GLOBEC CRUISE HX253 REPORT
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- Piers McBride
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1 GLOBEC CRUISE HX253 REPORT 4 11 December 2001 Funding Source: Chief Scientist: NSF-NOAA (NA-67-RJ-0147) Thomas Weingartner* Institute of Marine Science University of Alaska Fairbanks, AK Phone: weingart@ims.uaf.edu Co-Chief Scientist: Dean Stockwell, IMS-UAF Scientific Personnel: Amy Childers Sarah Thornton Melanie Rohr Alexei Pinchuk Michael Foy Thomas Kline Brian Rowe Nutrients/Productivity, Grad Student, IMS-UAF Nutrients/Chlorophyll, IMS-UAF Nutrients/Chlorophyll, Technician, IMS Zooplankton, Technician, IMS-UAF Microplankton, Technician, UW Zooplankton C-N stable isotopes, Pr. Wm. Sd. Sci Cen. Marine Technician, IMS-UAF, Scientific Purpose: The purpose of the NE Pacific GLOBEC Program is to develop a mechanistic understanding of the response of this marine ecosystem to climate variability. Toward this end, the GLOBEC cruises on the Gulf of Alaska shelf will determine the physical-chemical structure, primary production, the distribution and abundance of zooplankton, YOY salmon, other planktivorous fishes, and marine birds and mammals. Moreover, sampling is being conducted to describe the seasonal and interannual variability in abundance, biomass and size-structure of the microzooplankton (phyto- and zooplankton < 200?m). Sampling is also being undertaken to characterize the isotopic composition the zooplankton community. This will permit delineating coastal versus offshore (oceanic) organic carbon sources in the Gulf of Alaska food chain. These interdisciplinary cruises will occur over a seven-year period and throughout the year so that seasonal and interannual comparisons of the oceanography of this shelf can be made. Where possible these data will be compared with historical data sets, whereas other data sets will be a product of the first systematic sampling effort from this shelf. The December 2001 focused on the distribution of physical properties, nutrients, and chlorophyll and zooplankton populations over the shelf along the Seward Line, within western Prince William Sound, and on the shelf south of Hinchinbrrok Entrance. The purpose is to charactersize the Gulf of Alaska shelf and prince William Sound in early winter when the shelf is undergoing its transition from fall to winter conditions. Cruise HX253 represents the fourth consecutive December that the shelf has been sampled. Cruise Objectives: 1. determine thermohaline, velocity, and nutrient structure of the Gulf of Alaska shelf (Weingartner, Childers, Thornton). 2. determine primary productivity and chlorophyll abundance (Stockwell and Rohr) 3. determine abundance, distribution, and community composition of microzooplankton (Foy) 1
