Sunday, March 13, 2011

Part of Japan Jumped Eight Feet

"Quake moved Japan coast 8 feet; shifted Earth's axis"
Kevin Voigt, CNN (March 12, 2011)

"The powerful earthquake that unleashed a devastating tsunami Friday appears to have moved the main island of Japan by 8 feet (2.4 meters) and shifted the Earth on its axis.

" 'At this point, we know that one GPS station moved (8 feet), and we have seen a map from GSI (Geospatial Information Authority) in Japan showing the pattern of shift over a large area is consistent with about that much shift of the land mass, said Kenneth Hudnut, a geophysicist with the U.S. Geological Survey (USGS).

"Reports from the National Institute of Geophysics and Volcanology in Italy estimated the 8.9-magnitude quake shifted the planet on its axis by nearly 4 inches (10 centimeters)...."

We're learning more about how Earth's inner forces work - which is fascinating in an abstract sort of way, at least for the Lemming, but which is also a very practical matter.

Building earthquake-resistant structures is more a matter of engineering now, and less of guesswork, than it was a half-century ago. Thanks in part, the Lemming's heard, to Japan's interest in not letting a replay of the 1923 Great Kanto Earthquake.

As for a largish chunk of Earth's crust abruptly shifting by eight feet? Looks like that may not be all that unusual. Information Age technology makes it possible to get real-time and near-real-time data about exactly where 'fixed' locations are: and last year we found out that a city in Chile had jumped about 10 feet during another earthquake. March 10, 2010)

As the Lemming observed at the time: Change happens.

Related posts:More:

No comments:

Unique, innovative candles

Visit us online:
Spiral Light CandleFind a Retailer
Spiral Light Candle online store

Pinterest: From the Man Behind the Lemming

Top 10 Most-Viewed Posts

Today's News! Some of it, anyway

Actually, some of yesterday's news may be here. Or maybe last week's.
The software and science stuff might still be interesting, though. Or not.
The Lemming thinks it's interesting: Your experience may vary.
("Following" list moved here, after Blogger changed formats)

Who Follows the Lemming?


Family Blogs - Blog Catalog Blog Directory