An improved cylindrical surface fitting-related method for fault characterization

doi:10.1190/GEO2016-0036.1

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	An improved cylindrical surface fitting-related method for fault characterization
	Yu, Jingbo 1; Li, Zhong 1,2
刊名	GEOPHYSICS
	2017
卷号	82 期号:1 页码:O1-O10
ISSN号	0016-8033
DOI	10.1190/GEO2016-0036.1
文献子类	Article
英文摘要	On the basis of the similarity of seismic waveforms and shapes of the reflectors, the coherence and curvature attributes can be derived, respectively, to characterize faults. Coherence is effective for characterizing relatively large faults. When the distortion of seismic waveforms at a fault is not obvious, the curvature attribute may play a complementary role in detecting the fault. According to geometric features of the faulted strata, the rate of change of curvature has recently been developed to improve fault characterization. Through an application to the real seismic data from the western Tazhong area of the Tarim Basin, China, it was demonstrated that curvature change rate has advantages in detecting subtle faults having quite small throws and heaves. However, when the dip angle of a faulted stratum is smaller than 45 degrees, the curvature change rate derived from its fitted surface has multiple extreme values associated with one fault plane, which cause a low signal-to-noise ratio (S/N) of a computation result for the multiple extrema interfering with each other. To overcome this shortcoming, we first implement a rotation and stretching transformations of the seismic samples and then fit a cylindrical surface to the transformed samples. The curvature change rate of the directrix of the cylindrical surface is used to characterize faults. Through its application to 3D seismic data from the western Tazhong area in the Tarim Basin, the result indicates that in comparison with the previous curvature change rate, the new method significantly improves the S/N of the calculated result.
WOS关键词	SEISMIC DATA ; CURVATURE ; ALGORITHM ; DIP
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000396469700027
资助机构	National Natural Science Foundation of China(41372120) ; National Science and Technology Major Project of China(2011ZX05008-003) ; National Natural Science Foundation of China(41372120) ; National Science and Technology Major Project of China(2011ZX05008-003) ; National Natural Science Foundation of China(41372120) ; National Science and Technology Major Project of China(2011ZX05008-003) ; National Natural Science Foundation of China(41372120) ; National Science and Technology Major Project of China(2011ZX05008-003)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/53076]
专题	地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者	Yu, Jingbo
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Yu, Jingbo,Li, Zhong. An improved cylindrical surface fitting-related method for fault characterization[J]. GEOPHYSICS,2017,82(1):O1-O10.
APA	Yu, Jingbo,&Li, Zhong.(2017).An improved cylindrical surface fitting-related method for fault characterization.GEOPHYSICS,82(1),O1-O10.
MLA	Yu, Jingbo,et al."An improved cylindrical surface fitting-related method for fault characterization".GEOPHYSICS 82.1(2017):O1-O10.