You're right, Peter, and this was the same thing that Vic stated when he sent me this article. I'm so glad that someone here initiated this conversation, as you'll notice that some of the bedding below those sinkholes is composed of sandy sediments instead of an organically based bedrock. The type of sinkholes generated from permafrost thaw will only continue to worsen, given the melting that is occurring due to global warming.
A couple of other points here is that an article like this does not go into any depth to explain if any mining has occurred beneath that layer of sediment or how high the water table is. So the public is led to believe that karst topography is the only reason that sinkholes happen, which is not true.
Lin
On Wed, Apr 10, 2013 at 5:47 AM, Peter Land <peter@pland.org> wrote:
Surely this article is mixing up karst areas with thawing permafrost?
--
__._,_.___
Your email settings: Individual Email|Traditional
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
Change settings via the Web (Yahoo! ID required)
Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured
Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe
__,_._,___
No comments:
Post a Comment