*2021/04/21 13:45:24.55 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2020/02/21 02:24:35.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 148 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : 3C74C50 NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Pressure:CTD dbar 2.8 149.8 2 Temperature:CTD deg_C_(ITS90) 6.7272 6.8666 3 Salinity:CTD PSS-78 31.5725 31.8442 4 Sigma-t:CTD kg/m^3 24.7807 24.9832 5 Transmissivity:CTD:650 %/m 40.8 50 6 Transmissivity:CTD:530 %/m 63.9 80.6 7 Oxygen:Dissolved:CTD:Volume ml/l 6.64 6.79 8 Oxygen:Dissolved:CTD:Mass µmol/kg 289.4 295.7 9 Fluorescence:CTD:Seapoint mg/m^3 0.298 0.539 10 PAR:CTD µE/m^2/sec 0 0.1 $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 F R4 4 5 -99 ' ' 6 F ' ' 1 6 -99 ' ' 6 F ' ' 1 7 -99 ' ' 7 F ' ' 2 8 -99 ' ' 6 F ' ' 1 9 -99 ' ' 8 F ' ' 3 10 -99 ' ' 7 F ' ' 1 $END *ADMINISTRATION MISSION : 2020-001 AGENCY : IOS, Ocean Sciences Division, Sidney BC COUNTRY : Canada PROJECT : Line P SCIENTIST : Robert M. PLATFORM : John P. Tully *LOCATION GEOGRAPHIC AREA : North-East Pacific STATION : CH20 EVENT NUMBER : 108 LATITUDE : 54 13.53000 N ! (deg min) LONGITUDE : 130 43.87000 W ! (deg min) WATER DEPTH : 155 *INSTRUMENT TYPE : Sea-Bird CTD MODEL : SBE-911plus SERIAL NUMBER : 0443 LOCATION : Mid-ship ! custom item *COMMENTS CTDEDIT was used to remove records corrupted by shed wakes. Data Processing Notes: ---------------------- Transmissivity, Fluorescence and PAR data are nominal and unedited except that some records were removed in editing temperature and salinity. There were 2 WetLabs CStar transmissometers in use during this cruise: Transmissometer:CTD:530 refers to sensor #1883DG (530nm - green) Transmissometer:CTD:650 refers to sensor #1185DR (650nm - red) For comparison with other Institute of Ocean Sciences cruises, note that the transmissometer wavelength is 650 nm unless otherwise stated. NOTE: While the CTD fluorescence data are expressed in concentration units, they do not always compare well to extracted chlorophyll samples, particularly for casts far from shore. It is recommended that users check extracted chlorophyll values where available. Oxygen:Dissolved:CTD was calibrated using the method described in Sea-Bird Application Note #64-2, June 2012 revision (Sea-Bird_64-2_Jun2012.pdf), except that a small offset in the fit was allowed. The Oxygen:Dissolved:CTD sensor has a fairly long response time so data accuracy is not as high when it is in motion as it is during stops for bottles. This