Reconstruction of sediment-transport pathways on a modern microtidal coast by a new grain-size trend analysis method

• 資料種別: 記事
• タイトル: Reconstruction of sediment-transport pathways on a modern microtidal coast by a new grain-size trend analysis method
• 著者・編者: Shota Yamashita; Hajime Naruse; Takeshi Nakajo
• 出版事項: 日本 : Springer Nature
• 出版年月日等: 2018-02-01
• 出版年（W3CDTF）: 2018-02-01
• タイトル（掲載誌）: Progress in earth and planetary science
• 巻号年月日等（掲載誌）: 5(7)
• 掲載巻: 5(7)
• ISSN（掲載誌）: 2197-4284
• ISSN-L（掲載誌）: 2197-4284
• 本文の言語コード: eng
• DOI: 10.1186/s40645-018-0166-9; https://doi.org/10.1186/s40645-018-0166-9
• 国立国会図書館永続的識別子: info:ndljp/pid/11068296; https://dl.ndl.go.jp/pid/11068296
• コレクション（共通）: 障害者向け資料
• コレクション（障害者向け資料：レベル1）: テキストデータ
• コレクション（個別）: 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他; https://dl.ndl.go.jp/collections/B00035
• 収集根拠: オンライン資料収集制度
• 受理日（W3CDTF）: 2018-04-16T21:38:33+09:00
• 保存日（W3CDTF）: 2018-04-16
• 記録形式（IMT）: application/pdf
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 掲載誌（URI）: https://progearthplanetsci.springeropen.com/articles
• 掲載誌（国立国会図書館永続的識別子）: info:ndljp/pid/11018906; https://dl.ndl.go.jp/pid/11018906
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

• 要約等: A new method for granulometric-parameter-based reconstruction of sediment-transport pathways is proposed and is termed P-GSTA (grain-size trend analysis using principal component analysis) herein. The main advantage of this method is its applicability to depositional environments involving mixed transport processes, for instance, fluvial, tidal, and wave-influenced environments. In the P-GSTA method, a linear function with all significant granulometric parameters that are summed with different weighting factors was used to infer sediment-transport direction (sediment flux pattern); the previous grain-size trend analysis (GSTA) methods considered only three parameters (mean grain size, sorting, and skewness) with equal weighting. This study chose six parameters (namely, median grain size, coefficient of variation, skewness, kurtosis, and mud and gravel log-ratios) for calculation. First, the zero values of mud and gravel fractions are replaced, and their log-ratios are defined. Then, all values are standardized. Thereafter, principal component analysis (PCA) is conducted to determine the weighting factor of each granulometric parameter. Each principal component is then interpreted, and the function best representing a sediment flux pattern is chosen from these components. Trend vectors are calculated, solely on the basis of a map interpolated from the scores of the chosen principal component, as the two-dimensional gradient of this value. The P-GSTA method proposed in this study was applied to a modern microtidal coast (tidal sand flat along the Kushida River Delta, central Japan). Sediment-transport pathways reconstructed by this method were consistent with observed sediment-transport patterns determined by field experiments using tracer sediments and geomorphologic observation; the results of the previous GSTA method were inconsistent with the observations. The proposed method also revealed additional minor depositional processes on the sand flat, namely, the deposition of fluvial-channel lags and muddy particles. Thus, this study demonstrates that the proposed P-GSTA method is a potentially powerful tool to reconstruct sediment-transport patterns even under mixed transport processes, where the estimation of the sediment-transport function is difficult.
• DOI: 10.1186/s40645-018-0166-9; https://doi.org/10.1186/s40645-018-0166-9
• オンライン閲覧公開範囲: インターネット公開
• 著作権情報: © The Author(s). 2018; 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.
