Hawaii Ocean Time-series (HOT)
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HOT-112: Chief Scientist ReportChief Scientist: D. HEBELHOT 112 Cruise Report R/V Kaimikai O Kanaloa 28 Feb.- 3 Mar., 2000 Personnel List HOT 112: WOCE group: Fernando Santiago-Mandujano* Research Associate UH Michele Eich Research Associate UH Mark Valenciano Electronic Technician UH Don Wright Research Associate UH JGOFS group: Dale Hebel Chief Scientist (co-PI JGOFS) UH Louie Tupas* Scientist (co-PI JGOFS) UH Lance Fujieki Computer Specialist UH Karen Bjorkman Postdoc UH Colleen Allen Research Associate UH Terry Houlihan Research Associate UH Matt Church Visiting Graduate Student UH Associated projects Tom Gregory Research Associate UH Jeremiah Johnson Research Associate UH Pati Turner Research Associate UCSC STAG Steve Poulos Electronic Technician UH-UMC Dave Gravatt Deck Technician UH-UMC * Watch Leader Itinerary (approximate HST): ------------------------------ Monday, 28 Feb. 0900 Departed Snug Harbor 0925 Fire/abandon ship drill, science meeting 1140 Arrived Kahe Pt. (Sta. 1) 1200 Weight cast (1000 m) 1245 PRR/TSRB casts 1315 s1c1 1425 Departed Kahe 2355 Arrived Sta. Aloha (Sta. 2) Tuesday, 29 Feb. 0010 Net tow 0040 Net tow 0130 Began sediment trap deployment 0220 Completed sediment trap deployment (22o 46.15'N, 157o 57.13'W) 0300 s2c1(WOCE deep) 0800 s2c2 1000 Net tow 1100 s2c3 (fluorometer problem - cast aborted) 1130 s2c4 1225 PRR-600/TSRB cast 1300 Net tow 1335 Net tow 1405 s2c5 1505 in situ pump (in) 1620 in situ pump (out) 1700 s2c6 2000 s2c7 2200 Net tow 2235 Net tow 2300 s2c8 Wednesday, 1 Mar. 0020 Ship lost control both main engines 0130 Port main eng. on line 0215 Starboard main eng. on line (A motor only) 0225 s2c9 0320 Go-Flo cast 0500 s2c10 0710 Deployed primary productivity array (22o ?N, 158o ?W) 0800 s2c11 1000 Net tow 1035 Net tow 1100 s2c12 1200 PRR-600/TSRB cast 1300 Net tow 1400 s2c13 1505 in situ pump (in) 1620 in situ pump (out) 1700 s2c14 1900 Recovered PP array 2000 s2c15 2300 s2c16 (second WOCE deep cast) Thursday 2, Mar. 0215 CTD on deck 0220 Transit sediment traps strobe 0300 Visual sighting of ST strobe light 0610 Ch. Eng. reported strb SCR repaired 0645 Initiated trap retrieval 0730 Completed sed. trap recovery/transit Honolulu 1730 Arrived Snug Harbor Friday 3, Mar. 0800 Offloading HOT 112 1100 Completed offloading Narrative: ------------- HOT 112 was conducted aboard the R/V Kaimikai O Kanaloa (KOK), 28 February to 3 March, 2000. Captain Hayes was the master of the vessel and Dale Hebel chief scientist. There was a total of 16 participants in the scientific party composed of 4 WOCE, 7 JGOFS, 3 ancillary and 2 STAG. We departed Snug on 1 February occupying stations at Kahe Pt. (sta. 1), and Station ALOHA (sta. 2). All scheduled work was completed and all samples collected with the exception of two net tows due to engine problems. CTD operations were conducted at stations 1 & 2. One ~1000 m CTD cast was conducted at station 1, with 14 ~1000 m CTD casts at Station ALOHA and 2 near-bottom deep casts (~4750 m). S2c3 was aborted due to a faulty fluorometer, which stopped working for no apparent reason. Other over-the-side operations included 3 light casts, 10 net tows, 2 in situ pumping operations, 1 Go-Flo cast, floating sediment traps and productivity operations. All operations were routine with the exception of additional net tows for C. B. Nelson, a rosette Go-Flo primary productivity experiment comparison, collection of atmospheric particulate material, in situ pump operations and rosette/go-flo primary production comparison. The underway/continuous thermosalinograph and ADCP were operable and functioned properly. No continuous pCO2 or fluorometry were measured on HOT 112 as well as limited meterological instrumentation. Overall the weather was partly cloudy with moderate to rough seas. The cruise schedule was very similar to HOT 111 with the exception of HOT 112 engine problems, net tow cancellation, s2c3 fluorometer problem; and inclusion of HPLC cast with the final WOCE deep cast on HOT 111. Therefore, for those interested please see HOT 111 Cruise Report for generic daily activity narrative (applicable dates Feb. 1-4, 2000). Weather ------- HOT 112: The weather was variable with partly cloudy skies and moderate-rough seas at the beginning of the cruise and moderate-strong winds decreasing to moderate conditions towards the end. Below is listed the cruise bridge log descriptions and the various values representing the range for that day. Under wind, sea, and swell there will be two designations, the first is the direction (in degrees), the second for wind is in kts, sea in Beauford force, and swell in feet, barometer in inches of Hg, temp oC (dry bulb) and clouds in tenths. Day Date Wind Sea Swell Barometer Temp Clouds Mon 28 Feb. 085-125,20-22 085-125,3 90-120,3-4 29.96-30.02 73-81 3 Tues 29 Feb. 085-100,17-18 080-100,3 310,4-5 29.97-30.04 69-79 2-7 Wed 1 Mar. 070-120,15-25 070-120,3-4 110-310,5-10 29.97-30.02 71-80 3-8 Thur 2 Mar.* 100-260,5-22 100-260,1-4 110-310,2-6 29.97-30.05 72-79 4-8 *Three entries (0200, 1000 & 1400 hrs) Equipment and methods: ---------------------- All standard equipment functioned properly with the exception of the flash fluorometer. Sub component programs: ----------------------- Investigator: Project: ------------- ---------- Christopher Winn (UH) DIC, pH, Alk., pCO2/UH Bob Bidigare (UH) HPLC pigments/UH Michael Landry (UH) zooplankton dynamics/UH Ancillary programs: ------------------- Investigator: Project: ----------------- ---------- Charles Keeling (SIO) CO2 dynamics and intercalibration/SIO Paul Quay (UW) DIC and 13C/UW John Porter aerosols/UH Abbott/Letelier optical measurements/OSU Claudia B.-Nelson Natural abundance studies Phosphorus isotopes/UH John Zehr Bacterial genome studies/UCSC Students: --------- Matt Church DOC/bacterial dynamics/UH Others: ------- JGOFS personnel EOC, 1 prod. comparison/UH Karin Bjorkman phosphorus experiments/UH |