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CalCOFI 0911NM 6 - 23 Nov 2009
The fall 2009 CalCOFI started off smoothly and we remained ahead of station schedule until sailing into some high winds and large swells near San Nicolas Island. The weather continued to deteriorate until we made it back inshore on line 83. Just in time to head back out into more bad weather once again. At this point we were still on schedule, having to cancel the nets on a few stations. Not until approaching 77.55 did we have to cancel all operations due to another bout of increasing winds and swell. Despite all the bad weather, we managed to get all 75 CTD casts in our station plan.
SIO-CalCOFI's new (Aug 2009; "Walter") Seabird 911+ with 24-10L bottle, aluminum rosette was deployed on each CTD station. Standard sensor configuration consists of: 2-SBE 3plus Temperature, 2-SBE 4 Conductivity, 2-SBE 43 Dissolved Oxygen plumbed in parallel with 2-3000rpm pumps. Additional sensors include Seapoint Fluorometer, Wetlabs C-Star 25cm Transmissometer (older versions of Seasave grouped Chelsea/Seatech/Wetlabs in the .con file; coefficients are correct), MBARI-ISUS v2 Nitrate sensor, Datasonics Altimeter, Biospherical QSP-200L PAR, SBE 18 pH. There was a notation re the altimeter cabling, having to switch cabling to accomodate the pH sensor.
There were no sensors changed during this cruise but the ISUS had persistent problems with substantial drop-outs. On the two 3500mm deep casts (sta 90.100 & 80.100), the ISUS, ISUS battery, PAR, & pH sensors were removed since they are not rated greater than 1000m. Note that JRW was off this cruise so MGS was primary CTD manager.
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Cast specific Notes from Console Ops:
Console Ops Cast Notes:
Cast 001 sta 93.3 36.7: 8 bottle prodo, 68m bottom. No issues noted.
Cast 002 sta 93.4 26.4: SCCOOS, 22m bottom, 4 bottles
Cast 003 sta 91.7 26.4: SCCOOS, 15m station, 3 depths, 4 bottles closed
Cast 004 sta 93.3 28.0: 20-bottle cast to 515m. Discovered the transmissometer and fluorometer channels were misconfigured in 001-004.con files. Corrected during processing.
Cast 005 sta 93.3 30.0: CTD winch all stop @243m depth. Smoke was coming from the winch. Engineers called to troubleshoot. Solenoid was making the brake stick and causing smoke & smell. They fixed it and we continued down to finish the cast (restarted ~2210; cast started @2129).
Cast 006 sta 93.3 35.0: 36m chl max; 2 nav files created; wire out lenght not reported & recorded until bottle #12 (85m)
Cast 007 sta 93.3 40.0: 54m chl max; 22 bottle cast to 515m (bottles for LTER at 55m & 10m)
Cast 008 sta 93.3 45.0: 22 bottle prodo station
Cast 009 sta 93.3 50.0: CTD got caught on the rim of the deck outside rail on deployment - sensors seem okay - 6'-8' rollers - got a bit rough
Cast 010 sta 93.3 55.0: deck unit not communication w/ GPS-NMEA. Met computer frozen. Switched the CTD GPS serial cable & Grant rebooted the MET computer. ISUS died @~255m then back on @325m
Cast 011 sta 93.3 60.0: 40m chl max, 30m mixed layer; rough seas, ship roll, volunteers green
Cast 012 sta 93.3 70.0: 21 bottle prodo cast
Cast 013 sta 93.3 80.0: ~48m chl max; rough seas, 6'-8'ft swell
Cast 014 sta 93.3 90.0: data archiving started early, around ~6m as it was returning to the surface
Cast 015 sta 93.3 100.0: 82m chl max, 60m mixed layer; ISUS dropout 150-200m downcast
Cast 016 sta 93.3 110.0: 22 bottle prodo cast, bottle #17 possible mistrip
Cast 017 sta 93.3 120.0: 100m chl max, 60m mixed layer; 22 bottle 515m cast, 2 extra surface bottles for LTER at surface
Cast 018 sta 90.0 120.0: end of Line 90; nothing noted
Cast 019 sta 90.0 110.0: 20 bottle cast to 515m; chl max 60m, 54m mixed layer
Cast 020 sta 90.0 100.0: 85m chl max; 24 bottle prodo cast
Cast 021 sta 90.0 90.0: ISUS bad - last operator didn't charge the battery, low voltage? O2/Temp?salinity unstable between ~150-400m then became stable to 515m. Possibly real since its doing the same on the upcast at the same depths. Or possible loose cable or biofouling, will check post-cast.
