Below is a draft timeline for activites associated with our first COAST field effort this May-June. Please look over the map and timeline (and notes at the bottom of the timeline) and comment on our experimental approach for the first COAST cruises. Pat and I tried to design the cruises around sampling "modules" that we can adjust as the cruise proceeds. We tried to maximize the time that the two vessels will be working together with the added constraints given by the offset Wecoma and Thompson cruise dates plus the fact that the Wecoma must provide a number of large-area maps in order to provide the large scale context. The overlap in time will be much better in August. I designed the SeaSoar "Big Box" grid to repeat lines covered in 1999 and 2000 as well as to run from the CUE line at 45 15'N in the north down to 43 45'N in the south where the topography becomes simpler again.
I have scheduled a MEETING to go over these cruise details on WED APRIL 25th at 1:30pm in BURT 176. I hope that individuals involved in the field work will attend. As usual, all COASTers are welcome.
|May 10||Aircraft arrives in Corvallis|
|May 14||load||depart Seattle|
|May 15||sail 1000||arrive Nwpt; load||begin aircraft flights|
|May 16||north moorings||load||logistics mtg, Newport|
|May 17||north moorings||sail 1000; test N|
|May 18||south moorings||north|
|May 19||south moorings||north|
|May 23||south||sail 1000; BB1|
|May 25||north||BB1; deep CTDs S|
|May 29||south||BB2||Elakha transit|
|May 30||south||BB2||dye release N|
|May 31||south||south||dye tracking|
|June 1||south||south||dye tracking|
|June 2||S/N or weather||south||dye tracking|
|June 3||dockside Nwpt||BB3|
|June 4||transit to||BB3|
|June 13||dockside Nwpt|
Mooring vessel (Wecoma, Levine et al.) to try and do CTDs on 45 0' N line during night(s) of 15 (16) May at about 7 stations: inshore mooring (50m), shelf mooring (80m), slope mooring (140m), 190m, 300m, 550m and 800m. The last two stations will allow a traditional 500-m reference level to be used. If time permits in the region of the southern moorings (44 12' N) on 17 or 18 May, it would be useful to obtain CTD profiles at the slope mooring (120m), 200m, 550m and 1250m.
Profiling vessel (Thompson) "module" is four days made up of repeated cross-shelf sampling, 1/4-day+1/4-night station sampling for Letelier, other station work. The location and timing of the "modules" may be altered depending on weather conditions, etc. It's important to try and maximize the times that the profiling and survey vessels spend together at either the north or south sites. These are presently scheduled as 26-28 May (north) and 31 May to 2 Jun (south).
Survey vessel (Wecoma) covers Big Box (BB) survey in 53 hours from 45 15' N to 43 45'N. Three-day "modules" in north or south include repeated 3-line SeaSoar Small Box (SB) surveys (lines to N and S and on profiling/mooring line, ~35 km long in north, ~80 km long in south) and MOCNESS sampling across shelf. Other activities include clean-rosette casts for trace metal analysis, vertical zooplankton tows, Bongo and MOCNESS sampling for bio-acoustics calibration, and a few vertical profiles for fine-scale bio-optical and bio-acoustics (TAPS system, Cowles et al.).
A communication test between Thompson and shore (SST and SeaWiFS image retrieval) and jpeg attachments (SeaSoar results) via email from Jack is scheduled on 15 May when Thompson is in Newport.