Dana Kosztur: Science Lab at Sea, April 15, 2018

NOAA Teacher at Sea

Dana Kosztur

Aboard NOAA Ship Pisces

April 5-18

Mission: SEAMAP Reef Survey

Geographic Area of Cruise: Gulf of Mexico

Date: April 15, 2018

Weather Data from the Bridge

Lat: 29° 35.5335′ N Long: 084° 19.8126′ W
Air Temperature: 18.2°C (64.76°F)
Water Temperature: 20.43°C (68.77°F)
Wind speed: 28.11 knots (32.35 mph)
Conditions: stormy, Seas 7 to 9 feet

Science and Technology Log

While I have been at sea,  I have spent time exploring Pisces and getting to know the people on board. This research vessel is 209 feet long, 50 feet wide, and it has a draft of 20 feet.  It is large enough to hold 39 passengers. The crew of the vessel during my sail consists of 5 NOAA Officers, 5 deck crew, 5 engineers, 4 technicians, 2 stewards and 5 scientists.

NOAA Ship Pisces

NOAA Ship Pisces

Pisces is loaded with science equipment. It has the capability to run acoustic surveys, marine mammal surveys, and various fish surveys. The onboard wet lab is used to process the marine life brought in on trawls, long lines, or bandit reels. In the dry lab, the mission data is stored and processed by the scientists and survey technicians on the ship.  There is a side sample station on the starboard deck where the cameras and ROVs are launched and the trawls are deployed on its stern. The centerboard, on the hull underneath the ship, has mounted sensors that send back various types of data for the scientist to use. This vessel was also engineered to be quiet while underway so it won’t scare marine life. The ship shares the oceanographic, hydrographic and weather data it gathers daily to the outside world.

The Commanding Officer gave me a tour of the bridge.  The bridge is the navigation center. The vessel can be operated from one of four different stations. The science that is being conducted determines where the officer will navigate from. The technology on the bridge is quite amazing.  The dynamic positioning system allows the vessel to stay within certain parameters when supporting science missions. It functions almost like an auto-pilot to keep the ship in the proper position.

Bridge Center Navigation

Bridge Center Navigation

"Moo"ving the ship

“Moo”ving the ship

 

NOAA Ship Pisces is like a floating city.   I had the opportunity to explore the engine room with the ship’s first assistant engineer to see how this mini-city works.  He showed me how they process sewage and garbage aboard the vessel. I learned how the vessel creates its own water and power.  I saw the huge engines. This ship has two 8 cylinder engines and two 12 cylinders engines that power the ship. I also learned how the bilge/ballast system keeps the ship stable and how the bow thruster aids in steering

 

one of four engines on Pisces

one of four engines on Pisces

Personal Log

Most of the days pass quickly and I lose track of time.  I can’t believe I have been at sea for 10 days. Having a different type of workday is very unusual to me.  I have taught for almost 18 years so school days are what I know. It is different to work with adults all day instead of children.  It is a definite change of pace. Today is a slow day. We are currently standing-by due to a weather delay. We have moved closer to shore and are riding out the storm.  Hopefully, we will be able to be back up and running tomorrow.

I will surely miss the trips to the galley when I get home. I have probably gained five pounds on this trip. The stewards that cook on this ship do an amazing job.  It is nice to have already prepared meals. I have gotten spoiled by not cooking too. I know will miss the view when I get back to land. Watching the waves never gets old.  I could stare at the water all day. Even when it is stormy the ocean is beautiful.

Being away from home is hard.  It’s difficult not to harass my team teachers about my classroom while I am gone.  I know that my students are well taken care of but it is hard not to worry. The letters from my students, emails from family,  texts from my husband, messages from friends, and sweet videos from my granddaughter help me combat homesickness.

Did You Know?

The Gulf of Mexico is home to 21 marine mammals and 5 sea turtle species

Student questions

How many species of sharks are in the gulf?  There are approximately 49 shark species in the gulf.

Dana Kosztur: Cruising with Camera Arrays, April 8, 2018

NOAA Teacher at Sea

Dana Kosztur

Aboard NOAA Ship Pisces

April 5-18, 2018

Mission: SEAMAP Reef Survey

Geographic Area of Cruise: Gulf of Mexico

Date: April 8, 2018

Weather Data from the Bridge

Lat: 29o 20.6309′ N      Long: 087o 46.1490′ W
Air Temperature: 18.1oC (64.5oF)
Water Temperature: 22.29oC (72oF)
Wind speed: 10.81 knots (12.4 mph)
Conditions: cloudy,  1 to 2 ft seas

Science and Technology Log

The most important equipment on this mission are the camera arrays. Most of the data collected are dependent on these cameras.  I mentioned in my last entry the two types of camera arrays used in this survey are the SatCam and the RIOT.  The video taken from these camera arrays is stitched together in a five-panel single view. The videos are reviewed and each species that appears is counted and recorded.  Images help the scientist determine the population of fish at a given site. The RIOT is a two-stacked spherical camera housing unit that contains 5 horizontal cameras and one upward facing camera.  The RIOT is the more expensive of the two arrays, but it gives the scientist a greater ability to measure fish when they are captured in the dual videos.  

 

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deploying the RIOT

 

Over the past few days, we have caught several species of fish on the bandit reels. We have caught red snapper, vermilion snapper, and red porgy. These lines have 10 baited hooks and they are dropped into the water on a randomly selected site.  In order to obtain a proper sample of the fish, very little human interaction is made with the reel or the line. This leaves out any fisherman bias and allows for natural sampling of species on the site.  The hook sizes are rotated with each drop. The hooks sizes are 8, 11, and 15. If reel 1 starts with size 8 hook, it will have size 11 on the next drop, and then 15 on the third. Each reel has a different rotating pattern.  This allows each hook size to be in the water over the same site. The data will help determine if a certain hook type is favored by a species of fish.

 

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recording red snapper data

 

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class mascot

 

Personal Log

My students will return to school tomorrow from spring break.  I am a little sad I am not there with them.  They wrote letters for me to read while I was away. I have read some of these already and they are pretty funny.  I want to reassure them that I will not fall overboard and that I am eating well.  I will answer student questions on the bottom of my blogs.

We are in the Gulf of Mexico about 70 to 80 miles offshore, on the Mississippi-Alabama Continental shelf.  I have not been this far out in the gulf before today. It is pretty humbling to look out and just see blue water. The sunrises and sunsets are spectacular. You can’t always see them though. The weather has been pretty gloomy the last two days, so I was unable to see last night’s sunset or this morning’s sunrise.   We had a storm yesterday followed by the much cooler weather today.  I hope this is the only cold snap we get.  I am not a fan of cold boat work.

Did You Know?

Turbidity is how cloudy the water is based on the suspended solids. The higher the turbidity the more sediment, algae and other solids are suspended in the water.  Clear water has low turbidity.

Questions from students:

What is hydrography? The science that measures and describes the physical features of bodies of water and land close to these bodies of water.  Multibeam echosounders are used to obtain hydrographic data.

New species that I have seen:  Red Porgy:  Pagrus pagrus

                           Vermilion Snapper:  Rhomboplites aurorubens

 

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Red Porgy teeth