Journals 2005/2006

James J. Dornicik
Ward Melville High School, East Setauket, New York

"Investigating Vertical Mixing at Eddy A4" R/V Oceanus July 14 - August 5, 2005

Journal Index: July 14 - 15 - 16 - 17 - 18 - 19 - 20        21 - 22 - 23 - 24 - 25 - 26 - 27         28 - 29 - 30 - 31 August 1 - 2 - 3 - 4 - 5

July 28, 2005
Analyzing the water samples for SF6, and getting the sled ready for its next deployment

After towing the sled through he eddy the for 10 hours the water samples were removed and tested using a Gas Chromatograph to determine their concentrations of SF6. SF6 is highly insoluble in water and will readily come out of a water sample with just some shaking.

After several hours of testing it was determined that no SF6 was found in any of the samples. Therefore we will adjust our tow for tonight.

As of right now it is believed that the eddy moved about 1/2 cycle around every five days. So usually several tows are necessary to find where our patch of tracer molecule has migrated.

The rest of the day was used to prep the sled and bottles for deployment at 20:00.