  4.96710908E-01  slope2 =  0.99992
           C = -4.14181213E+00  slope3 =  0.99991
           D =  7.47131807E-04    
       CPcor = -9.5700E-08    


       Day  B    n      b/n    (pre-slope)-1   slope
       --- ---  ---  --------  ------------- --------
       28   89  353  0.252125    -0.000296    0.99993
       29   90  353  0.254958    -0.000296    0.99993
       30   91  353  0.257790    -0.000296    0.99992
       31   92  353  0.260623    -0.000296    0.99992
        1   93  353  0.263456    -0.000296    0.99992
        2   94  353  0.266289    -0.000296    0.99992
        3   95  353  0.269122    -0.000296    0.99992
        4   96  353  0.271955    -0.000296    0.99992
        5   97  353  0.274788    -0.000296    0.99992
        6   98  353  0.277620    -0.000296    0.99992
        7   99  353  0.280453    -0.000296    0.99992
       10  102  353  0.288952    -0.000296    0.99991
       11  103  353  0.291785    -0.000296    0.99991
       12  104  353  0.294618    -0.000296    0.99991
       13  105  353  0.297450    -0.000296    0.99991
       14  106  353  0.300283    -0.000296    0.99991
       16  107  353  0.303116    -0.000296    0.99991


Therefore, three *.con configuration files were calculated (PR14-95 A.con to 
PR14-95 C.con)

Data registry  

      Pressure
        A0 = 4966.769
        A1 =   -1.301246E+00
        A2 =    7.337814E-08
      
       
Processing
      Step1
      1. Convert data from  *.hex to  *.cnv format using DATCNV program and  
         *.con configuration file.
      2. Deleting negatives velocities using the leewoce.bas program 
      3. Checking and cleaning the header files.
      4. Computing the average down velocity value (X).
      5. e) to apply the AlingCTD program to correct temperature and 
         conductivity time response shift  from the CTD'sensors.
      
      Step 2
      a) To apply DATCNV program to average observed values meter by meter.
      
      Step 3
      a) To apply  Winfilter program to filter data after step 2 , using a 
         flexible 
         windows determined by the user.

A.3.8 Satellite image acquisition and processing.         
      (None)
  
A.3.9 Shipboard computing:            
      (None)


Note: All data from WOCE PR14 and SR1 cruises, have been passed to the National 
      Oceanographic Data Center of Chile (CENDOC) for data management purposes 
      and to be quality controlled according to normal WHPO procedures. For 
      major information write to:
 
                                 Ricardo Rojas
                                Chief of CENDOC
                                  Casilla 324
                                   Valparaiso
                                     CHILE
                              e-mail rrojas@shoa.cl

      who can direct your request to the appropriate decision channels. Do not 
      write directly to Principal Investigators. 



Figure 1.  Location of hydrographic stations during PR14-95