2 4. determine zooplankton stable isotope composition (Kline) 5. collect live diapausing zooplankton for lab studies (Pinchuk) GENERAL COMMENTS: We were unable to complete the planned sampling due to the threat of vessel icing throughout the cruise. Consequently we spent most of our time in Prince William Sound surveying areas that are not part of the regular GLOBEC LTOP grid. These data will be useful in understanding the surface and deep circulation of the sound when compared with historical data from this region. Tasks completed: 1. We occupied the standard hydrographic transects where we collected vertical CTD-fluoresence- PAR profiles. These transects included: the Seward (Table 1), C. Fairfield (Table 2), W. PWS (Table 3), and Hinchinbrook Entrance (Table 4) Lines. We collected ADCP, sea surface salinity (SSS), temperature (SST) and fluorescence (SSF) using seachest sensors, 2. We collect discrete bottle samples at these stations for nutrients and chlorophyll pigments. Chlorophyll Size Fractionation was done at the whole numbered Seward Line stations and at every other C. Fairfield Line station. 3. We measured Primary Productivity at Stations GAK 1, 4, and KIP2. Nutrient amendment studies were done at stations XXXXX 4. 1 CalVet Net casts was collected along the whole-numbered Seward Line stations at PWS2, KIP2, MS2, and HB1 in prince William Sound. 5. Pinchuk and Kline conducted deep (~600 m) MOCNESS tows at GAK 11 and at PWS 2 to collect diapausing zooplankton (Neocalanus). 12/3 Science party arrives in Seward and sets up equipment. 12/ Precruise meeting 900 Depart from dock for RES 2.5 TABLE 1 is the cruise event log showing all sampling activities 12/ Return to SMC; science party departs. PHYSICAL OCEANOGRAPHY (T. Weingartner) Cruise Log: Our sampling was collected under strong cooling conditions. A strong high pressure system was centered over interior Alaska which forced cold (5 10C below freezing) air over the gulf. Wind speeds were often high (>20 knots) especially at the mouths of fjords. These conditions are ideal for promoting strong cooling and potentially dangerous because they are ideal for icing vessels. We collected CTD and ADCP data along the stations listed in the eventlog and shown in the figure. We also collected continuous sea surface temperature, salinity, fluorescence, and meteorological data while underway and between all waypoints. The shelf was weakly to moderately stratified with the strongest stratification occurring seaward of the shelfbreak front (seaward of GAK 8). Rapid cooling was occurring on the inner shelf. For example temperatures in the upper 150 m at GAK2 decreased by about 0.2C over a 4-day period. This suggests a heat loss of >300 W-m -2. My preliminary feeling is that winter is occurring earlier in 2001 than in prior years that we have sampled. It will be interesting to see if this results in cooler than normal spring (April-May) water temperatures. We conducted additional sampling in Pr. William Sound because of the inclement weather. We concentrated on sampling around the sound in an effort to understand differences in freshwater distribution within the sound. The western sound is substantially fresher than the central sound and 2
