A      Cruise Report: SR01

A.1    Cruise Narrative

A.1.1  Highlights

WOCE Line         SR01
Expocode          20VDSR0194_1
Chief Scientist:  Capitán de Corbeta Jorge Maturana Lavin.
                  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.
Ports of call     Punta Arenas, Chile
Cruise Dates      November 08 - December 09 1994


A.1.2 Cruise Summary

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

Number of stations
  A total of 18 hydrographic stations were performed using a CTD 
sealogger model 
  1064 (first three stations) and  a CTD sealogger model 1240 (the 
remaining 
  stations).

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                    RESPONSABILITY                       Inst.
------------------------------------------------------------------------
CC. Sr. J. Maturana L   Chief Scientist.                     SHOA
EaC. Sr. D. Gutierrez   Chief of watch 1,computer operator.  SHOA
EaC. Srta. Y. Guerrero  Chief of watch 2,computer operator.  SHOA



A.1.4  Scientific Programme and methods
       The principal objectives of the cruise were to collect necessary 
       information to increase the scientific knowledge of the dynamic of 
the 
       Antarctic Circumpolar Current at Drake Passage in order to 
contribute to 
       international WOCE program.

Preliminary Results

A.1.5  Major Problems Encountered on the Cruise
       * The Rosette sampler was lost due to a winch operation problem.
       * Many problems with the XBT probes made unsuccessful launches.
       * Iceberg drifting and ice debris  in the area of study and also 
poor 
         visibility made difficult conditions to accomplish the 
hydrographic 
         stations.

A.1.6  Other Observations of Note
       Due to the  lost of the CTD 19 model 1064 the first three stations 
could 
       not be corrected.

A.1.7 List Of Cruise Participants

NAME                             RESPONSABILITY                       
INST.
-------------------------------------------------------------------------
--
CC. Sr. J. Maturana              Chief Scientist                      
SHOA
C1° (Met) J. Bravo               Meteorologist                        
SHOA
EaC. Sr. D. Gutierrez            Chief of watch  1                    
SHOA
S2° Serv. (Oc) P. Urzúa          Winch operator and Rosette meneuver  
SHOA
C1° Serv. (Oc) R. Montecinos     Winch operator and Rosette meneuver  
SHOA
M°  Serv. (Oc) D. Meza           Oxygen análisis                      
SHOA
M°  Serv. (Oc) C. Saavedra M.    XBT launcher , salinity sampler.     
SHOA
EaC. Srta. Y. Guerrero A.        Chief of watch 2                     
SHOA
S2° Serv. (Oc) A. Sanchez R      Winch operator, XBT launcher         
SHOA
C1° Serv. (Db.C) J. Freire .     Water sampler                        
SHOA
M°  Serv. (Oc) P. Altamirano F.  Rosette manoeuvre , oxygen analysis  
SHOA
M°  Serv. (Oc) M. Higueras M.    XBT launcher , salinity sampler.     
SHOA



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 18 XBT launches  (T5 and  T7) were performed.

A.2.6  Meteorological Measurements
       Meteorological data measured were: wind speed and direction, air 
temp., 
       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
--------------------------------------
11/19/1994  1, 2, 3, 4
11/20/1994  5,6,7,8,9
11/21/1994  10, 11, 12, 13, 14, 15, 16
11/22/1994  17, 18
         

CTD SBE-19 model 1240 
       It was bought by SHOA in 1992 and it first calibration was made in 
1995. 
       Therefore, the calibration coefficients used were the ones from 
the 1992 
       with the slope and offset  calculated from the lineal time drift. 


Temperature:
        
A  =  3.67439294E-03  Slope  =  1
B  =  5.79923710E-04  Offset = -0.0011
C  =  8.23609887E-06  
D  = -1.55263735E-06  
FO =  2408.120  

Day  B    n      b/n   post-delta(t)  offset
--------------------------------------------
19  750  850  0.8823529  0.00129     -0.0011
20  751  850  0.8835294  0.00129     -0.0011
21  752  850  0.8847059  0.00129     -0.0011
22  753  850  0.8858824  0.00129     -0.0011

             b: number of days between calibration and the day of CTD 
cast.
             n: number of days between calibrations.
Post-delta (T): temperature-drift value according calibration 
certificate.

Conductivity:

M  = 2.6              Offset = 0
A  = 2.33127200E-03   slope1 = 0.999783
B  = 4.91763158E-01   slope2 = 0.999782
C = -4.12966273E+00  
D  = 5.64959638E-04  
E = -9.5700E-08  

Day  B    n       b/n   (Pre-slope)-1  Slope
----------------------------------------------
19  750  850  0.8823529  -0.000246    0.999783
20  751  850  0.8835294  -0.000246    0.999783
21  752  850  0.8847059  -0.000246    0.999782
22  753  850  0.8858824  -0.000246    0.999782

Therefore, two *.con configuration files were created 
(SR1-94 A.con  and SR1-94 B.con)

Pressure

A0 =  4966.795
A1 =  -1.301054E+00
A2 =   1.217797E-08

Processing

Step 1
    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. to apply the Aling CTD 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. Once finished they have been sent to the WOCE 
Hydrographic 
       Program Office at the Scripps Institution of Oceanography for 
       archival. 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. Position of stations during WOCE SR1 1994.





