Presentation is loading. Please wait.

Presentation is loading. Please wait.

Aral Sea: An Un-natural Disaster

Similar presentations


Presentation on theme: "Aral Sea: An Un-natural Disaster"— Presentation transcript:

1 Aral Sea: An Un-natural Disaster http://www.dailymail.co.uk/sciencetech/article-1291433/Shocking-extent-mans-impact-worlds-water.html

2 The Aral Sea used to be the 4 th largest lake in the world. http://www.yourchildlearns.com/images/asia-map.gif

3 Thousands of fisherman made their living from the sea. http://4.bp.blogspot.com/-O-meLPfnnbw/Tnj0cGRHfOI/AAAAAAAAAM4/uurv7KUuW_c/s1600/aral+sea+fishing+past.jpg

4 There were so many fish that a local canning factory exported fish around the world. http://ts4.mm.bing.net/th?id=H.4711627351983267&pid=15.1&w=285&h=175&p=0 http://blogs.unimelb.edu.au/sciencecommunication/files/2012/09/canning-factory.jpg

5 Ships traveled 250 miles from busy northern port cities to southern ports. http://www.4x4info.ru/files/2009/11/port-aralsk-550x412.jpg

6 In the 1950s, the Soviet Union needed more farmland. But most of their land was not arable because it was too cold and frozen – or too hot and dry. http://jb-hdnp.org/Sarver/Maps/WC/wc09_ruseurasclimm.jpg

7 But there were two large rivers flowing into the southern deserts. Soviet leaders decided to use river water for irrigation. They built hundreds of miles of canals into the desert over the next 20 years. http://ts1.mm.bing.net/th?id=H.4902787743875616&pid=15.1&w=238&h=175&p=0

8

9 The longest irrigation canal is 850 miles long. It takes water out of the southern river – the Amu Darya.

10 But all along the way, smaller canals drain water for fields along the river.

11 The northern river (the Syr Darya) is also drained for irrigation.

12 The main crop grown was cotton, which brought cash into the Soviet Union as the cotton was exported around the world. http://i.telegraph.co.uk/multimedia/archive/01818/cotton-montage_1818007i.jpg

13 So much water is pulled out of both rivers that hardly any water makes it to the Aral Sea.

14 Fishermen tried to dig deeper channels out to the sea to keep their boats connected to what was left of the sea. http://www.karakalpak.com/history/sov15.jpg

15 But the sea disappeared faster than they could dig the channels. http://swittersb.files.wordpress.com/2012/08/ships-high-dry-aral-sea.jpg

16 http://www.orexca.com/aral_sea.shtml By 2010, the Aral Sea had almost disappeared. All that was left was two to three small lakes.

17 Aralsk, once a busy port city, no longer has enough water for ships. http://www.4x4info.ru/files/2009/11/port-aralsk-550x412.jpg http://aboutkazakhstan.com/images/aralsk-city-past-scenery.jpg

18

19 Like other inland seas, the Aral Sea is salty. As the sea shrunk, salt concentrations became extremely high. This killed most fish. http://issuu.com/zoienvironment/docs/biodiversity-ca-en-ebook-/search/43

20 The fish canning factory is abandoned. http://4.bp.blogspot.com/_X4qe7-HyiEs/S86KQScWTCI/AAAAAAAACw8/IuJcvqNk40A/s1600/Aral_Sea_08.jpg http://www.demotix.com/news/1559887/pictures-former-glory-aral-sea#media-1559558

21 http://imgc.allpostersimages.com/images/P-473-488-90/22/2273/OGDID00Z/posters/anthony-waltham-ship-s-graveyard-near-aralsk-on-seabed-due-to-water-losses-aral-sea-kazakhstan- central-asia.jpg Much of what used to be sea is littered with stranded, rusting fishing boats.

22 http://25.media.tumblr.com/tumblr_m4ynzaQgSh1qgrwwmo1_500.jpg

23 http://farm3.staticflickr.com/2511/3903304804_c9979ca4fc_z.jpg

24 Dust storms cause sickness from breathing in dust and salt particles. http://www.libartslondon.co.uk/wp-content/uploads/2012/07/aral-dust-2007.jpg

25 Chemicals sprayed on crops poison the air and run off into the small amount of river water still left. http://www.naturepedic.com/blog/wp-content/uploads/2010/12/spraying-pesticides.jpg

26 Half of the Aral Sea was in Kazakhstan, http://www.newscientist.com/data/images/ns/cms/dn3947/dn3947-1_552.jpg

27 but Uzbekistan & Turkmenistan are taking most of the water.

28 So in 2005, Kazakhstan started building a dam to separate the northern part of the Aral Sea http://unimaps.com/aral-north/northaral.gif from the rest. The dam holds in water that comes from the northern river (Syr Darya).

29 Kazakhstan saw improvements with months. The sea is getting closer to Aralsk every year. Fishermen are even returning to the sea.

30 August 2000 August 2012 But the southern part of the sea keeps disappearing.

31 http://www.eosnap.com/public/media/2012/10/aralsea/20121009-aralsea-full.jpg Could this happen to waterways in the United States?

32 Scientists tell us that the Colorado River has existed for 6 million years. It is powerful enough to carve out the Grand Canyon. http://www.humanandnatural.com/data/media/2/colorado_river_in_grand_canyon.jpg

33 But we use its water to irrigate our western deserts and to provide water to desert towns. http://farm7.staticflickr.com/6073/6104914494_f81acd4f71_z.jpg http://images.nationalgeographic.com/wpf/media-live/photos/000/617/overrides/water- grabs-greening-desert-nevada_61753_600x450.jpg

34 So this river… http://2.bp.blogspot.com/_cCJWygu-IUw/TEfq9KuwkdI/AAAAAAAAA_8/BkxXks-RHvo/s1600/whitewater-rafting-maneater-colorado-river.jpg

35 … becomes this. http://images.elephantjournal.com/wp-content/uploads/2012/10/6a00d8341d07fd53ef01543543d292970c-500wi.jpg For 50 years now, the Colorado River has been dying out before it even reaches the ocean. The water is used up before that.

36 And what about our Great Lakes? Their water level is dropping. Billions of gallons a year are taken for irrigation and general water use. http://biology.duke.edu/bio217/2005/ncy/GreatLakes_NASA.jpg

37


Download ppt "Aral Sea: An Un-natural Disaster"

Similar presentations


Ads by Google