noaa ship gordon gunter – Page 6 – NOAA Teacher at Sea Blog

April 2, 2008April 2, 2021

Robert Lovely, April 2, 2008

NOAA Teacher at Sea
Robert Lovely
Onboard NOAA Ship Gordon Gunter
March 31 – April 12, 2008

Mission: Reef Fish Ecological Survey
Geographical area of cruise: Pulley Ridge and the West Florida Shelf, Gulf of Mexico
Date: April 2, 2008

NOAA ship GORDON GUNTER at the dock in its home port of Pascagoula, MS.

Weather Data from the Bridge
Visibility: 10-12 miles
Wind Direction: East (080)
Wind Speed: 10 knots
Sea Wave Height: 1-2 foot
Swell Wave Height: 1-2 foot
Seawater Temperature: 23.93 C.
Present Weather Conditions: Partly cloudy

Science and Technology Log

After spinning around in circles in the harbor area so that a specialist could synchronize all the compasses onboard the ship, we left the Port of Pascagoula at about 10 a.m. on Monday, March 31. We would have two full days and nights of transit to our first station at Pulley Ridge, which lies about 54 nautical miles west of the Dry Tortugas (see map above). The weather was cold, cloudy, and windy on the first day, and the waves ranged from four to six feet high. This set the stage for a very rocky first day at sea. On day two, however, the seas flattened out, and the weather was beautiful, with a clear blue sky and only light winds. I could see for miles in every direction, but there was no land in sight.

One of the main objectives of our mission is to identify the extent of live stony corals (order: scleractinia) on Pulley Ridge. This approximately 20-mile long three-mile wide undersea ridge has been designated as a habitat area of particular concern, and consequently carries certain fishing restrictions. Trawling gear, in particular, may not be used. Moreover, fishers are not allowed to drop anchor, use long lines, bottom traps and other equipment that is apt to kill or damage the coral. Because the corals serve as prime breeding habitat for many commercially-important species of fish, it is in the long-term interest of the commercial fisheries to protect areas such as Pulley Ridge. Apart from its importance as fish habitat, though, Pulley Ridge also is unique because it contains the deepest known photosynthetic coral reefs on the U.S. continental shelf. Scleractinian corals, such as Agaricia spp., thrive along with sponges and common species of reef algae in water some 250-feet deep.

Pulley Ridge dive sites. The red dots indicate start and stop points for individual dive transects. Map by Marta Ribera. — Pulley Ridge dive sites. The red dots indicate start and stop points for individual dive transects.

Because the Pulley Ridge reefs lie well below the safe-diving limit of 130 feet, the most practical and efficient way to explore these unique habitats is by means of a remotely-operated vehicle (ROV) equipped with digital still and video cameras. When deployed, the ROV is tethered to the ship by means of a long umbilical and driven by an operator in the control room. The umbilical delivers electric power and control signals to the ROV. From the control room the ROV pilot watches a video monitor and steers the unit much like one would play a video game. Video of the sea bottom is recorded continuously, while high resolution digital still frames are recorded at specific time intervals, such as every two minutes. The scientific field party on this mission consists of six individuals, two of whom are dedicated to the operation and maintenance of the ROV. The rest are biologists. The ship itself carries a crew of 18. Long before we left port, Andrew David, the chief scientist, developed a cruise plan, which called for the ROV to make dives along specific transects. We reached our station for the first transect at about 7:30 this morning.

ROV team Lance Horn (left) and Glenn Taylor prepare the ROV for deployment. — ROV team Lance Horn and Glenn Taylor prepare the ROV for deployment.

After considerable setup, the ROV was deployed and lowered down to the bottom, about 300 feet below the surface. ROV pilot Lance Horn drove the unit about a meter or two above the bottom, recording video continuously and taking digital still images at two-minute intervals. Biologist Stacey Harter added narration to the video by identifying the different fishes and bottom conditions she saw on the monitors. Everything ran quite smoothly for the first half of the transect. But then the video light flooded and popped a breaker, causing the ROV to lose power. The unit had to be brought back onboard the ship for repairs. That was it for the day. “The deep sea bottom is such an extreme environment,” said Andrew David, “that equipment break-downs like today’s are practically a routine part of doing science at sea.”

Personal Log

While watching today’s operations, I couldn’t help but think how easy I have it when I take a class of students out onto Wisconsin lakes to do basic limnology. We work from a small, easyto-maneuver pontoon boat. None of our equipment is too heavy for a student to lift over the side and drop in. Our depths rarely exceed 20 meters. Finally, we collect a considerable amount of data in just a three-hour lab period.

