The Improved Simulated Annealing Algorithm and Application in the Surface Wave Dispersion Inversion

ZHANG Xuemei; YANG Zhigao; SHI Haixia; DU Guangbao; YANG Wen; WEI Xing; HAN Yanyan; LI Fei; HUANG Zhibin; LIU Jie

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The Improved Simulated Annealing Algorithm and Application in the Surface Wave Dispersion Inversion

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The velocity distribution of layers from surface wave dispersion curve is a severely nonlinear program. Base on the Metropolis rule,we improved the simulated annealing algorithm to simultaneously inverse the velocities and thicknesses using the dispersion data and identified the Moho and the bottom of lithosphere. The application to the numerical examples with 5% noise shows the velocity RMS is 1. 56% between the non-linear results and the original models when the condition of selecting method for temperature parameters and initial temperature are satisfied. Using the pure dispersions of Rayleigh wave,the nonlinear inversion has been carried out for S-wave velocities and thicknesses of the vertical profile crossing the Indian Plate,the Qinghai-Tibetan Plateau,and the Tarim Basin. It indicated that the crustal thickness is about 70 km in the Qiangtang block,while in the hinterland of the Qinghai-Tibetan Plateau the lithosphere is relatively thin(~ 130 km)from the velocity values and their offsets.

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来源
《地震研究进展（英文）》 |2019年第3期|391-402|共12页
作者
ZHANG Xuemei; YANG Zhigao; SHI Haixia; DU Guangbao; YANG Wen; WEI Xing; HAN Yanyan; LI Fei; HUANG Zhibin; LIU Jie;
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作者单位

China Earthquake Networks Center;

Beijing 100045;

China;

Institute of Geophysics;

China Earthquake Administration;

Beijing 100081;

China;

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原文格式 PDF
正文语种 chi
中图分类大地（岩石界）物理学（固体地球物理学）;
关键词
Simulated; annealing; algorithm; Simultaneous; inversion; Dispersion; curve; Reconstruction; of; velocity; model;

The Improved Simulated Annealing Algorithm and Application in the Surface Wave Dispersion Inversion

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