Emergence of a barchan belt in a unidirectional flow: Experiment and numerical simulation

被引:16
作者
Katsuki, A [1 ]
Kikuchi, M
Endo, N
机构
[1] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[2] Osaka Univ, Cybermedia Ctr, Toyonaka, Osaka 5600043, Japan
[3] Osaka Univ, Dept Earth & Space Sci, Toyonaka, Osaka 5600043, Japan
关键词
sand dune; barchan; transverse ripple; dune field; water tank experiment; numerical simulation;
D O I
10.1143/JPSJ.74.878
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We observed the time evolution of dune fields in a water tank experiment and simulated it by using a simple model without taking complex fluid dynamics into account. The initial sand bed changed its form to transverse ripples, that is, dunes with straight crest lines perpendicular to the flow direction. Then crescentic dunes, called barchans, evolved from transverse ripples.
引用
收藏
页码:878 / 881
页数:4
相关论文
共 19 条
  • [1] Selection of dune shapes and velocities - Part 1: Dynamics of sand, wind and barchans
    Andreotti, B
    Claudin, P
    Douady, S
    [J]. EUROPEAN PHYSICAL JOURNAL B, 2002, 28 (03) : 321 - 339
  • [2] [Anonymous], 1941, PHYS BLOWN SAND DESE
  • [3] DURAN O, CONDMAT0406392
  • [4] Barchan-shaped ripple marks in a wave flume
    Endo, N
    Kubo, H
    Sunamura, T
    [J]. EARTH SURFACE PROCESSES AND LANDFORMS, 2004, 29 (01) : 31 - 42
  • [5] Observation of the whole process of interaction between barchans by flume experiments
    Endo, N
    Taniguchi, K
    Katsuki, A
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2004, 31 (12) : L125031 - 3
  • [6] ENDO N, UNPUB EARTH SURF PRO
  • [7] THE BARCHANS OF SOUTHERN PERU
    FINKEL, HJ
    [J]. JOURNAL OF GEOLOGY, 1959, 67 (06) : 614 - &
  • [8] Relevant length scale of barchan dunes
    Hersen, P
    Douady, S
    Andreotti, B
    [J]. PHYSICAL REVIEW LETTERS, 2002, 89 (26) : 1 - 264301
  • [9] Corridors of barchan dunes: Stability and size selection
    Hersen, P
    Andersen, KH
    Elbelrhiti, H
    Andreotti, B
    Claudin, P
    Douady, S
    [J]. PHYSICAL REVIEW E, 2004, 69 (01): : 12
  • [10] Width, height and slope relationships and aerodynamic maintenance of barchans
    Hesp, PA
    Hastings, K
    [J]. GEOMORPHOLOGY, 1998, 22 (02) : 193 - 204