Chief scientist Andrew David feeds out the ROV’s umbilical during deployment.

The ship’s dry lab serves as a control room for the ROV. From left to right: Marta Ribera (GIS specialist), ROV pilot Lance Horn, and Stacey Harter (fish biologist).

September 27, 2007April 2, 2021

Allison Schaffer, September 27, 2007

NOAA Teacher at Sea
Allison Schaffer
Onboard NOAA Ship Gordon Gunter
September 14 – 27, 2007

Mission: Ichthyoplankton Survey
Geographical Area: Gulf of Mexico
Date: September 27, 2007

A beautiful sunset on the Gulf of Mexico

Science and Technology Log

The past few days have been kind of crazy on the ship. Two days ago we did a fire drill and an abandon ship drill. We did these drills the within the first few days of our cruise and I got lost trying to get to my correct area for the abandon ship drill. But this time, not a problem. First we did a fire drill. They sounded the horn and let us know it’s a drill and all the scientists report to the same area where wait for word from the bridge to release us from our drill. While we were waiting, the crew suited up in the gear they would need for a real fire and the Executive Officer, or XO, Nathan Hancock, picked me and one of the other scientists to help out with the fire hose. I was up front and held the nozzle while the other scientist supported the hose. That was my very first fire hose experience! Next we did an abandon ship drill. Everyone on board is assigned a specific area to report to and you must bring with you few items: your survival suit for cold water, a long sleeve shirt, long pants and a hat. Once everyone has reported to their area, we wait for word from the crew to let us know we can head back to the lab. Then yesterday, we did a man overboard drill. To simulate a real man overboard situation, the crew threw a dummy into the water, sounded the man overboard alarm and alerted everyone that there was a man overboard on the port (left) side.

The scientists all report to the same area and have the important job of being the eyes for the crew while they ready the rescue boat. For this drill, we stood up on deck and pointed in the direction of the man overboard as the crew deployed the rescue boat and headed in the direction we were pointing. We did that until the rescue boat was in view of the man overboard. I liked watching the crew in action and seeing how well they worked together. Last night I was able to visit the bridge to see how they run everything up there. My shift was over and the night shift was getting set up to do their first station of the night. I asked if I could stick around and watch them do a station so I would know what it’s like from the perspective of the officers. It was very cool. And then we had our last full station today. I finished my last bongo, Neuston and CTD tonight. We will be doing some more methot samples as we head home for me and some other teachers to bring to their classrooms. So we aren’t completely done with everything, but the cruise is definitely winding down.

Personal Log

Last day of stations was today! This is exciting because it means that we successfully finished the leg of our cruise. But at the same time it’s sad because that means I will be going home soon. And I just figured out how to get everywhere on the ship. As educational and fun as this has been, I am excited to get home. I have so many stories that I can’t wait to share with everyone and hopefully inspire some of my co-workers to get involved with experiences like this.

Addendum: Glossary of Terms

Visibility is how far ahead you can see from the ship. On a very foggy day you may only have a visibility of 10 ft whereas on a clear day you can see all the way to the horizon, or 12 nautical miles.
Wind direction tells you which way the wind is blowing from: 0° is north, 90° is east, 180° is south, and 270° is west.
Sea wave height is the height of the smaller ripples
Swell height is the estimates larger waves
Sea level pressure (or Barometric Pressure) indicates what the trend of the weather has been. High barometric pressure usually means sunny weather and rain can not build up in clouds if they are being squeezed together by high pressure. Low barometric pressure means rainy or stormy weather is on the way.
Present Weather is a description of what the day’s weather is.

– Courtesy of Thomas Nassif, NOAA Teacher at Sea, 2005 Field Season

Field Party Chief or FPC is in charge of the team of scientists on board the ship. This person oversees all activities having to do with collection of samples and is the go to person in case anything goes wrong that the scientists can’t handle. They also act as an extra set of hands when needed.
Bongo Net is two circular frames 60 cm in diameter sitting side by side with two 333 micron nets and a weight in the center to help it sink. At the base of each net is a plastic container used to collect all the plankton that can be easily removed so we can retrieve the samples
Lab Scientist is the scientist that stays in the lab to work the computers recording the data on sample time, sample depth and is the one that relays information to the deck
personnel about when the nets have hit maximum depth. They keep watch in case anything goes wrong underwater.
Deck Scientist is the scientist out on deck getting the nets ready, rinsing the nets, collecting and preserving samples. They are the eyes on deck in case anything goes wrong at the surface or on deck.
Neuston Net is one net 1 X 2 meters with a 947 micron net. Neuston samples are done only at the surface and placed in the water for ten minutes.
The Bridge is the navigational hub of the ship. This is where the officers steer and navigate the ship and where all the equipment is located to help them to do so. It is usually the top deck on ships to give the crew the best visual of the water.
XO or Executive Officer is the second in command to the CO. The XO is responsible for the administration of the ship, supervising department chiefs as well as all officers. They are also responsible for the budget.

