A 4500-YEAR RECORD OF LARGE FLOODS ON THE COLORADO RIVER IN THE GRAND-CANYON, ARIZONA

被引：85

作者：

OCONNOR, JE

ELY, LL

WOHL, EE

STEVENS, LE

MELIS, TS

KALE, VS

BAKER, VR

机构：

[1] Earth System Science Center, Pennsylvania State University

[2] Department Earth Resources, Colorado State University, FortCollins

[3] National Park Service, Flagstaff AZ 86002

[4] U.S. Geological Survey, Vancouver WA, 98661

[5] Department of Geosciences, University of Arizona

[6] Department of Geography, University of Poona

来源：

JOURNAL OF GEOLOGY | 1994年 / 102卷 / 01期

关键词：

D O I：

10.1086/629644

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A sequence of flood deposits left by the Colorado River in the Grand Canyon, Arizona, provides evidence of at least 15 floods with peak discharges greater than 5500 m3sec-1 over the last 4500 yr. Ten floods during the last 2000-2300 yr had discharges greater than 6800 m3sec-1. One flood, 1600-1200 yr ago, had a discharge exceeding 14,000 m3sec-1, a flow rate more than twice the largest gaged flood. This record of flooding is one of the longest for a major U.S. river, and, combined with the gaged record of twentieth century floods, allows determination of the frequency and history of large floods that have affected key aspects of Colorado River geomorphology.

引用

页码：1 / 9

页数：9

共 33 条

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