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CalCOFI 1802SH General Cruise & Cast Notes:
CalCOFI 1802SH was rescheduled several times due to ship unavailability. RV Lasker was originally scheduled and due to a variety of delays, including federal government shutdown, the final cruise schedule was 11 days at sea. Forty-five standard CalCOFI stations were occupied - Line 93 was skipped (except for sta 93.=30) and 5 stations on Line 77 were added due to good weather and fast ship transit times. Offshore sampling stopped at station 100 (90.100, 87.100, 83.100, 80.100).
CTD General Notes and Problems:
All CTD gear was property of SIO-CalCOFI's this cruise - only the Shimada's two-pin termination, cable grip, shackle were used. SIO-CalCOFI's Seabird 911+, 24-bottle epoxy-coated LARS rosette, and deck unit were used on our Windows 7 blade PC. RV Shimada provided a GPS feed for the deck unit and the remote depth readout box was run to the CTD winch shack.
Standard sensor configuration: dual T, C, & O2 on separately plumbed & pumped horizontal arrays; Wetlabs ECO-Fl fluorometer; C-Star transmissometer; Biospherical PAR & Surface PAR (mounted near the Shimada's CTD A-Frame on the 01 deck since IOD Chl/Rad van was not onboard); MBARI-ISUS v3 w/ battery; SBE18 pH; altimeter. Refer to .hdr files for serial & model numbers. T, C, & O2 sensors were not calibrated before the cruise since original scheduling wouldn't allowed adequate time. ISUS was DI lab calibrated prior to the cruise.
Logistics: CalCOFI 1802 loaded the RV Shimada at 10th Ave Marine Terminal 29-31 Jan 2018. Departure was 1000 01 Feb with 15 scientists, technicians and volunteers. No acoustic calibration of the EK60 was performed.
RV Shimada's two-conductor termination was used with the SIO-CalCOFI's v2 non-uplink deck unit and CTD PC for all casts. RV Shimada's monitor was used with SIO-CalCOFI's keyboard & mouse. SIO-CalCOFI's Seabird Remote Depth Readout Box was used. RV Shimada's NMEA GPS feed was attached to the deck unit . All data acquisition times were in PST - no adjustments or conversions were necessary this cruise. RV Shimada systems runs on local time which was PST.
The termination work fine throughout the cruise and no sensors were replaced. The primary and secondary conductivity & oxygen sensors performed well throughout the cruise. All four sensor had been serviced prior to the last cruise and performed very well so not changes were made.
SIO-CalCOFI ran their own data network independent of the ship's network and there were no issues. Internet was available throughout the cruise on individual devices using a NOAA user account on either wireless or hard-wired connections.
The CESL sample log tablet, hard-wired to the data network, worked reliably throughout the cruise - no reboots or GPS restarts required. The NOAA technicians logged most station activities on an eventlog tablet setup in the fish lab. SIO personnel running the CTD console recorded the CTDatDepth events. The CalCOFI Electronic Sample Log (CESL) was modified for 12 oxygen samples per cast since we were one analyst short. This reduced the oxygen sample load by 50% - prior to the cruise, the affect of only having 12 vs 20 oxygen samples to bottle-correct CTD sensor oxygens was shown to be not significant.
SIO-CalCOFI's Portasal "Harry" was used throughout the cruise and worked fine.
D. Schuller performed nutrient analysis on QuAAtro nutrient analysis this cruise; alternate D. Faber was watchleader & CTD operator.
RV Shimada has Knudsen 3.5 & 12kHz echosounders to find the bottom depth.
Cast Notes (transcribed from console ops, clipboard notes, & data processing):
Seas were calm for most of the cruise. Seas picked up on Line 76.7 (77). NCOG sampling was done on many casts this cruise, targeting chl-max & 10m; no primary productivity experiments were conducted this cruise.
