• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

A Study for the Dynamics of Dunes in Various Environment

Research Project

Project/Area Number 11837017
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research InstitutionGraduate school of Engineering, Osaka Prefecture University

Principal Investigator

NISHIMORI Hiraku  Osaka Prefecture University, Department of Mathematical Sciences, Graduate school of Engineering, Associate Professor, 工学研究科, 助教授 (50237749)

Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsdunes / nonlinear dynamics / granular material / pattern formation / 複雑系 / 散逸点の動力学 / 散逸系の動力学
Research Abstract

In this project, using computer simulations and theoretical analysis, we investigated the pattern formation process of dunes and their dynamics in various environment.
Specifically, i) pattern selection mechanism of dunes under unsteady wind, ii) pattern formation of dunes in semi-arid region, iii) dynamics of interacting barchans, and, iv) pattern dynamics of river channels, are intensively studied.
For these respective subjects, we found that i) the selection mechanism of dunes' trend under unsteady wind is simply explained by the superposition of linearly unstable modes, ii) the formation of vegetated dunes, especially parabolic, are simulated using a inter-suppression dynamics between plant growth and sand transport. iii) size distribution of barchans can simply be explained using the group-dynamics of dunes. iv) dynamics of river channel is treatable using a similar model as that for dunes.
Through the research process of these subjects, we got fundamental methodology for the unified mathematical treatment of various geo-morphological processes, which is the next issue of our study.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] H.Nishimori, H.Tanaka: "A Simple Model for the Formation of Vegetated Dunes"Earth Surface Processes and Landforms. 26. 1143-1150 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 西森拓, 田仲浩久: "植物の成長を考慮した砂丘のモデル"数理解析研究所講究録. 1184. 41-49 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 柳田達雄, 西森拓, 小西哲郎: "川の蛇行網状転移"数理解析研究所講究録. 1184. 30-40 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Momiji, H.Nishimori, S.R.Bishop: "On shape and migration speed of a proto-dune"Earth Surface Processes and Landforms. 27. 1335-1338 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 西森拓, 神村俊法, 楓弘志: "砂丘群の衝突合体緩和模型"数理解析研究所講究録. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 西森拓(分担執筆): "動く砂丘-砂のダイナミクス"複雑系の秩序と構造(国際高等研究所出版部). 121 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 西森拓(分担執筆): "複雑系の事典"朝倉書店. 433 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Nishimori, H.Tanaka(分担執筆): "Concepts and Modelling in Geomorphology : International Perspectives"(出版予定). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H. Nishimori, H. Tanaka: "A Simple Model for the Formation of Vegetated Dunes"Earth Surface Processes and Landforms. 26. 1143-1150 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Momiji, H.Nishimori and S.R.Bishop: "On shape and migration speed of a proto-dune"Earth Surface Processes and Landforms. 27. 1335-1338

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Nishimori, H.Tanaka: "A Model for vegetated dunes(in Japanese)"RIMS, Kokyuroku. 1184. 41-49

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Yanagita, H.Nishimori and Tetsuo Konishi: "The meandering-braided transition of river channel (in Japanese)"RIMS, Kokyuroku. 1184. 30-40

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Nishimoori, T.Kamimura and H.Momiji: "A dynamical model for the size distribution of dunes (in Japanese)"RIMS, Kokyuroku. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Nishimori et. al.: "Subject-book of Complex Systems (in Japanese, FUKUZATSUKEI NO JITEN)"Asakura syoten, Tokyo. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.Hishimori, H.Tanaka: "A Simple Model for the Formation of Vegetated Dunes"Earth Surface Processes and Landforms. 26. 1143-1150 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 柳田達雄, 西森拓, 小西哲郎: "川の蛇行網状転移"数理解析研究所講究録. 1184. 30-40 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 西森拓(共著): "国際高等研究所報告書「複雑点の秩序と構造」"国際高等研究所. 121 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hiraku Nishimoru: "A Simple Model for the Formation of Vegetated Dunes"Earth Surface Processes and Landforms. (発表予定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 西森拓: "植生を考慮した砂丘モデル"数理解析研究所講究録. 1184. 41-49 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 「複雑系の事典」編集委員会(編): "複雑系の事典"朝倉書店. 448 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 西森 拓: "物理学論文選集XI 粉粒体の物理学"日本物理学会. 124 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 小川 泰(他): "形の科学事典"朝倉書店. 予定 (2000)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi