VOLCANO MADNESS: Re: [Geology2] Fwd: Tenerife Article

Tuesday, October 4, 2011

Re: [Geology2] Fwd: Tenerife Article

Thanks Dean and Lin for your inquiries.

Kimmer

On Tue, Oct 4, 2011 at 1:21 PM, wholead@yahoo.com <wholead@yahoo.com> wrote:

I emailed one of the authors about the question and he got back to me before the day was out. Here is his response:

Sent from my HTC on the Now Network from Sprint!

----- Forwarded message -----
From: "dean.seeley@gmail.com" <dean.seeley@gmail.com>
Date: Tue, Oct 4, 2011 12:39 pm
Subject: Tenerife Article
To: <wholead@yahoo.com>

Sent from my HTC on the Now Network from Sprint!

----- Forwarded message -----
From: "Pablo Dávila Harris" <pdavilah@geociencias.unam.mx>
Date: Tue, Oct 4, 2011 5:50 am
Subject: Tenerife Article
To: "dean.seeley@gmail.com" <dean.seeley@gmail.com>

Hi Dean,

Thanks for your interest, I'm in fieldwork at the moment and cannot extend
far on the subject but basically, the idea of climate change causing large
ocean islands to collapse is due to dramatic changes on sea-level and
ice-cap reconfiguration (e.g. paper from Quidelleur et al... look at my
reference list), which changes the properties on the rocks and its pore
pressure, leading to alteration and eventually make them more prone to
collapse. Of course, this is a cause, in the long term, the trigger is
something different, triggers can be eruptions (like our paper), magmatic
intrusions or strong seismic events. This also needs a huge island with
steep, unstable slopes. So as you can see, it is not only one factor that
applies.

i invite you to have a look at some of the references in my paper so you
can have a broader idea on what causes large island volcanoes to collapse.
For continental volcanoes it's different, although some factors remain the
same.

Best wishes,

Pablo

NB. Invite me to your group!

> Hello,
>
> Sorry to bother you. I was reading an article posted by the University of
> Leicester and it mentioned that large landslides of that type are commonly
> caused by climate change (Mr. Brenney is quoted in the article).
>
> I am not a geologist nor a volcanologist so please forgive my inquiry (I
> ann a member of a Yahoo volcanoes group), but how does that happen? I
> thought it was due to the pyroclastic materials not being stable. Or is
> Tenerife a shield volcano and weathering causes the basalt to fracture?
>
> Again, sorry to bother you. Thank you for your time.
>
> Dean Seeley
>
> Sent from my HTC on the Now Network from Sprint!
>
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--
Dr. Pablo Dávila Harris
--------------------------------
Centro de Geociencias, UNAM
Campus Juriquilla, Querétaro
Tel. +52(442)238 1104 ext. 108
E-mail: pdavilah@geociencias.unam.mx
pablodavilaharris@gmail.com