will be especially true when vertical dissolved oxygen gradients are large. To get an estimate of the accuracy of the Oxygen:Dissolved:CTD data during downcasts (after recalibration) a rough comparison was made between downcast Oxygen:Dissolved:CTD data and upcast titrated samples. Some of the difference will be due to problems with flushing of Niskin bottles and/or analysis errors, so the following statement likely underestimates Oxygen:Dissolved:CTD accuracy. Downcast (CTD files) Oxygen:Dissolved:CTD data are considered, very roughly, to be: ±0.30 ml/l from 0 to 250 dbar (higher in areas of very large DO gradients). ±0.20 ml/l from 250 to 400 dbar. ±0.04 ml/l below 400 dbar. For casts 0089 to 0120 there was no 10 dbar soak so data from channels Oxygen:Dissolved:CTD may have been affected by bubbles in the top 10 to 15 dbar. For details on the processing see document: 2020-001-proc.pdf. !--1--- ---2---- ---3---- ---4---- --5-- --6-- --7--- --8-- ---9--- --10-- !Pressu Temperat Salinity Sigma-t: Trans Trans Oxygen Oxyge Fluores PAR: !re:CTD ure:CTD :CTD CTD missi missi :Disso n:Dis cence: CTD ! vity: vity: lved: solve CTD: ! CTD: CTD: CTD: d:CTD Seapoin ! 650 530 Volume :Mass t !------ -------- -------- -------- ----- ----- ------ ----- ------- ------ *END OF HEADER 2.8 6.7272 31.5725 24.7810 50.0 80.5 6.77 294.8 0.539 0.1 4.0 6.7318 31.5731 24.7809 50.0 80.6 6.76 294.3 0.524 0.1 5.0 6.7323 31.5732 24.7809 50.0 80.6 6.76 294.6 0.521 0.0 6.0 6.7316 31.5732 24.7810 50.0 80.6 6.77 294.8 0.516 0.0 7.0 6.7321 31.5733 24.7810 50.0 80.5 6.77 295.0 0.530 0.0 8.0 6.7324 31.5731 24.7808 49.9 80.5 6.76 294.7 0.525 0.0 9.0 6.7314 31.5734 24.7812 49.9 80.6 6.77 294.8 0.532 0.0 10.0 6.7318 31.5735 24.7812 50.0 80.5 6.77 294.8 0.511 0.0 11.0 6.7316 31.5734 24.7812 50.0 80.6 6.77 295.1 0.527 0.0 12.0 6.7318 31.5735 24.7812 50.0 80.6 6.77 295.1 0.514 0.0 13.0 6.7339 31.5742 24.7815 49.9 80.5 6.77 295.1 0.532 0.0 14.0 6.7320 31.5737 24.7813 49.9 80.5 6.78 295.3 0.524 0.0 15.0 6.7334 31.5741 24.7815 49.9 80.2 6.77 295.0 0.511 0.0 16.0 6.7320 31.5736 24.7813 49.9 80.3 6.78 295.5 0.510 0.0 17.0 6.7321 31.5736 24.7812 49.9 80.5 6.78 295.5 0.525 0.0 18.0 6.7320 31.5737 24.7813 50.0 80.5 6.78 295.4 0.501 0.0 19.0 6.7332 31.5742 24.7816 49.9 80.5 6.77 295.1 0.525 0.0 20.0 6.7338 31.5743 24.7816 49.8 80.3 6.78 295.4 0.516 0.0 21.0 6.7332 31.5740 24.7814 49.8 80.3 6.79 295.7 0.517 0.0 22.0 6.7362 31.5743 24.7813 49.9 80.6 6.78 295.2 0.523 0.0 23.0 6.7352 31.5741 24.7812 49.9 80.5 6.78 295.2 0.515 