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25 May 2009 – SATURN-04 survey.

Submitted by Byron Crump on May 27, 2009 - 9:26am

At around noon we crossed back into the estuary, conducted a CTD cast at SATURN-03, and continued up the estuary to an anchor station just off Tongue Point on the south bank of the channel at river mile 17 (RM-17). We began hourly CTD casts at 1400 and collected water for nutrients, POC/N, SPM, and DOC each hour beginning at 1200.

24 May 2009 –SATURN-03 survey.

Submitted by Byron Crump on May 27, 2009 - 9:24am

At 0900 we collected a water sample from a bottom depth for a full suite of chemistry and nucleic acid analysis. This sample was fresh water, and it served as the first of five bottom-water samples that spanned the flood tide ETM particle resuspension event. The others were collected at 1200, 1300, 1500, and 1600. Also, a surface water sample was collected at 1300. At 1900 we steamed across the bar and out to the coastal ocean to empty the holding tank and dispose of garbage. We spent the night off shore.

23 May 2009 – continue SATURN-01 survey, begin SATURN-03 survey.

Submitted by Byron Crump on May 27, 2009 - 9:21am

Currents during strong ebb tide were too much for our sampling system, and we were forced to suspend sampling for several hours in the early morning.  Misty Blakely sampled every hour for chlorophyll, nutrients, and TDN/P.  We sampled for a full suite of chemistry and nucleic acids at 0200 (s,b), 0600 (s,m,b), 1100 (b), 1120 (s,m,b), 1200 (b), 1430 (b,m,s), and 1630 (b,m,s).

  • Byron Crump's blog

  • 22 May 2009 – Continue plume feature tracking, begin SATURN-01 survey.

    Submitted by Byron Crump on May 24, 2009 - 8:54am

    The plume feature tracking exercise continued until 1100.  We collected water samples for the micro baseline sample set at four depths at stations PLT-7 (cast 85, 0100), PLT-13 (cast 91, 0600), and PLT-18 (cast 96, 1100).  We also collected water at PLT-13 for a primary production measurement and for Florian Moeller’s ammonia oxidation experiments. 

    21 May 2009 – Personnel exchange at Tongue Point

    Submitted by Byron Crump on May 24, 2009 - 8:54am

    In the morning we docked at the Job Corp docks on the east side of Tongue Point. One of the crew on the New Horizon had attended school at Tongue Point, and with that connection we were able to secure permission to dock.This saved the project thousands of dollars, which is what it would have cost to dock at the Astoria city docks. Our hosts gave permission for our science crew to take a short walk around campus.

    20 May 2009 – Beaver Army Dock and salt gradient survey

    Submitted by Byron Crump on May 24, 2009 - 8:53am

    At daybreak we left the anchorage for a journey up river to the Beaver Army Dock at river mile 53. When we arrived we conducted a CTD cast, collected water, and returned to the estuary to complete the salt gradient survey. We conducted several CTD casts in the south channel near the town of Hammond and collected water at salinities of 10, 25, and 17.

    We then returned to the anchorage for the night.

    19 May 2009 – 100m Isobath survey

    Submitted by Byron Crump on May 24, 2009 - 8:53am

    We conducted CTD casts at stations along the 100m isobath (QRLP-a, QR-19, GHQR-a, GH-21, WBGH-a, WB-19, CRWB-a). Water was collected at GHQR-a for a primary production measurement, and at several other stations for methane measurements and analysis with the Flow-cam. We crossed the bar into the Columbia River estuary around 1700 and stopped near the SATURN-03 station to conduct CTD casts for a salt gradient survey.

    18 May 2009 – La Push Line

    Submitted by Byron Crump on May 24, 2009 - 8:50am

    On our way to the LaPush line we stopped at 0651 at 47deg37.73, -125deg36.865 to collect water for a primary production measurement. We then continued our journey and began sampling the LaPush line at Station LP-52 at 0943. At this station we collected water from three depths (B, M, S) for the standard suite of chemical, biological and nucleic acid samples. I collected a bottom sample for filtration onto a 142 mm diameter 0.2um filter for RNA.

    19 May 2009 -- R/V Point Sur

    Submitted by Murray Levine on May 19, 2009 - 8:48am

    Arrived on schedule 0800 in Astoria city dock Pier 1.  Science crew change.
    Leaving: Levine, Risien, Law, Kosro, Evans
    Arriving: Focht, Sevier

    It is raining, but spirits are high.
    Estimated time of departure is 1500 with Steve Pierce taking over the Cheif Scientist duties.  Good luck Steve!

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