September 25, 2007April 2, 2021

Allison Schaffer, September 25, 2007

NOAA Teacher at Sea
Allison Schaffer
Onboard NOAA Ship Gordon Gunter
September 14 – 27, 2007

Mission: Ichthyoplankton Survey
Geographical Area: Gulf of Mexico
Date: September 25, 2007

Science and Technology Log

Today I took my first CUFES sample. CUFES stands for Continuous Underway Fish Egg Sampler. The purpose of this is to map the distributions of fish eggs along our cruise path and the samples are collected every 30 minutes. Basically what happens is there is an intake pump at the bow of the ship to collect water at the surface. From there the water pumped into a collector where the water is run over a sieve to catch any eggs. We preserve the eggs for ID back at the lab on land. This is something that usually just the lab scientist handles, but they allowed me the opportunity to try it out a few times. Along with collecting all the samples, all the information about latitude and longitude, time, and sample number must be input into the computer to collect all the information needed to map the distribution once the numbers have been collected.

Since I have been working as a deck scientist since we started stations, the FPC (Field Party Chief) offered me a chance to stay inside and to see what the lab scientist does while we are working out on deck. This way I would get to see both sides of the collection process. We got the 10 minute to station notice from the bridge, the lab scientist started filling in station information into the computer. She inputs longitude and latitude, time, sample number, and station number in databases for each of the different sample methods. For this station we were doing bongo, Neuston and CTD sample collections. Once we got the OK that the deck and bridge were ready, she sent out the OK that she was ready and the deck got started placing the bongo in the water. She let them know the final depth they were going to give them an idea of how long the collection will take. The sensor that goes in with the bongo relayed all the information about depth back to her. Once we hit maximum depth, she gave them the “all stop” and they started hauling it back in. The Neuston involves the same information being entered into the computer but all she needs to relay to the deck personnel is the 2 minute warning and so they could start hauling the net back in. The CTD seemed very complicated so I just sat quiet and tried not to ask too many questions and distract her. For this the graphs on the screen displayed everything that the CTD reads and as they lowered into the water column I watched as the graphs collected all the data. She let them know how deep to go, when to pull it back up and how long to leave the CTD at each depth. She also fired the three bottles to collect water for chlorophyll measurements. They brought it back on deck and that was it for this station up in the lab.

Personal Log

I am very thankful that I got put on a cruise with such a great team of people. Between the crew and scientists, everyone has been so helpful and accommodating. The FPC always goes out of his way to take pictures for me, explain things further and give me opportunities to experience everything the scientists do. Coming on as a volunteer I wasn’t sure how much of the different tasks they would allow me to do, but they have been great explaining everything and showing me the different things. They have also been helpful showing me different techniques when rinsing samples and helping me out with the different ship terms and names.

Addendum: Glossary of Terms

Visibility is how far ahead you can see from the ship. On a very foggy day you may only have a visibility of 10 ft whereas on a clear day you can see all the way to the horizon, or 12 nautical miles.
Wind direction tells you which way the wind is blowing from: 0° is north, 90° is east, 180° is south, and 270° is west.
Sea wave height is the height of the smaller ripples
Swell height is the estimates larger waves
Sea level pressure (or Barometric Pressure) indicates what the trend of the weather has been. High barometric pressure usually means sunny weather and rain can not build up in clouds if they are being squeezed together by high pressure. Low barometric pressure means rainy or stormy weather is on the way.
Present Weather is a description of what the day’s weather is.

