A 5000-YEAR RECORD OF EXTREME FLOODS AND CLIMATE-CHANGE IN THE SOUTHWESTERN UNITED-STATES

被引：232
|
作者：
ELY, LL
ENZEL, Y
BAKER, VR
CAYAN, DR
机构：
[1] UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,DIV CLIMATE RES,LA JOLLA,CA 92093
[2] HEBREW UNIV JERUSALEM,INST EARTH SCI,IL-91904 JERUSALEM,ISRAEL
[3] UNIV ARIZONA,DEPT GEOSCI,TUCSON,AZ 85721
来源：
SCIENCE | 1993年 / 262卷 / 5132期
关键词：
D O I：
10.1126/science.262.5132.410
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
A 5000-year regional paleoflood chronology, based on flood deposits from 19 rivers in Arizona and Utah, reveals that the largest floods in the region cluster into distinct time intervals that coincide with periods of cool, moist climate and frequent El Nino events. The floods were most numerous from 4800 to 3600 years before present (B.P.), around 1000 years B.P., and after 500 years B.P., but decreased markedly from 3600 to 2200 and 800 to 600 years B.P. Analogous modern floods are associated with a specific set of anomalous atmospheric circulation conditions that were probably more prevalent during past flood epochs.
引用
收藏
页码：410 / 412
页数：3
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