*2021/09/14 08:57:15.74 *IOS HEADER VERSION 2.0 2016/04/28 2016/06/13 IVF16 *FILE START TIME : UTC 2021/05/14 18:52:53.000 TIME INCREMENT : 0 0 0 0.416667E-01 0 ! (day hr min sec ms) NUMBER OF RECORDS : 149 DATA DESCRIPTION : CTD FILE TYPE : ASCII CRC : 2678B13 NUMBER OF CHANNELS : 10 $TABLE: CHANNELS ! No Name Units Minimum Maximum !--- ----------------------------- --------------- -------------- -------------- 1 Pressure:CTD dbar 3.1 150.7 2 Temperature:CTD deg_C_(ITS90) 6.7364 9.0315 3 Salinity:CTD PSS-78 26.4236 32.2487 4 Sigma-t:CTD kg/m^3 20.4366 25.3125 5 Transmissivity:CTD:650 %/m 15.6 56.7 6 Transmissivity:CTD:530 %/m 34.3 84.5 7 Oxygen:Dissolved:CTD:Volume ml/l 4.44 6.95 8 Oxygen:Dissolved:CTD:Mass µmol/kg 193.6 304.4 9 Fluorescence:CTD:Seapoint mg/m^3 0.147 1.131 10 PAR:CTD µE/m^2/sec 0 618.7 $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 : 2021-006 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 : CH20 EVENT NUMBER : 122 LATITUDE : 54 13.53000 N ! (deg min) LONGITUDE : 130 43.80000 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 some near-surface records and a few records corrupted by shed wakes near the bottom of the cast; salinity was cleaned. 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. The Fluorescence:CTD channel was removed from the CTD files for events 0001 to 0015 due to excessive noise. The problem was resolved when a Y-cable was replaced before event 0016. Data collected during bottle stops looked better, so the channel is included in CHE files. 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. Much 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 for this cruise are considered, very roughly, to be ±3% except in areas of very large DO gradients, especially at the base of the mixed layer. For details on the processing see document 2021-006-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 3.1 9.0071 26.4236 20.4366 31.2 34.3 6.95 304.4 1.131 618.7 4.0 9.0148 26.4566 20.4613 32.1 37.7 6.95 304.3 1.053 435.0 5.0 9.0315 26.5332 20.5187 32.0 37.9 6.90 301.8 1.017 286.7 6.0 9.0038 26.7521 20.6935 32.5 38.2 6.82 298.6 0.981 192.0 7.0 8.7745 27.6413 21.4207 32.1 38.3 6.78 296.2 0.908 128.9 8.0 8.4599 28.7265 22.3139 21.0 38.4 6.72 293.6 0.854 86.7 9.0 8.2430 29.8608 23.2326 15.6 42.8 6.62 288.9 0.843 59.5 10.0 8.0316 30.6701 23.8967 19.3 47.6 6.51 284.0 0.772 43.1 11.0 7.9095 30.8534 24.0576 30.4 56.6 6.43 280.6 0.636 32.4 12.0 7.7933 30.9398 24.1415 45.0 66.5 6.39 278.9 0.562 26.0 13.0 7.7845 30.9487 24.1498 50.5 74.1 6.36 277.6 0.477 21.8 14.0 7.7509 31.0024 24.1965 52.7 76.4 6.34 276.5 0.423 18.6 15.0 7.6678 31.1506 24.3244 53.6 76.7 6.32 275.6 0.362 15.8 16.0 7.6413 31.2005 