– Courtesy of Thomas Nassif, NOAA Teacher at Sea, 2005 Field Season

Field Party Chief or FPC is in charge of the team of scientists on board the ship. This person oversees all activities having to do with collection of samples and is the go to person in case anything goes wrong that the scientists can’t handle. They also act as an extra set of hands when needed.
Bongo Net is two circular frames 60 cm in diameter sitting side by side with two 333 micron nets and a weight in the center to help it sink. At the base of each net is a plastic container used to collect all the plankton that can be easily removed so we can retrieve the samples
Lab Scientist is the scientist that stays in the lab to work the computers recording the data on sample time, sample depth, station number, sample time and is the one that relays information to the deck personnel about when the nets have hit maximum depth. They are the eyes underwater.
Deck Scientist is the scientist out on deck getting the nets ready, rinsing the nets, collecting and preserving samples. They are the eyes on deck in case anything goes wrong at the surface or on deck.
Neuston Net is one net 1 X 2 meters with a 947 micron net. Neuston samples are done only at the surface and placed in the water for ten minutes.
CTD stands for conductivity, temperature and depth. It is lowered into the water column to get salinity, chlorophyll, dissolved oxygen and turbidity readings at the stations. There are three bottles that are attached to the CTD to take water samples at the surface, mid layer and bottom of the water column at that station.
The Bridge is the navigational hub of the ship. This is where the officers steer and navigate the ship and where all the equipment is located to help them to do so. It is usually the top deck on ships to give the crew the best visual of the water.

September 21, 2007April 2, 2021

Allison Schaffer, September 21, 2007

NOAA Teacher at Sea
Allison Schaffer
Onboard NOAA Ship Gordon Gunter
September 14 – 27, 2007

Mission: Ichthyoplankton Survey
Geographical Area: Gulf of Mexico
Date: September 21, 2007

Weather Data from Bridge
Visibility: 12 nautical miles
Wind direction: E
Wind speed: 12 kts.
Sea wave height: 1 – 2 feet
Swell wave height: 2 – 3 feet
Seawater temperature: 29.0 degrees
Present Weather: Partly Cloudy

Science and Technology Log

Today we had the opportunity to try out two new sample methods. One method is along the same lines as the bongo and Neuston sample but this one is called a methot. A methot is 2.32 X 2.24 m frame with 1/8” mesh netting. The total length of the methot net is 43 feet. It’s huge! It works just like regular plankton net where it has a large opening and then as it moves towards the end it becomes more and more narrow and eventually ends at a collection container. The reason this is my first time doing one is because they are usually done only at night and since the net is so large they must be done in fairly deep water. The deck personnel helped us put the net in the water and then we waited. As the net was brought back on deck, we rinsed it down and collected samples the same way we would a bongo or Neuston sample. Of course with such a large net we collect bigger animals that we would with the other two. We did collect some fairly large fish along with smaller larvae. Our collection wasn’t the most excited some of the scientists have seen but to me, it was very exciting.

The second collection we took wasn’t a plankton collection but a water sample. It is important to know the physical and biological parameters of different areas when collecting. For this, we used a very large (and expensive) piece of technology: a CTD which stands for conductivity, temperature and depth. The CTD also measures dissolved oxygen and can do all of these measurements without actually collecting any water. We do however collect water to look at chlorophyll levels. The CTD frame has three bottles attached to the frame to collect water throughout the water column. Once we open the bottles on deck and set them, the lab scientist has the capability to fire the bottles shut at different depths. All measurements and water collection happen at three areas in the water column. One data and water collection is done at maximum depth, the second at mid depth at the third just a few feet from the surface. After all of the data has been collected, the CTD is brought back on deck where we bring the water samples up to the lab to test. It was definitely an exciting day on deck today.

Personal Log

It has one week since we left port in Pascagoula and I am having such a great time! I forgot how much fun field work is and how excited I get over the smallest things when it comes to animals. I am so fortunate to have such an experience and I can not wait to get some samples home to share with our students. I already have started making some lesson plans!

Addendum: Glossary of Terms

Visibility is how far ahead you can see from the ship. On a very foggy day you may only have a visibility of 10 ft whereas on a clear day you can see all the way to the horizon, or 12 nautical miles.
Wind direction tells you which way the wind is blowing from: 0° is north, 90° is east, 180° is south, and 270° is west.
Sea wave height is the height of the smaller ripples
Swell height is the estimates larger waves
Sea level pressure (or Barometric Pressure) indicates what the trend of the weather has been. High barometric pressure usually means sunny weather and rain can not build up in clouds if they are being squeezed together by high pressure. Low barometric pressure means rainy or stormy weather is on the way.
Present Weather is a description of what the day’s weather is.