3 offshore Hinchibrook Entrance (the presumed source waters for the sound). Some of this freshening is due to local addition within the sound. However, some of it might reflect influx from the gulf during the summer months which is only slowly being replaced by saltier winter shelf water. NUTRIENT AND CHLOROPHYLL (A. Childers ad Dean Stockwell) Preliminary results suggest that relatively high nutrient concentrations are in the surface layer and nutrient amendment studies indicate that no nutrients are limiting. Over chlorophyll concentrations are low although there are noticeably higher fluorescence values in the upper 50 m of the water column than at deeper depths. ZOOPLANKTON (STABLE ISOTOPES; T. Kline) At the MOCNESS stations, samples were saved for C and N stable isotope analysis from nets #1 and 2. Zooplankton were saved as individuals in separate vials after identification to species level and frozen. They will be freeze-dried in the laboratory prior to isotopic analysis. PWS2 Deep MOCNESS 4-5 Dec Net# Depth range Type Investigators Nominal Actual Open drogue Kline Closed drogue Kline Closed/100micron Pinchuk/Hopcroft Closed/100micron Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft PWS2 repeat Deep MOCNESS 8 Dec Net# Depth range Type Investigators Nominal Actual Open drogue Kline Closed drogue Kline Closed/100micron Pinchuk/Hopcroft Closed/100micron Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft GAK11 Deep MOCNESS 10 Dec Net# Depth range Type Investigators Nominal Actual Open drogue Kline Closed drogue Kline Closed/100micron Pinchuk/Hopcroft 3
4 Closed/100micron Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft Closed Pinchuk/Hopcroft MICROZOOPLANKTON (M. Foy) Samples were taken to determine microzooplankton abundance and biomass, either as discrete vertical samples or as integrated samples. Vertical samples consisted of sampling from depths 0m, 10 or 20m, 30m, 50m, & 100m and were taken at GAK 2,4,6,8,10 and PWS2. Integrated samples were taken by combining water for an upper layer sample (0m, 10m, 20m, 30m, 40m & 50m) and a lower layer sample (75m & 100m) and taken at GAK 1,3,5,7,9,11,12, CF 3,9, HE 2,7,10, and KIP 2. Above samples were filtered and prepared for epifluorescent microscopy as well as preserved in acid Lugols. In addition, samples were fixed for flow cytometry. See Event Log for sampling details. 4
5 Table 1. CTD Station Locations along Seward Line. Station Name Latitude ( o N) Longitude ( o ) Approximate Bottom Depth (m) RES GAK GAK 1i* GAK GAK 2i* GAK GAK3i* GAK GAK 4i* GAK GAK 5i* GAK GAK 6i** GAK 7** GAK 7i** GAK 8** Gak 8i** GAK GAK9i** GAK GAK GAK GAK *useful in defining Alaska Coastal Current front **useful in defining the shelfbreak front Table 2. CTD Station Locations Along Cape Fairfield Line Station Name Latitude ( o N) Longitude ( o ) Approximate Bottom Depth (m) CF CF CF CF CF CF CF CF CF CF CF CF CF CF CF CF
