lituya bay tsunami damage




I don't mean it was just hanging in the air. I can't help it if they don't believe me. Two were rescued from a dinghy after their boat sank, the others managed to pilot out of the bay on their own power, but at great risk, as the water … Neither water drainage from a lake, nor landslide, nor the force of the earthquake itself led to the megatsunami, although all of these may have contributed. It does, however, highlight the importance of documenting such events for posterity, and to consider such extreme events when making development decisions for coastal areas in areas with high seismicity or vulnerability to tsunamis.USC Tsunami Research Group: 1958 Lituya Bay TsunamiDisaster Pages of Dr. George PC: “The Mega-Tsunami of July 9, 1958 in Lituya Bay, Alaska”BBC Nature: Mega Tsunami – Alaskan Super Wave – Amazing Survival The tsunami reached a height of 524 metres, and was the largest ever recorded.

(Image: D.J. In the past 150 years Lituya Bay has had three other … Lituya Bay is a fjord located on the Fairweather Fault in the northeastern part of the Gulf of Alaska. Two other boats also were anchored in the bay that night; those four people managed to ride out the wave.

Per "Book of World Records 2008" A 1,720 ft high tsunami wave crashed down in Lituya Bay on July 9, 1958.

The earthquake was so strong, and the tsunami came so quickly, that there was not time to get to a safe place. Lituya Bay has a history of megatsunami events, but the 1958 event was the first for which sufficient data was captured at the time. The impact generated a local tsunami that crashed against the southwest shore…

The wave started for us right after that and I was too busy to tell what else was happening up there.The wave caused damage to the vegetation up the headlands around the area where the rockfall occurred, up to a height of 520 metres (1,710 ft), as well as along the shoreline of the bay.Around five megatsunamis are believed to have occurred at Lituya Bay during a period of about 150 years:The mechanism giving rise to megatsunamis was analyzed for the Lituya Bay event in a study presented at the Although the earthquake which caused the megatsunami was very energetic and involved strong ground movements, several possible mechanisms were not likely or able to have caused the resulting megatsunami.

This mass of rock plunged from an altitude of approximately 3000 feet (914 meters) down into the waters of Gilbert Inlet (see map below).

The water from the bay covered 5 sq miles of land and traveled inland as far as 3,600 feet.
I know you can't ordinarily see that glacier from where I was anchored. The narrow entrance of the bay has a depth of only 33 feet (10 m).

Tree-lined shoreline, seen in August 1958, stripped bare by the tsunami that occurred in Lituya Bay, Alaska, USA, on 9 July 1958.
The hat brim is 12 inches in diameter. It seems to be solid, but it was jumping and shaking like crazy. In par­tic­u­lar the amount of sed­i­ment ap­par­ently added to the bay, judg­ing by the sea-floor shape, was much greater than could be ex­plained … The retreats of these glaciers form the present "T" shape of the bay, the Gilbert and Crillon inlets.The major earthquake that struck on the Fairweather Fault had a moment magnitude of 7.8 and a maximum perceived intensity of XI (With the first jolt, I tumbled out of the bunk and looked toward the head of the bay where all the noise was coming from.

Lituya Bay offers the only sheltered anchorage for a long stretch of Southeast Alaska coast, but the bay itself is hardly safe.

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