Collision Dynamics of Two Barchan Dunes Simulated Using a Simple Model

• Katsuki Atsunari

  Department of Physics, Osaka University Cybermedia Center, Osaka University

• Nishimori Hiraku

  Department of Mathematical Sciences, Osaka Prefecture University

• Endo Noritaka

  Department of Earth and Space Sciences, Osaka University

• Taniguchi Keisuke

  Department of Earth and Space Sciences, Osaka University

Abstract

The collision processes of two crescentic dunes called barchans are systematically studied using a simple computer simulation model. The simulated processes, coalescence, ejection and reorganization, qualitatively correspond to those observed in a water tank experiment. Moreover we found the realized types of collision depend both on the mass ratio and on the lateral distance between barchans under initial conditions. A simple set of differential equations to describe the collision of one-dimensional (1D) dunes is introduced.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 74 (2), 538-541, 2005

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• sand dune
• barchan dune
• collision process
• water tank experiment
• saltation
• avalanche
• numerical simulation

Details

• CRID: 1390001204188406912
• NII Article ID: 110001979410
• NII Article ID: 210000105848
• NII Article ID: 130004539128
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.74.538
• BIBCODE: 2005JPSJ...74..538K
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 7251123
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7251123
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.74.538
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed