The Interocean Routes Through The Amazonian Region

Geography has always played a major role in world politics. In this study, Philip Kelly maps the geopolitics of South America, a continent where relative isolation from the power centers in North America and Eurasia and often forbidding internal terrain have given rise to a fascinating and unique geopolitical structure. Kelly uses the geographical concepts of "checkerboards" and "shatterbelts" to characterize much of South America's geopolitics and to explain why the continent has never been unified nor dominated by a single nation. This approach accounts for both historical relationships among South American countries and for such current situations as Brazil's inability to extend its authority across the continent from Atlantic to Pacific, its traditional competition with Argentina, its territorial expansion toward the continental heartlands, its encirclement by neighbors fearful of such expansion, and its recent rapprochement with Argentina. An important component of this book is the incorporation of the thinking and writing of South American geopolitical analysts, which leads to an interesting inventory of viewpoints on frontier conflicts, territorial expansion, industrial development, economic cooperation, and United States and European relations. Kelly's findings will be important reading for geographers, political scientists, and students and scholars of Latin American history.

Includes entries for maps and atlases.

Recent results from modeling and observational studies demonstrate that the tropical Atlantic is a critical region for processes that maintain the meridional overturning circulation, such as cross-equatorial exchanges, and for sea surface temperature variability that impacts on climate variability of the coupled tropical ocean/atmosphere system. The theme of this book is the inter-hemispheric and inter-gyre exchanges of heat, salt and fresh water, while its goal is to improve the knowledge of the tropical Atlantic dynamics and how it affects the global ocean. A clear understanding of the dynamics of processes that affect the flow of mass and heat between the southern and the northern hemispheres in the upper few hundred meters in the tropical Atlantic and of those associated to the ocean circulation or to surface signals, from decadal, inter-annual to mesoscale periods, becomes necessary to better evaluate their contribution to the interhemispheric mass exchange. These processes are believed to be largely responsible in driving the sea surface temperature, which in turn, is a critical parameter to investigate ocean-atmospheric interactions. Output produced by regional models is also used to complement the observations and to provide additional information on their spatial and temporal variability. The subtropical cells, by bringing water masses subducted in the subtropics to the equator, and zonal currents investigated here contribute to the interhemispheric water exchange. Special attention is also given to the warm and salty anticyclonic rings shed by the North Brazil Current, which are now known to have a much broader impact, not only on interhemispheric water mass transfer, but also on the environment of remote regions. Observations from different sources are blended together, are used to validate model outputs and are also assimilated into models to obtain a more complete and accurate picture of the oceanic circulation and of its time evolution.

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.

Being a series of questions and answers on practical matters for the information of everybody, selected from that department of the Inter ocean known as Our curiosity shop.