High QScS beneath the Ontong Java Plateau

• Material Type: 記事
• Title: High QScS beneath the Ontong Java Plateau
• Author/Editor: Daisuke Suetsugu; Hajime Shiobara; Hiroko Sugioka
• Publication, Distribution, etc.: 日本 : Springer Nature
• Publication Date: 2019-09-06
• Publication Date (W3CDTF): 2019-09-06
• Periodical title: EPS : Earth, Planets and Space
• No. or year of volume/issue: 71(97)
• Volume: 71(97)
• ISSN (Periodical Title): 1880-5981
• ISSN-L (Periodical Title): 1343-8832
• Text Language Code: eng
• DOI: 10.1186/s40623-019-1077-8; https://doi.org/10.1186/s40623-019-1077-8
• Persistent ID (NDL): info:ndljp/pid/11377522; https://dl.ndl.go.jp/pid/11377522
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• Date Accepted (W3CDTF): 2019-10-28T20:45:15+09:00
• Date Captured (W3CDTF): 2019-10-28
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• Summary, etc.: The Ontong Java Plateau (OJP) in the southwest Pacific is the largest oceanic large igneous provinces (LIP) on Earth. Detailed seismic structure of the plateau has not been understood well because of sparse seismic stations. We investigated seismic attenuation of the mantle beneath the plateau by analyzing data from temporary seismic stations on the seafloor and islands in and around the plateau. We analyzed the spectra of multiple ScS waves to determine the average attenuation of the mantle (Q(ScS)) beneath the plateau. We estimated the average Q(ScS) values for the paths with bounce points located in the plateau to be 309, which is significantly higher than the average (i.e., weaker attenuation than average) estimated in the western Pacific and is close to that of stable continents. We obtained positive residuals of 6 s for travel times of multiple ScS waves, which indicate that the average S velocity in the entire mantle beneath the OJP is low. While the positive residuals are at least partially attributable to the Pacific Large Low Shear Velocity Province (Pacific LLSVP), it is difficult to conclude whether low-velocity anomalies are required in the OJP upper mantle to explain the residuals from the multiple ScS analysis.
• DOI: 10.1186/s40623-019-1077-8; https://doi.org/10.1186/s40623-019-1077-8
• Access Restrictions: インターネット公開
• Rights (production): © The Author(s) 2019.; This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
• Related Material (URI): https://hdl.handle.net/20.500.14094/90006393; http://id.ndl.go.jp/digimeta/11377522; https://dl.ndl.go.jp/pid/11377522; http://link.springer.com/content/pdf/10.1186/s40623-019-1077-8.pdf; http://link.springer.com/article/10.1186/s40623-019-1077-8/fulltext.html
• Is Referenced By: Interrelation of the stagnant slab, Ontong Java Plateau, and intraplate volcanism as inferred from seismic tomography; https://cir.nii.ac.jp/crid/1050575520348931968; Seismic evidence for a thermochemical mantle plume underplating the lithosphere of the Ontong Java Plateau; https://cir.nii.ac.jp/crid/1050575520348979456; Nature of mantle discontinuities beneath the Ontong Java Plateau; https://cir.nii.ac.jp/crid/1360017280630188800; 日本の広帯域海底地震学; https://cir.nii.ac.jp/crid/1390285300179409792; 超オントンジャワ仮説の検証; https://cir.nii.ac.jp/crid/1390289475879746304
• References: S40RTS: a degree-40 shear-velocity model for the mantle from new Rayleigh wave dispersion, teleseismic traveltime and normal-mode splitting function measurements; https://cir.nii.ac.jp/crid/1360011142933043840; Structure and Dynamics of Earth's Lower Mantle; https://cir.nii.ac.jp/crid/1360011142939736832; Traveltimes for global earthquake location and phase identification; https://cir.nii.ac.jp/crid/1360011144822481664; Rayleigh–wave tomography of the Ontong–Java Plateau; https://cir.nii.ac.jp/crid/1360011146216395392; Global lateral variations of shear wave attenuation in the upper mantle; https://cir.nii.ac.jp/crid/1360292619051414656; Broadband Ocean-Bottom Seismology; https://cir.nii.ac.jp/crid/1360567186250366336; Preliminary reference Earth model; https://cir.nii.ac.jp/crid/1360574092885172608; Inferring global upper-mantle shear attenuation structure by waveform tomography using the spectral element method; https://cir.nii.ac.jp/crid/1360574094392924544; The effect of the crust on the estimation of mantle<i>Q</i>from spectral ratios of multiple<i>ScS</i>phases; https://cir.nii.ac.jp/crid/1360576123215764864; A radial model of anelasticity consistent with long-period surface-wave attenuation; https://cir.nii.ac.jp/crid/1360579816407741824; Evidence for a rheologically strong chemical mantle root beneath the Ontong–Java Plateau; https://cir.nii.ac.jp/crid/1360855569266377728; Elastic and anelastic structure of the lowermost mantle beneath the Western Pacific from waveform inversion; https://cir.nii.ac.jp/crid/1360855570729150848; Attenuation of multiple ScS waves beneath the Japanese Arc; https://cir.nii.ac.jp/crid/1360855571260328448; Attenuation of multiple ScS in various parts of the world; https://cir.nii.ac.jp/crid/1361137044143788160; Regional variation of attenuation and travel time in China from analysis of multple‐<i>ScS</i> phases; https://cir.nii.ac.jp/crid/1361418520509965568; The effect of subducting slabs in global shear wave tomography; https://cir.nii.ac.jp/crid/1361418521118645760; Estimation of the attenuation operator for multiple ScS waves; https://cir.nii.ac.jp/crid/1361699994082982656; The <i>Q</i> structure of the upper mantle: Constraints from Rayleigh wave amplitudes; https://cir.nii.ac.jp/crid/1361699994875810816; Deep Earth Structure: Q of the Earth from Crust to Core; https://cir.nii.ac.jp/crid/1361699995790721408; A Low Q_ScS Anomaly Near the South Pacific Superswell; https://cir.nii.ac.jp/crid/1361699996032599552; The global attenuation structure of the upper mantle; https://cir.nii.ac.jp/crid/1361981471069981568; Finite-frequency sensitivity kernels for global seismic wave propagation based upon adjoint methods; https://cir.nii.ac.jp/crid/1362825894348609792; Multiple-ScS probing of the Ontong-Java Plateau; https://cir.nii.ac.jp/crid/1363107368385305088; Mantle layering from <i>ScS</i> reverberations: 1. Waveform inversion of zeroth‐order reverberations; https://cir.nii.ac.jp/crid/1363107369964451968; Mapping lateral variations in upper mantle attenuation by stacking <i>P</i> and <i>PP</i> spectra; https://cir.nii.ac.jp/crid/1363670320233456384; Large igneous provinces: Crustal structure, dimensions, and external consequences; https://cir.nii.ac.jp/crid/1363951795095534336; The Ontong Java Plateau; https://cir.nii.ac.jp/crid/1364233269304906112; Seismic wave speed structure of the Ontong Java Plateau; https://cir.nii.ac.jp/crid/1364233270745695744; The OJP array: seismological and electromagnetic observation on seafloor and islands in the Ontong Java Plateau; https://cir.nii.ac.jp/crid/1390001205317465600
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• Bibliographic ID (NDL): 11377522; http://id.ndl.go.jp/bib/11377522
• NAID: 120006733131