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这是发生在全新世中期的一次气候突变,其特点是气候变冷、变干。虽然Bond[1]的冷事件年表把它定为5.9kaBP,但是大多数大西洋深海沉积给出的年表为5.5～
This is a sudden climate change that took place in the mid-Holocene. It is characterized by cold and dry climates. Although Bond [1] chronology of cold events set it at 5.9kaBP, most of the Atlantic Ocean sediments give a chronology of 5.5 ~