地震地磁观测与研究2025，Vol.46Issue(5)：51-56,6.DOI:10.3969/j.issn.1003-3246.2025.05.007
贵州六盘水区域威宁—水城断裂地球物理场特征分析
Analysis of geophysical field characteristics of the Weining-Shuicheng fault in Liupanshui area,Guizhou Province
摘要
Abstract
In order to systematically investigate the geological and geophysical characteristics of the Liupanshui area in Guizhou Province,we analyzes the gravity anomalies,aeromagnetic anomalies and lithospheric structure and structure in the Liupanshui area through geophysical detection methods,and conducts geophysical characteristic analysis of the Weining-Shuicheng fault in the region.The research results show that the Weining-Shuicheng fault area is located at the intersection of the Xianshuihe-Eastern Yunnan seismic belt,the Youjiang seismic belt and the middle Yangtze River seismic belt.The activities of the involved seismic belts have obvious alternating phenomena of quiescence and activation.Besides being affected by the local seismic activities,it is also influenced by the seismic activities of the seismic belts in the adjacent areas.The crustal thickness in the Liupanshui area increases from east to west,with a slightly steep variation pattern.This kind of change is very likely related to the gravity cascade belt extending southward from the Helan Mountains to Guizhou,which is a reflection of the deep structure of the gravity cascade belt.The regional differences in aeromagnetism in the northeastern part of Liupanshui are mainly caused by the Weining-Shuicheng fault,while the high-value aeromagnetic anomalies in the left-central part of the area are likely controlled by other faults.关键词
威宁—水城断裂/地球物理特征/活动性Key words
Weining-Shuicheng fault/geophysical characteristics/seismic activity引用本文复制引用
邱鹏,王家海..贵州六盘水区域威宁—水城断裂地球物理场特征分析[J].地震地磁观测与研究,2025,46(5):51-56,6.基金项目
《地震地质与活断层探测创新团队》贵州省地震局地震科技基金项目(项目编号:202103) （项目编号:202103）
