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腾讯网
22 小时
研究显示,400年前,阿拉伯半岛经历了五倍于现在的极端降雨
盐水的化学性质保留了未受干扰的沉积层,为全新世晚期的降雨趋势提供了独特而高度准确的记录。研究小组发现,在过去的2000年里,阿拉伯地区要湿润得多,该地区曾经是一片植被繁茂的大草原,大约200年前,降雨量是现在的两倍。
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