Posted on 10/22/2014 8:31:25 AM PDT by smokingfrog
A powerful earthquake in Alaska sent towering waves up to 30 feet (9 meters) tall crashing down on Hawaii about 500 years ago, leaving behind fragments of coral, mollusk shells and coarse beach sand in a sinkhole located on the island of Kauai, new research finds.
The quake, likely a magnitude 9.0, sent the mighty waves toward Hawaii sometime between 1425 and 1665, the study found. It's possible that another large Alaskan earthquake could trigger a comparable tsunami on Hawaii's shores in the future, experts said.
The tsunami was at least three times the size of the damaging 1946 tsunami, which was driven by an 8.6-magnitude earthquake off the Aleutian Islands. Mammoth tsunamis, like the one described in the study, are rare, and likely happen once every thousand years. There's a 0.1 percent chance it could happen in any given year, the same probability that northeastern Japan had for the 9.0-magnitude 2011 Tohoku earthquake and related tsunami, said Gerald Fryer, a geophysicist at the pacific Tsunami Warning Center in Ewa Beach, Hawaii, who was not involved in the study.
(Excerpt) Read more at news.discovery.com ...
Wasn’t there a big tsunami also after the 1964 Alaska earthquake?
There must be some way democrats can use this information to screw taxpayers out of more money.
The record shows that damaging tsunamis from distant earthquakes reached Hawaii these years: 1837, 1841, 1868, 1869, 1877, 1883, 1906, 1918, 1923, 1933, 1946, 1957, and 1960. Other smaller tsunamis that caused no significant damage in Hawaii were generated by distant earthquakes in 1896, 1901, 1906, 1919, 1922, 1923, two in 1927, 1928, 1929, 1931, 1938, 1944, 1952, and 1964. In a period of 157 years, a damaging or destructive tsunami struck the Hawaiian Islands on the average of once in every twelve years.
http://www.drgeorgepc.com/TsunamiCatalogHawaii.html
Bush’s fault.
Yes. I was in a power plant on one of the islands some years ago, we were about 300 yards from the beach. On one of the units there was a sign marking the "high water line" for a Tsunami that hit (I believe it was the '64). The sign was 12 ft. above the ground.
Curious story they told of the Tsunami: most of the deaths that occurred were not from the incoming wave, but the receding water, as locals had gone out to pick up fish left stranded and were swept out to sea.
It was the Karl Rove Way-back Machine—Republicans traveled back in time and caused global warming that loosened the tectonic plates and caused the earthquake that produced the tsunami wave that hit the island because Republicans hated the indigenous people of Hawaii.
That's a bold-faced lie. They only hated the women and minorities...
Love your graphic.
The first settlers of the Hawaiian Islands likely came from the Marquesas Islands some time between A.D. 200 and A.D. 500. The Marquesas Islands are a ring of ten steep volcanic islands about 2,500 miles (4,023 km) southeast of the Hawaiian Islands, 740 miles (1,191 km) northeast of Tahiti, and 3,700 miles (5,955 km) west of Peru.
http://www.hawaiianencyclopedia.com/first-polynesians-first-hawaii.asp
every 5-10 years and then nothing for 40 years now.... that’s scary
Everyone talks about tsunamis caused by earthquakes and volcanic activity but none talk about tsunamis caused when large sections of islands suddenly breakoff and slide into the sea.
This activity produces an oceanic energy pulse equal to the volume of land that slides into the ocean.
Underwater mapping of the north coast of Hawaii shows several deep sea debris fields off the north coast. These debris fields are immediately off shore the near vertical cliffs of the north shore.
thanks!
Eddie would go.
Most people absolutely do NOT understand this. And the scaremongers and alarmist hucksters exploit that fact constantly.
What does likely "once every thousand years" mean? That is never clearly explained.
If it happens in 1014 AD and again in 2014 AD, that "likely every thousand years" is true. That statement can only be an average, and accurate, going BACK in time. It is never correct pushing forward into the future.
If was known to happen in 1986 B.C., then again in 1494 A.D,, 1914, 2013 and 2014, the statement. " likely every 1000 years" is still true. Note that it is still true in spite of the fact it happens twice in two consecutive years.
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