大气负荷对兰新铁路线区域地壳形变及重力变化的影响  

The Influence of Atmospheric Load on the Crust and Gravity Changes in the Lanxin Railway Area

作　　者：张波 杨国林 孙学先 刘涛 安旭伟 ZHANG Bo;YANG Guolin;SUN Xuexian;LIU Tao;AN Xuwei(Faculty of Geomatics,Lanzhou Jiaotong University,118 West-Anning Road,Lanzhou 730070,China;National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring,118 West-Anning Road,Lanzhou 730070,China;Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,118 West-Anning Road,Lanzhou 730070,China)

机构地区：[1]兰州交通大学测绘与地理信息学院,兰州市730070 [2]地理国情监测技术应用国家地方联合工程研究中心,兰州市730070 [3]甘肃省地理国情监测工程实验室,兰州市730070

出　　处：《大地测量与地球动力学》2021年第5期497-500,共4页Journal of Geodesy and Geodynamics

基　　金：国家重点研发计划(2016YFC0803106);国家自然科学基金(41764001,41761088);兰州交通大学优秀平台支持项目(201806);兰州交通大学天佑创新团队(TY202001)。

摘　　要：使用兰新铁路线周边区域2012~2017年的全球大气模型和区域气象站气压数据,根据大气负荷理论,采用移去-恢复法计算该区域在6 a间大气负荷对地壳形变和重力变化的影响。结果显示,大气负荷对兰新线区域的垂直形变影响为1 cm左右,对水平形变影响小于2 mm,对垂线偏差影响约为6 ms,对地面重力影响大致为6μGal;大气负荷对地壳形变和地面重力的影响总体呈现出年周期性和季节性变化。Using the removal-recovery method,the global atmospheric model and the pressure data of regional weather stations in the area around the Lanxin railway from 2012 to 2017,we calculate the influence of atmospheric load on the crustal deformation and gravity change in the 6 year period according to the atmospheric load theory.The results show that atmospheric load has an impact of about 1 cm on the vertical deformation of the Lanxin railway area,and less than 2 mm on the horizontal deformation.The impact on the vertical deviation is roughly 6 ms;on the ground gravity,the impact is roughly 6μGal.The influence of atmospheric load on crustal deformation and ground gravity shows annual periodic and seasonal changes.

关 键 词：大气负荷 移去-恢复法 地壳形变 地面重力 

分 类 号：P223[天文地球—大地测量学与测量工程] P313[天文地球—测绘科学与技术]