2.5-D forward numerical simulation of ip method in time domain under the condition of undulate terrain
The 2.5 -D forward modeling of polarizability can be transformed into the numerical simulation of equivalent apparent resistivity by cole -cole model. The underground space is divided by parallelogram in order to simulate the terrain. Both of the finite element method and the boundaty element method are used in the 2.5 -D forward modeling of resistivity and polarizability in ridge and valley terrain in order to improve the accuracy of simulation. Compared with the results without terrain, the results here show that there is a greater impact on the numerical simulation of the resistivity, and the apparent resistivity quasi sectional drawings have a false anomaly in the place of the terrain undulated, while the curve shape of the apparent polarizability change not so much, only the amplitude and range of the curve changed above the anomaly. The more drastic changes in terrain, the greater the apparent resistivity and the apparent polarizability change.
2.5-D forward modeling undulat terrain time-domain IP cole-cole model finite element method boundaty element method
Yanbin Shi Shengye Zhang Yongliang Meng
Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan 430074,China Institute of Geophysics & Geomatics, China University of Geosciences,Wuhan 430074, China Institute of Geophysics & Geomatics, China University of Geosciences, Wuhan 430074, China
国际会议
成都
英文
544-549
2010-06-14（万方平台首次上网日期，不代表论文的发表时间）