Comments on: Earth Week Puzzler #4 http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/?src=earthmatters-rss Earth is an amazing planet, and the one that matters most to us. Let’s have a conversation about it. Wed, 01 May 2013 01:19:52 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Jim Gorycki http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12183 Jim Gorycki Tue, 30 Apr 2013 10:56:40 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12183 Myakka River State Park in florida

]]> By: Marzio http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12164 Marzio Sun, 28 Apr 2013 00:05:43 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12164 Nazca, Peru?

]]> By: Emmanuel Mulehane http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12153 Emmanuel Mulehane Fri, 26 Apr 2013 18:37:54 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12153 I think the visible light satellite image represents a limestone country,especially what is called a ‘Karst Scenery’The rounded or ovoid features visible on this photo are most likely depressions in karst landscapes called Dolines or Swallow holes.I am not sure about the specific location of the scenery but my guess would be somewhere in South America.

]]> By: Angie Connelly http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12143 Angie Connelly Fri, 26 Apr 2013 04:36:52 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12143 Somewhere is west-central Asia, southern Russia? around the Aral sea, the lighter colored patches appear to be somewhat square (maybe rhomboid?) indicating agriculture that is no longer viable. Combined with the drying lakes (the older, larger lake boundaries are visible), this indicates an area with persistent drought. However, this general region has literally 1000′s of small lakes, can’t pin point it.

]]> By: Dale Lanan http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12141 Dale Lanan Fri, 26 Apr 2013 03:26:41 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12141 Limestone cavern collapse over a wide area of coral deposits with high water table. So perhaps Florida, but the interesting thing is the timing. This view is of land likely to be flooded by sea rise as present extinction event proceeds. http://arctic-news.blogspot.com/2013/04/another-link-between-co2-and-mass-extinction-of-species.html It is unlikely coral will be able to survive as well as any life at all. So considering rate of runaway global warming and size of land based ice available for melt this view could easily be open ocean by 2100.

The coral survived the worst previous extinction event at end of Permian I think but with new form with six sides instead of eight but this time will be different. Forcing is so large from man’s use of fossil fuel and supply of methane so large due to shape of Arctic Ocean where shallow edges let methane hydrate ice grow so long that the pall of gas forcing down on the surface will ignite a full blown moist runaway shift of type M planet out of HZ.

]]> By: zak http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12140 zak Fri, 26 Apr 2013 01:44:30 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12140 sinkholes in africa from uranium deposits

]]> By: Scielectrotech http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12136 Scielectrotech Fri, 26 Apr 2013 00:41:19 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12136 Chicxulub asteroid impact outer rings, with the “wells” around.

]]> By: kevn009 http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12133 kevn009 Thu, 25 Apr 2013 19:20:04 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12133 The everglades in Florida

]]> By: Suresh Bhave http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12131 Suresh Bhave Thu, 25 Apr 2013 17:53:39 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12131 This is melting ice-sheet in the Arctic in Canada or Russia, probably Siberia. Water from the melting ice is pooled in the depressions in the ground. These depressions probably are permanent lakes and the melt has swelled them. The pale lines that run along the edges of the lakes are roads and they generally follow the low-lying areas. The irregularly shaped, sharp edged jigsaw piece-like patterns are the ice patches on the higher ground and the rest of the land, which is low-lying, has been freed from the ice sheet.

]]> By: Angie Connelly http://earthobservatory.nasa.gov/blogs/earthmatters/2013/04/25/earth-week-puzzler-4/#comment-12130 Angie Connelly Thu, 25 Apr 2013 17:18:45 +0000 http://earthobservatory.nasa.gov/blogs/earthmatters/?p=3583#comment-12130 The lakes could also be small kettle lakes left over from ancient glaciation in the area, they appear to be partially dry, so timing would be late summer or what ever the dry season in the region is.

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