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Collapse and recovery process of the sand spit at the Tenryu River mouth on the Pacific Coast of Japan
http://hdl.handle.net/2241/00157077
http://hdl.handle.net/2241/00157077ac01cbfc-d40e-401a-a4e4-b13ebd1f1866
名前 / ファイル | ライセンス | アクション |
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CEJ_60-4 (4.2 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2019-07-09 | |||||
タイトル | ||||||
タイトル | Collapse and recovery process of the sand spit at the Tenryu River mouth on the Pacific Coast of Japan | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
武若, 聡
× 武若, 聡× Tajima, Yoshimitsu× Takagawa, Tomohiro× Sato, Shinji |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | This paper investigates the collapse and recovery processes of the sand spit at the Tenryu River mouth on the Pacific Coast of Japan, when two characteristic typhoons, Man-Yi and Fitow, passed over the study site in the year 2007. Although these two typhoons caused equally high storm waves, these two events were different in principal wave directions and in the amount of river discharges. As a result, Man-Yi collapsed the sand spit, while Fitow rather enhanced the recovery of the sand spit. Successive still images recorded by six field cameras were analyzed to investigate the dynamic morphology change of the river mouth for 2 months during which these two events had occurred. Comparisons of obtained topography changes and various hydrodynamic characteristics yielded several findings: (i) the sand spit was breached approximately 6 h after the peak of flow velocity and 2 h after the peak of the water head difference across the sand spit; (ii) the breached part of the sand spit was refilled by wave-induced shoreward sediment transport; and (iii) a core sample showed three clear layers of graded sedimentary structures of gravel, which correspond to the number of observed high waves overtopping the sand spit. | |||||
書誌情報 |
Coastal engineering journal 巻 60, 号 4, p. 532-547, 発行日 2018-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2166-4250 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1793-6292 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1080/21664250.2018.1546264 | |||||
権利 | ||||||
権利情報 | © 2018 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/ by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way. | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | Informa UK Limited, trading as Taylor & Francis Group published on behalf of Japan Society of Civil Engineers |