Cast 022 sta 90.0 80.0: ISUS flat-lined 2x, will try new battery post-cast
Cast 023 sta 90.0 70.0: 21 bottle prodo cast; ISUS better but dropped out ~500-510m
Cast 024 sta 90.60: ISUS malfunctioning, a lot of dropouts
Cast 025 sta 90.0 53.0: ISUS okay until ~300m then no good
Cast 026 sta 90.0 45.0: cahl max 35m, 20m mixed layer; DIC station, ISUS peaking
Cast 027 sta 90.0 37.0: still having ISUS issues, spiking
Cast 028 sta 90.0 35.0: 308m bottom, 18 bottle prodo cast to 270m; no improvement on ISUS
Cast 029 sta 90.0 27 SCCOOS: 21m bottom, 4 bottle cast to 15m
Cast 030 sta 90.0 28.0: 50m cast, 7 bottles
Cast 031 sta 90.0 30.0: 20 bottle cast to 515m
Cast 032 sta 88.5 30.1: SCCOOS 22m shallow station, 15m 4 bottle cast
cast 033 sta 86.8 32.5: SCCOOS 27m shallow station, 24m 5 bottle cast
Cast 034 sta 86.7 33.0: 59m shallow station, 9 bottles (2 dup depths 10m & 0m)
Cast 035 sta 85.4 35.8 SCCOOS: bottle #1 did not close so sent it back down to 20m & tripped bottle #6
Cast 036 sta 86.7 35.0: 23-bottle prodo station, bottle #23 mistrip; DIC station
Cast 037 sta 86.7 40.0: 24-bottle Santa Monica Basin station, screwed up & tripped bottle #3 50m deeper than planned, at 680m should have been 630m
Cast 038 sta 86.7 45.0: ISUS good! on downcast
Cast 039 sta 86.7 50.0: San Nicolas Island station 81m bottom; 10 bottle cast to 70m
Cast 040 sta 86.7 55.0: big seas - 10'-15', winds 20-30kts; 21 bottle prodo cast
Cast 041 sta 86.7 60.0: calmer but big rolls; 24kt winds
Cast 042 sta 86.7 70.0: grabbed wrong cast sheet but caught it @87m, depths adjusted for Type I, 22-bottles tripped
Cast 043 sta 86.7 80.0: 21 bottle cast ti 516m; chl max 60m, 50m mixed layer
Cast 044 sta 86.7 90.0: 23 bottle prodo cast to 517m; two markers @#9, fixed before backup
Cast 045 sta 86.7 100.0: nothing noted but ISUS still problematic
Cast 046 sta 86.7 110.0: nothing noted on 21 bottle cast to 515m
Cast 047 sta 83.3 110.0: chl max 66-100m, 64m mixed layer; 3-10m bottles tripped for LTER, all 24 bottle closed
Cast 048 sta 83.3 100.0: ~75m chl max, ~60m mixed layer, 28m secchi; 23 bottle prodo cast
Cast 049 sta 83.3 90.0: nothing noted on 21 bottle cast to 518m
Cast 050 sta 83.3 80.0: nothing noted; ISUS working but 3 10m spikes on downcast
Cast 051 sta 83.3 70.0: 21 bottle cast to 515m; 30m chl max, 20m mixed layer
Cast 052 sta 83.3 60.0: bottle #23 only partially closed but sample taken since it wasnt leaking (surface); drifter #93582 deployed; 23 bottle prodo station
Cast 053 sta 83.3 55.0: 22 bottle cast to 516m, CTDatdepth event hit at ~50m on upcast (late); drifters #93583 & #93584 deployed
Cast 054 sta 83.3 51.0: 103m shallow station; 11 bottles
