科学研究

国际与国内交流

刘云鹤:3D inversion of geophysical electromagnetic data using unstructured tetrahedron grid

时间:2019/04/25浏览:13

报告时间2019426日(星期五)15:00

报告地点纬地楼515

报告人刘云鹤 副教授

工作单位吉林大学地球探测科学与技术学院

举办单位土木与水利工程学院

报告人简介

刘云鹤,男,辽宁鞍山人,吉林大学地球探测科学与技术学院副教授。2001年考入吉林大学地球探测科学与技术学院应用地球物理系,2008年取得硕士学位,2011年获得地球探测与信息技术博士学位。2011-2013年在吉林大学地球物理学博士后流动站工作,出站后留校任教至今。2016-2017Memorial University of Newfoundland交流访问一年。长期从事电磁法勘探理论、三维电磁法正反演方法、电磁各向异性等方面的科学研究及教学工作。主持和参与国家自然基金、863重大项目、国家重点研发计划、国家重大科研装备研制项目等纵向课题十余项、横向课题二十余项。获得第七届刘光鼎地球物理青年科技奖。发表学术论文59篇,其中SCI收录46篇,EI收录5篇。

报告简介

we develop a new modularized 3D inversion code for different kinds of geophysical electromagnetic (EM) data, including MT impedance, frequency- and time-domain CSEM data, etc. In this new inversion code, the model is discretized by unstructured grid to well fit the topography. The edge-based finite-element method is adopted to calculate EM response in both frequency- and time-domain. Different inversion algorithms, such as NLCG, BFGS and GN, are implemented as options for different EM exploration methods. The code has been tested on both synthetic time-domain and frequency-domain EM data inversion. The inversion results show that although the data are seriously affected by topography, this new code can well recover the model, thus it has potential for practical application in the future.




友情链接/ Links
合肥工业大学土木与水利工程学院@版权所有