– Courtesy of Thomas Nassif, NOAA Teacher at Sea, 2005 Field Season

Field Party Chief or FPC is in charge of the team of scientists on board the ship. This person oversees all activities having to do with collection of samples and is the go to person in case anything goes wrong that the scientists can’t handle. They also act as an extra set of hands when needed.
Bongo Net is two circular frames 60 cm in diameter sitting side by side with two 333 micron nets and a weight in the center to help it sink. At the base of each net is a plastic container used to collect all the plankton that can be easily removed so we can retrieve the samples
Lab Scientist is the scientist that stays in the lab to work the computers recording the data on sample time, sample depth and is the one that relays information to the deck personnel about when the nets have hit maximum depth. They keep watch in case anything goes wrong underwater.
Deck Scientist is the scientist out on deck getting the nets ready, rinsing the nets, collecting and preserving samples. They are the eyes on deck in case anything goes wrong at the surface or on deck.
Neuston Net is one net 1 X 2 meters with a 947 micron net. Neuston samples are done only at the surface and placed in the water for ten minutes.
CTD
Photic Zone

September 18, 2007April 2, 2021

Allison Schaffer, September 18, 2007

NOAA Teacher at Sea
Allison Schaffer
Onboard NOAA Ship Gordon Gunter
September 14 – 27, 2007

Mission: Ichthyoplankton Survey
Geographical Area: Gulf of Mexico
Date: September 18, 2007

Weather Data from Bridge
Visibility: 12 nautical miles
Wind direction: NE
Wind speed: 18 kts.
Sea wave height: 3 – 4 feet
Swell wave height: 3 – 4 feet
Seawater temperature: 27.5 degrees
Present Weather: Mostly Cloudy

Our sample from one of the bongo collections

Science and Technology Log

I woke up this morning excited and ready to go! My morning doesn’t exactly start bright and early at 6am but tends to start much later around 10am. The way life on board the boat works for the team of scientists is that there are two teams: the night watch which is from midnight to noon and the day watch runs from noon to midnight. The field party (that’s what the team of scientists on board is called) consists of six scientists and the FPC (Field Party Chief). I work as part of the day watch along with two of the other scientists. The remaining three work the night shift. Each of the pre-selected stations is about 30 miles apart, so it takes us close to three hours to commute between stations. Once we arrive at the station, all the sample collections and last about 45 minutes to an hour. After we have completed a station we head back into the lab where we have three hours to wait until our next station. During this time we usually watch a movie, read a book, email friends, family or work, do work, play cards, etc. Or in my case, I like to sit out on the deck and look at the ocean since living in Chicago it’s not something I get to see everyday.

Teacher at Sea, Allison Schaffer, rinsing one of the bongo samples into a glass container to be preserved

So this particular morning, I wake up and get dressed just in time for an early lunch before our shift. Today it happens that we reach our station around 11 and since each station takes about an hour, myself and the other scientists from my shift decided we would head up and relieve the night shift early so they can head down for lunch since lunch is only out until noon. Since they had already done the bongo net sampling and preserving, we finished up the station with a Neuston collection. Once we labeled all the samples, I sat down at one of the computers to do some more emailing and started staring out the window in the lab. It was another beautiful day on the Gulf! At least from my perspective it was. What I didn’t see yet on our horizon was a fairly large storm system was headed our way from the Atlantic across Florida in our direction. We arrived at our second station, did our two sample collections and headed back in for dinner. When we got back in, the FPC said that the Commanding Officer (or CO), Lieutenant Commander Brian Parker, said we were going to be heading south to get away from the storm. He said that was our best bet to avoid any bad weather and that the safety of everyone on board is most important to him. We would definitely not be able to hit anymore stations on my shift but we now had the rest of the night off to relax!

Bongo nets coming out of the water getting rinsed down by one of the scientists — Bongo nets coming out of the water getting rinsed

Personal Log

I have been finding some very cool animals in the samples we have collected! The other deck scientist and I spend more time looking through our sieves to see what caught than we do doing anything else. At our first station we got more jellies—and the stinging ones this time! But at our second station, we caught a bunch of juvenile flat fish and eels. And we are getting tons of crabs and shrimp! Little tiny ones! It is still amazing to me the variety of what we are finding and the different colors of everything! Bright blue copepods, orange or purple crabs, purple amphipods, silvery blue and yellow jacks, silvery blue half beaks, yellow and gray triggers, pink shrimp, and more!

Teacher at Sea, Allison Schaffer, taking wire angle measurements for the bongo nets using the inclinometer. — Allison Schaffer taking wire angle measurements for the bongo nets with the inclinometer

Teacher at Sea, Allison Schaffer holding a cannon ball jelly caught in the Neuston net — Allison Schaffer holding a cannon ball jelly caught in the Neuston net