Jules Verne: Twenty Thousand Leagues Under the Seas

SECOND PART
CHAPTER 19: The Gulf Stream (continued)

It is indeed a river that runs independently through the middle of the Atlantic, its waters never mixing with the ocean's waters. It's a salty river, saltier than the sea surrounding it. Its average depth is 3,000 feet, its average width sixty miles. In certain localities its current moves at a speed of four kilometers per hour. The unchanging volume of its waters is greater than that of all the world's rivers combined.

As discovered by Commander Maury, the true source of the Gulf Stream, its starting point, if you prefer, is located in the Bay of Biscay. There its waters, still weak in temperature and color, begin to form. It goes down south, skirts equatorial Africa, warms its waves in the rays of the Torrid Zone, crosses the Atlantic, reaches Cape São Roque on the coast of Brazil, and forks into two branches, one going to the Caribbean Sea for further saturation with heat particles. Then, entrusted with restoring the balance between hot and cold temperatures and with mixing tropical and northern waters, the Gulf Stream begins to play its stabilizing role. Attaining a white heat in the Gulf of Mexico, it heads north up the American coast, advances as far as Newfoundland, swerves away under the thrust of a cold current from the Davis Strait, and resumes its ocean course by going along a great circle of the earth on a rhumb line; it then divides into two arms near the 43rd parallel; one, helped by the northeast trade winds, returns to the Bay of Biscay and the Azores; the other washes the shores of Ireland and Norway with lukewarm water, goes beyond Spitzbergen, where its temperature falls to 4 degrees centigrade, and fashions the open sea at the pole.

It was on this oceanic river that the Nautilus was then navigating. Leaving Old Bahama Channel, which is fourteen leagues wide by 350 meters deep, the Gulf Stream moves at the rate of eight kilometers per hour. Its speed steadily decreases as it advances northward, and we must pray that this steadiness continues, because, as experts agree, if its speed and direction were to change, the climates of Europe would undergo disturbances whose consequences are incalculable.

Near noon I was on the platform with Conseil. I shared with him the relevant details on the Gulf Stream. When my explanation was over, I invited him to dip his hands into its current.

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