自然资源学报 ›› 1989, Vol. 4 ›› Issue (3): 228-233.doi: 10.11849/zrzyxb.1989.03.006

• 论文 • 上一篇    下一篇

喀喇昆仑—昆仑山脉北侧的深部构造

束沛镒, 梁尚鸿, 张立敏   

  1. 中国科学院地球物理所
  • 出版日期:1989-09-25 发布日期:1989-09-25

THE DEEP STRUCTURE OF THE NORTHERN PART OF THE KARAKORAM AND KUNLUN MOUNTAINS

Shu Peiyi, Liang Shanghong, Zhang Liming   

  1. Institute of Geophysics, Chinese Academy of Sciences
  • Online:1989-09-25 Published:1989-09-25

摘要: 本文就和田地震台所接受的5张深源远震体波观测图波形的理论计算拟合讨论塔里木盆地的西南边缘、昆仑山脉北麓的深部地壳结构,在30km以下存在一高速夹层,地壳厚度约53km左右,由于透射地震射线来自不同方向,显示了速度结构的小差异,表明存在横向的变化。

关键词: 深源远震, 波形拟合, 深部构造, 高速夹层

Abstract: The observed .data used in this paper .are five deep and teleseismic P waveforms recorded by short period seismograph at the Hetian seismic station. Based on comparing the synthetic ones waveforms with the observed, the deep crust structure of the southwestern edge of the Tarim basin and of the. northern part of the Kunlun mountains is discussed. Results show that beneath about 30 km are higher velocity layer. The crustal depth is about 53 km. Since the transmission seismic beams came from different directions, the calculation indicates small differences of velocity structure and lateral variance.

Key words: deep teleseismic earthquake, waveform modeling, deep structure, higher velocity layer