A. CRUISE NARRATIVE PR05 and PR06 A.1 HIGHLIGHTS WHP Cruise Summary Information WOCE section designation PR05 and PR06 Expedition designation (EXPOCODE) 18EN9202_1 Chief Scientist and their affiliation Ron Perkin Cruise Dates March 26 to April 13, 1992 Ship Endeavour Ports of Call Esquimalt, B.C., Canada Number of stations 67 55° 0.44'N Geographic boundaries 145° 1.89'W 123° 3.5'W 48° 11.82'N Floats and drifters deployed 0 Moorings deployed or recovered 2 A.2 CRUISE SUMMARY The Canadian Naval Auxiliary Vessel ENDEAVOUR left Esquimalt on March 26, 1992 in the midst of a long period of mild spring weather with six IOS scientific personnel and one researcher from UBC. Fig. 1 gives the station locations. The program of planned measurements is shown in Table 1 and included sampling of pCO2, TCO2, alkalinity, 13C and oxygen isotopes in addition to the WOCE repeat hydrography: CTDs and bottle casts for temperature, salinity, nutrient and oxygen analyses. Plankton net trawls, productivity studies and surface water samples were undertaken as part of IOS's Climate Chemistry projects overseen by Mr. Jinping Wu. Servicing and redeployment of sediment trap moorings were scheduled for Station P and the Alaska Gyre station at 550 N and 1450 W and a free-drifting sediment trap was planned for Station P. Additional data down line R (50° 55.7' N, 143° 01' W to 51° 23.5' N, 133° 49.6' W) and along connecting cruise tracks was to be undertaken as time permitted. The first night out saw winds to 40 knots so that Stations P01 and P02 could not be occupied safely. However, the morning of the 27th was good enough and data collection started at Station P03, continuing to P14 where once again strong winds and high seas prevented over-the-side operations. Data collection continued from Stn. 15 to Station P where a full depth cast with a full suite of chemical samples was obtained using 10 litre Niskin bottles. A drifting productivity experiment was deployed and the free drifting sediment trap was put out. Attempts to interrogate the sediment trap mooring at Stn. P were unsuccessful so the release signal was sent and a surface search was done, The ship proceeded north toward Stn. AG but analysis of the problems with the Stn. P mooring showed that the battery voltage in the deck unit was too low for reliable operation. The ship was therefore turned around and another attempt to recover was made in the morning of April 3. After many attempts, the deck unit successfully actuated the release and the mooring was recovered around 1900 Z. Although only one bottle of sediments was collected, the sediment trap was successfully retrieved and prepared for deployment. Data collection along the line to Stn. AG was completed. The AG mooring was recovered and the instruments and release from Stn. P were moored in its place. The ship then returned to Stn. P, completed another bottle cast and deployed a sediment trap mooring using components from Stn. AG and some additional sediment traps to complete the array. The cruise continued down Line R and approached the southern tip of the Queen Charlotte Islands along line J. On the return trip to Esquimalt, Stations P01 and P02 were picked up and the ship docked at 0900 hrs on April 13, 1992. Cruise Track Three straight sections were completed. Line P, from the mouth of the Straits of Juan de Fuca on the Canadian West Coast (48° 34.5' N, 125° 30' W) to Station P (50° N, 145° W). from Station P to Station AG (to 55° N along 145° W). Lines R and J, from Station P to the southern tip of the Queen Charlotte Islands (48° 34.5N, 125° 30 W). Table of Stations by type Sample type No. stations Max. depth (m) ---------------------------------------------------------- CTD casts 67 1500 Bottle casts 9 4200 Surface samples 68 surface Sed. Trap Moorings 3, incl. 1 drifter 4200 Floats and Drifters deployed No long-term floats or drifters were deployed. 3-day duration drifting sediment traps(FDSTAR) and 12-hour duration primary productivity arrays were deployed and recovered. Moorings deployed and recovered At Station AG, 1 sediment trap mooring was recovered and re-deployed. At Station P, 1 sediment trap mooring was recovered and re-deployed. Participants & Affiliations The following table includes all personnel involved in this expedition. Name Responsibility Affiliation, Sciencenet --------------------------------------------------------------------- R.D. Bellegay Moorings/sampling IOS, ios.bc R.G. Perkin CTD IOS, ios.bc, perkin@ios.bc.ca B.G. Minkley T/S/O IOS L.A.F. Spearing Moorings/CTD casts IOS T.J. Soutar Electronics/mooring IOS J. Wu Nutrient analysis, 13C DOUBC Reg Bigham Moorings,hydrocasts CTD IOS IOS: Institute of Ocean Sciences, 9860 West Saanich Road, Sidney, B.C., Telemail: IOS.BC DOUBC: Department of Oceanography, Univ. of B.C., Vancouver, B.C. Date Contact Data Type Data Status Summary -------------------------------------------------------------------- 09/30/99 Buck SUM/DOC Website Updated Files added to website 05/05/00 Whitney CTD Data are Public See note: All the data that IOS has submitted either for PR05 & PR06, or for P1W and P15N can be made available to the public. Most of these data are already archived at MEDS and published. an appendix to the Deep-Sea Res II volume (46) for Canadian JGOFS contains the PR06 T/S, nuts and oxygen data for the upper 1000 m for the 1995-97 period. It has always been our plan that data would be available within two years of collection. 05/09/00 Perkin CTD Data are Public See note: Please re-classify the datasets listed below as "public" with no restrictions. 06/21/00 Bartolacci CTD Website Updated files added to website CTD data for this cruise is now unencrypted. There is no bottle data in for this cruise. 11/27/00 Uribe DOC Submitted 2000.11.27 KJU File contained here is a CRUISE SUMMARY and NOT sumfile. Documentation is online. 2000.10.11 KJU Files were found in incoming directory under whp_reports. This directory was zipped, files were separated and placed under proper cruise. All of them are sum files. Received 1997 August 15th. 03/09/01 Uribe BTL Data Request Frank Whitney On March 9, 2001. An email was sent out to Mr. Frank Whitney requesting bottle data for this cruise. 06/18/02 Uribe CTD/SUM Website Updated Reformatted data online CTD and Sumfile have mismatching station/casts. CTD have increasing cast numbers. Sumfile was modified only for the purpose of the conversion to match the values from the CTD files. The cast types CTD from the sumfile were the lines used to match the CTD. For more details please see the README in the original directory. CTD inventory file and netcdf files were made and put in corresponding directory. 07/22/02 Uribe CTD Website Updated Cast numbers changed to match SUM file The increasing cast numbers in the CTD files were changed to 1 to match the sumfile. These changes were made previously for the exchange conversion but it was now decided this change should be kept in the data that's online.