levine's blog

Continued tow-yo until finally crossed the temperature front seen in underway data. CTD aboard about 0430 after 30 downcasts.

Continued toward Newport with boom ADCP at 4 knots.

At 0645 recovered boom and speed increased to 10 knots (foggy)

Should be at whistle buoy by 1400 and dock by 1500.

Completed the radiator pattern survey of squirt feature.

SH-S2, SR-S1, NH-40, NH-55, SR-55, SH-S3, SH-S4, SR-S2, NH-70, NH-85, SR-85 (casts 541-551). Last cast at about 1800 local.

Boom mounted ADCP put into place by Dave O'Gorman and Walt Waldorf. Tried to go 5 knts, but too much vibration. Some attempts were made to secure more firmly. In the end top speed is about 4 knts.

Proceeded on a line from SR-85 to Newport.

Continued CTD stations mapping out the "squirt".
Stations: SR-55, SR-65, SR-75, SR-85 (casts 534 thru 537).
No cast was done at NH-65 to save time.

Proceeded from NH-65 to NH-10 for mooring operations starting about 1300 local.

NH-10 mooring:
* temperature/conductivity instruments attached to Spectra line using black tape and special pipe wrap tape. This operation was done laying the entire Spectra line on the deck.
* The fluorometer/backscatter sensor frame (Tim Cowles) was attached with modified Walt's clamps.

Safety talk conducted at 0910.
Left the Newport dock promply at 0955 and headed for NH-10.

Straightaway after lunch mooring recovery operations began. First pass by buoy (named Alder) resulted in breaking anemometer with ship's crane hook. Second pass was successful. Crane lifted Alder buoy and set it on deck, draping the mooring wire over the starboard side. The buoy was secured and the mooring wire disconnected from buoy. The load of the mooring wire was transferred to the trawl wire and fed through the A-frame. All instruments and the anchor were successfully recovered.

Wecoma configured for Leg 1:
* Radiation Van installed on 01 deck
* Boom mount installed on the port side
* Gifford block mounted on A-frame for mooring work
* The -80 degree freezer installed in dry lab
* A -20 degree freezer installed in wet lab

Added to ship flow through system:
* CO2 - Wiley Evans
* Alkalinity - Robert Hart

Loaded equipment for mooring deployment at NH-10:
* "Lodgepole" buoy
* Mike Kosro's ADP buoy
* 2 anchors (a 1 railroad wheel & a 3 railroad wheel)

Other scientific instrumentation:
* Tim Cowles mounted his 600 kHz ADCP on the boom
* An ISUS from Ricardo Letelier installed on ship CTD, using external battery pack