受欧亚板块与印度板块碰撞影响，青藏高原东南部多发地震灾害，对历史时期地震灾害尤其是湖泊沉积物中保存的连续地震事件序列开展系统研究，探讨地震发生时间规律，对地震的中长期预警具有重要意义。本项目以青藏高原东南部巴松措为研究对象，采集沉积物岩芯并利用纹层计年、210Pb/137Cs测年及AMS 14C测年方法建立沉积物的年代序列。利用沉积物浅层地震剖面分析、沉积物短岩芯高分辨率的XRF元素扫描及沉积学指标分析（粒度、磁化率、有机碳含量、矿物组成和孢粉组成）结果，探讨巴松措沉积物中保存的地震事件（如1950年墨脱-察隅地震）沉积学特征。在此基础上，利用巴松措沉积物长岩芯高分辨率沉积学指标分析结果建立该地区晚全新世阶段地震事件序列，弥补区域历史地震资料的空缺；探讨地震事件发生的时间规律，为藏东南地区地震灾害的中长期预警提供科学参考；对比区域内高分辨率记录，揭示地震事件对区域环境演化及人类活动的影响。

Influenced by the collision between Eurasian Plate and Indian Plate, the southeastern Tibetan Plateau has been suffered from serious seismic events. Investigation of historical seismic events especially those continuously preserved in lacustrine sediments is essentially important for long term prediction of seismic hazards. We choose Lake Basom Tso in the southeastern Tibetan Plateau as our study area, on the eastern edge of the Himalaya Frontal Thrust. Underwater sediment cores will be collected, while varve counting, 210Pb/137Cs and AMS 14C dating results will be employed to establish the age model for the sediment sequence. Results from field seismic stratigraphy investigation, high resolution XRF-scanning and sedimentary proxies (i.e. grain size, magnetic susceptibility, total organic carbon content, mineral composition and pollen assemblage) from short sediment cores will be used to infer the sedimentary characters of known seismic event (e.g. Motuo-Zayu 1950 A.D. Earthquake) preserved in the sediments from Lake Basom Tso. Accordingly, late Holocene seismic events record will be investigated based on high resolution sedimentological analyses of long sediment cores recovered from Lake Basom Tso. Subsequently, the examination of potential temporal patterns about the seismic events, especially the recurrence time, would provide significant knowledge for the prediction and protection of regional seismic hazards. In addition, comparison with regional high-resolution sequences particularly human activity related records would lead to results about the potential influences of seismic event on regional environmental changes as well as human activities.