0.0 24.0 6.7362 31.5740 24.7810 49.9 80.6 6.78 295.3 0.511 0.0 25.0 6.7363 31.5736 24.7807 49.8 80.6 6.78 295.5 0.513 0.0 26.0 6.7397 31.5768 24.7828 49.9 80.5 6.78 295.5 0.509 0.0 27.0 6.7417 31.5791 24.7843 49.9 80.6 6.78 295.5 0.509 0.0 28.0 6.7420 31.5794 24.7845 49.9 80.5 6.77 295.0 0.507 0.0 29.0 6.7447 31.5820 24.7862 49.8 80.6 6.76 294.6 0.509 0.0 30.0 6.7463 31.5836 24.7873 49.9 80.5 6.76 294.7 0.495 0.0 31.0 6.7485 31.5859 24.7888 49.9 80.3 6.77 294.8 0.492 0.0 32.0 6.7481 31.5851 24.7883 49.8 80.5 6.77 295.0 0.495 0.0 33.0 6.7461 31.5831 24.7869 49.8 80.3 6.77 295.1 0.496 0.0 34.0 6.7465 31.5836 24.7873 49.8 80.5 6.77 295.0 0.490 0.0 35.0 6.7562 31.5954 24.7953 49.8 80.3 6.77 294.8 0.472 0.0 36.0 6.7603 31.6016 24.7997 49.8 80.3 6.76 294.6 0.453 0.0 37.0 6.7617 31.6092 24.8055 49.7 80.3 6.76 294.5 0.443 0.0 38.0 6.7617 31.6102 24.8063 49.7 80.0 6.75 294.2 0.430 0.0 39.0 6.7625 31.6101 24.8061 49.7 80.0 6.75 294.1 0.435 0.0 40.0 6.7621 31.6096 24.8057 49.6 80.2 6.75 294.1 0.445 0.0 41.0 6.7611 31.6080 24.8046 49.6 80.0 6.75 294.2 0.461 0.0 42.0 6.7610 31.6082 24.8048 49.6 79.9 6.76 294.3 0.432 0.0 43.0 6.7612 31.6081 24.8047 49.6 80.0 6.75 294.0 0.438 0.0 44.0 6.7598 31.6092 24.8057 49.7 80.3 6.76 294.3 0.437 0.0 45.0 6.7605 31.6072 24.8041 49.7 80.0 6.76 294.7 0.452 0.0 46.0 6.7607 31.6081 24.8047 49.6 79.9 6.76 294.6 0.424 0.0 47.0 6.7599 31.6182 24.8128 49.5 79.9 6.76 294.4 0.429 0.0 48.0 6.7640 31.6258 24.8183 49.4 79.6 6.75 294.0 0.427 0.0 49.0 6.7673 31.6282 24.8197 49.4 79.5 6.75 294.0 0.427 0.0 50.0 6.7703 31.6310 24.8216 49.4 79.6 6.74 293.6 0.407 0.0 51.0 6.7709 31.6313 24.8217 49.3 79.5 6.74 293.6 0.409 0.0 52.0 6.7699 31.6311 24.8217 49.3 79.3 6.74 293.8 0.429 0.0 53.0 6.7701 31.6311 24.8217 49.3 79.3 6.74 293.8 0.413 0.0 54.0 6.7748 31.6335 24.8229 49.3 79.5 6.75 294.0 0.406 0.0 55.0 6.7756 31.6341 24.8233 49.3 79.3 6.74 293.7 0.399 0.0 56.0 6.7789 31.6364 24.8247 49.2 79.2 6.74 293.8 0.405 0.0 57.0 6.7840 31.6408 24.8275 49.2 79.2 6.74 293.7 0.397 0.0 58.0 6.7849 31.6418 24.8282 49.1 78.9 6.74 293.4 0.416 0.0 59.0 6.7860 31.6433 24.8292 49.0 78.9 6.73 293.2 0.399 0.0 60.0 6.7900 31.6465 24.8312 49.1 79.2 6.73 293.3 0.391 0.0 61.0 6.7938 31.6485 24.8323 48.9 78.7 6.73 293.2 0.392 0.0 62.0 6.8026 31.6547 24.8361 48.8 78.6 6.73 293.1 0.394 0.0 63.0 6.8051 31.6563 24.8370 48.8 78.4 6.73 293.1 0.382 0.0 64.0 6.8107 31.6598 24.8390 48.8 78.4 6.72 292.9 0.388 0.0 65.0 6.8114 31.6601 24.8392 48.8 78.6 6.73 293.1 0.389 0.0 66.0 6.8110 31.6598 24.8390 48.8 