PURPOSE: To determine physical, plankton and nutrient/chemical conditions over the continental
margin for climate change studies in NE Pacific. In particular, to make CTD and CTD/rosette and net
tow stations along one lines off Newport, OR, and to make continuous observations of currents using ADCP and of surface-layer temperature, salinity and fluorescence by means of ship’s thru-flo system

Barth, Jack A.

Fleischbein, Jane

Huyer, Adriana, 1945-

Kosro, P. Michael, 1951-

Peterson, W. T.

Smith, Robert L. (Robert Lloyd), 1935-

Wheeler, Patricia A.

Undetermined

ScholarsArchive@OSU

1PRELIMINARY CRUISE REPORT,  W9911AR/V WECOMA, 3-5 November 1999GLOBEC/ENSO Long-Term Observations off OregonSubmitted by Jane FleischbeinCollege of Oceanic & Atmospheric SciencesOregon State UniversityCorvallis, Oregon 97331-5503flei@oce.orst.edu, 541.737.5698FILING DATE: 17 November 1999CONTRACT/GRANT NUMBER: NOAA Award NA86OP0589 and OCE-9732386.PRINCIPAL INVESTIGATOR(S):   GLOBEC: Adriana Huyer, Robert L. Smith,P. Michael Kosro, P. A. Wheeler, W. T. Peterson and Jack A. BarthPURPOSE: To determine physical, plankton and nutrient/chemical conditions over the continentalmargin for climate change studies in NE Pacific. In particular, to make CTD and CTD/rosette and nettow stations along one lines off Newport, OR, and to make continuous observations of currents usingADCP and of surface-layer temperature, salinity and fluorescence by means of ship’s thru-flo sys-tem. Table 1 shows the intended CTD station positions, and Table 2 shows the intended biochemicalsampling depths.SAMPLING PLAN:1. Use ship’s intake continuously for Temperature, Salinity, Fluorescence2. Continuous ADCP Profiling (150 kHz transducer) for water velocity and backscattering for bio-acoustics.3. Standard CTD Stations using SBE 9/11 plus CTD system for Temperature, Salinity, Fluorescence,Light Transmission, Oxygen.4. Rosette sampling: 5 liter bottles for nutrients, and chlorophyll.5. Vertical net tows: WP-2 nets 200 m to surface;  Oblique tows:  Bongo nets (70 cm dia) 200 m tosurface at 2-3 kts.CRUISE NARRATIVEA brief overview of the cruise is presented here. An event log is provided in Table 3, and theparticipating personnel are listed in Table 4.  Wecoma departed Newport at 1235. PDT, 3 November1999, after a delay due to malfunction of one of the ship’s main generators. Because of this delay andgenerally rough weather we omitted sampling at NH-1, and began sampling at NH-3 instead. Be-cause of high winds, we deferred all zooplankton net tows at NH-5 and NH-10, and the bongo nettow at NH-15. Improving weather permitted the complete suite of nets at NH-25. Nevertheless, webroke off sampling and steamed to NH-85, at the offshore end of the NH-line. Early the next morn-ing we resumed sampling at NH-85, and began working inshore, making stations as planned. Aftercompleting CTD Station 11 (NH-35), we returned to NH-15, -10 and -5 for the net tows we hadmissed the previous day. When these were completed, we returned to Newport with all due haste, asthe weather forecast called for gale winds  the following day.  