The systematic description of the knowledge accumulated on the physical oceanography, marine chemistry and pollution, and marine biology of the Caspian Sea forms the basis of this book. It presents the principal characteristic features of the environmental conditions of the sea and their changes in the second half of the 20th century. At present, the principal problems of the Caspian Sea are related to the interannual sea level changes and their forecast and to the estimation of the intensity of the chemical pollution of the sea and its impact upon the biota. Special attention is paid to socio-economic, legal, and political issues in the Caspian Sea region. This publication is based on numerous observational data collected by the authors of the chapters during sea expeditions, on the archive data of several Russian oceanographic institutions, as well as on the broad scientific literature mainly published in Russian editions. This book is addressed to the specialists concerned with research in various fields of physical oceanography, marine chemistry, pollution studies, and biology; solving a wide scope of problems from the regional climate to the mesoscale processes; and using a variety of methods from remote sensing of the seas to numerical and laboratory modeling.

This volume is based on the presentations and deliberations of an Advanced Research Workshop (ARW) "Caspian Sea: A Quest for Environmental Security" that was held on March 15-19, 1999, in Venice (Italy). The Workshop was sponsored by the NATO's Division for Scientific and Environmental Affairs, with additional support provided by the Trust for Mutual Understanding (USA). It was organized by Duke University's Center for International Development Research with the guidance of the International Committee of scientists from Russia, United States. Georgia and Italy and organizational assistance rendered by Venice International University. The Caspian Sea region is of profound importance from the perspective of global and regional environmental security. New geopolitical and economic circumstances have created a mixture of competition. reluctant collaboration, and legal, political, economic and ideological wrangling. There is an intense debate over how the Caspian and its resources should be divided among littoral states and how these resources are to be developed. While most littoral states and the international companies strive to develop the area's immense hydrocarbon potential, it is clear that the Caspian's unique and fragile ecosystem is at risk.

On behalf of the Russian Federation Committee on Water Economy, I would like to welcome the participants of the NATO-sponsored Workshop on the Problems of the Caspian Sea and the Circum-Caspian States. The world's largest intercontinental sea/lake is well known for its wealth mineral and fuel resources and sturgeon stocks' the products of which (oil and caviar) are in constant demand on the world market. During the last half-century the Caspian Sea has been the focus of the scientific community concerned with its level fluctuations. We were, and still are, solving a two-faceted issue: to rescue the Caspian Sea and to rescue the population from the Caspian Sea. To rescue the Caspian Sea is to address a broad spectrum of environmental issues related primarily to water pollution by waste water and petroleum products. To rescue the population from the Caspian Sea means that an almost 2.5 m sea level rise in the last two decades has resulted in flooding of vast coastal areas deteriorating economic and social spheres of activity. Solutions to these issues are linked to the numerous mysterious aspects of recent Caspian Sea behavior. Regrettably, the collapse of the USSR has led to a decline of marine observations and control over the use of marine resources in the region. Coordinated international action on the protection of living marine resources have terminated, generating disastrous consequences.

Published in association with the Stockholm International Peace Research Institute.

This book analyzes the legal and economic situation concerning the removal and allocation of natural resources in the Caspian Sea – the largest enclosed body of salt water in the world, which not only constitutes a fragile ecosystem with tremendous fishery resources, but is also rich in oil and gas deposits. After more than 20 years of negotiations, the five littoral states signed the Convention on the Legal Status of the Caspian Sea in August 2018. This book investigates whether this long-awaited agreement may pave a way forward for the sustainable and peaceful development of the Caspian region. The newly introduced regulations on the delimitation of the boundaries, on the Caspian Sea’s natural resources (especially its fossil fuels) and on the transport of goods by shipping and submarine pipelines, are of utmost importance for the successful participation of the Caspian states in global markets. In addition to a detailed analysis of the Convention, the book offers an up-to-date and comprehensive overview of the historical background and current status of issues that are of critical importance for the region’s development and security.

“The Caspian Sea Encyclopedia” is the second one in the new series of encyclo- dias about the seas of the former Soviet Union published by Springer-Verlag. The ?rst volume – “The Aral Sea Encyclopedia” was published by Springer in 2009. The series will be continued by “The Black Sea Encyclopedia” in 2010. Today the Caspian Sea is known to readers thanks to its oil and gas resources, sturgeon and caviar, signi?cant sea-level variations, socio-economic and political problems. The Caucasus and Central Asia (http://eurodialogue. org/?les/fckeditor_?les/Caspian-s- map2. png) vii viii Introduction For more than 250 years the Caspian Sea was shared by two states: Russia (the Soviet Union) and Persia (Iran). After the disintegration of the USSR in 1992, the new independent states of Azerbaijan, Turkmenistan and Kazakhstan have radically changed the political and economic situation in the region. In addition to Russia and Iran, who had determined the situation on the Caspian for a long period, Azerbaijan, Turkmenistan and Kazakhstan are now interested parties, beginning a new stage in the historical development of the Caspian region. This increase in the number of the Caspian legal entities from two to ?ve has given rise to a whole tangle of geopolitical, economic, international legal, ethnic and environmental problems, each of which demands its own approach and settlement mechanism.