Kimberly Gogan: Night Crew Oceanography! More than just a Bongo! April 29, 2014

NOAA Teacher at Sea
Kim Gogan
Aboard NOAA Ship Gordon Gunter
 April 7 – May 1, 2014

MissionAMAPPS & Turtle Abundance SurveyEcosystem Monitoring
Geographical area of cruise:  North Atlantic Ocean
Date: April 29, 2014

Weather Data from the Bridge
Air Temp: 15.5  Degrees Celsius
ind Speed: 7 – 12 Knots
Water Temp: 8.8  Degrees Celsius
Water Depth: 10 Meters

Science and Technology Log

As I mentioned in my previous blogs, there are many layers of science that are happening simultaneously that support the AMAPPS project (see April 9th blog). One of these layers is monitoring the ecosystem with oceanography. In the April 9th blog I explained all about the Bongo Nets, and in April 15th blog I explained about the VPR and it’s plankton picture data. While the rest of the ship slept, the night time oceanography team – Betsy Broughton (scientist from NEFSC in Woods Hole), John Rosendale (lab technician from NOAA Fisheries Howard Labratory in Sandy Hook) and Brian Dennis (volunteer) were busy conducting Benthic science with the Beam Trawl and Van Veen Grab Sampler.

Although  this equipment was not used every night, I was lucky enough to have stayed up some of the night to see these two in action. The Benthic Zone, in a body of water, like the ocean refers to the very bottom of that aquatic ecosystem. The night time science team use a Beam Trawl or a bottom fishing net that is towed along the bottom of the ocean to take a sample of the organisms that live there. The Beam Trawl is attached to a winch that is on the stern of the boat, that one is much larger than the winch that is used to lower the Bongo Nets. The trawl is lowered down until it touches the bottom and then towed along the bottom picking up whatever is in its path. The trawl is then brought to the surface and the sample is sorted in the wet lab and preserved in formaldehyde just like the other samples. The Van Veen Grab Sampler is lowered into the water by the same smaller winch that is used for the Bongo Nets along the port side of the ship. The grab is rigged so that when it touches the bottom of the ocean, two arms open up and grab a large sample of the sediment at the bottom of the ocean. To me it looked just like the suffer muck I know as “clam flats.” Once the Van Veen Grab is brought up to the surface, the arms of the grab are released and the sediment is dropped into a bucket. From there the soil is washed over and over using several sized sieves until all of the muck is washed away and just the organisms, shells and assorted bottom treasures are left. This sample, once cleaned, is also brought back to the chemistry lab for processing in formaldehyde.  The scientists worked at a much faster pace to get all the sediment removed and the  samples processed. It was fun to be able to watch and help out.

Betsy teaching me how to run the computer software for the CTD.

Betsy teaching me how to run the computer software for the CTD.

Personal Log:

For most of the trip, my “assigned” task has been to work with Jerry Prezioso as the day Oceanography team. Jerry and I are in charge of the mid-day Bongo Nets (see April 9th blog). Sometimes we are up early and timing is such that our morning Bongo Net overlapped with night crew’s scheduled time. Sometimes they would start the morning Bongo and Jerry and I would take over and finish the work, or we would just all work together to get it done twice as fast.  Since there were more people to help in the morning, Betsy Broughton (see April 15th blog) was available to help teach me how to run the computer software that was attached to the Bongo called a CTD Sensor.

The graph on the computer software of the  Conductivity, Temperature and density data the CTD collects as the Bongo drops to it's lowest depth.

The graph on the computer software of the Conductivity, Temperature and density data the CTD collects as the Bongo drops to its lowest depth.