24.3672 54.2 78.8 6.32 275.5 0.319 13.5 17.0 7.6240 31.2352 24.3968 54.6 79.8 6.31 275.3 0.292 11.7 18.0 7.5893 31.2717 24.4302 55.0 81.0 6.30 274.7 0.262 10.2 19.0 7.5724 31.2903 24.4472 55.2 81.5 6.28 273.6 0.255 9.0 20.0 7.5404 31.3231 24.4773 55.2 81.9 6.25 272.4 0.244 7.9 21.0 7.5279 31.3367 24.4897 55.0 82.1 6.23 271.8 0.237 7.0 22.0 7.5090 31.3560 24.5074 55.3 81.9 6.25 272.3 0.230 6.3 23.0 7.4947 31.3674 24.5183 55.8 82.5 6.28 273.8 0.215 5.6 24.0 7.4786 31.3769 24.5280 56.1 82.7 6.31 275.1 0.204 5.0 25.0 7.4496 31.4032 24.5526 56.7 83.4 6.29 274.2 0.196 4.4 26.0 7.4440 31.4166 24.5639 56.4 84.2 6.21 270.6 0.195 3.9 27.0 7.4316 31.4460 24.5887 55.2 84.2 6.11 266.1 0.203 3.5 28.0 7.4141 31.4726 24.6119 54.3 83.2 6.03 262.9 0.203 3.2 29.0 7.3824 31.4965 24.6350 54.4 82.0 5.99 261.3 0.195 2.8 30.0 7.3230 31.5364 24.6744 54.8 81.0 5.99 261.0 0.187 2.6 31.0 7.2243 31.6030 24.7400 55.7 81.3 5.98 260.6 0.180 2.3 32.0 7.2103 31.6131 24.7498 55.7 82.1 5.98 260.6 0.176 2.1 33.0 7.2008 31.6200 24.7565 56.2 83.1 5.98 260.7 0.161 1.9 34.0 7.1891 31.6301 24.7660 56.5 83.2 5.96 259.9 0.159 1.7 35.0 7.1547 31.6618 24.7955 56.5 84.0 5.91 257.4 0.159 1.5 36.0 7.1089 31.7028 24.8339 56.3 84.4 5.85 254.9 0.159 1.3 37.0 7.0999 31.7155 24.8450 56.1 84.5 5.82 253.5 0.159 1.2 38.0 7.0986 31.7179 24.8471 56.1 84.2 5.80 253.0 0.160 1.1 39.0 7.0970 31.7210 24.8497 55.9 84.2 5.79 252.5 0.159 1.0 40.0 7.0933 31.7271 24.8550 55.9 83.9 5.78 251.8 0.151 0.9 41.0 7.0893 31.7356 24.8623 55.6 83.8 5.76 250.8 0.147 0.8 42.0 7.0874 31.7402 24.8661 55.2 83.4 5.75 250.4 0.152 0.7 43.0 7.0869 31.7421 24.8677 55.3 83.2 5.74 250.1 0.154 0.7 44.0 7.0864 31.7435 24.8689 55.3 82.8 5.74 249.9 0.155 0.6 45.0 7.0854 31.7450 24.8702 55.2 82.7 5.74 250.0 0.163 0.5 46.0 7.0837 31.7481 24.8728 55.1 82.6 5.72 249.2 0.152 0.5 47.0 7.0782 31.7566 24.8803 54.9 82.4 5.68 247.6 0.150 0.4 48.0 7.0651 31.7757 24.8970 54.3 82.2 5.63 245.3 0.159 0.4 49.0 7.0401 31.8101 24.9274 53.1 81.1 5.58 243.2 0.159 0.3 50.0 7.0367 31.8153 24.9319 52.7 79.6 5.55 241.8 0.157 0.3 51.0 7.0328 31.8221 24.9378 52.3 78.6 5.51 240.0 0.159 0.3 52.0 7.0216 31.8400 24.9534 51.4 77.6 5.46 238.0 0.159 0.3 53.0 7.0089 31.8533 24.9655 50.9 76.0 5.43 236.8 0.159 0.2 54.0 7.0056 31.8597 24.9710 50.7 75.1 5.41 235.7 0.159 0.2 55.0 7.0074 31.8636 24.9738 50.8 74.7 5.39 234.7 0.159 0.2 56.0 7.0105 31.8663 24.9755 50.6 74.5 5.37 234.2 0.171 0.2 57.0 7.0113 31.8670 24.9760 50.6 74.4 5.37 233.8 0.166 0.1 58.0 7.0111 31.8681 24.9769 50.3 74.0 5.36 233.4 0.174 0.1 59.0 7.0116 31.8703 24.9785 50.4 74.1 5.33 232.4 0.160 0.1 60.0 7.0010 31.8859 24.9922 50.0 73.9 5.30 231.0 0.160 0.1 61.0 6.9917 31.8966 25.0018 49.8 73.1 5.28 230.1 