sydney id tsunami alert, and they said that the wave could be between 10-20cm (four to eight inches) is that big wave??? it sound liek it would just lap at your feet...
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that line is about 10-12 cm that isn a very big wave lol
can someone please explain to me what this means??/
2007-04-01 14:26:43 · 5 answers · asked by ticklish101 2 in Science & Mathematics ➔ Weather
A 20cm rise in sea levels due to a tsunami in the open ocean is significant. 20cm on the beach at Willis Island isn't. The Solomon Islands tsunami caused a huge overreaction in Sydney and many other places along the east coast. Everyone seemed to forget that Australia's east coast is well protected by the Great Barrier Reef. Once Willis Island on the outer Barrier Reef reported it as insignificant, the news media along the east coast should have told people not to worry - but shock-jocks like John Laws and others won't do that, it isn't news.
2007-04-01 22:37:36 · answer #1 · answered by tentofield 7 · 0⤊ 0⤋
No, a ten to twelve centemeter wave would only be about the width of an average grown up persons hand with fingers outstretched from pinky tip to thumbtip or a little shorter. If you pull out a ruler, you will see exactly how big it is. Now if that were meters, it would be pretty significant. Ten meters is thirty two feet roughly which is about the size of a good four story building. The size of wave you are talking about would barely cover your feet were it to come onshore. If you look you will see what I mean on this. Best of blessings,
Maraleh
2007-04-01 22:26:29 · answer #2 · answered by Maraleh H 2 · 0⤊ 0⤋
You have to remember that it's a moving wall of water from the bottom of the ocean to the top of the ocean. It's only as it nears shore and the depths become shallow, that the wave raises.
If it's a two hundred foot moving wall of water, that's a lot of force.
2007-04-01 22:16:15 · answer #3 · answered by rann_georgia 7 · 0⤊ 0⤋
no,20 cm is nothing it is smaller than the usual waves :-) so no worries.
Remember the endonesian earthquke,magnitude 9!,it created 15 metres tsunami waves so it killed 250.000 people
if a tsuanami is 5 metres or higher than it is dangerous
2007-04-02 04:44:47 · answer #4 · answered by Hurricane 5 · 0⤊ 0⤋
If you want to see the photo of the wave that hit Townsville head to the JCU website, on the news feed it has the photos of the wave...:)
2007-04-02 20:51:35 · answer #5 · answered by Anonymous · 0⤊ 0⤋