6 Table 3. CTD Station Locations In Western PWS (Northern PWS; Knight Island Passage; KIP, Hogan Bay; HB; and Montague Strait; MS). [ANC = weather station) Station Name Latitude ( o N) Longitude ( o W) Approximate Bottom Depth (m) HB HB zooplankton HB HB MS MS zooplankton MS MS KIP zooplankton KIP Anc. PWS Anc. PWS Anc. PWS Anc. PWS Anc. PWS Anc. PWS Anc. PWS Anc. PWS zooplankton PWS Anc. PWS zooplankton Table 4. CTD Stations Bracketing Hinchinbrook Entrance. Station Name Latitude ( o N) Longitude ( o ) Approximate Bottom Depth (m) HE HE zooplankton HE HE HE zooplankton HE HE HE HE zooplankton HE zooplankton HE
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13 EVENT LOG: Unless otherwise noted, CTDs were taken for T. Weingartner and T. Royer. Water samples taken for T. Whitledge and D. Stockwell Nutrient and Chlorophyll analysis. CalVet samples were taken for K. Coyle and R. Hopcroft. MOCNESS samples were taken for K. Coyle. Ring Net samples were taken for R. Hopcroft and K. Coyle. Event # Description Station Date GMT Latitude Longitude Depth Comments Scientist HX CTD1 Start res2.5 12/ 4/01 19: Weingartne HX CTD1 End res2.5 12/ 4/01 19: Weingartne HX CTD2 Start gak1 12/ 4/01 20: Weingartne HX CTD2 End gak1 12/ 4/01 21: Weingartne HX CalVET Net Tow Start gak1 12/ 4/01 21: Pinchuk HX CalVET Net Tow End gak1 12/ 4/01 21: Pinchuk HX CTD3 Start gak1 12/ 4/01 21: Prod Cast Stockwell HX CTD3 End gak1 12/ 4/01 21: Stockwell HX CTD4 Start gak1 12/ 4/01 22: redo as one bottle failed Stockwell HX CTD4 End gak1 12/ 4/01 22: Stockwell HX CTD5 Start pws-2 12/ 5/01 6: Neocalanus Hopcroft HX CTD5 End pws-2 12/ 5/01 6: Hopcroft HX CTD6 Start pws-2 12/ 5/01 7: Weingartne HX CTD6 End pws-2 12/ 5/01 7: Weingartne HX MOCNESS Start pws-2 12/ 5/01 8: Pinchuk HX MOCNESS End pws-2 12/ 5/01 8: Pinchuk HX MOCNESS Start pws-2 12/ 5/01 9: Pinchuk HX MOCNESS End pws-2 12/ 5/01 10: Pinchuk HX CTD7 Start ni1 12/ 5/01 11: Weingartne HX CTD7 End ni1 12/ 5/01 12: Weingartne HX CTD8 Start ni2 12/ 5/01 12: Weingartne HX CTD8 End ni2 12/ 5/01 12: Weingartne HX CTD9 Start ni3 12/ 5/01 13: Weingartne HX CTD9 End ni3 12/ 5/01 13: Weingartne HX CTD10 Start ni4 12/ 5/01 13: Weingartne HX CTD10 End ni4 12/ 5/01 14: Weingartne HX CTD11 Start kip2 12/ 5/01 17: Weingartne HX CTD11 End kip2 12/ 5/01 18: Weingartne HX CalVET Net Tow Start kip2 12/ 5/01 18: Pinchuk HX CalVET Net Tow End kip2 12/ 5/01 18: Pinchuk HX CTD12 Start kip2 12/ 5/01 18: prod cast Stockwell HX CTD12 End kip2 12/ 5/01 18: Stockwell HX Ring Net Start kip2 12/ 5/01 19: Pinchuk HX CTD13 start FI1 12/ 5/01 19: Weingartne HX CTD13 End FI1 12/ 5/01 21: Weingartne 13
