Sunday, 8 October 2017

Islands And Lakes: Well Isle Be Damned...

The largest island in the world, at 2,166,086 square kilometers (8.9 times larger than the UK), is Greenland. Below is a size comparison of Greenland with the contiguous United States. Despite this, Greenland has a population of just over 56,000, making it one of the most sparsely populated areas on Earth. The largest lake is the Caspian Sea, at 371,000 square kilometers, in Central Asia. But of course, you may have learnt this already back in Geography class- and that isn't the point of this blog!


http://www.mylifeelsewhere.com/country-size-comparison/united-states/greenland

Islands within lakes can themselves be an important geographical feature. Grand Isle County, Vermont, is an entire county in the US comprising of lake islands within Lake Champlain. So what is the largest lake island in the world? Manatoulin island (below left), a Canadian island situated in lake Huron, is the largest. At 2766 square kilometers, it is larger than the nation of Luxembourg. The second largest lake island is RenĂ©-Levasseur island in the Canadian province of Quebec. This circular island (below right), is intriguing for a number of reasons. Firstly, the island and its annular lake, the Manicouagan reservoir, are situated in the crater of one of the largest known prehistoric meteor strikes. Secondly, it is actually an artificial island, created from flooding two existing lakes in 1970. At 2020 square kilometers, it is the largest artificial island in the world. Finally, RenĂ©-Levasseur is a rare example of an island which is larger than the lake in which it is situated. 

https://commons.wikimedia.org/wiki/File:Manitoulin_Island.jpg
https://commons.wikimedia.org/wiki/File:Manicouagan-EO.JPG

We can go further, and talk about the largest lakes on islands, and lake islands within them, and lakes on those lake islands. However, I think this would be dull and repetitive. Instead, I've summarised the largest of these various configurations of lakes and islands in the diagram below:


If you really want a headache, think about the island in a lake, on an island in a lake, on an island; a 'third order island'. The largest of these was discovered in 2012 by famous game show contestant and author, Ken Jennings, who spotted it after spending hours scanning Google Earth. The 4 kilometer squared island is located on Victoria Island, Canada and is as yet unnamed and uninhabited. It is highly probable that humans have never even set foot on this unusual piece of land.

https://earthobservatory.nasa.gov/IOTD/view.php?id=85342

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1 comment:

  1. Maps and the geography of maps have fascinated me for decades. I thought i was truly an outlier until i ran across a nurse that shared my fascination back in the 70’s. We worked at the same hospital, and both worked nights, so in our downtime and breaks. We would compare impressions and interesting facts we had come across in our separate obsessions.i miss her, and i have yet to come across anyone who shares this interest. I am SO happy to find this site, and anticipate more delicious items now that i know about other avenues of discovery.

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