Lonnie G. Thompson of Ohio State University said measurements using ice corings and modern navigation satellites show that the oldest ice layers on the famed mountain were deposited during an extremely wet period starting about 11,700 years ago.

• 俄亥俄州立大学的朗尼·汤普逊说，通过冰层取样和现代卫星定位系统的测量，研究人员发现这座名山上最古老的冰层是在约11700年前一段特别潮湿的时期形成的。