14 HX CTD14 Start EI1 12/ 5/01 21: Weingartne HX CTD14 End EI1 12/ 5/01 21: Weingartne HX CTD15 Start EI2 12/ 5/01 21: Weingartne HX CTD15 End EI2 12/ 5/01 21: Weingartne HX CTD16 Start MS1 12/ 5/01 22: Weingartne HX CTD16 End MS1 12/ 5/01 23: Weingartne HX CTD17 End MS2 12/ 5/01 23: Weingartne HX CTD17 End MS2 12/ 5/01 23: Weingartne HX CalVET Net Tow Start MS2 12/ 5/01 23: Pinchuk HX CalVET Net Tow End MS2 12/ 5/01 23: Pinchuk HX CTD18 Start MS3 12/ 6/01 0: Weingartne HX CTD18 End MS3 12/ 6/01 0: Weingartne HX CTD19 Start MS4 12/ 6/01 0: Weingartne HX CTD19 End MS4 12/ 6/01 0: Weingartne HX CTD20 Start HB4 12/ 6/01 2: Weingartne HX CTD20 End HB4 12/ 6/01 2: Weingartne HX CTD21 Start HB3 12/ 6/01 2: Weingartne HX CTD21 End HB3 12/ 6/01 3: Weingartne HX CTD22 Start HB2 12/ 6/01 3: Weingartne HX CTD22 End HB2 12/ 6/01 3: Weingartne HX CalVET Net Tow Start HB2 12/ 6/01 3: Pinchuk HX CalVET Net Tow End HB2 12/ 6/01 3: Pinchuk HX CTD23 Start HB1 12/ 6/01 4: Weingartne HX CTD23 End HB1 12/ 6/01 4: Weingartne HX CTD24 Start HE1 12/ 6/01 8: Weingartne HX CTD24 End HE1 12/ 6/01 8: Weingartne HX CTD25 Start he2 12/ 6/01 9: Weingartne HX CTD25 End he2 12/ 6/01 9: Weingartne HX CTD26 Start he3 12/ 6/01 9: Weingartne HX CTD26 End he3 12/ 6/01 9: Weingartne HX CTD27 Start he4 12/ 6/01 10: Weingartne HX CTD28 Start he6.5 12/ 6/01 11: Weingartne HX CTD28 End he6.5 12/ 6/01 11: Weingartne HX CTD29 Start he8 12/ 6/01 12: Weingartne HX CTD29 End he8 12/ 6/01 12: Weingartne HX CTD30 Start he9 12/ 6/01 13: Weingartne HX CTD30 End he9 12/ 6/01 13: Weingartne HX CTD31 Start he10 12/ 6/01 13: Weingartne HX CTD31 End he10 12/ 6/01 14: Weingartne HX CTD32 Start he11 12/ 6/01 14: Weingartne HX CTD32 End he11 12/ 6/01 14: Weingartne HX CTD33 Start cf1 12/ 6/01 23: Weingartne HX CTD33 End cf1 12/ 6/01 23: Weingartne HX CTD34 Start cf2 12/ 6/01 23: Weingartne HX CTD34 End cf2 12/ 6/01 23: Weingartne 14
15 HX CTD35 start cf3 12/ 7/01 0: Weingartne HX CTD35 End cf3 12/ 7/01 0: Weingartne HX CTD36 Start cf4 12/ 7/01 0: Weingartne HX CTD36 End cf4 12/ 7/01 0: Weingartne HX CTD37 Start cf5 12/ 7/01 1: Weingartne HX CTD37 End cf5 12/ 7/01 1: Weingartne HX CTD38 Start cf6 12/ 7/01 1: Weingartne HX CTD38 End cf6 12/ 7/01 1: Weingartne HX CTD39 Start cf7 12/ 7/01 2: Weingartne HX CTD39 End cf7 12/ 7/01 2: Weingartne HX CTD40 Start cf8 12/ 7/01 2: Weingartne HX CTD40 End cf8 12/ 7/01 2: Weingartne HX CTD41 Start cf9 12/ 7/01 2: Weingartne HX CTD41 End cf9 12/ 7/01 3: Weingartne HX CTD42 Start cf10 12/ 7/01 3: Weingartne HX CTD42 End cf10 12/ 7/01 3: Weingartne HX CTD43 Start cf11 12/ 7/01 3: Weingartne HX CTD43 End cf11 12/ 7/01 4: Weingartne HX CTD44 Start cf13 12/ 7/01 4: Weingartne HX CTD44 End cf13 12/ 7/01 4: Weingartne HX CTD45 Start cf15 12/ 7/01 5: Weingartne HX CTD45 End cf15 12/ 7/01 5: Weingartne HX CTD46 Start gak5 12/ 7/01 6: Weingartne HX CTD46 End gak5 12/ 7/01 6: Weingartne HX CTD47 Start gak4i 12/ 7/01 7: Weingartne HX CTD47 End gak4i 12/ 7/01 7: Weingartne HX CTD48 Start gak4 12/ 7/01 8: Prod Weingartne HX CTD48 End gak4 12/ 7/01 8: Weingartne HX CTD49 Start gak4 12/ 7/01 8: Prod redo Weingartne HX CTD49 End gak4 12/ 7/01 8: Weingartne HX CalVET Net Tow Start gak4 12/ 