*2022/05/03 12:57:38.79 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2010/02/09 03:07:35.000 END TIME : UTC 2010/02/09 03:07:35.875 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 22 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : 1BB9D14 NUMBER OF CHANNELS : 7 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Pressure:CTD dbar 2 23 2 Temperature:CTD deg_C_(ITS90) 6.936 6.9425 3 Salinity:CTD PSS-78 32.4601 32.4613 4 Sigma-t:CTD kg/m^3 25.4525 25.4536 5 Transmissivity:CTD %/m 50.8 51.1 6 Oxygen:Dissolved:CTD:Volume ml/l 6.79 6.84 7 Oxygen:Dissolved:CTD:Mass µmol/kg 295.6 297.8 $END $TABLE: CHANNEL DETAIL ! No Pad Start Width Format Type Decimal_Places !--- ----- ----- ----- ------ ---- -------------- 1 -99 ' ' 7 F ' ' 1 2 -99 ' ' 9 F ' ' 4 3 -99 ' ' 9 F ' ' 4 4 -99.9 ' ' 9 F R4 4 5 -99 ' ' 6 F ' ' 1 6 -99 ' ' 7 F ' ' 2 7 -99 ' ' 6 F ' ' 1 $END *ADMINISTRATION MISSION : 2010-001 AGENCY : IOS, Ocean Sciences Division, Sidney, B.C. COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : P20 EVENT NUMBER : 41 LATITUDE : 49 34.07000 N ! (deg min) LONGITUDE : 138 39.97000 W ! (deg min) WATER DEPTH : 3940 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS Data Processing Notes: ---------------------- Transmissivity and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. Transmissometer #1005DR was calibrated in March 2008, and drifted significantly but steadily until July 2009; then a sudden shift occurred, so that maximum values between September 2009 and July 2010 were very low, ~25%/m. In August 2010 a study was made of transmissivity that led to a decision to apply post-processing corrections to all cruises between March 2008 and June 2010. Transmissivity data from this cruise were corrected by multiplying the original values by correction factor 2.26, which was based on the assumption that deep offshore transmissivity should be about 62%/m. For details on the transmissometer post-processing see: Transmissometer_1005DR_Corrections.pdf These data should still be considered nominal. The precision of the Oxygen:Dissolved:CTD channel is difficult to estimate because the comparison with bottles was very noisy, but roughly, the data should be considered: ±0.15 ml/l from 0 to 100 dbar. ±0.5 ml/l from 100 to 400 dbar (values tend to be too high). ±0.2 ml/l from 400 to 600 dbar (values tend to be slightly high). ±0.04 ml/l from 600 to 2000 dbar (values tend to be slightly low). ±0.01 ml/l below 2500 dbar. Fluorescence:CTD data were removed because of severe problems with spikes and higher than usual values at depth suggesting problems with the cable. The data may be obtained from the chief scientist. For details on the processing see processing report: 2010-001-proc.pdf. !--1--- ---2---- ---3---- ---4---- --5-- --6--- --7-- !Pressu Temperat Salinity Sigma-t: Trans Oxygen Oxyge !re:CTD ure:CTD :CTD CTD missi :Disso n:Dis ! vity: lved: solve ! CTD CTD: d:CTD ! Volume :Mass !------ -------- -------- -------- ----- ------ ----- *END OF HEADER 2.0 6.9361 32.4602 25.4529 51.1 6.83 297.4 3.0 6.9362 32.4602 25.4529 51.1 6.82 296.7 4.0 6.9366 32.4601 25.4527 51.1 6.82 296.7 5.0 6.9374 32.4602 25.4527 51.1 6.80 295.9 6.0 6.9381 32.4603 25.4527 51.1 6.81 296.4 7.0 6.9387 32.4604 25.4527 51.1 6.83 297.2 8.0 6.9386 32.4604 25.4527 51.1 6.81 296.6 9.0 6.9382 32.4604 25.4528 51.1 6.80 296.2 10.0 6.9377 32.4605 25.4529 50.8 6.80 295.8 11.0 6.9360 32.4608 25.4534 50.8 6.80 296.0 12.0 6.9382 32.4604 25.4528 50.8 6.81 296.5 13.0 6.9379 32.4603 25.4527 51.1 6.82 296.7 14.0 6.9374 32.4604 25.4529 51.1 6.82 297.0 15.0 6.9393 32.4604 25.4526 50.8 6.84 297.8 16.0 6.9392 32.4604 25.4526 50.8 6.82 296.8 17.0 6.9376 32.4605 25.4529 50.8 6.81 296.4 18.0 6.9376 32.4606 25.4530 50.8 6.83 297.3 19.0 6.9395 32.4603 25.4525 50.8 6.80 296.2 20.0 6.9415 32.4607 25.4526 50.8 6.80 295.8 21.0 6.9425 32.4608 25.4525 50.8 6.79 295.6 22.0 6.9374 32.4613 25.4536 50.8 6.80 296.0 23.0 6.9402 32.4612 25.4531 50.8 6.82 296.9