CTD stands for Conductivity, Temperature and Depth and it sits above the Bongo Net collecting this data that it sends back to the computers. Generally one scientist is in charge of running the software that turns on the CTD and gets it to start collecting data as it is dropped down into the deep water. The person on the computer is in charge of knowing how deep the Bongo Net should go and telling the winch operator when to pull the Bongo Net back up to the surface. They are also responsible for letting the NOAA Corps officer on the Bridge know when the equipment is ready and telling the winch operator the speed at which the Bongo should be dropped. If this information is not relayed correctly the Bongo Net could go crashing into the bottom of the ocean. It took a couple of days of Betsy overseeing what I was doing, but in no time at all, Jerry felt confident enough in me to leave me at the helm and let me run the software on my own. From net washer to computer software operator, I was moving up!

Kimberly Gogan: The Creatures That Are Always There but We Never See! April 15, 2014

NOAA Teacher at Sea
Kim Gogan
Aboard NOAA Ship Gordon Gunter
April 7 – May 1, 2014

MissionAMAPPS & Turtle Abundance Survey Ecosystem Monitoring
Geographical Area of Cruise:  North Atlantic Ocean
Date: April 15, 2014

Weather Data from the Bridge
Air Temp:  14.1 degrees Celsius
Wind Speed:32  knots
Water Temp: 5.7 degrees Celsius
Water Depth:  24.5 meters

 

Science and Technology Log

Today’s blog is about a piece of equipment called a Video Plankton Recorder or VPR for short. The VPR is attached to  the bottom of a yellow V-fin that helps it stay under water when it is being towed.  Scientists would want to use a VPR instead of a Bongo Net because the Bongo Net is very rough on the creatures that are captured in it as it is towed through the water, especially the very, very soft and fragile ones. The VPR allows the scientists to capture pictures of the creatures in their natural habitat.  It also allows them to get close-ups of these creatures so they can really see what their body structures look like.  The VPR also allows the scientist to collect data on many creatures are found in a given area in the body of water they are looking at.  The VPR has two arms, one on each side about 2 feet apart. One arm has a camera and the other arm has a strobe or flash. The camera and strobe focus on taking pictures between the arms at a rate of 20 pictures a second. The VPR captures all the images as it goes through the water and stores them on a disk drive that the scientists can then upload to their computers. The VPR is generally towed at a speed of around 2-3 knots , or 3-4 miles per hour.

Science Spot Light

The scientist in charge of running the VPR here on the Gordon Gunter is Betsy Broughton.  Betsy is an Oceanographer who works on the night crew here on our ship. Betsy has been working on ships for 31 years and has been to sea for close to 1300 days on 18 ships including 3 international ships!  When she isn’t on a ship she works at  National Marine Fisheries Service (NMFS) in Woods Hole, Massachusetts. Betsy primarily studies baby Cod and Haddock. She is trying to understand  how they survive when they are really little, before they look like a fish, what they eat, where they live and what eats them.  If you want to learn more you can visit the Fish Facts on the NMFS webpage. Betsy also works on designing the sampling gear that will work faster and give scientists more accurate information.  In her spare time, Betsy is an International Challenge Master for Challenge A with Destination Imagination.

Personal Log

We have been on the NOAA Ship Gordon Gunter now for 8 days. It’s really hard to believe how much I have learned in a little over a week. It’s been a crash course in a whole bunch of cool science, as well as life on ship.  It’s been a little crazy with the weather, it has not been very cooperative, especially the wind. Even though the weather has forced us to make changes in our original plans, the scientists have been very flexible and have done what they can to get their jobs done. Today we have come back from Georges Banks and we are going to be passing through the Cape Cod Canal and spending some time in Cape Cod Bay. Luckily there are a lot of Right Whales known to be there. It’s been really fun getting to know all the scientists, NOAA Corps folks and the crew.  Everyone is very nice and it’s amazing how quickly I feel like I have known these people for a long time in just over a week. It is nice to be around like-minded folks who also love science. Yesterday was one of the nicest days, it was warm enough that we didn’t have to wear the mustang suits.  I was also able to decorate and deploy a drifter buoy, but more on that later!

Me catching the beautiful sunset before the storm came in.

Me catching the beautiful sunset before the storm came in.