Richey, J. E. School of Oceanography, jrichey@u.washington.edu
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FROM THE AMAZON TO SOUTHEAST ASIA: HUMAN INVOLVEMENT IN LARGE SCALE DRAINAGE BASINS
 
The Amazon represents a unique natural laboratory for testing models of regional scale dynamics. It is large scale and represents a series of hydrological and chemical regimes which are not atypical of world rivers, and as yet has large tracts which have not been substantially perturbed. In contrast, the extraordinary pace of development and population growth in Southeast Asia (a region of roughly similar attributes to the Amazon) has placed dramatically increasing pressure on river basins and their downstream coastal ecosystems. The impact on river systems occurs through erosion of the land surface and changes in the nature of the sediment and its associated organic matter and nutrient content from agricultural and urban sources. Changes in hydrology result as an immediate consequence of dam construction and large-scale water diversion for irrigation. Longer-term changes in regional weather patterns and climate will result in altered flow regimes. This contrast allows us t o examine the question,
 
Day: Tuesday, Feb. 2
Time: 09:15 - 09:30am
Location: Sweeney Center
 
Code: SS07TU0915S