Friday 11 March 2011

Another Take on Climate Change, Part II

[Update 2: thanks Greg Cocks for this April 2019 update
Update 1: Part III, more on plate boundary earthquakes]

A year ago today I posted here on the Chilean 8.8 magnitude earthquake.... The recent earhtquakes and tsunamis in Japan and New Zealand, and China and Indonesia before that, truly indicate an increased rate of incidence in these catastrophies! Add to that the more frequent hurricanes and cyclones off the Gulf of Mexico and NE Australia, and fires or floods in N America, Australia and Europe, and we truly wonder what is going on really?

My previous post suggested that an increase in the Chandler Wobble may stress the earth's crust and create more earthquakes, and in unxpected areas - such as middle England and central China on what should be stabler areas inside continental masses. Not only might that herald an impending magnetic reversal, but that in turn may have an effect on climates, as discussed on British Geological Survey's page also mentioned earlier.

Since last year too, debates have raged on how much climate change is man-made and how much is natural. Like in any natural phenomenon it's likely a combination of both. That still begs two questions:
  1. which came first, natural or human changes
  2. which has the greatest contribution of both
Perhaps it's time we mapped these phenomena over space and time, to show the spatio-temporal realtionships? After my last blog, searching again for: earthquakes, WolframAlpha showed some excellent maps and data for earthquakes by magnitude until six months ago. There are many more resources from USGS and elsewhere, but this is a one-stop search:

click on image to go to website

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