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!

Paige Teamey: November 7, 2011

NOAA Teacher at Sea
Paige Teamey
Aboard NOAA Ship Thomas Jefferson
October 31, 2011 – November 1, 2011

Mission: Hydrographic Survey
Geographical Area: Atlantic Ocean, between Montauk, L.I. and Block Island
Date: November 7, 2011


Weather Data from the Bridge

Early Morning Sunrise

Clouds: 2/8 Cu, Ci
Visibility: 10 Nautical Miles
Wind: SE 21 knots
Temperature 14.0° Celsius
Dry Bulb: 14.1 ° Celsius
Wet Bulb: 12.0 ° Celsius
Barometer: 1024.2 millibars
Latitude: 41°08’232″ ° North
Longitude: 072°04’78″ ° West

Current Celestial View of NYC:

Current Moon Phase:

Current Seasonal Position (make sure to click on “show earth profile):

http://www.astroviewer.com/ http://www.die.net/moon/ http://esminfo.prenhall.com/

OR

http://www.learner.org/

Science and Technology Log

Monday started with my alarm beckoning my eyes to open at 4:15am.  I found my right pointer finger hitting snooze not once, but twice, only to finally move myself from the medium of a dreamlike state to a stand-up position at 4:36.  I made it to the galley for breakfast and a safety brief for the 3102 launch.

Safety Brief. Mapping locations and surveys to be accomplished along Fisher Island.

Today I will be joining COXSWAIN Tom Bascom and HIC  Matt Vanhoy to perform near-shore surveying on sections that have both holidays and missed information.  Holidays do not mean we will be scanning for Santa’s missing sleigh, or find Columbus’s ship Santa Maria run aground, but rather areas that have been previously surveyed and unfortunately recorded absolutely no information.  Holidays occur sometimes due to rough seas, oxygen, as well as possible rocky ocean floors.

After Tom, Matt, and I were lowered in the 3102 by the davit and help of the TJ crew, we went to Fisher Island and began the slow mowing movements of surveying.  The ride to Fisher Island was incredibly bumpy and the entire deck was wet from the swells pushing up at the bow.  Currently there are winds upwards of 16 knots and a chill in the air.  Vanhoy is below deck in the surveying room and Bascom is manning the boat.  Me, well, I am observing for now and loving the chaotic changing seas.  After about 2 hours on deck with Tom I went below to the survey room… that lasted about 20 minutes.  I became really sea sick and returned to deck with Tom.  Matt told me that he often gets sea sick while surveying on the launches and will come up to the stern, puke, and continue on through the day (wow).  When you are on a launch the motions of the ocean are magnified and you can feel the movements much more so than on the ship.

Polygons and

While we were passing by the massive houses located on Fisher Island, Tom commented that unless there is love inside the homes, they are like the numerous clam shells we find already emptied and eaten by fish and gulls.  He said that peace and happiness is not a large house, but the land that surrounds the home.  Tom has been on the open waters for the past 30 years and has found solace in simplicity.  He is a determined individual who presses on and is concerned with following protocol and ensuring the safety of those around him.

After lunch we finished our survey sections and still had 3 hours before needing to return so went around the area and collected bottom samples.  Bottom samples (BS) is probably the most fun thing I have been able to help with on the ship.  We used a  device called the Van Veen Grab system and lowered it into the water. When we thought the Sampler was in contact with the ocean floor we pulled a few times up and down on the line and then hoisted the grabber to the deck.

The bottom samples are taken for the fisheries division as well as for ships that are interested in areas that they will be able to anchor in.  For the most part we pulled samples of course sand and broken clam shells (I hope this is no reflection of Fisher Island).  The further away from the shore line we went the more courser the sand became as well the more rocks we sampled.  Most of the rocks were metamorphic and consisted of marble and a little quartzite.  This surprised me given the location.  I though most of the rocks would be sedimentary based on the surrounding topography and surface features.

I appreciate Tom and Matt taking the time to review and connect me into each process.  Tom taught me how to drive the launch… that was really FUN.  With all of the monitors it was hard to discern between reality and a glamorous video game.  Radar showed me where I was going, and a survey map outlined the areas I was trying to move to in order to take the next bottom sample.  Watching everything at once is not easy to do because you also have to pay attention to the waters.  The shoals (shallow waters) often have “pots” which are lobster traps placed everywhere.  The pots have a cage on the bottom of the ocean floor and a huge buoy at the surface so you can locate them and steer clear of them.

Upon returning to the ship, I watched yet another amazing sunset and Matt take the survey data from the ship and upload it on the ship’s network while Tom and ENS Norman hosed down the salt from the deck and prepped the 3102 for a new day.

ENS Norman Hosing down 3101 after surveying Fisher Island for the day.