Cast 001 sta 93.3 30.0: 23 bottle DIC station to 515m, seas calm; 2 NCOG bottles tripped along with LTER & DICs; ISUS spikes from 0-30m
Cast 002 sta 90.0 28.0: 11 bottle cast to 65m, 2 NCOG extra bottles tripped; 0 & 30m DIC/pH plus underway pH check sample (#14748)
Cast 003 sta 90.0 30.0: 23 bottle cast to 515m, 2 NCOG bottles tripped, 1 LTER bottle; DIC station
Cast 004 sta 90.0 35.0: 286m bottom, 19 bottle cast to 273m
Cast 005 sta 90.0 37.0: 22 bottle 515m cast; pH sensor spike at ~310m downcast; 0&30m DIC/pH + NCOG
Cast 006 sta 90.0 45.0: 23 bottle 515m cast; pH blip ~270-300m downcast; 0&30m DIC/pH
Cast 007 sta 90.0 53.0: 22 bottle 515m cast - actually 23 bottles but #18 mistripped, CTD sent back to 30m, #23 = 30m bottle; DIC+NCOG station; pH sensor blips between 270-360m on downcast
Cast 008 sta 90.0 60.0: 22 bottle 515m cast; pH looks fine this cast; DIC station
Cast 009 sta 90.0 70.0: 22 bottle 515m cast; pH blips 240-270m downcast; NCOG station
Cast 010 sta 90.0 80.0: 22 bottle 515m cast; bottle #2 "tripped on the fly" noted; underway pH #14784
Cast 011 sta 90.0 90.0: 22 bottle 515m cast; large wire angle; DIC+NCOG station
Cast 012 sta 90.0 100.0: 22 bottle 515m cast; pH blips 240-270m downcast
Cast 013 sta 86.7 100.0: 23 bottle 515m cast; pH blips 240-270m downcast, don't know if this is noise or a real feature (although the scale is expanded quite a bit)
Cast 014 sta 86.7 90.0: 22 bottle 515m cast - #19 mistripped so sent back to 10m, #22 = 10m bottle; uway check pH sample #14794; a couple pH spikes on downcast so most likely noise or bio-fouling
Cast 015 sta 86.7 80.0: 23 bottle cast to 515m; pH okay
Cast 016 sta 86.7 70.0: 23 bottle cast to 515m; pH okay
Cast 017 sta 86.7 60.0: 24 bottle cast to 515m, 3 NCOG bottles tripped but not sampled (not needed afterall); pH spike 120-135m downcast
Cast 018 sta 86.7 55.0: 21 bottle cast to 515m; hdr mislabeled 86.7 60, should be 86.7 55.0 - corrected in .hdr & .hex (using binary editor); unusual cool blob in T, S, O2 330-405m downcast; pH "dip" at 120m downcast
Cast 019 sta 86.7 50.0: shallow 80m bottom, 10 bottle cast to 70m
Cast 020 sta 86.7 45.0: 21 bottle cast to 515m; high ISUS reading 0-25m downcast;
Cast 021 sta 86.7 40.0: Santa Monica Basin, cast to 735m but bottle depths start at 515m - 23 bottle closed; all sensors look good
Cast 022 sta 86.7 35.0: 23 bottle cast to 515m; DIC station; unusual chl profile from 28m max to 70m
Cast 023 sta 86.7 33.0: 57m bottom, 10 bottle cast to 50m; 0&30m DIC/pH; uway check pH #14807
Cast 024 sta 83.3 40.6: 39m bottom, 6 bottle cast to 30m; 0&30m DIC/pH
Cast 025 sta 83.3 42.0: 160m bottom, 12 bottle cast to 150m; 0&30m DIC/pH
Cast 026 sta 81.8 46.9: Santa Barbara Basin station, 583 bottom, 24 bottle cast to 570m (altimeter reading 6.7); DIC+NCOG station
Cast 027 sta 83.3 51.0: 100m bottom, 11 bottle cast to 90m
Cast 028 sta 83.3 55.0: 23 bottle 515m cast; bottle #10 mistripped
Cast 029 sta 83.3 60.0: 21 bottle 515m cast; pH spike (dip) 75m downcast
Cast 030 sta 83.3 70.0: 21 bottle 515m cast; "Temp & NO3 @515m" noted
Cast 031 sta 83.3 80.0: 21 bottle 515m cast; pH spike (dip) at 212m downcast plus unusual pH profile from 270-405m
Cast 032 sta 83.3 90.0: 23 bottle 515m cast; uway pH check sample #14821
Cast 033 sta 83.3 100.0: 23 bottle 515m cast; nothing noted
Cast 034 sta 80.0 100.0: 22 bottle 515m cast; DIC+NCOG station; pH sensor spikey - 100m dip, odd dips 200-385m
Cast 035 sta 80.0 90.0: 22 bottle 515m cast; DIC & uway pH check sample #14840; pH sensor spike at 40-65m downcast
Cast 036 sta 80.0 80.0: 22 bottle 515m cast; DIC+NCOG station; pH sensor spikey 280-410m & 515m
Cast 037 sta 80.0 70.0: 23 bottle 515m cast; DIC+NCOG station; pH sensor spikey 135-405m downcast
Cast 038 sta 80.0 60.0: 23 bottle 515m cast; DIC station; pH sensor spikey 180-490m downcast
Cast 039 sta 80.0 55.0: 23 bottle 515m cast; DIC+NCOG station; pH sensor spikey 200-390m
Cast 040 sta 80.0 51.0: San Nicolas Island shallow 75m, 9 bottle cast to 65m; DIC + uway check pH (prescribed but # not noted)
Cast 041 sta 76.7 49.0: 65m bottom, 8 bottle cast to 55m
Cast 042 sta 76.7 51.0: 235m bottom, 17 bottle cast to 228 (6.5m altimeter reading)
Cast 043 sta 76.7 55.0: 23 bottle 515m cast; all sensors look good
Cast 044 sta 76.7 60.0: 22 bottle 515m cast; all sensors look good
Cast 045 sta 76.7 70.0: last station, 20 bottle cast to 515m; looks good; station mislabeled 76.7 55.0, should be 76.7 70.0 - fixed
Quality Codes Added:
1802001D: 0-24m ISUSQ = 8
1802013U: 410-430m ISUSQ = 8
1802016U: spike in all data at 517m, record removed
not coded but cast 021 was Santa Monica Basin 800m plot
1802020D: 0-18m ISUSQ = 8
1802038U: All Salt2 Data = 8, noisy
1802039D: 0-26m ISUSQ = 8
1802041UD: EstNO3_StaCorr not calculated, plotted EstNO3_CruiseCorr
1802044D: 0-20m ISUSQ = 8
1802045UD: Sta changed from 76.7 55.0 to 76.7 70.0
JRW 18 Jan 2019
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