7/01 8: Pinchuk HX CTD50 Start gak4 12/ 7/01 8: Weingartne HX CTD50 End gak4 12/ 7/01 9: Weingartne HX Ring Net Start gak4 12/ 7/01 9: Pinchuk HX CTD51 Start gak3i 12/ 7/01 9: Weingartne HX CTD51 End gak3i 12/ 7/01 10: Weingartne HX CTD52 Start gak3 12/ 7/01 10: Weingartne HX CTD52 End gak3 12/ 7/01 11: Weingartne HX CalVET Net Tow Start gak3 12/ 7/01 11: Pinchuk HX CalVET Net Tow End gak3 12/ 7/01 11: Pinchuk HX CTD53 Start gak2i 12/ 7/01 11: Weingartne HX CTD53 End gak2i 12/ 7/01 12: Weingartne HX CTD54 Start gak2 12/ 7/01 12: Weingartne HX CTD54 End gak2 12/ 7/01 13: Weingartne HX CalVET Net Tow Start gak2 12/ 7/01 13: Pinchuk 15
16 HX CalVET Net Tow End gak2 12/ 7/01 13: Pinchuk HX CTD55 Start gak1i 12/ 7/01 13: Weingartne HX CTD55 End gak1i 12/ 7/01 14: Weingartne HX CTD56 Start gak1 12/ 7/01 14: Weingartne HX CTD56 End gak1 12/ 7/01 15: Weingartne HX CalVET Net Tow Start gak1 12/ 7/01 15: Pinchuk HX CalVET Net Tow End gak1 12/ 7/01 15: Pinchuk HX CTD57 Start PWSWA 12/ 7/01 23: Weingartne HX CTD57 End PWSWA 12/ 7/01 23: Weingartne HX CTD58 Start PWSW1 12/ 8/01 0: Weingartne HX CTD58 End PWSW1 12/ 8/01 0: Weingartne HX CTD59 Start PWSW2 12/ 8/01 0: Weingartne HX CTD59 End PWSW2 12/ 8/01 0: Weingartne HX CTD60 Start PWSW3 12/ 8/01 1: Weingartne HX CTD60 End PWSW3 12/ 8/01 1: Weingartne HX CTD61 Start PWSW4 12/ 8/01 1: Weingartne HX CTD61 End PWSW4 12/ 8/01 1: Weingartne HX CTD62 Start PWSW5 12/ 8/01 2: Weingartne HX CTD62 End PWSW5 12/ 8/01 2: Weingartne HX CTD63 Start PWSW5i 12/ 8/01 2: Weingartne HX CTD63 End pwsw5i 12/ 8/01 3: Weingartne HX CTD64 Start pwsw6 12/ 8/01 3: Weingartne HX CTD64 End pwsw6 12/ 8/01 3: Weingartne HX MOCNESS Start pws2 12/ 8/01 19: Pinchuk HX MOCNESS End pws2 12/ 8/01 20: Pinchuk HX CTD65 Start pws2 12/ 8/01 20: for zooplankton Pinchuk HX CTD65 End pws2 12/ 8/01 21: Pinchuk HX CTD66 Start hg1 12/ 9/01 2: harvard glacier Weingartne HX CTD66 End hg1 12/ 9/01 2: Weingartne HX CTD67 Start pw1 12/ 9/01 5: Port Wells Weingartne HX CTD67 End pw1 12/ 9/01 5: Weingartne HX CTD68 Start nk1 12/ 9/01 9: Weingartne HX CTD68 End nk1 12/ 9/01 9: Weingartne HX CTD69 Start nk2 12/ 9/01 9: Weingartne HX CTD69 End nk2 12/ 9/01 10: Weingartne HX CTD70 Start nk3 12/ 9/01 10: Weingartne HX CTD70 End nk3 12/ 9/01 11: Weingartne HX CTD71 Start nk4 12/ 9/01 11: Weingartne HX CTD71 End nk4 12/ 9/01 12: Weingartne HX CTD72 Start nk5 12/ 9/01 12: Weingartne HX CTD72 End nk5 12/ 9/01 12: Weingartne HX CTD73 Start kj1 12/ 9/01 13: Weingartne HX CTD73 End kj1 12/ 9/01 13: Weingartne HX CTD74 Start kj2 12/ 9/01 14: Weingartne 16
