This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 1950; volume is
less than 25%.
Climate in the area has become more extreme; dust,
contaminated with pesticides and heavy metals, is blown as far
as Pakistan, China, and the Arctic.
Kazakhstan and Uzbekistan signed treaties to try to save the
Aral Sea in 1992 and 1994. The crisis continued.
In 2003 the Kazakh government announced a plan to build a
dam to raise the water level of the North Aral Sea and reduce its
salinity; the South Aral Sea would be abandoned. Satellite image of
the Aral Sea in the
year 2003 http://news.bbc.co.uk/1/hi/sci/tech/3846843.stm 81 Saving the North,
Killing the South 82 Land Pollution
We could talk about a number of “land
pollution” problems – loss of farmland;
soil erosion; salinization, etc.
Instead we are going to focus on one
aspect of land pollution: solid waste
disposal. In the summer of 2005
the Kok Aral dam,
funded by the World
Bank to save the
northern part of the
Aral Sea, was
Since then the
northern region has
started to fill up – and
even more quickly
than expected. – “Solid Waste” refers to trash and garbage —
not sewage! Americans throw away more trash per
person than any other people on earth —
about 1,600 pounds per person, per year. http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=17241 83 Municipal Solid Waste 2007 http://www.epa.gov/epawaste/nonhaz/municipal/pubs/msw07-fs.pdf 84 What’s in the trash? http://www.epa.gov/epawaste/nonhaz/municipal/pubs/msw07-fs.pdf 14 85 Methods of Waste Disposal 86 Dumps (the not sanitary landfills) There are four methods of solid waste
disposal that are used today:
– DUMP (“landfill” – obsolete in the US)
A village dump in rural
Alaska. Because the
land here is frozen
(permafrost), it is
impossible to construct
a landfill here. US Census Bureau, Statistical Abstract of the United States, 2000;
View Full Document
This note was uploaded on 12/16/2010 for the course GEOG 102 taught by Professor Osborn during the Fall '10 term at San Diego State.
- Fall '10