可可西里关键区深地震反射剖面285 km数据（2019-2021）

围绕任务书要求，2019年-2021年泵项目完成深地震反射剖面探测285km，项目组对数据进行了处理，获得了叠加剖面，揭示了可可西里地区地壳的精细结构。这是项目组冬季施工，克服苦难，首次在可可西里无人区获得的高分辨率的深地震反射剖面，成像的结果显示剖面浅、中、深层波组信息丰富，从深部结构上回答金沙江缝合带的俯冲极性、藏北高原巨厚地壳的形成机制，为高原生态屏障的形成机理，以及欧亚板块是否南向俯冲于青藏高原之下的科学问题.

In accordance with the requirements of the task statement, the Pump Project completed 285 km of deep seismic reflection profile surveys between 2019 and 2021. The project team processed the acquired data and obtained stacked profiles, which reveal the fine-scale crustal structure of the Hoh Xil region. This is the first high-resolution deep seismic reflection profile acquired by the project team in the uninhabited Hoh Xil region after overcoming various difficulties during winter construction. The imaging results show that the profile contains abundant seismic wave group information in its shallow, intermediate and deep layers. These findings address key scientific questions including the subduction polarity of the Jinsha River Suture Zone based on deep crustal structures, the formation mechanism of the extremely thick crust in the Northern Tibetan Plateau, the formation mechanism of the plateau ecological barrier, and whether the Eurasian Plate subducted southward beneath the Tibetan Plateau.

搜集汇总

背景与挑战

背景概述

该数据集包含2019-2021年在可可西里关键区采集的深地震反射剖面数据，总长285公里，空间分辨率为10-100米，是首次在该无人区获得的高分辨率数据。数据揭示了地壳精细结构，用于研究金沙江缝合带俯冲极性和藏北高原巨厚地壳形成机制等地球动力学问题。