0.165 0.1 62.0 6.9871 31.8999 25.0050 49.8 72.9 5.27 229.7 0.171 0.1 63.0 6.9744 31.9082 25.0133 49.4 72.6 5.26 229.4 0.169 0.0 64.0 6.9576 31.9198 25.0246 48.2 71.2 5.25 228.6 0.163 0.0 65.0 6.9521 31.9288 25.0324 48.0 70.4 5.22 227.4 0.159 0.0 66.0 6.9476 31.9389 25.0409 47.6 69.6 5.19 226.0 0.170 0.0 67.0 6.9347 31.9548 25.0552 47.0 68.7 5.15 224.3 0.176 0.0 68.0 6.9190 31.9731 25.0716 46.4 67.8 5.11 222.7 0.172 0.0 69.0 6.9072 31.9843 25.0820 46.3 67.4 5.09 221.8 0.181 0.0 70.0 6.8976 31.9908 25.0884 46.9 66.9 5.08 221.3 0.172 0.0 71.0 6.8947 31.9928 25.0903 47.1 66.7 5.07 220.8 0.174 0.0 72.0 6.8941 31.9931 25.0906 47.3 67.0 5.06 220.4 0.166 0.0 73.0 6.8912 31.9957 25.0931 47.6 67.4 5.05 220.0 0.174 0.0 74.0 6.8865 31.9979 25.0954 48.1 67.8 5.04 219.6 0.175 0.0 75.0 6.8831 31.9998 25.0973 48.3 68.6 5.04 219.5 0.172 0.0 76.0 6.8833 32.0003 25.0977 48.1 69.4 5.03 219.2 0.179 0.0 77.0 6.8851 32.0018 25.0987 47.9 69.4 5.03 219.1 0.179 0.0 78.0 6.8864 32.0028 25.0993 47.8 69.2 5.03 218.9 0.173 0.0 79.0 6.8873 32.0041 25.1002 47.6 68.7 5.01 218.4 0.183 0.0 80.0 6.8864 32.0091 25.1042 47.1 68.5 4.99 217.6 0.173 0.0 81.0 6.8776 32.0228 25.1162 46.1 67.8 4.98 216.9 0.183 0.0 82.0 6.8723 32.0259 25.1193 46.1 66.9 4.97 216.5 0.181 0.0 83.0 6.8718 32.0263 25.1197 46.3 66.2 4.97 216.4 0.194 0.0 84.0 6.8709 32.0262 25.1197 46.4 66.2 4.97 216.5 0.185 0.0 85.0 6.8669 32.0293 25.1227 46.5 66.4 4.96 216.0 0.183 0.0 86.0 6.8604 32.0364 25.1291 46.7 66.5 4.94 215.2 0.179 0.0 87.0 6.8561 32.0413 25.1336 46.7 66.6 4.92 214.4 0.178 0.0 88.0 6.8527 32.0454 25.1372 46.4 66.5 4.92 214.3 0.183 0.0 89.0 6.8525 32.0458 25.1376 46.5 66.1 4.92 214.2 0.184 0.0 90.0 6.8525 32.0459 25.1376 46.4 66.2 4.91 214.0 0.191 0.0 91.0 6.8513 32.0478 25.1393 46.2 66.2 4.91 214.0 0.189 0.0 92.0 6.8501 32.0495 25.1408 46.2 65.8 4.90 213.6 0.199 0.0 93.0 6.8457 32.0556 25.1462 46.0 65.8 4.90 213.5 0.188 0.0 94.0 6.8450 32.0568 25.1472 45.6 65.6 4.90 213.3 0.192 0.0 95.0 6.8441 32.0587 25.1488 45.5 64.5 4.89 213.1 0.187 0.0 96.0 6.8430 32.0602 25.1501 45.5 65.0 4.88 212.7 0.209 0.0 97.0 6.8423 32.0611 25.1509 45.5 64.4 4.87 212.3 0.204 0.0 98.0 6.8410 32.0619 25.1517 45.8 63.4 4.87 212.3 0.189 0.0 99.0 6.8363 32.0629 25.1531 45.9 60.8 4.87 212.0 0.203 0.0 100.0 6.8241 32.0640 25.1556 47.7 65.2 4.86 211.9 0.183 0.0 101.0 6.8156 32.0680 25.1599 48.6 67.5 4.85 211.2 0.183 0.0 102.0 6.8152 32.0733 25.1641 48.4 69.3 4.83 210.5 0.177 0.0 103.0 6.8208 32.0770 25.1663 47.0 69.2 4.82 210.2 0.187 0.0 104.0 6.8112 32.0800 25.1699 47.5 67.6 4.82 210.1 0.183 0.0 105.0 6.8095 32.0839 25.1732 48.4 68.5 4.82 209.9 0.180 0.0 106.0 6.8088 32.0925 25.1800 47.2 68.5 4.80 209.0 0.183 0.0 107.0 6.7950 