• 関連情報（URI）: http://hdl.handle.net/2433/229538; http://id.ndl.go.jp/digimeta/11068296; https://dl.ndl.go.jp/pid/11068296; http://link.springer.com/article/10.1186/s40645-018-0166-9/fulltext.html; http://link.springer.com/content/pdf/10.1186/s40645-018-0166-9.pdf
• 参照: Logratio analysis of components separated from grain‐size distributions and implications for sedimentary processes: An example of bottom surface sediments in a shallow lake; https://cir.nii.ac.jp/crid/1360865814744830336; Validation of appropriate estimation criteria for the number of components for separating a polymodal grain-size distribution into lognormal distributions; https://cir.nii.ac.jp/crid/1360865816804128384
• 参照: Dealing with Zeros and Missing Values in Compositional Data Sets Using Nonparametric Imputation; https://cir.nii.ac.jp/crid/1360011146232300800; Non-uniform sediment transport: dynamics of the active layer; https://cir.nii.ac.jp/crid/1360282589007384960; Sediment trend models fail to reproduce small‐scale sediment transport patterns on an intertidal beach; https://cir.nii.ac.jp/crid/1360292619173532800; Sediment transport patterns determined from grain size parameters: Overview and state of the art; https://cir.nii.ac.jp/crid/1360292621090471040; Grain-size trends used to assess the effective discharge for floodplain sedimentation, River Waal, the Netherlands; https://cir.nii.ac.jp/crid/1360292621258412288; The three-dimensional distribution of sedimentary facies and characteristics of sediment grain-size distribution in a sandy tidal flat along the Kushida River estuary, Ise Bay, central Japan; https://cir.nii.ac.jp/crid/1360855568784003584; Net sediment transport patterns over the Bohai Strait based on grain size trend analysis; https://cir.nii.ac.jp/crid/1360855569936934272; The coastal depositional system of a small mountainous river: a perspective from grain-size distributions; https://cir.nii.ac.jp/crid/1360855569965116160; Probabilistic Exner Sediment Continuity Equation for Mixtures with No Active Layer; https://cir.nii.ac.jp/crid/1361137044194102016; A settling tube system for sand-size analysis; https://cir.nii.ac.jp/crid/1361418519233160064; Between beds and sequences: stratigraphic organization at intermediate scales in the Quaternary of the Virginia coast, USA; https://cir.nii.ac.jp/crid/1361418521311427072; OPTIMAL INTERPOLATION AND ISARITHMIC MAPPING OF SOIL PROPERTIES; https://cir.nii.ac.jp/crid/1362544419572345472; Compositional Data Analysis: Where Are We and Where Should We Be Heading?; https://cir.nii.ac.jp/crid/1362825895037809920; A Simple Universal Equation for Grain Settling Velocity; https://cir.nii.ac.jp/crid/1363107370631188864; Application of grain size trend analysis for the determination of sediment transport pathways in intertidal areas; https://cir.nii.ac.jp/crid/1363388844457657984; Net sediment transport patterns inferred from grain-size trends, based upon definition of “transport vectors”; https://cir.nii.ac.jp/crid/1363388844680924928; The Statistical Analysis of Compositional Data; https://cir.nii.ac.jp/crid/1363388844943226752; Downdrift coarsening of beach foreshore sediments at tidal inlets: An example from the coast of New Jersey; https://cir.nii.ac.jp/crid/1363951794154844672; OPTIMAL INTERPOLATION AND ISARITHMIC MAPPING OF SOIL PROPERTIES III CHANGING DRIFT AND UNIVERSAL KRIGING; https://cir.nii.ac.jp/crid/1364233269109270528; Grain-size trends and transport along beaches: Example from eastern England; https://cir.nii.ac.jp/crid/1364233270037510656; A REVIEW OF GRAIN‐SIZE PARAMETERS; https://cir.nii.ac.jp/crid/1364233270590263040; Armoring をともなう河床低下について; https://cir.nii.ac.jp/crid/1390001204994523264
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: 学術機関リポジトリデータベース; https://irdb.nii.ac.jp; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles; 科学研究費助成事業データベース; https://kaken.nii.ac.jp/ja
• 書誌ID（NDLBibID）: 11068296; http://id.ndl.go.jp/bib/11068296
• NII論文ID: 120006410710