ダウンロード数: 362
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
j.margeo.2016.11.004.pdf | 3.76 MB | Adobe PDF | 見る/開く |
タイトル: | Extreme block and boulder transport along a cliffed coastline (Calicoan Island, Philippines) during Super Typhoon Haiyan |
著者: | Kennedy, Andrew B. Mori, Nobuhito https://orcid.org/0000-0001-9082-3235 (unconfirmed) Yasuda, Tomohiro Shimozono, Takenori Tomiczek, Tori Donahue, Aaron Shimura, Tomoya https://orcid.org/0000-0001-8284-0668 (unconfirmed) Imai, Yuki |
著者名の別形: | 森, 信人 |
発行日: | 1-Jan-2017 |
出版者: | Elsevier BV |
誌名: | Marine Geology |
巻: | 383 |
開始ページ: | 65 |
終了ページ: | 77 |
抄録: | This paper presents data and analysis for block and boulder transport during Super Typhoon Haiyan along a 4.5 km long, low (5–12 m) cliffed coastline in Calicoan Island, Eastern Samar, Philippines. Wave runup exceeding 15.2 m elevation above mean sea level drove large limestone clasts, with volumes up to ~ 83 m3, up to ~ 280 m inland. A few very large clasts with volumes 65–132 m3 were not transported by the waves. When combined with recent transport reported in May et al. (2015), Cox et al. (2016), and other literature, it is becoming increasingly clear that the largest blocks transported by storms overlie much of the tsunami transport range, increasing the difficulty in attributing the transport source without additional evidence. Comparison of present results with a global database of storm boulder transport shows a mass-elevation envelope outside of which no transport is observed. Initiation of motion criteria were extended to include non-rectangular cross-sections, which significantly reduces inferred velocities, particularly for overturning motion. These new relations were applied to the largest observed sliding and overturning boulders while considering coefficient uncertainties, and resulting velocity uncertainty was large enough that direct inference of wave heights would be problematic. Estimates of initiation velocities for cliff-edge boulders computed using lifting/joint-bounded relations were unreasonably large when compared to those for sliding and overturning boulders, suggesting that processes other than Bernoulli lift forces dominated at cliff edges. |
著作権等: | © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ The full-text file will be made open to the public on 01 January 2019 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/219509 |
DOI(出版社版): | 10.1016/j.margeo.2016.11.004 |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。