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A simple Yahoo! search on "biggest wave" returned thousands of web pages. Fortunately, one of the first sites listed provided the answer. The "Awesome Stats" section of Extreme Science claims the biggest wave on record occurred in Lituya Bay on the southern coast of Alaska in 1958. An earthquake measuring 8.3 on the Richter scale hit the area and shook loose an estimated 40 million cubic yards of dirt and glacier from a mountainside at the head of the bay. When the debris hit the water, a massive 1,720-foot wave was created and washed over the headland. How did the scientists know
the wave was so incredibly enormous? Simple. To measure the height of the wave, scientists found the high-water mark -- the line where the water reached it's highest point on land. Keep in mind that this probably isn't the biggest wave ever, just the biggest witnessed by a human. As a matter of fact, three fishing boats witnessed the Lituya Bay event. Unfortunately, two people on one of the boats were killed. Incredibly, the other two boats rode the waves and their occupants survived.
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