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A broadband crustal Lg wave attenuation model in Northeast China and the Korean Peninsula
Zhao, LF (Zhao LianFeng)1,2; Xie, XB (Xie XiaoBi)3; Wang, WM (Wang WeiMin)4; Yao, ZX (Yao ZhenXing)1,2
Source PublicationCHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
2018-03-01
Volume61Issue:3Pages:856-871
DOI10.6038/cjg2018L0394
Abstract

Lg wave propagation characteristics are investigated in Northeast China and the Korean Peninsula based on seismograms from 113 crustal earthquakes that were recorded at 602 regional stations distributed throughout eastern China, South Korea, and southern Japan. Based on 22,551 vertical component waveforms, we calculate the amplitude spectra of the Lg waves, extract the single station, two-station, and two-event data, and construct a broadband Lg attenuation model between 0.05 and 10.0 Hz in Northeast China and the Korean Peninsula by using a joint tomographic method to simultaneously obtain Q, source function, and site response. Results show that the sedimentary basin areas are characterized by relatively strong Lg attenuation, whereas the volcanic mountains such as Da Hinggan Ling and Changbai mountains attenuate the Lg waves weakly. The strongest Lg attenuation regions are areas covered by sea water including Bohai Sea, Yellow Sea and Japan Sea. A thinner crust within a typical oceanic lithosphere for the Japan Sea blocks the Lg wave propagation, resulting in no signals can be observed across oceanic path from small earthquakes. We collect observations from large earthquakes with magnitude around m(b) 6.0 to obtain strong Lg attenuation within the crust of Japan Sea.

Subject Area地质学
WOS IDWOS:000428609900005
Language英语
Indexed BySCIE
KeywordUnited-states Earthquakes Underground Nuclear Test Regional Seismic Phases Eastern Tibetan Plateau High-precision Location Middle-east Propagation Characteristics q Tomography Velocity Structure Lateral Variations
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
Cooperation Status国际
ISSN0001-5733
Department大陆碰撞与高原隆升重点实验室
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8708
Collection图书馆
Corresponding AuthorZhao, LF (Zhao LianFeng)
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China;
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China;
3.Univ Calif Santa Cruz, Inst Geophys & Planetary Phys, Santa Cruz, CA 95064 USA;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Continental Collis & Plateau Uplift, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Zhao, LF ,Xie, XB ,Wang, WM ,et al. A broadband crustal Lg wave attenuation model in Northeast China and the Korean Peninsula[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2018,61(3):856-871.
APA Zhao, LF ,Xie, XB ,Wang, WM ,&Yao, ZX .(2018).A broadband crustal Lg wave attenuation model in Northeast China and the Korean Peninsula.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,61(3),856-871.
MLA Zhao, LF ,et al."A broadband crustal Lg wave attenuation model in Northeast China and the Korean Peninsula".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 61.3(2018):856-871.
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