粒子群算法在多种数据联合反演断层三维滑动速率的应用研究
Application of Particle Swarm Optimization Algorithm in 3D Fault Slip Velocity Inversion based on Multi-data
刘杰 1王宏宇 2山锋3
作者信息
- 1. 西安培华学院, 陕西 西安 710125
- 2. 国家测绘地理信息局第一大地测量队, 陕西 西安 710000
- 3. 陕西交通职业技术学院, 陕西 西安 710000
- 折叠
摘要
建立多种大地测量数据联合反演的数学模型.利用青藏高原东北缘地区的GPS、水准、重力三种观测数据,结合附有LDW策略的惯性权重的粒子群算法,反演龙首山断裂的三维滑动速率.结果表明:龙首山断裂主要以右旋、逆冲为主,兼具挤压趋势,且具有空间分布不均匀性的特征.相比单一数据的反演结果,多种数据联合反演更具稳定性和规律性.
Abstract
Mathematical model for joint inversion of various geodetic data is established.Using the three observation data of GPS,leveling,and gravity in the northeastern margin of the Qinghai-Tibet Plateau,combined with the inertial weighted particle swarm algorithm with LDW strategy,we inverted the 3D slip rate of the Longshoushan fault.The results show that the Longshoushan fault is mainly right-handed and thrust,and has a tendency of extrusion.The fault activity has the characteristics of uneven spatial distribution.
关键词
位错模型/粒子群算法/联合反演/三维滑动速率/龙首山断裂Key words
dislocation model/particle swarm optimization/joint inversion/three-dimension slip velocity/Longshoushan fault引用本文复制引用
基金项目
陕西省教育厅一般专项科研计划(2021)(SJS2023YB083)
出版年
2024