NOAA Teacher at Sea Dave Grant Aboard NOAA Ship Ronald H. Brown February 15 - March 5, 2012
Mission: Western Boundary Time Series Geographical Area: Sub-Tropical Atlantic, off the Coast of the Bahamas Date: February 13, 2012 Weather Data from the Bridge Position: 26.30N Latitude – 71. 55W Longitude Windspeed: 15 knots Wind Direction: South (bearing 189 deg) Air Temperature: 23.2 C / 74 F Atm Pressure: 1013.9 mb Water Depth: 17433 feet Cloud Cover: 30% Cloud Type: Cumulus Personal Log After an uneventful flight from New Jersey and an eventful trip from the airport at Charleston and through security at the naval base (Taxi drivers don’t like to have their vehicles inspected…), I am setting up my bunk on the Brown. There is a skeleton crew since I have arrived early and everyone else is expected to report tomorrow. Crates of equipment are still being loaded, so it is advisable to stay off the outside decks, and after a quick orientation by every ship’s most important crew member (the chef), I will have the evening free to find my way around the ship and explore the dock. First order of business: Pick up bedding from the laundry down below. Next: PB&J sandwich (Since the galley doesn’t open until tomorrow). Finally: Grab the camera to catch the sunset and an amazing assortment of cloud types. South Carolina’s estuaries are noted for their fine “muff” mud and oyster banks and the tideline at the docks is covered with a dense ring of oysters. Besides filtering great quantities of water and improving its quality, oyster “reefs” provide a secure habitat for a myriad of marinelife, and food for many creatures. (As a frustrated oyster farmer in South Jersey once remarked: “There ain’t much that lives in the ocean that doesn’t like to eat oysters!”) [caption id="attachment_41628" align="aligncenter" width="300"]Image may be NSFW.Clik here to view.
Oyster Chain[/caption]
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Comorant[/caption]
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Grebe[/caption]
The prettiest bird around is the red-breasted merganser, another diving fish eater. Hunters nicknamed mergansers “saw-bills” since their bills have tooth-like notches for snaring fishes. The word merganser comes via Latin mergere meaning “diver” and “to plunge.” Curiously, one of my favorite students always mixes up the word and somehow it comes out as Madagascar (!).
(Images on the Ron Brown by Dave Grant)
The most secretive and uncommon bird around the piers is the pied-billed grebe. It also dives for its dinner, but on the bottom. When frightened (or pestered by a photographer trying to get close in the fading light) it discreetly sinks straight down and disappears like a submarine. Locally, this trick earned the grebe the nickname water witch, and by Louisiana sportsmen Sac de plomb (bag-of-lead).
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Grackle[/caption]
By far the noisiest birds around and the only ones onboard, are boat-tailed grackles. The iridescent, purple-black males are hard to ignore when gathering for the night on our upper rigging. A common bird of Southeastern marshes; since the 1960’s boat-tails have been expanding their range north along the Eastern seaboard beyond Delaware Bay, and now breed all along the New Jersey coast. (A normal extension of their population, or perhaps a response to warming climate? Time will tell.)
Just before dark a peregrine falcon surprised me as it glided past the ship - undeniably the most exciting sighting of the day and a great way to end it.
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“Oh end this day, show me the ocean. When shall I see the sea. May this day set me in emotion I ought to be on my way” (James Taylor)
