Cary Atwood, July 29, 2005

NOAA Teacher at Sea
Cary Atwood
Onboard NOAA Ship Albatross IV
July 25 – August 5, 2005

Mission: Sea scallop survey
Geographical Area: New England
Date: July 29, 2005

Weather from the Bridge
Visibility: Clear
Wind direction: NNW (230)
Wind speed: 15 knots
Sea wave height: unknown
Swell wave height: unknown
Seawater temperature: 11.4° C
Sea level pressure: 1012 millibars
Cloud cover: Dense Fog

Question of the Day:

Define these terms used aboard the ALBATROSS IV:  lines, bosun, steam, swell

Yesterday’s answer: Pelagic means “of the sea.”  Lesser shearwaters are part of a larger group of pelagic birds who spend their entire adult lives out in the open ocean.  They rest, sleep, feed and mate on the water.  The only time they return to land is to lay a brood of eggs in the same geographic location where they were born and fledged before they left for the open waters of adulthood.

Science and Technology Log  

Today’s topic is ALBATROSS IV Geography: a mini guide to the important places on the ship.

Fantail—Another name for the stern of the ship.  Since this is a ship on which scientific missions are completed, this section of the boat has space to accommodate the gantry and boom, which pulls up the dredge, as well as a full wet lab to process scallops and other groundfish species. Wet Lab—The area in the fantail with touch computer screens and magnetically activated measuring boards and scales to document scallop survey data. Bridge—The enclosed area where navigation and sighting is done by the captain and crewmembers.  A full complement of computers is used to assess position, direction and locations of ships and buoys.

Computer Room—Located on the middle deck, it contains computers with e-mail access, FSCS computers and computer servers.  In every main area of the ship, a computer monitor with a closed circuit view of the fantail can be seen.  This is so the scientists, engineers, and captain can know the status of the fantail area at all times. Galley—Another name for the kitchen area.  Food for the crew is prepared here by Jerome Nelson and served buffet style by Keith.  The menu is posted daily and always includes a wide assortment of meats, breads and vegetables, as well as that all-important treat: ice cream! Hurricane Deck—AKA “Steel Beach”- a small deck above the fantail used for sunbathing and relaxation. Engine Room—Noisy room down in the bulkhead where the engineering crew keeps the two diesel engines running smoothly. Boom and Gantry—Found on the aft deck (otherwise known as the fantail), these are the all-essential components needed to tow the eight-foot net.  The gantry is the large metal A-frame and the boom is the moveable arm or crane, which uses large cables and a pulley system to bring up the net each time. Cabin or stateroom—Sleeping quarters for two or three persons.  It has portholes, bunks and a shared bathroom.

Personal Log 

Today the ocean waters have calmed a bit.  Thursday’s wave action gave new meaning to the term “rock the boat,” which is exactly what we did.  The swells, up to three feet in height, were the distant result of Tropical Storm Franklin as it made its way up into the waters of New England. A good safety rule we learned during our brief introductory meeting was to make sure you gave “one hand to the boat” at all times.  This was especially good advice as my footing placement became increasingly unpredictable.  Ships are built to withstand the high seas, and fortunately, there are plenty of places to put a firm grip as one makes their way around the ship.

Cary Atwood, July 28, 2005

NOAA Teacher at Sea
Cary Atwood
Onboard NOAA Ship Albatross IV
July 25 – August 5, 2005

Mission: Sea scallop survey
Geographical Area: New England
Date: July 28, 2005

Weather from the Bridge
Visibility: undetermined
Wind direction: SSW (217 degrees)
Wind speed:  11 knots
Sea wave height: 0.4’
Swell wave height: 1.4’
Seawater temperature: 18°C
Sea level pressure: 1013.3 millibars
Cloud cover: Obscure, Fog, Haze, Dust

Question of the Day: 

Lesser Shearwaters are common pelagic birds we often sea in great numbers near our ship. What does pelagic mean?

Answer to yesterday’s question: Astropectin species (sea stars) prey primarily on young scallops.  Asteria vulgaris, another kind of sea star will prey upon adult scallops by wrapping themselves around the bivalves and tiring out their muscle.  Once that is done, they will use their mouth to suck out and make a tasty meal of the scallop’s soft, fleshy parts.  Other scallop predators include crabs, lobsters, and some flounder species that eat small scallops.  Wolf fish eat scallops as well.

