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Variations in oceanic plate bending along the Mariana trench
Zhang, F; Lin, J; Zhan, WH; jlin@whoi.edu
2014
发表期刊EARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
卷号401页码:206-214
摘要We quantify along-trench variations in plate flexural bending along the Mariana trench in the western Pacific Ocean. A 3-D interpreted flexural deformation surface of the subducting Pacific Plate was obtained by removing from the observed bathymetry the effects of sediment loading, isostatically-compensated topography based on gravity modeling, age-related lithospheric thermal subsidence, and residual short-wavelength features. We analyzed flexural bending of 75 across-trench profile sections and calculated five best-fitting tectonic and plate parameters that control the flexural bending. Results of analysis revealed significant along-trench variations: the trench relief varies from 0.9 to 5.7 km, trench-axis vertical loading (-V-0) from (0).73 x 10(12) to 3.17 x 10(12) N/m, and axial bending moment (-M-0) from 0.1 x 10(17) to 2.7 x 10(17) N. The effective elastic plate thickness seaward of the outer-rise region (T-e(M)) ranges from 45 to 52 km, while that trench-ward of the outer-rise (T-e(m)) ranges from 19 to 40 km. This corresponds to a reduction in T-e of 21-61%. The transition from T-e(M) to T-e(m) occurs at a breaking distance of 60-125 km from the trench axis, which is near the outer-rise and corresponds to the onset of observed pervasive normal faults. The Challenger Deep area is associated with the greatest trench relief and axial vertical loading, while areas with seamounts at the trench axis are often associated with more subtle trench relief, smaller axial vertical loading, and greater topographic bulge at the outer-rise. (C) 2014 Elsevier B.V. All rights reserved.
部门归属[Zhang, Fan ; Zhan, Wenhuan] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China ; [Zhang, Fan] Univ Chinese Acad Sci, Beijing 100041, Peoples R China ; [Zhang, Fan ; Lin, Jian] Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA ; [Lin, Jian] Tongji Univ, Sch Ocean & Earth Sci, Shanghai 200092, Peoples R China
关键词Mariana Trench Axial Vertical Force Axial Bending Moment Effective Elastic Thickness
学科领域Geochemistry & Geophysics
资助者US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311] ; US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311] ; US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311] ; US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311]
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收录类别sci
资助项目海洋地质
资助者US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311] ; US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311] ; US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311] ; US NSF [OCE-1141985]; Deerbrook Foundation; NSFC [41376063]; Joint NSF-China/Guangdong Natural Science Fund Committee [U0933006]; Chinese Scholarship Council [201204910311]
WOS记录号WOS:000341218600019
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10606
专题中科院边缘海地质重点实验室
通讯作者jlin@whoi.edu
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GB/T 7714
Zhang, F,Lin, J,Zhan, WH,et al. Variations in oceanic plate bending along the Mariana trench[J]. EARTH AND PLANETARY SCIENCE LETTERS,2014,401:206-214.
APA Zhang, F,Lin, J,Zhan, WH,&jlin@whoi.edu.(2014).Variations in oceanic plate bending along the Mariana trench.EARTH AND PLANETARY SCIENCE LETTERS,401,206-214.
MLA Zhang, F,et al."Variations in oceanic plate bending along the Mariana trench".EARTH AND PLANETARY SCIENCE LETTERS 401(2014):206-214.
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