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