We arrived alongside the pier atNewport at about 0730 UT, 5 November 1999.2PRELIMINARY RESULTSVertical sections of parameters measured by the SBE CTD system (temperature, salinity,density, fluorescence voltage, transmissometer voltage, and dissolved oxygen) are presented at theend of this report. The salinity and density sections show the remnants of the coastal upwellingsignature: both surface salinity and density increase toward shore across the outer continental shelf,and fluorescence was relatively high there. The effect of recent winter storms is apparent in the lowlight transmission of near-bottom waters over the shelf. The resuspension of sediments may alsocause low oxygen concentrations in these near-bottom waters, but there is not a direct correspon-dence between oxygen concentration and light transmission.Vertical sections of ADCP velocity observered during the outboard and inboard legs showlarge differences. Given the high variability of winds at this time of year, it is likely that these differ-ences are due to near-inertial currents.The attached zooplankton report was provided by Julie Keister.Table 1. Intended CTD station positions, and intended sampling at each station (showing Stationname, distance (km) to shore, longitude, depth (m), and additional sampling (C: Bio/Chem bottlesampling, N: net tows)Newport Hydro Line along 44-39.1’NNH-1     2 km  124 - 06’W     30 m   NNH-3     5     124 - 07.8'    48NH-5     9     124 - 10.6'    60   C,NNH-10   18     124 - 17.7'    80     NNH-15   28     124 - 24.7'    90   C,NNH-20   37     124 - 31.7    140NH-25   46     124 - 39'     296   C,NNH-35   65     124 - 53'     435   C,NH-45   84     125 - 07'     700   C,NNH-55  102     125 - 22     2885NH-65  120     125 - 36'    2880   C,NNH-85  157     126 - 03'    2900   CTable 4. Names, affiliations, and responsibilities of scientific personnel participating onW9911A.Robert L. Smith Chief Scientist OSU CTDAdriana Huyer Co-Chief Scientist OSU CTDJane Fleischbein Technician OSU CTDAndy Ross Technician OSU CTD, oxygenSheila O’Keef Graduate Student OSU CTDHolly Corwith Graduate Student OSU nuts, chlSheryl Horstman Student Worker OSU nuts, chlJulie Arrington Technician OSU nuts, chlKarin Didriksen Graduate Student OSU nuts, chlWoody Moses Graduate Student OSU nuts, chlJulie Keister Technician HMSC zooplanktonLeah Feinberg Technician HMSC zooplanktonCheryl Morgan Technician OSU zooplanktonMarc Willis Technician OSU martec3Table 2. Intended sample depths and types of subsamples for biochemical sampling.Station, Depth, Dist. from shore Sample Collection DepthsNH-05, 58m, 9k 1, 5, 10, 15, 20, 25, 30, 40, 50, 55m, + Chl max., + salinityNH-15, 89m, 28k 1, 5, 10, 20, 30, 40, 50, 60, 70, 85m, + Chl max., + salinityNH-25, 234m, 46k 1, 10, 20, 30, 40, 50, 70, 100, 150, 200m, + Chl max., + salinityNH-35, 673m, 65k 1, 10, 20, 30, 40, 50, 70, 100, 150, 500m, + Chl max., + salinityNH-45, 670m, 84k 1, 10, 20, 30, 40, 50, 70, 100, 150, 500m, + Chl max., + salinityNH-65, 2851m, 120k 1, 10, 20, 30, 40, 50, 70, 100, 150, 1000m, + Chl max., + salinityNH-85, 2839m, 157k 1, 10, 20, 30, 40, 50, 70, 100, 150, 1000m, + Chl max., + salinityThe depth of the chlorophyll max sampling should correspond with the depth of maximum fluorescence as determinedduring the downcast by the in situ fluorometer.  If one of the predetermined depths already is at the fluorescence max,fire the bottle 5 meters below the fluorescence max (or 3 meters below if a another bottle was already fired there.)  Thedepth reserved for salinity measurements will be determined by the physical oceanography team on duty.Subsample ReplicatesTOC (surface samples only except at NH-05,15,25 and 85, and HH-1,3,4,5) 3Nutrients 1TN (surface samples only except at NH-05,15,25 and 85, and HH-1,3,4,5) 3Chl 2Chl <10 µm, only 3 samples per  station (1m, 10m, chl max) 2POC/PON (samples from depths less than 150 meters) 1-We will also be collecting water occasionally from the flow-through fluorometer that continuously monitors fluorescence while the ship is underway.  The samples will be processed for chlorophyll measurements only.-The Chl<10µm subsamples are only taken at the 1m, 10m, and Chl max depths at each station.