78.4 6.73 293.0 0.390 0.0 67.0 6.8113 31.6601 24.8392 48.8 78.4 6.72 292.8 0.384 0.0 68.0 6.8143 31.6634 24.8414 48.8 78.3 6.72 292.8 0.402 0.0 69.0 6.8149 31.6640 24.8418 48.7 78.3 6.72 293.0 0.398 0.0 70.0 6.8187 31.6690 24.8452 48.5 78.0 6.72 292.8 0.403 0.0 71.0 6.8211 31.6727 24.8478 48.6 78.0 6.72 292.7 0.380 0.0 72.0 6.8218 31.6741 24.8489 48.6 78.0 6.72 292.8 0.375 0.0 73.0 6.8216 31.6755 24.8500 48.5 77.9 6.72 292.6 0.380 0.0 74.0 6.8195 31.6766 24.8511 48.3 77.6 6.71 292.2 0.381 0.0 75.0 6.8190 31.6768 24.8513 48.1 77.3 6.71 292.2 0.379 0.0 76.0 6.8174 31.6775 24.8521 48.0 77.0 6.71 292.4 0.373 0.0 77.0 6.8171 31.6780 24.8525 47.9 76.7 6.72 292.6 0.371 0.0 78.0 6.8161 31.6784 24.8530 47.9 76.7 6.72 292.6 0.375 0.0 79.0 6.8147 31.6784 24.8532 47.9 76.6 6.71 292.3 0.382 0.0 80.0 6.8134 31.6783 24.8532 47.8 76.7 6.72 292.8 0.382 0.0 81.0 6.8117 31.6779 24.8532 47.7 76.4 6.71 292.4 0.367 0.0 82.0 6.8112 31.6789 24.8540 47.8 76.6 6.71 292.3 0.376 0.0 83.0 6.8118 31.6802 24.8549 47.8 76.4 6.71 292.2 0.366 0.0 84.0 6.8128 31.6822 24.8564 47.8 76.7 6.71 292.4 0.359 0.0 85.0 6.8129 31.6825 24.8566 47.9 76.7 6.72 292.6 0.369 0.0 86.0 6.8131 31.6828 24.8568 47.8 76.4 6.72 292.6 0.366 0.0 87.0 6.8165 31.6852 24.8583 47.8 76.6 6.72 292.6 0.364 0.0 88.0 6.8200 31.6883 24.8603 47.9 76.7 6.72 292.5 0.366 0.0 89.0 6.8232 31.6917 24.8625 47.9 76.3 6.72 292.6 0.372 0.0 90.0 6.8240 31.6926 24.8631 47.9 76.3 6.72 292.5 0.357 0.0 91.0 6.8253 31.6956 24.8653 47.7 76.3 6.70 292.1 0.356 0.0 92.0 6.8261 31.7025 24.8707 47.4 75.6 6.70 291.9 0.350 0.0 93.0 6.8268 31.7072 24.8743 47.3 75.3 6.70 291.9 0.345 0.0 94.0 6.8292 31.7125 24.8781 47.0 75.0 6.70 291.7 0.339 0.0 95.0 6.8405 31.7258 24.8871 47.3 75.1 6.69 291.5 0.342 0.0 96.0 6.8515 31.7365 24.8941 47.8 75.6 6.68 291.2 0.330 0.0 97.0 6.8539 31.7387 24.8956 48.1 76.4 6.68 291.1 0.323 0.0 98.0 6.8574 31.7416 24.8974 48.3 76.7 6.68 291.1 0.321 0.0 99.0 6.8608 31.7440 24.8988 48.3 77.0 6.68 291.0 0.314 0.0 100.0 6.8613 31.7446 24.8992 48.3 77.2 6.67 290.7 0.311 0.0 101.0 6.8622 31.7452 24.8996 48.4 77.3 6.68 290.8 0.312 0.0 102.0 6.8629 31.7454 24.8997 48.3 77.2 6.68 291.0 0.317 0.0 103.0 6.8634 31.7461 24.9002 48.2 77.3 6.68 290.8 0.312 0.0 104.0 6.8642 31.7475 24.9012 48.2 77.2 6.67 290.5 0.306 0.0 105.0 6.8645 31.7477 24.9013 48.3 77.3 6.68 290.8 0.317 0.0 106.0 6.8651 31.7484 24.9017 48.2 77.4 6.67 290.6 0.304 0.0 107.0 6.8653 31.7491 24.9023 48.2 77.4 6.68 290.8 0.307 0.0 108.0 6.8653 31.7491 24.9023 48.3 77.4 6.67 290.7 0.303 0.0 109.0 