Science and Technology Log 

I am so pleased to have Dr. Dvora Hart on our cruise.  She has given me a great deal of context regarding the scallop survey conducted aboard the Albatross IV.  As an official operations research analyst, Dr. Hart is responsible for taking the raw data from the yearly scallop surveys and creating mathematical models of past and current surveys and projecting those numbers for future management decisions of the scallop fishery.  Because the fishery is worth about $300 million annually to fishermen, and more than a billion dollars in retail, it is as valuable a fishery resource as the lobster industry.  Together they represent the two most valuable fisheries on the New England coast.

Dr. Hart has worked for the Northeast Fisheries Science Center for over six years now.  Having a strong math and statistics background has put her in a unique position to develop tools and models that help biologists understand the distribution of surf invertebrates. Every three years, stock assessments are reported to local and regional fishery boards with recommendations for the management of scallops.  Needless to say, the messenger is not always a popular person, especially when areas show diminishing populations and should be closed. However, armed with so much longitudinal data can be a benefit, too, in that areas in the past that have been overfished, if left alone, can, over the course of time, recover.  In order to make the scallop fishery a sustainable industry for all who depend on it for their livelihood, a person like Dvora has pioneered the mathematical modeling on scallops’ fishery management.  Her devotion and passion to this endeavor is clear, and one hopes that these management recommendations will enable fishermen to sustain their livelihood for years to come.

Kimberly Pratt, July 20, 2005

NOAA Teacher at Sea
Kimberly Pratt
Onboard NOAA Ship McArthur II
July 2 – 24, 2005

Elegant Tern

Elegant Tern. Photo credit: Sophie Webb.

Mission: Ecosystem Wildlife Survey
Geographical Area: Pacific Northwest
Date: July 20, 2005

Weather Data from Bridge

Latitude: 3602.734 N
Longitude: 12153.520 W
Visibility: 8 miles
Wind Direction: Variable
Wind Speed: light
Sea Wave Height: <1  ft
Swell Wave Height: 2-3  ft.
Sea Level Pressure 1014.0
Cloud Cover: Cloudy
Temperature: 16.0

Heerman’s Gull

Heerman’s Gull. Photo credit: Sophie Webb.

 

Scientific Log

Our days continue to be hazy and cloudy. We are getting more track lines done and are staying “on effort” more frequently, yesterday, we had around 70 sightings of marine mammals.  We are still seeing humpbacks, killer whales, Risso’s dolphins, harbor porpoises, pacific-white sided dolphins, minke whales, beaked whales, Dall’s porpoise, as well as California sea lions, northern fur seals, and elephant seals. The California current is one of the most productive in the world.

Yesterday, afternoon, about 3 miles from Big Sur, a Blue Whale surfaced right on the bow of the ship. It was beautiful to see the whale with the Big Sur coastline in the background.

Northern Fulmar

Northern Fulmar. Photo credit: Sophie Webb

Ornithologists are observing many birds including the resident breeders – Common Murre, Ashy Storm Petrels, Cassin’s Auklets, and Western Gulls.  Additionally, they’ve observed Black-footed Albatross – (Hawaiian Island breeder), Sooty Shearwaters (New Zealand breeders), Pink footed Shearwaters (breed in Chile), South Polar Skua’s (Antarctic breeder), Red Necked Phalaropes, Sabine’s Gulls (Artic breeders), Heerman’s comes up the California current from Mexico, also 95% breed on the same island as the Heerman’s Gull, the Terns winter in Northern Chile, and Southern Peru.

Personal Log

The days are getting busy with sightings as we continue to work track lines in the southern marine sanctuaries.  Although hazy and foggy, the weather has been quite pleasant.  The ocean has been relatively flat, with little waves and small swells.  This makes it easier to sight blows and marine mammals.

Today I’ll be editing video, and hopefully will have some good footage to share with you. We are trying a new way to get my logs off the ship.  I will still answer e-mail to scientist7.mcarthur@noaa.gov until Sunday afternoon.

Pinkfooted Shearwater

Pinkfooted Shearwater. Photo credit: Sophie Webb

Sooty Shearwater

Sooty Shearwater. Photo credit: Sophie Webb

Photos by: Sophie Webb