-TOC and TN will not be done for all depths, except at NH-5, NH-15, NH-25, NH-85, HH-1, HH-3, HH-4, and HH-5.  At other stations TOC and TN samples will only be collected from the surface bottle.4Table 3. R/V WECOMA Cruise W9911A - Event LogDate Start End Sta. Sta. Latitude Longitude BottomAtmos Wind Wind          Event      Event ID(UT) Time Time No. Name (deg) (min) (deg) (min) Depth Press Dir. Speed(UT) (UT) (m) (mbar) (deg T (kts)3 Nov 1715 Start DAS2035 Depart Newport2200 Start flo-thru2058 Start ADCP2145 1 NH-3 44 39.1 -124 7.8 47 1017 190 39 CTD      WE30799.012237 2 NH-5 44 39.1 -124 10.6 57 1017 CTD with biochem      WE30799.024 Nov 0007 3 NH-10 44 39.0 -124 17.7 80 1016 190 28 CTD      WE30899.010125 4 NH-15 44 39.1 -124 26.3 95 1018.0 190 15 CTD with biochem      WE30899.020201 0212 44 38.7 -124 24.2 vertical net tow      WE30899.030221 0232 44 38.7 -124 24.1 meter net tow      WE30899.040343 5 NH-20 44 39.0 -124 31.7 143 1020.0 280 12 CTD      WE30899.050411 0422 44 38.8 -124 31.8 vertical net tow, 100 m      WE30899.060508 6 NH-25 44 39.1 -124 39.0 295 1021 325 11 CTD with biochem, oxygen      WE30899.070546 0555 44 39.1 -124 39.0 vertical net tow, 100 m, aborted?      WE30899.080604 0612 44 39.1 -124 39.1 vertical net tow, 100 m      WE30899.080617 0623 44 39.2 -124 39.1 meter net tow, 60 m      WE30899.090634 0654 44 39.1 -124 39.1 bongo net tow      WE30899.100740 44 steaming to NH-851410 7 NH-85 44 39.1 -126 3.0 2882 1024 015 15 CTD with biochem      WE30899.111515 cleaned flo-thru filters1600 replaced Niskin bottle 11 (cracked)1656 8 NH-65 44 39.1 -125 35.9 1024 var 2 CTD with biochem, oxygen      WE30899.121755 1805 44 39.0 -125 36.0 vertical net tow, 100 m      WE30899.131809 1815 44 39.0 -125 36.0 meter net tow, 60 m      WE30899.141819 1839 44 39.3 -125 36.1 bongo net tow, 250 m      WE30899.151956 9 NH-55 44 39.0 -125 22.4 2868 1023 060 16 CTD      WE30899.162218 10 NH-45 44 39.1 -125 7.6 741 1022.0 050 12 CTD with biochem      WE30899.172303 2312 44 39.0 -125 8.0 vertical net tow, 100 m      WE30899.182318 2326 44 39.0 -125 7.7 meter net tow, 60 m      WE30899.192329 2345 44 39.0 -125 7.6 bongo net tow, 250 m      WE30899.205 No v 0105 11 NH-35 44 39.1 -124 53.0 452 1019 040 12 CTD      WE30999.010330 0346 NH-15 44 39.1 -124 25.3 1018.0 030 12 bongo net tow      WE30999.025Table 3. R/V WECOMA Cruise W9911A - Event Log continued.Date Start End Sta. Sta. Latitude Longitude BottomAtmos Wind Wind          Event      Event ID(UT) Time Time No. Name (deg) (min) (deg) (min) Depth Press Dir. Speed(UT) (UT) (m) (mbar) (deg T (kts)5 Nov 0434 0441 NH-10 44 39.1 -124 17.8 1017 airs 2 vertical net tow      WE30999.030444 0448 44 39.2 -124 17.8 meter net tow, 60 m, severed net ties WE30999.040455 0502 44 39.4 -124 17.7 bongo net tow, 90 m      WE30999.050519 0525 44 38.9 -124 17.7 meter net tow, 60 m      WE30999.060603 0608 NH-5 44 39.1 -124 10.6 1017.1 125 6 vertical net tow      WE30999.070611 0616 44 39.2 -124 10.6 meter net tow, 60 m      WE30999.080622 0628 44 39.4 -124 10.6 bongo net tow, 65 m      WE30999.090730 Stop flo-thru, DAS, ADCP,       arrive Newport6-126 -125.8 -125.6 -125.4 -125.2 -125 -124.8 -124.6 -124.4 -124.2-500-450-400-350-300-250-200-150-100-500N H -L ine Tem perature, N ovem ber 19997-126 -125.8 -125.6 -125.4 -125.2 -125 -124.8 -124.6 -124.4 -124.2-500-450-400-350-300-250-200-150-100-500N H -Line, Sa lin ity , N ovem ber 19998-126 -125.8 -125.6 -125.4 -125.2 -125 -124.8 -124.6 -124.4 -124.2-500-450-400-350-300-250-200-150-100-500N H -L ine, S igm a-theta , N ovem ber 19999126.0 125.8 125.6 125.4 125.2 125.0 