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16 October 2011

HAMNET News: 16 October 2011



Allow me ‘shake’ you out of your chair a little this morning with some interesting data downloaded on Friday around12 noon.

We all hear about the bad quakes around the globe. Many of them go unnoticed simply because they did not measure up to a reportable level on the Richter scale!

But by noon on Friday – from just past midnight on Monday the 10th of October, 63 earth quakes were reported around the world – the highest on Friday morning from Papua New Guinea which measured around 6.7 on the Richter scale. This quake occurred off the coast at a depth of about 45 kilometres and no tsunami warning was issued. Regarded as normal tectonic plate movement!

Papua New Guinea lies on the so called Pacific ring of fire and north of the Islands are many active volcanos that are often in the news.

Approx. 6 hours later on Friday, from Russia, came a report of yet another quake – measuring 6.1 on the Richter scale at a location called Amurskaya Oblast.

But going back to the quakes that occurred this week – where did it all happen?

Thursday in Peru – one measuring 5.1 on the Richer scale. On the same day off the coast of Oregon – 5.3 on the Richter scale.

Again Thursday south of Bali – 6.1 on the Richter scale.

The majority of the quakes registered between 4.2 to about 5.2 on the Richter scale that are just enough to do fair amount damage. The quakes ranged from New Zealand to Indonesia to Guatemala, Peru off the coast of the USA, Pakistan, Japan and so on. An almost predictable range along the Pacific Ring of Fire!

Not outdone, flooding also caused major disruption in Thailand with reports of 260 killed and more than 10, 000 displaced due to seasonal monsoon rains.

In South Africa, we are currently in a very dry high pressure belt and patiently waiting for the tropical moisture to work its way south and start its normal summer rainfall pattern.

Reporting for Hamnet this is Francois Botha – ZS6BUU.