Forward modeling of spark gun array source wavefield based on multi-grid

MAO Shibo; SONG Peng; LI Xishuang; TAN Jun; XIE Chuang; WANG Shaowen; WANG Qianqian; DU Guoning

doi:10.16028/j.1009-2722.2021.188

2022 Vol. 38, No. 3

Article Contents

Article navigation > Marine Geology Frontiers > 2022 > 38(3): 52-58

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MAO Shibo, SONG Peng, LI Xishuang, TAN Jun, XIE Chuang, WANG Shaowen, WANG Qianqian, DU Guoning. Forward modeling of spark gun array source wavefield based on multi-grid[J]. Marine Geology Frontiers, 2022, 38(3): 52-58. doi: 10.16028/j.1009-2722.2021.188

Citation:

MAO Shibo, SONG Peng, LI Xishuang, TAN Jun, XIE Chuang, WANG Shaowen, WANG Qianqian, DU Guoning. Forward modeling of spark gun array source wavefield based on multi-grid[J]. Marine Geology Frontiers, 2022, 38(3): 52-58. doi: 10.16028/j.1009-2722.2021.188

Forward modeling of spark gun array source wavefield based on multi-grid

1.
College of Marine Geo-sciences, Ocean University of China, Qingdao 266100, China
2.
Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266100, China
3.
Key Laboratory of Submarine Geosciences and Prospecting Techniques of Ministry of Education, Ocean University of China, Qingdao 266100, China
4.
First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China

More Information

Corresponding author: SONG Peng, pengs@ouc.edu.cn

Received Date: 15 July 2021

Publish Date: 28 March 2022

Abstract

Abstract

Ultra-high resolution seismic exploration based on sparker has become more important with time in marine regional geological survey and engineering geophysical exploration in China. In practical performance, the distance between sparkers is usually in a scale of centimeter, and thus it is difficult to carry out numerical simulation for spark gun array. To solve this problem, based on the conventional variable grid finite difference algorithm, this paper proposed a multi-grid strategy in the numerical modeling of spark gun array, and realized the high-precision 3D numerical modeling of the spark gun array based on the multi-grid algorithm. Numerical simulation experiments show that comparing to conventional staggered-grid finite difference numerical simulation, the multi-grid finite difference numerical simulation algorithm can significantly improve the computational efficiency and reduce the memory consumption. At the same time, it can effectively suppress the false reflection in the conventional variable grid algorithm, and realize the high-precision numerical simulation of the spark gun array.
- ultra-high resolution /
- spark gun array /
- multi-grid /
- forward modeling

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