The Tsunami That Wasn't

Of course I'm grateful that the predicted tsunami following the 8.8 earthquake in Chile did not really materialize on Oahu. But after "much ado about nothing" including evacuating for several hours it would be nice if someone explained why all the hub-bub over a 3 foot wave. Three feet is like a normal wave here, we see them everyday.

Well, someone did explain it all and I thought you might want to know too. In Hawaii's "Star Bulletin"on February 28th, Jim Borg explains that the phenomenon at work is called harmonic resonance. He says the perfect example is the Slinky, that little metal spring toy. It takes two people with coordinated effort on each end to get the slinky vibrating in rhythm. If either person is out of sync the whole thing becomes unruly without focus or energy.

In 1960 an earthquake at the same place in Chile but with a harmonic resonance of 30 minutes between waves synced up easily with Hilo on the Big Island and the resulting Tsunami killed 60 people there. This time the wave harmonics were 20 minutes and Hawaii was out of sync.

The awesome power of a Tsunami comes from the towering height of the waves as they reach close to the shore. For this reason many boat owners quickly moved their boats out about a mile on Saturday so that they were not destroyed by the onslaught of waves. You should probably know that tsunamis are not just a single wave, but a series of waves of varying heights. Even this weekend a few people took their surfboards out to try the waves but that is a deadly activity. Going toward the beach is also very dangerous. The rule is if you can see the wave it is too late to escape.

We are so thankful this one did not have our name on it, or should I say our rhythm to it. Believe me there was enough excitement waking up to sirens blaring and moving with our 72-hour kits to higher ground to make me feel like I got my money's worth.