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Relation of crustal and upper mantle deformation beneath Sunda-Banda Island Arc inferred from shear-wave splitting analysis
Syuhada S.a, Puspito N.T.b, Anggono T.a, Hananto N.D.a, Grandis H.b, Yudistira T.b
a Research Centre for Physics – Indonesian Institute of Sciences (LIPI), Kawasan Puspiptek Tangerang Selatan, Banten, 15314, Indonesia
b Faculty of Earth Sciences and Technology, Institut Teknologi Bandung (ITB), Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 Published under licence by IOP Publishing Ltd.We study the possible correlation of deformation in the crust and upper mantle beneath Sunda-Banda Island Arc using shear wave splitting analysis. The study area is very complex and located in the region where there is a transition in tectonic setting from subduction to collision. In this study, we measure the upper mantle splitting parameters from local events recorded at 6 broadband stations. The fast directions of the upper mantle splitting results are then compared with the orientation of fast waves previously obtained in the crust. Thus, this complex tectonic setting is expected to provide correlation of deformation pattern in the crust and upper mantle derived from the splitting results. The results show that the upper mantle fast orientations are generally parallel to the crustal splitting pattern. This finding suggests that this pattern could be caused the preferential alignment of anisotropic mineral inside the medium vertically localized in thin channel underneath the volcanic islands, or fracture zone fabrics related to the change of tectonic regime from subduction to collision, which involves high stresses and strains in the plate boundary.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Broadband station,Deformation pattern,Fracture zone,Plate boundaries,Shear wave splitting,Splitting patterns,Tectonic settings,Volcanic islands[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1088/1742-6596/1204/1/012069[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]