WHP Ref. No.: AR6/AR16
Last updated: 23 September 1993

I. Cruise Report - AR6 and AR16

A.Cruise Narrative 

A.1  Highlights

  Expedition Designation: A.v.Humboldt Cruise 6-92
                          EXPOCODE 07AL692/1 to /4
  Chief Scientist:  Leg 1-4: Eberhard Hagen, IOW
  Abbrevations:  IOW: Institut fuer Ostseeforschung Warnemuende, Germany.
  Ship:  R/V   A.V.Humboldt
  Ports of Call:  Leg 1: Rostock, Germany to Las Palmas,Canaries
                  Leg 2: Las Palmas to Las Palmas, Canaries
                  Leg 3: Las Palmas to Lisbon, Portugal
                  Leg 4: Lisbon to Rostock
  Cruise Dates:  Leg 1: September 2 to September 9, 1992
                 Leg 2: September 9 to September 26, 1992
                 Leg 3: September 28 to October 6, 1992
                 Leg 4: October 8 to October 14, 1992

A.2  Cruise Summary

 Cruise summary report and station locations are given in German in a separate 
report available from the WHPO.
 
 Subject of Leg 1 and 2: WOCE : Eastern Boundary Currents 5
 Subject of Leg 3 and 4: AMOR 92= Atlantic Measurement of Oceanic
                                  Radiation : Skin-Bulk-SST-Relationship


Measurements
  
  During the cruise a total of 171 CTD/rosette stations were occupied using a 
CTDO equipped with a rosette of 12*2.7 l Teflon-type water sampling bottles.

 .CTDO and sound speed;
 .salinity and oxygen of water samples;
 .temperature and pressure by reverse deep sea thermometers
 .stepwise current meter profiling (0-500m) using 
  GPS navigation system :                         32 stations
 
 .AMOR 92 - Experiment:
  -skin-bulk-SST by means of Heiman KT4 radiometer
                             (8-14 *10**-6m):      30 days
  -air pressure, temperature, humidity up to an average attitude
   of about 22 km by radiosondes:                  48 starts
  -underwater radiation                            12 stations
  -pyrometer                                       30 days

 .meteorological standard parameters :             30 days
 .chlorophyll filtration                           12 stations
 .fluorescence down to 300 dbar                    12 stations


A.3 Principal Investigators

 E. Hagen             CTDO, S, O2,
                      Current Profiles        
                      Fluorescence            IOW
 R. Feistel           SST                     IOW
 C. Zuelicke          Meteorology             IRSA
 D.v.d.Linde          Underwater radiation    IRSA
 N. Hoeffner          Chlorophyll             IRSA
 E. Mittelstaedt      Current (moorings)      BSH
  

A.4 Preliminary Results

 Described in an attached paper in German available from the WHPO.

A.5 Major Problems

 At station 177 the OM-87 probe No 2 was lost during the up cast when the cable 
broke.  From station 178 to 235 the OM-87 probe No 3 was used.