A 5000-year record of extreme floods and climate change in the Southwestern United States

Lisa L. Ely, Yehouda Enzel, Victor R. Baker, Daniel R. Cayan

Research output: Contribution to journalArticle

244 Scopus citations

Abstract

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 Niño 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.

Original languageEnglish (US)
Pages (from-to)410-412
Number of pages3
JournalScience
Volume262
Issue number5132
DOIs
StatePublished - Jan 1 1993

ASJC Scopus subject areas

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