Downloads: 154

Files in This Item:
File Description SizeFormat 
j.margeo.2016.11.004.pdf3.76 MBAdobe PDFView/Open
Title: Extreme block and boulder transport along a cliffed coastline (Calicoan Island, Philippines) during Super Typhoon Haiyan
Authors: Kennedy, Andrew B.
Mori, Nobuhito  kyouindb  KAKEN_id  orcid (unconfirmed)
Yasuda, Tomohiro
Shimozono, Takenori
Tomiczek, Tori
Donahue, Aaron
Shimura, Tomoya  kyouindb  KAKEN_id  orcid (unconfirmed)
Imai, Yuki
Author's alias: 森, 信人
Issue Date: 1-Jan-2017
Publisher: Elsevier BV
Journal title: Marine Geology
Volume: 383
Start page: 65
End page: 77
Abstract: 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.
Rights: © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
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.
DOI(Published Version): 10.1016/j.margeo.2016.11.004
Appears in Collections:Journal Articles

Show full item record

Export to RefWorks

Export Format: 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.