Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

Modelling the sedimentary signature of long waves on coasts: implications for tsunami reconstruction

Pritchard, D. and Dickinson, L. (2008) Modelling the sedimentary signature of long waves on coasts: implications for tsunami reconstruction. Sedimentary Geology, 206 (1-4). pp. 42-57. ISSN 0037-0738

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

We describe a process-based mathematical model of suspended and bedload sediment transport under long, non-breaking waves on a plane beach, and we use this model to investigate the relationship between the hydrodynamics of run-up and run-down and the resulting erosive and depositional 'signature' which the wave leaves. In particular, we compare the results of our 'forward' model with several recently proposed methods for reconstructing tsunami hydrodynamics from their deposits. We find that sediment transport, both as bedload and in suspension, is strongly controlled by asymmetries in the direction of maximum velocity; in the latter case it is also affected by settling lag, especially around the point of maximum run-up. The combination of these effects appears to preclude simple methods of reconstructing tsunami hydrodynamics from the large-scale features of their signatures; however, our results suggest some promising avenues for further investigation.

Item type: Article
ID code: 19626
Keywords: tsunami, sediment transport, event deposits, Geology, Mathematics, Stratigraphy, Geology
Subjects: Science > Geology
Science > Mathematics
Department: Faculty of Science > Mathematics and Statistics
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 27 May 2010 11:50
    Last modified: 05 Sep 2014 02:16
    URI: http://strathprints.strath.ac.uk/id/eprint/19626

    Actions (login required)

    View Item