Ocean Carbon and Biogeochemistry Data System

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SOFeX 2002 Polar Star cruise
Bottle Cast SBE-19 BC casts (WHOI logger system)

PI: Ken Buesseler (WHOI)
Contacts: Steven Pike and Ken Buesseler (WHOI)


Bottle Cast (BC) sampling notes for casts 1-6
08 February 2007: Prepared for OCB data system by Cyndy Chandler, OCB DMO (WHOI).

BC_01
4 10L bottles on Kevlar w/WHOI pressure & T logger on deepest bottle
shallow bottle did not trip
Sample for SF6, DOC, DIC, salts, nuts, chl, FRRF, 234Th

BC_02
6 10L bottles on Kevlar w/WHOI pressure & T logger on deepest bottle
Sample for SF6, DIC, salts, nuts, chl, FRRF, settle, 234Th, bacteria
original log may have chl_a data

BC_03
6 10L bottles on Kevlar w/Polar Star CTD logger on end of line (20m below last bottle)
Sample for SF6, DOC, DIC, salts, nuts, chl, FRRF, bSi, HPLC, 234Th
avg bottom z = 139 +/- 2m. First bottle is -20m from this depth

BC_04
6 10L bottles on Kevlar w/Polar Star CTD logger & Flu senso on end of line (20m below last bottle)
Sample for SF6, DOC, DIC, salts, nuts, 234Th, Chl, HPLC, bSi, phyto (lugols)
avg bottom z = 152.5 +/-0.5m. First bottle is -20m from this depth

BC_05
6 10L bottles on Kevlar w/Polar Star CTD logger & Flu senso on end of line (20m below last bottle)
Sample for SF6, DOC, DIC, sals, nuts, 23Th, Chl, HPLC, bSi, phyto (lugols), bacteria
avg bottom z = 126.6 +/- 0.6m. First bottle is -20m from this depth

BC_06
6 10L bottles on Kevlar w/Polar Star CTD logger & Flu senso on end of line (20m below last bottle)
Sample for SF6, DOC, DIC, salts, nuts, 234Th, Chl, HPLC, bSi, phyto (lugols), 15N, 13C, bacteria
avg bottom z = 138.5 +/-1.5m. First bottle is -20m from this depth


SBE-19 CTD conductivity sensor calibration
Bottle salinity samples were run onboard the Polar Star using IAPSO standards to build a calibration curve. Standards and samples were run three times and an average of these values was used for the final sample value. Measured values were plotted against CTD values (excluding CTD2) with a regression equation applied to the data. This equation was then applied to all CTD salinity values.

y = 0.9965x + 0.1176
R2 = 0.9886

The summary calibration charts from the original Excel file are available in a PDF format file.

The original salinometer data were contributed as a MS Excel file: PS_sal_calibration_file.xls