124.8 124.6 124.4 124.2Longitude200150100500Depth (m)F luorescence V oltage, N H -line , N ovem ber 199910126.0 125.8 125.6 125.4 125.2 125.0 124.8 124.6 124.4 124.2Longitude200150100500Depth (m)T ransm issivity  V oltage, N H -line , N ovem ber 199911126.0 125.8 125.6 125.4 125.2 125.0 124.8 124.6 124.4 124.2Longitude500450400350300250200150100500Depth (m)O xygen (m l/l), N H -line , N ovem ber 199912-126 -125.5 -125 -124.5Longitude-500-450-400-350-300-250-200-150-100-500Depth (m) -500-450-400-350-300-250-200-150-100-500 30202020201010101010-10-10-10-10-10-20000000ADCP: Northward current (cm/s) 3-4 November 1999Newport Hydrographic Line  44.6°N13-126 -125.5 -125 -124.5Longitude-500-450-400-350-300-250-200-150-100-500Depth (m) -500-450-400-350-300-250-200-150-100-500 2010101010-10-10-10-20-30-40000000000000ADCP: Northward current (cm/s) 4-5 November 1999Newport Hydrographic Line  44.6°N14Zooplankton report for the November 1999 GLOBEC LTOPWecoma cruise.•  Relative Biomass is scaled low to high (1-5).•  Color is Orange, Green, White, or Tan.  Orange generally indicates the presence of hidensities of lipid-filled large copepods or euphausiids.  Green indicates high phytoplanktobiomass; white may indicate low densities of small copepods, chaetognaths, gelatinouszooplankton, or other; tan coloring generally indicates high densities of copepods, etc.•  Gelatinous biomass scaled 0 (none) to 5.•  Euphausiid biomass scaled 0 (none) to 5.•  Comments:  most abundant gelatinous forms and other obvious species.1/2-m vertical plankton tow:StationRelativeBiomassColorGelatsEuphausiidsCommentsNH5 1 T 1 1 ~10 Pleurobrachia; few euphausiid furciliaNH10 1 T 1 1 ~5 Pleurobrachia; amphipod; few furcilia/juvy euphausiidsNH15 2 T 0 2 juvy euphausiids; a few amphipods; small copepodsNH20 2 T 0 1 Juvy/adult euphausiidsNH25 3 T 0 1 Adult euphausiidsNH45 3 G 0 1 Few euphausiid furcilia; pteropods; phytoplankton; small copepodsNH65 1 W 0 0 Unusual pteropods including Clio pyramidata1-m horizontal plankton tow:StationRelativeBiomassColorGelatsEuphausiidsCommentsNH5 3 T 2 2 4-5 Beroe; ~25 Pleurobrachia; furcilia; amphipodsNH10 2 T 2 1 4-5 Beroe; cumaceans?; ~50 Pleurobrachia; pteropodsNH15 2 T 2 1 pteropods; ~100 Pleurobrachia; amphipodsNH20 Not sampledNH25 3 O 2 3 Many adult euphausiids; several sergestiid shrimp; 4-5 Beroe; pteropodsNH45 4 G 2 2 Phytoplankton; small euphausiid furcilia; Beroe; PleurobrachiaNH65 1 W 0 1 Small euphausiids furcilia; pteropods; small copepods15Bongo tows:StationRelativeBiomassColorGelatsEuphausiidsCommentsNH5 1 T 2 1 40-50 Pleurobrachia; small shrimp; euphausiid furcilia; 3 Beroe; pteropodsNH10 2 O 3 2 Juvy/adult euphausiids; 1 large Beroe; ~50 Pleurobrachia; chaetognathsNH15 2 W 2 3 4 Beroe; chaetognaths; adult T. spinifera; ~20 PleurobrachiaNH20 Not sampledNH25 3 O 0 4 Many adult euphausiids (E. pacifica); 1 fish larva; chaetognathsNH45 2 G 2 2 Phytoplankton; pteropods; 5-6 Beroe; anthomedusaeNH65 1 O 1 1 Large chaetognaths; Clio pyramidata; 1 fish larvaBecause of the weather, NH1 was not sampled.A total of 45 Thysanoessa spinifer  and Euphausia pacifica from stations NH10, NH15, and NH25 werepreserved in 90% acetone for gut pigment analysis.  8 adult euphausiids from NH 25 were incubated for24hrs at 8°C for egg production.  No eggs were produced.

Preliminary Cruise Report, W9911A, R/V WECOMA, 3-5 November 1999 : GLOBEC/ENSO Long-Term Observations off Oregon

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Preliminary Cruise Report, W9911A, R/V WECOMA, 3-5 November 1999 : GLOBEC/ENSO Long-Term Observations off Oregon

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