期刊名称：Science et changements planétaires / Sécheresse
印刷版ISSN：1147-7806
电子版ISSN：1777-5922
出版年度：1995
卷号：6
期号：1
页码：95-102
出版社：John Libbey Eurotext
摘要：Authors Jean-Emmanuel Paturel , Éric Servat , Brou Kouame , Jean-François Boyer , Hélène Lubes , Jean-Marie Masson Antenne hydrologique Orstom, 06 BP 1203, cidex 1, Abidjan 06, Côte d’Ivoire, Orstom, BP 5045, 34032 Montpellier cedex, France, , Laboratoire d’hydrologie et modélisation, Université Montpellier-II, 34095 Montpellier cedex 5, France Page(s) : 95-102 Published in: 1995 The drought affecting the Sahel regions of west Africa over the past twenty years seems to have hit other areas further south as well, i.e. countries around the Gulf of Guinea. Evidence of this has come from temporal and spatial analyses of annual rain-fall in Ivory Coast, Togo and Benin. Chronological series of pluviometric indexes confirm a sudden drop in rainfall in the late sixties. Mapped out, the results show a distinct shift is isohyet curves towards the south, amply illustrating the regional extent to the phenomenon.
