Debra Brice, November 11, 2003

NOAA Teacher at Sea
Debra Brice
Onboard R/V Roger Revelle
November 11-25, 2003

Mission: Ocean Observation
Geographical Area: Chilean Coast
Date: November 11, 2003

Latitude: S01’59.7754
Longitude: W084’00.4949
Visibility: 10 nautical miles ( nm)

Science and Technology Log

We started the day already underway toward the Equadorian Meteorological Buoy that we were to retrieve for the Equadorian Navy. We estimated that our time of arrival at the buoy’s location would be approximately 1:00pm.  Our first order of the day was a meeting to set up the Underway Watch schedule and train us in our duties during the watch. All of the watches for the scientific teams would be in the main lab. The responsibilities include being in the lab to respond to calls from the bridge, to record events in the log, to be available for other activities as needed. Take a record of hourly sea surface temperatures using a bucket thermometer. (A bucket thermometer is just what it sounds like, a thermometer with a small plastic bucket at the bottom with a line attached that you throw over the side to fill it with seawater and then read the temperature and record in the log). Deploy Argo floats as scheduled from the stern of the ship. I will describe the Argo Floats in more detail tomorrow as well as add a link to the website. You can see the Argo floats and the bucket thermometer on my pictures. Deploy surface drifters (Drogue floats). Assist in launching radiosondes. To work on the deck we need to wear safety vests at all times, hard hats, steel toed boots, strobe lights at night, and we must always work in pairs. We are to inform bridge when we are to deploy the floats. For the ARGO floats the ship comes to a stop, for the Drogue drifters we just throw them overboard while we are still underway.

We arrived at the location of the Equadorian Buoy at 1:15 pm to find that it was about 2 miles off its original location and had been damaged. The small zodiac was deployed from the ship with several crew members and an Equadorian Naval Officer who accompanied us, to help with the retrieval. An Equadorian naval ship met us at the buoy site. The buoy was towed over to the stern of the ship and hauled aboard using the “A” frame. It was secured and re-attached to the crane so that it could be lifted overboard after the instruments from the mooring were removed and returned to the Equadorian ship. The instruments were retrieved and the buoy and instruments were transferred to the Equadorian Naval vessel. Large numbers of strikingly beautiful barnacles and several species of tubeworms, crabs and various amphipods were attached to the bottom of the buoy and all the instruments that were submersed. A large number of fish were observed near the buoy and the crew caught several species of tuna, including yellowfin and bonita from the ship. We removed several samples of the barnacles, worms and amphipods, put them in a bucket and froze them for preservation and study in Arica. We are underway again and will be deploying 2 ARGO floats before tomorrow morning. My watch begins at 00:00 until 04:00 and I will probably be assisting in at least one deployment.

Personal Log

We did life boat, fire and man overboard drills today and I spent most of the afternoon answering e-mails and working on the computer. Finally got my software loaded and was able to tranfer some of my digtal pictures of the trip so far. I spent some time talking to the various scientific groups onboard and learnng about their projects that I will be describing later in our video broadcasts. On this cruise we have scientists from Woods Hole Oceanographic Institution, NOAA Pacific Marine Environmental Labs, INOCAR (Equadorian Oceanographic Institute), Texas A&M meteorologist, NOAA ETL (meteorologists) and the Chilean Navy. We did a broadcast at sunset from the bow of the ship and I am working on lesson plans for the next few hours until my watch begins. Hasta Luego…..

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