James J. Dornicik
July 28, 2005
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.