NOAA Teacher at Sea
Aboard NOAA Ship Gordon Gunter
April 7 – May 1, 2014
Weather Data from the Bridge
Air Temp: 5.5 Degrees Celsius
Wind Speed: 9.0 Knots
Water Temp: 4.6 Degrees Celsius
ater Depth: 41.2 Meters
Science and Technology Log
If Science at Sea is what I wanted, this is the ship for it! The evening of our departure from Newport, R.I. on Monday, April 7th, the group of scientists met in the staff lounge for a meeting of the minds. I soon found out that there was an array of scientist on the ship all with different goals and science they wanted to conduct. On this ship we have two teams of Oceanographers, a day team and a night team. The Oceanographers are generally taking underwater tests and samples using a variety of equipment. We also have the Marine Mammal Observer Team who are on the look out for any sort of mammals that may poke head out of the water such as whales and dolphins.
There is also a group of Birders collecting data on any bird sightings. And lastly we have our Acoustics, or sound team, that is listening for the sounds of marine mammals. I also learned at that meeting that it would take a lot of teamwork and collaboration on the part of each of the Scientist crews, as well as the NOAA Corps and crew to make it all happen.
Every day the representatives from each team have to get together to coordinate the timing of each of the events that will happen throughout the day. The Mammal and Birding Observer teams are on the same schedule and can collect sighting data throughout the day from 7 AM to 7 PM, only stopping for lunch, as they need daylight to conduct their work. The daytime Oceanographers plan their work of collecting samples around the observer teams, sending off their collection equipment before 7AM, at lunch, and then again at 7PM when the observers teams are done. The nighttime Oceanographers are not working during the same time as other scientists so this gives them the opportunity to to do as many test and collections as they can without interrupting anyone else’s work. The Acoustic team can work anytime of day or during any kind of weather without conflicting with anyone as long as the water is deep enough to drop their equipment. It sounds like an easy schedule but there are many things, like weather, technology and location, that could disrupt this carefully orchestrated schedule of science. When that happens, and it has, everyone must be flexible and work together to make sure everyone can conduct the science they need.
Since there is so much science happening on the ship that I am doing every day, I am going to have to share just one thing at a time or I would be writing for hours! Today’s science spotlight is about scientist Jerry Prezioso and the Bongo nets. Jerry is an Oceanographer who works at the NOAA Lab in Narragansett, R.I. Jerry primarily studies plankton distribution. He has been on many trips on NOAA ships since he was 18!
Today Jerry taught me how to do a Bongo net sample that is used to collect plankton from the various water columns. At the top of the net there is a piece of equipment called a CTD (Conductivity Temperature & Depth Unit) that communicates with the computers in the lab on the ship. The scientists in the lab use that piece of equipment to detect how far down the net is going and when it is close to the bottom, as well as collect data on the water temperature and salinity.
Once the CTD is set and turned on, the Bongo net can be lowered into the water. The nets have weights on them to sink them close to the bottom. Once the nets are close a scientist at the computer has the cable operator pull the nets up and out of the water. Once they are on deck they have to be washed down so all the organisms that were caught in the netting go to the cod end of the nets. The cod ends of the nets are opened up and the organisms are rinsed into a sieve where they will carefully be transferred into glass bottles, treated with formaldehyde and sent to a lab for sorting. There were lots of organisms that were caught in the net. Some that we saw today were: Copepods, Comb Jellies or Ctenophora, Herring Larva, aquatic Arrow Worms or Chaetognaths and tons of Phytoplankton and Zooplankton. The Bongo nets are towed several times a day and night to collect samples of plankton.
The start to the trip has been a little rough. It feels like this is the first day we have been able to do anything. Monday we had to sit in port and wait for a scientist to calibrate some equipment before we left so we didn’t get underway until bed time. When we awoke, the weather was bad and the seas were very rough. Several people were very sick and some still are. We were only able to drop one piece of acoustic equipment all day (more on that in another blog). We also had to change the plans on where we were going and move closer to shore due to the weather.
On a ship you need to be very flexible as things are changing all the time! Today was the the first day we were able to do any real science for a sustained amount of time and there were definitely lots of bugs and kinks that needed to be worked out. On top of dropping the BONGO nets with Jerry, I was also able to spend some time and fill in some shifts on the the decks with the Marine Mammal team watching for whales and dolphins. We had a few cool sighting of Humpbacks, Minke, and a Right Whales! (More on them and what they do in another blog too.) On another note, the state rooms are huge and I am sharing a room with one of the acoustic scientists, Genevieve. She is very nice and helpful. The food on the ship is spectacular! I am very surprised how good it is and how many choices there are every meal. All and all things are off to a good start and there is so much more I have to share with everyone about what all these scientist do and it is only our first “real” day!
Did You Know?
Did you know that North Atlantic Right Whales have a V- shaped blow. Their blow holes (two) are separated which gives them the characteristic blow shape.
Check out this link to the website at Northeast Fisheries Science Center’s Protected Species Branch (NEFSC PSB) Right Whale Team and the work we do there. There is an interactive Google map site and wonderful links.