Extreme Weather Moving Tectonic Plates, Scientists Say

[Cheryl Nelson]

http://www.dailymail.co.uk/sciencetech/article-1377307/extreme-weather-moving-tectonic-plates-scientists-claim.html

[Blavatsky]

from the same link: the european tsunami ...

Role reversal: Is Europe about to move below Africa as direction of tectonic plates shifts?

By Daily Mail Reporter
Last updated at 1:55 PM on 12th April 2011

 

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Europe could be moving beneath Africa as the two continents shift closer together, scientists believe.

Geologists say a pause in the movement between the two continents could mean the tectonic plates are about to change direction, in what has been described as a 'scientifically fascinating' development.

The northern edge of the African tectonic plate has descended under Europe for millions of years but recently this process halted, it has been reported.

On the move: The event of a tectonic plate subduction can result in huge natural events such as volcanic eruptions, earthquakes and tsunamis

Scientists, discussing the issue at the European Geosciences Union (EGU) meeting last week, said they thought Europe could be about to move under Africa.

 

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According to the BBC, this new development could herald the beginning of a rare - and scientifically fascinating - event of a new subduction zone.

The dense rock at the far north of the African tectonic plate, beneath the Mediterranean Sea, has practically sunk under the Eurasian plate, on which Europe sits.

Seismic activity: Could the shifting of Europe's tectonic plate put the region at more risk of natural events?

However, with a landmass that is too light, scientists do not believe Africa will descend any further.

Rinus Wortel, from the University of Utrecht, told BBC News: 'Africa won't sink, but Africa and Europe continue to move together; so where is this taken up?

'It looks possible that on the appropriate timescale, we are witnessing the beginning of subduction of Europe under Africa.'

The Utrecht group's analysis of the Mediterranean Sea's complex geological structure and history reveals that the continents' slow convergence of a few centimetres each year was partially obstructed by the collision of two plates further east, in Turkey.

And further subduction was prevented by the lightness of the African continent. Parts of the African plate that did subduct broke away and are now descending towards the Earth's mantle.

Small risk... but there is concern that European countries are not investing enough money into building a tsunami warning system for the region

Parts of the Eurasian plate have been pulled southwards across the Mediterranean to fill this gap - such as the Balearic Islands, Corsica and Sardinia. The same thing is also happening with Crete.

Scientists' research, which has included the observation of recent earthquakes, suggests the end result could be beginning of a new subduction moving in the opposite direction.

Professor Wortel added: 'We see what motion occurs in the earthquakes, and we see that the fault planes dip towards the South.'

The power of subduction zones to generate huge natural events has been highlighted again by the Japan earthquake and tsunami - but scientists say the Mediterranean's geology is very different.

However, despite the smaller risk of natural events in the region, there is concern that European countries are not investing enough money into building a tsunami warning system.

If there is confirmation that subduction has begun, scientists would be be able to make better assessments of the earthquake and tsunami risk in Europe.

Professor Wortel said: 'We'll keep track of the seismic activity to see whether it continues to indicate this underthrusting of the Mediterranean subsurface underneath North Africa. But it's not going to mature in the lifetime of a scientist.'

Read more: http://www.dailymail.co.uk/sciencetech/article-1375808/Role-reversa...

[Blavatsky]

ulimately expando-earth activity causes tectonic plate movments over time, climate change will cause shifts over time no doubts, but again there is a temporal  element, and space weather causes similar changes. All involve feedback mechanisms  but the issue is ..which of these is most relevant today? for climate change to cause quakes directly it would take millions of years and things would be very patchy, for expando earth probably 100''s years and effects more global and for space weather, decades but global. I think the latter two are more relevant today  in explaining all the quakes. Climate chnage seems to be a half truth

[Blavatsky]

it sounds like a theory for the  sheepie to explain away all the earthquakes that are happening now..."Barbara said to her neighbour Dan " Dan do you not think we are having more earthquakes areound the world lately, I am getting a bit worried" "Is the world ending?" Dan says " Oh Barbara, they said it's just climate change, no need to worry. Once the new quotas for CO2 filter in they will stop", "Oh that's all righ then" said Barbara, "phew, I was worried for a moment"