BUILDING OF NEAR SURFACE VELOCITY MODEL USING TOMOGRAPHY INVERSION METHOD

CHEN Yunfeng; YANG Shuqing

2014 Vol. 30, No. 5

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CHEN Yunfeng, YANG Shuqing. BUILDING OF NEAR SURFACE VELOCITY MODEL USING TOMOGRAPHY INVERSION METHOD[J]. Marine Geology Frontiers, 2014, 30(5): 47-51.

Citation:

CHEN Yunfeng, YANG Shuqing. BUILDING OF NEAR SURFACE VELOCITY MODEL USING TOMOGRAPHY INVERSION METHOD[J]. Marine Geology Frontiers, 2014, 30(5): 47-51.

BUILDING OF NEAR SURFACE VELOCITY MODEL USING TOMOGRAPHY INVERSION METHOD

Geophysical Research Institute of Shengli Oilfield Ltd. Co., Dongying 257022, Shandong, China

Received Date: 20 February 2014

Abstract

Abstract

Because of the tough surface condition and the variable near-surface velocity,the inversion of the near-surface velocity model has become a great difficult problem. The method of tomography provides an effective tool for the inversion of the near-surface velocity model. It can simulate horizontal and vertical variable velocity medium and make use of various first arrival traveltimes at the same time. In this paper we first introduced the algorithm of raytracing tomography. Then, we finished the inversion of the near-surface velocity model of seismic exploration area using this method. The final inversion result was satisfactory.
- near surface /
- velocity model /
- tomography