Posts Tagged ‘Geology’

Quote note (#173)

Within the next half-century, the American West Coast faces a far from insignificant threat of massive geological calamity:

When the next very big earthquake hits, the northwest edge of the continent, from California to Canada and the continental shelf to the Cascades, will drop by as much as six feet and rebound thirty to a hundred feet to the west — losing, within minutes, all the elevation and compression it has gained over centuries. Some of that shift will take place beneath the ocean, displacing a colossal quantity of seawater. … The water will surge upward into a huge hill, then promptly collapse. One side will rush west, toward Japan. The other side will rush east, in a seven-hundred-mile liquid wall that will reach the Northwest coast, on average, fifteen minutes after the earthquake begins. By the time the shaking has ceased and the tsunami has receded, the region will be unrecognizable. Kenneth Murphy, who directs FEMA’s Region X, the division responsible for Oregon, Washington, Idaho, and Alaska, says, “Our operating assumption is that everything west of Interstate 5 will be toast.”

In the Pacific Northwest, everything west of Interstate 5 covers some hundred and forty thousand square miles, including Seattle, Tacoma, Portland, Eugene, Salem (the capital city of Oregon), Olympia (the capital of Washington), and some seven million people. When the next full-margin rupture happens, that region will suffer the worst natural disaster in the history of North America.

Realistic accommodation to the prospect of black swan events is psychologically — and even epistemologically — impossible. It’s worth trying to hold onto the thought, however, that unpredictable, singular events, utterly senseless within the principal narrative structures of human history, could at any point throw all expectations for the ordered unfolding of developments off a cliff.

July 15, 2015admin 26 Comments »
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Villarrica

Villarrica00

Villarrica @ Wikipedia.

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May 20, 2015admin 10 Comments »
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