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首页> 美国政府科技报告 >Stratigraphic Study of Beach Features on the Southwestern Shore of Lake Michigan: New Evidence of Holocene Lake Level Fluctuations
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Stratigraphic Study of Beach Features on the Southwestern Shore of Lake Michigan: New Evidence of Holocene Lake Level Fluctuations

机译：密歇根湖西南岸海滩特征的地层学研究：全新世湖泊水位波动的新证据

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Research conducted in the Chicago area over the past decade has resulted in detailed interpretation of changes. Stratigraphic studies, coupled with radiocarbon dating, indicate that conspicuous fluctuations of Lake Michigan have occurred during the past 2,000 years - a period previously recognized as one of relatively stable levels. Results of this study indicate a pattern of lake level changes not discernible in the 125-year historically recorded and measured changes; the historically recorded changes in lake level represent only part of a long-term, naturally fluctuating trend that in some cases may have exceeded the maxima and minima of the historically-recorded lake levels.

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