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Restoration of clipped seismic waveforms using projection onto convex sets method
Zhang, Jinhai1; Hao, Jinlai1; Zhao, Xu1; Wang, Shuqin2; Zhao, Lianfeng1; Wang, Weimin3; Yao, Zhenxing1
2016-12-14
Source PublicationSCIENTIFIC REPORTS
Volume6Issue:39056Pages:1
SubtypeArticle
AbstractThe seismic waveforms would be clipped when the amplitude exceeds the upper-limit dynamic range of seismometer. Clipped waveforms are typically assumed not useful and seldom used in waveformbased research. Here, we assume the clipped components of the waveform share the same frequency content with the un-clipped components. We leverage this similarity to convert clipped waveforms to true waveforms by iteratively reconstructing the frequency spectrum using the projection onto convex sets method. Using artificially clipped data we find that statistically the restoration error is similar to 1% and similar to 5% when clipped at 70% and 40% peak amplitude, respectively. We verify our method using real data recorded at co-located seismometers that have different gain controls, one set to record large amplitudes on scale and the other set to record low amplitudes on scale. Using our restoration method we recover 87 out of 93 clipped broadband records from the 2013 Mw6.6 Lushan earthquake. Estimating that we recover 20 clipped waveforms for each M5.0+ earthquake, so for the similar to 1,500 M5.0+ events that occur each year we could restore similar to 30,000 clipped waveforms each year, which would greatly enhance useable waveform data archives. These restored waveform data would also improve the azimuthal station coverage and spatial footprint.
Department地球深部结构与过程研究室
WOS HeadingsScience & Technology
DOI10.1038/srep39056
Funding OrganizationNatural Science Foundation of China(41541033 ; Natural Science Foundation of China(41541033 ; National Major Project of China(2011ZX05008-006) ; National Major Project of China(2011ZX05008-006) ; Youth Innovation Promotion Association CAS(2012054) ; Youth Innovation Promotion Association CAS(2012054) ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; 41504046 ; 41504046 ; 41474036 ; 41474036 ; 41390455 ; 41390455 ; 41630210) ; 41630210) ; Natural Science Foundation of China(41541033 ; Natural Science Foundation of China(41541033 ; National Major Project of China(2011ZX05008-006) ; National Major Project of China(2011ZX05008-006) ; Youth Innovation Promotion Association CAS(2012054) ; Youth Innovation Promotion Association CAS(2012054) ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; 41504046 ; 41504046 ; 41474036 ; 41474036 ; 41390455 ; 41390455 ; 41630210) ; 41630210)
WOS KeywordEARTHS INNER-CORE ; EARTHQUAKE ; ALGORITHM ; BOUNDARY ; HISTORY ; MOTION ; FIELDS
Indexed BySCI
Language英语
Funding OrganizationNatural Science Foundation of China(41541033 ; Natural Science Foundation of China(41541033 ; National Major Project of China(2011ZX05008-006) ; National Major Project of China(2011ZX05008-006) ; Youth Innovation Promotion Association CAS(2012054) ; Youth Innovation Promotion Association CAS(2012054) ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; 41504046 ; 41504046 ; 41474036 ; 41474036 ; 41390455 ; 41390455 ; 41630210) ; 41630210) ; Natural Science Foundation of China(41541033 ; Natural Science Foundation of China(41541033 ; National Major Project of China(2011ZX05008-006) ; National Major Project of China(2011ZX05008-006) ; Youth Innovation Promotion Association CAS(2012054) ; Youth Innovation Promotion Association CAS(2012054) ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; Foundation for Excellent Member of the Youth Innovation Promotion Association ; 41504046 ; 41504046 ; 41474036 ; 41474036 ; 41390455 ; 41390455 ; 41630210) ; 41630210)
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000390239700001
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/11386
Collection地球深部结构与过程研究室
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.Minzu Univ China, Sch Informat Engn, Beijing 100081, Peoples R China
3.Chinese Acad, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jinhai,Hao, Jinlai,Zhao, Xu,et al. Restoration of clipped seismic waveforms using projection onto convex sets method[J]. SCIENTIFIC REPORTS,2016,6(39056):1.
APA Zhang, Jinhai.,Hao, Jinlai.,Zhao, Xu.,Wang, Shuqin.,Zhao, Lianfeng.,...&Yao, Zhenxing.(2016).Restoration of clipped seismic waveforms using projection onto convex sets method.SCIENTIFIC REPORTS,6(39056),1.
MLA Zhang, Jinhai,et al."Restoration of clipped seismic waveforms using projection onto convex sets method".SCIENTIFIC REPORTS 6.39056(2016):1.
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