17 HX CTD74 End kj2 12/ 9/01 14: Weingartne HX CTD75 Start kj3 12/ 9/01 15: Weingartne HX CTD75 End kj3 12/ 9/01 15: Weingartne HX CTD76 Start kj4 12/ 9/01 15: Weingartne HX CTD76 End kj4 12/ 9/01 16: Weingartne HX CTD77 Start mh4 12/ 9/01 16: Weingartne HX CTD77 End mh4 12/ 9/01 16: Weingartne HX CTD78 Start mh3 12/ 9/01 17: Weingartne HX CTD78 End mh3 12/ 9/01 17: Weingartne HX CTD79 Start mh2 12/ 9/01 18: Weingartne HX CTD79 End mh2 12/ 9/01 18: Weingartne HX CTD80 Start mh1 12/ 9/01 18: Weingartne HX CTD80 End mh1 12/ 9/01 19: Weingartne HX CTD81 Start mn1 12/ 9/01 19: Weingartne HX CTD81 End mn1 12/ 9/01 19: Weingartne HX CTD82 Start mn2 12/ 9/01 20: Weingartne HX CTD82 End mn2 12/ 9/01 20: Weingartne HX CTD83 Start mn3 12/ 9/01 21: Weingartne HX CTD83 end mn3 12/ 9/01 21: Weingartne HX CTD84 Start ms2 12/ 10/01 2: nutrient replicates Childers HX CTD84 End ms2 12/ 10/01 2: Childers HX CTD85 Start gak6 12/ 10/01 8: Weingartne HX CTD85 End gak6 12/ 10/01 8: Weingartne HX CalVET Net Tow Start gak6 12/ 10/01 8: Pinchuk HX CalVET Net Tow End gak6 12/ 10/01 8: Pinchuk HX CTD86 Start gak7 12/ 10/01 9: Weingartne HX CTD86 End gak7 12/ 10/01 9: Weingartne HX CalVET Net Tow Start gak7 12/ 10/01 9: Pinchuk HX CalVET Net Tow End gak7 12/ 10/01 9: Pinchuk HX CTD87 Start gak8 12/ 10/01 11: Weingartne HX CTD87 End gak8 12/ 10/01 11: Weingartne HX CalVET Net Tow Start gak8 12/ 10/01 11: Pinchuk HX CalVET Net Tow End gak8 12/ 10/01 11: Pinchuk HX CTD88 Start gak9 12/ 10/01 12: Weingartne HX CTD88 End gak9 12/ 10/01 12: Weingartne HX CTD89 Start gak10 12/ 10/01 13: Weingartne HX CTD89 End gak10 12/ 10/01 14: Weingartne HX CalVET Net Tow Start gak10 12/ 10/01 15: Pinchuk HX CalVET Net Tow End gak10 12/ 10/01 15: Pinchuk HX CTD90 Start gak11 12/ 10/01 16: water for zoops Pinchuk HX CTD90 End gak11 12/ 10/01 16: Pinchuk HX MOCNESS Start gak11 12/ 10/01 16: Pinchuk HX MOCNESS End gak11 12/ 10/01 18: Pinchuk HX CalVET Net Tow Start gak11 12/ 10/01 19: Pinchuk 17
18 HX CalVET Net Tow End gak11 12/ 10/01 19: Pinchuk HX CTD91 Start gak11 12/ 10/01 19: Weingartne HX CTD91 End gak11 12/ 10/01 20: Weingartne HX CTD92 Start gak12 12/ 10/01 21: Weingartne HX CTD92 End gak12 12/ 10/01 22: Weingartne HX CalVET Net Tow Start gak12 12/ 10/01 22: Pinchuk HX CalVET Net Tow End gak12 12/ 10/01 22: Pinchuk HX CTD93 Start gak9i 12/ 11/01 1: Weingartne HX CTD93 End gak9i 12/ 11/01 2: Weingartne HX Ring Net Start gak9i 12/ 11/01 2: Pinchuk HX Ring Net End gak9i 12/ 11/01 2: Pinchuk HX CTD94 Start gak8i 12/ 11/01 3: Weingartne HX CTD94 End gak8i 12/ 11/01 3: Weingartne HX CTD95 Start gak7i 12/ 11/01 4: Weingartne HX CTD95 End gak7i 12/ 11/01 5: Weingartne HX CTD96 Start gak6i 12/ 11/01 6: Weingartne HX CTD96 End gak6i 12/ 11/01 6: Weingartne HX CTD97 Start gak5i 12/ 11/01 7: Weingartne HX CTD97 End gak5i 12/ 11/01 7: Weingartne HX CTD98 Start gak4 12/ 11/01 9: Weingartne HX CTD98 end gak4 12/ 11/01 9: Weingartne HX CTD99 Start gak3 12/ 11/01 11: Weingartne HX CTD99 End gak3 12/ 11/01 11: Weingartne HX CTD100 Start gak2 12/ 11/01 12: Weingartne HX CTD100 End gak2 12/ 11/01 12: Weingartne HX CTD101 Start gak1 12/ 11/01 14: Weingartne HX CTD101 End gak1 12/ 11/01 15: Weingartne HX CTD102 Start res2.5 12/ 11/01 16: Weingartne HX CTD102 End res2.5 12/11/01 16: Weingartne 18
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