6.8655 31.7505 24.9033 48.2 77.4 6.67 290.7 0.303 0.0 110.0 6.8657 31.7517 24.9043 48.2 77.3 6.67 290.5 0.307 0.0 111.0 6.8657 31.7520 24.9045 48.2 77.2 6.67 290.4 0.306 0.0 112.0 6.8661 31.7521 24.9045 48.2 77.4 6.67 290.4 0.306 0.0 113.0 6.8666 31.7520 24.9044 48.1 77.3 6.67 290.4 0.300 0.0 114.0 6.8666 31.7524 24.9047 48.1 77.4 6.67 290.4 0.313 0.0 115.0 6.8660 31.7534 24.9056 48.2 77.4 6.67 290.4 0.305 0.0 116.0 6.8653 31.7540 24.9061 48.1 77.3 6.66 290.3 0.298 0.0 117.0 6.8646 31.7542 24.9064 48.2 77.3 6.67 290.7 0.301 0.0 118.0 6.8620 31.7558 24.9080 48.2 77.3 6.68 290.9 0.311 0.0 119.0 6.8616 31.7592 24.9107 48.3 77.4 6.67 290.5 0.303 0.0 120.0 6.8611 31.7697 24.9190 48.2 77.4 6.66 290.1 0.308 0.0 121.0 6.8596 31.7751 24.9235 48.2 77.4 6.66 290.1 0.313 0.0 122.0 6.8578 31.7798 24.9274 48.1 77.2 6.67 290.4 0.308 0.0 123.0 6.8575 31.7810 24.9284 48.1 77.3 6.67 290.4 0.310 0.0 124.0 6.8575 31.7811 24.9285 48.0 77.3 6.67 290.5 0.315 0.0 125.0 6.8571 31.7820 24.9292 48.1 77.3 6.67 290.4 0.314 0.0 126.0 6.8567 31.7827 24.9298 48.2 77.2 6.66 290.2 0.310 0.0 127.0 6.8565 31.7832 24.9303 48.0 77.2 6.66 290.3 0.307 0.0 128.0 6.8562 31.7837 24.9307 48.0 76.9 6.67 290.4 0.309 0.0 129.0 6.8561 31.7840 24.9309 48.0 77.0 6.67 290.5 0.314 0.0 130.0 6.8558 31.7846 24.9315 47.8 76.9 6.68 290.9 0.332 0.0 130.8 6.8549 31.7860 24.9327 48.0 77.0 6.67 290.7 0.322 0.0 132.2 6.8523 31.7911 24.9370 47.9 77.0 6.66 290.1 0.311 0.0 133.0 6.8503 31.7955 24.9408 47.8 76.9 6.66 290.3 0.311 0.0 133.7 6.8501 31.7958 24.9410 47.8 76.6 6.66 290.1 0.314 0.0 135.0 6.8484 31.7984 24.9433 47.6 76.7 6.66 290.1 0.326 0.0 136.0 6.8470 31.8005 24.9451 47.7 76.6 6.66 290.2 0.336 0.0 137.0 6.8457 31.8022 24.9466 47.7 76.4 6.66 290.1 0.315 0.0 138.0 6.8456 31.8025 24.9469 47.6 76.4 6.66 290.2 0.322 0.0 139.0 6.8447 31.8038 24.9480 47.6 76.0 6.66 290.3 0.315 0.0 140.0 6.8435 31.8054 24.9494 47.5 76.0 6.66 290.0 0.319 0.0 141.0 6.8420 31.8077 24.9514 47.5 76.0 6.66 290.0 0.322 0.0 142.0 6.8399 31.8111 24.9544 47.4 76.0 6.65 289.8 0.324 0.0 143.0 6.8378 31.8146 24.9574 47.2 75.6 6.66 290.0 0.331 0.0 144.0 6.8359 31.8180 24.9603 47.0 75.4 6.66 290.0 0.324 0.0 145.0 6.8333 31.8224 24.9641 46.7 75.0 6.66 290.0 0.333 0.0 146.0 6.8277 31.8306 24.9713 46.7 74.4 6.66 290.0 0.332 0.0 147.0 6.8241 31.8353 24.9755 45.7 73.1 6.65 289.6 0.335 0.0 148.0 6.8202 31.8408 24.9803 44.0 70.7 6.65 289.6 0.350 0.0 149.2 6.8186 31.8437 24.9828 42.0 66.5 6.64 289.4 0.335 0.0 149.8 6.8184 31.8442 24.9832 40.8 63.9 6.64 289.4 0.337 0.0