IGGCAS OpenIR  > 地球与行星物理院重点实验室
Lateral variations in crustal Lg attenuation in and around the Hangay Dome, Mongolia
Zhang, Lei1,2; Zhao, Lian-Feng1,3; Xie, Xiao-Bi4; Wu, Qing-Ju5; Yao, Zhen-Xing1
2022-01-20
Source PublicationINTERNATIONAL JOURNAL OF EARTH SCIENCES
ISSN1437-3254
Pages16
AbstractThe Hangay Dome in central Mongolia, a typical intraplate plateau far from plate boundaries, is characterized by rapid uplift and widespread volcanic activities in the Cenozoic. However, thermodynamics process for the landform in Cenozoic remains mysterious. Seismic Lg-wave, which is sensitive to crustal thermal status, can provide constraints on the crustal attenuation structure; thus, may be helpful to understand the thermodynamics. In this study, we estimate the Lg-wave quality factor Q(Lg) across the Hangay Dome and its surroundings from 231 crustal earthquakes recorded by 136 regional broadband seismic stations distributed throughout north China and Mongolia. Using a joint tomographic method, we construct a broadband Lg attenuation model at 58 discrete frequencies distributed evenly in log scale between 0.1 and 20.0 Hz. The obtained Q(Lg) model provides new insights into crustal attenuation in the region. The strong Lg wave attenuation observed in the northeastern Hangay Dome and western Gobi-Altai, associated with crust low-resistivity anomalies, low S-wave velocity region, heat flow and volcanic activities, suggest the existence of possible partial melting due to asthenospheric upwelling. The widespread moderately-low Q(Lg) values around the perimeter of the Hangay Dome imply that the margin of the Hangay Dome has been weakened. The center part of the uplift is a small high Q(Lg) nucleus, which is possibly the residue of the Precambrian basement. The above observations suggest that the Hangay Dome is lifted by small-scale asthenospheric upwellings. During this process, the very hot mantle materials strongly modified the Hangar Dome and also caused the Cenozoic volcanism and major earthquakes.
KeywordHangay Dome in central Mongolia Seismic Lg-wave Seismic attenuation Crustal thermal structures
DOI10.1007/s00531-021-02131-8
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordREGIONAL SEISMIC PHASES ; NUCLEAR-EXPLOSIONS ; WAVE ATTENUATION ; UNITED-STATES ; UPPER-MANTLE ; TOMOGRAPHY ; PLATEAU ; BENEATH ; MAGNITUDES ; RESOLUTION
Language英语
Funding ProjectNational Key Research and Development Program of China[2017YFC0601206] ; National Natural Science Foundation of China[41974061] ; National Natural Science Foundation of China[41974054] ; National Natural Science Foundation of China[41630210] ; National Natural Science Foundation of China[41674060]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000745805800001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/103991
Collection地球与行星物理院重点实验室
Corresponding AuthorZhao, Lian-Feng
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Heilongjiang Mohe Observ Geophys, Beijing, Peoples R China
4.Univ Calif Santa Cruz, Inst Geophys & Planetary Phys, Santa Cruz, CA 95064 USA
5.China Earthquake Adm, Inst Geophys, Beijing, Peoples R China
First Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Earth and Planetary Physics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhang, Lei,Zhao, Lian-Feng,Xie, Xiao-Bi,et al. Lateral variations in crustal Lg attenuation in and around the Hangay Dome, Mongolia[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2022:16.
APA Zhang, Lei,Zhao, Lian-Feng,Xie, Xiao-Bi,Wu, Qing-Ju,&Yao, Zhen-Xing.(2022).Lateral variations in crustal Lg attenuation in and around the Hangay Dome, Mongolia.INTERNATIONAL JOURNAL OF EARTH SCIENCES,16.
MLA Zhang, Lei,et al."Lateral variations in crustal Lg attenuation in and around the Hangay Dome, Mongolia".INTERNATIONAL JOURNAL OF EARTH SCIENCES (2022):16.
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