32.0970 25.1854 48.8 68.5 4.78 208.1 0.183 0.0 108.0 6.7838 32.1046 25.1928 49.9 69.7 4.75 207.0 0.178 0.0 109.0 6.7750 32.1131 25.2007 50.5 71.5 4.73 206.1 0.170 0.0 110.0 6.7725 32.1178 25.2047 50.6 72.9 4.72 205.6 0.165 0.0 111.0 6.7706 32.1250 25.2106 50.5 73.4 4.70 204.8 0.159 0.0 112.0 6.7681 32.1375 25.2208 50.2 73.7 4.69 204.4 0.159 0.0 113.0 6.7678 32.1429 25.2251 50.0 72.4 4.68 203.7 0.163 0.0 114.0 6.7669 32.1550 25.2347 49.2 72.7 4.66 203.0 0.169 0.0 115.0 6.7627 32.1646 25.2428 48.8 71.7 4.63 201.8 0.178 0.0 116.0 6.7481 32.1907 25.2653 48.6 70.9 4.60 200.4 0.177 0.0 117.0 6.7453 32.1957 25.2696 48.7 70.4 4.58 199.6 0.168 0.0 118.0 6.7437 32.1999 25.2731 48.5 70.3 4.58 199.3 0.159 0.0 119.0 6.7428 32.2020 25.2749 47.7 68.0 4.57 199.2 0.160 0.0 120.0 6.7419 32.2066 25.2786 48.2 70.2 4.56 198.8 0.163 0.0 121.0 6.7411 32.2109 25.2821 47.8 69.8 4.55 198.3 0.168 0.0 122.0 6.7405 32.2179 25.2877 46.8 69.1 4.54 197.7 0.186 0.0 123.0 6.7402 32.2224 25.2913 45.0 67.0 4.53 197.4 0.185 0.0 124.0 6.7404 32.2214 25.2905 44.7 64.5 4.53 197.5 0.200 0.0 125.0 6.7405 32.2226 25.2914 44.2 63.3 4.53 197.2 0.187 0.0 126.0 6.7405 32.2229 25.2916 43.7 62.6 4.53 197.2 0.192 0.0 127.0 6.7405 32.2239 25.2924 43.5 62.0 4.52 197.1 0.190 0.0 128.0 6.7405 32.2254 25.2936 43.1 61.4 4.51 196.5 0.199 0.0 129.0 6.7404 32.2290 25.2964 42.1 60.5 4.51 196.3 0.201 0.0 130.0 6.7405 32.2298 25.2971 41.6 59.1 4.51 196.5 0.216 0.0 131.0 6.7406 32.2298 25.2970 40.9 58.1 4.51 196.6 0.199 0.0 132.0 6.7406 32.2297 25.2970 41.0 57.8 4.51 196.2 0.200 0.0 133.0 6.7409 32.2301 25.2972 40.8 57.1 4.50 196.1 0.205 0.0 134.0 6.7408 32.2320 25.2987 40.2 57.0 4.50 196.1 0.208 0.0 135.0 6.7401 32.2349 25.3011 39.4 56.2 4.49 195.6 0.236 0.0 136.0 6.7392 32.2371 25.3030 38.3 54.5 4.49 195.4 0.250 0.0 137.0 6.7384 32.2395 25.3050 37.0 52.8 4.48 195.1 0.270 0.0 138.0 6.7389 32.2382 25.3039 36.9 50.3 4.47 194.8 0.266 0.0 139.0 6.7391 32.2380 25.3037 36.5 49.8 4.48 195.0 0.294 0.0 140.0 6.7383 32.2405 25.3058 35.6 49.4 4.47 194.9 0.298 0.0 141.0 6.7376 32.2427 25.3076 35.0 48.3 4.47 194.7 0.291 0.0 142.0 6.7375 32.2429 25.3078 35.1 47.6 4.47 194.6 0.282 0.0 143.0 6.7375 32.2429 25.3078 34.2 47.3 4.47 194.6 0.289 0.0 144.0 6.7376 32.2432 25.3080 33.3 46.3 4.46 194.4 0.282 0.0 145.0 6.7377 32.2430 25.3078 33.4 45.5 4.46 194.4 0.287 0.0 146.0 6.7376 32.2437 25.3084 33.2 44.8 4.46 194.3 0.288 0.0 147.0 6.7374 32.2445 25.3090 32.8 44.8 4.46 194.3 0.291 0.0 148.0 6.7375 32.2440 25.3086 32.6 44.1 4.46 194.2 0.303 0.0 149.0 6.7375 32.2443 25.3089 31.7 42.9 4.45 194.0 0.304 0.0 150.0 6.7370 32.2465 25.3107 30.5 39.6 4.45 193.7 0.333 0.0 150.7 6.7364 32.2487 25.3125 30.2 41.8 4.44 193.6 0.361 0.0