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北印度洋孟加拉扇远源区的半远洋沉积记录在氧同位素第２期早期及第３期包含大量高频气候波动信号。该区ＭＤ７７１９０柱状样自第３期起由以富钙质生物壳体和贫钙质生物壳体为主要特色的两类沉积物构成韵律互层，它们的分布状态、互换频率及在生物和化学组分方面的细微变化反映出５９０００～２１０００ａＢ．Ｐ．期间研究区可与Ｈｅｉｎｒｉｃｈ和Ｄａｎｓｇａａｒｄ／Ｏｅｓｃｈｇｅｒ事件遥相对比的气候演化特征。有关的全球热传输机制有待深入探讨。
The semi-oceanic sedimentary records of the remote source areas of the northern Indian Ocean in Bengal contain large amounts of high-frequency climatic fluctuations in the early and third phases of oxygen isotopes. Since the third period, the column of MD77190 in this area consisted of two types of sediments, mainly calcareous calcareous biomass shells and calcareous calcareous biological shells, which formed the interplay of rhythms, their distribution status, frequency of exchange, Subtle changes in chemical composition reflect 59000 ~ 21000aB. P. During the study period, the climate evolution characteristics of the study area can be remotely compared with the Heinrich and Dansgaard / Oeschger events. The relevant global heat transfer mechanism needs further study.