Cast 055 sta 83.3 42.0: 178m bottom, 14 bottle cast to 160m; chl max 30m, mixed layer 20m; GO/deck unit alarm beeping occasionally
Cast 056 sta 83.3 40.6: 36m bottom, 6 bottle station; chl max 20m
Cast 057 sta 83.3 39.4 SCCOOS: 22m bottom, 5 bottles to 17m
Cast 058 sta 81.7 43.5: SCCOOS, 21m bottom, 4 bottle cast to 16m
Cast 059 sta 81.8 46.9: Santa Barbara Basin station, DIC and 24 bottle prodo station
Cast 060 sta 80.0 51.0: 78m bottom, 9 bottle cast to 65m; rough seas - sets of big rollers ~8'
Cast 061 sta 80.0 55.0: 21 bottle cast to 515m
Cast 062 sta 80.0 60.0: kind of rough, going down slow on winch, wire angle tending inboard; primary salinity sensor problem ~50-40m upcast
Cast 063 sta 80.0 70.0: 24 bottle prodo cast - 3 surface bottles tripped, 2 for LTER; big frequent rollers; broad chl max 15-60m, mixed layer 70m, secchi 9m
Cast 064 sta 80.0 80.0: chl max is a straight line from 40-75m; bottle #1 bottom lid didn't fully close
Cast 065 sta 80.0 90.0: 20 bottle cast to 515m
Cast 066 sta 80.0 100.0: 88m chl max, 70m mixed layer; 3500m cast here instead of 80.90 or 80.80; multiple problems/spikes, cast restarted at 440m on upcast because of bottle trip non-confirmations, rebooting & restarting data acquisition seemed to fix the problem. Many notes: unsupported moded error and deck unit error led @3100m downcast; O2 sensor had some deep spikes ~2800m & 3000m downcast; @2600m upcast deck unit GO fire light blinked; more spikes @2550m & 2200m upcast; 800-2400lbs tension on wire; more deck unit underwater unit error beeps on way up; more 3300m O2 & salinity spikes upcast; wire tension spiking to 3000lbs on upcast - rough cast. Hit fire 2x at 440m in Seasave, pressed fire on deck unit 1x still no confirmation, system & data acquisition restarted - Cast 066A downcast/upcast 066B, upcast from 440m; 3 "ghost' bottles tripped to get back to #4
Cast 067 sta 76.7 100.0: 45m chl max, 45m mixed layre, 22m secchi, 22 bottle prodo cast
Cast 068 sta 76.7 90.0: 20 bottle cast to 515m
Cast 069 sta 76.7 80.0: 23 bottle cast to 515m, 3 LTER dups at 85m
Cast 070 sta 76.7 70.0: 22 bottle prodo cast, 60m mixed layer, chl max 20-60m
Cast 071 sta 76.7 60.0: pretty rough again, 20 bottle cast to 515m
Cast 072 sta 76.7 55.0: 21 bottle cast to 515m
Cast 073 sta 76.7 51.0: 18 bottle cast to 230m (altimeter reads 8m off bottom so bottom was ~240m not 264m - shoaling?)
Cast 074 sta 76.7 49.0: 66m bottom, 9 bottle cast to 60m (altimeter reading ~4.2m off bottom); bottom of bottle #8 didn't close completely
Cast 075 sta 80.0 50.5 SCCOOS: 25m bottom, 5 bottle cast to 17m (2 10m bottles).
JRW 02/06/2018
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