Isotopic typology of the precipitation in the Western Mediterranean region at three different time scales

被引:204
作者
Celle-Jeanton, H [1 ]
Travi, Y [1 ]
Blavoux, B [1 ]
机构
[1] Univ Avignon, Fac Sci, Lab Hydrogeol, F-84000 Avignon, France
关键词
D O I
10.1029/2000GL012407
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Environmental isotopes (O-18, H-2) have been measured, between March 1997 and March 1999, at 10 stations located in the Mediterranean seaside countries (2 in Spain, 1 in Tunisia, 7 in France). Data collected on monthly, event and fractionated basis allow to understand the modifications of the isotopic content of precipitation due to meteorological phenomena. A monthly monitoring shows that the Western Mediterranean has a unique isotopic characteristic that is between Atlantic and Eastern Mediterranean. A daily survey highlights the impact of the origins and trajectories of air masses on the amount and the oxygen-18 content of rainfalls. enriched and higher amount Mediterranean precipitation, depleted and lower amount Atlantic precipitation. At last, fractionated sampling of heavy precipitation allows to establish a typology of the variations of the isotopic composition during a rain event.
引用
收藏
页码:1215 / 1218
页数:4
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