3D topographical analysis of Hanoi, Vietnam (特集 地域情報学--地域研究と情報学の新たな地平) 3D Topographical Analysis of Hanoi, Vietnam

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Author(s)

Abstract

Analyzing the relief of terrain and the micro-topography of Hanoi can play an important role in explaining its urban transformation. To analyze topographical changes, it is necessary to use elevation data to generate a digital elevation model (DEM), a digital representation of ground surface and the most important element of topographical analysis for urban transformation, providing evidence for the existence of features such as old rivers, lakes, fills and land subsidence. Consequently, the DEM of Hanoi in 2005 was generated with data collected for 8,015 points. Based on the surface estimation method using Cubic B-Spline Function, the DEM is generated at2-meter resolution. The contour interval is 0.5 meter. The very subtle elevation gaps which can not be distinguished on the satellite image are significantly recognizable on this DEM. A second DEM was generated from the topographical map prepared by the French government in1950, now held in the French library. This DEM at 2-meter resolution is also based on DEM generation using the method of STRIPE. By comparing the two patterns of DEM for 1950 and2005, the areas of fills and land subsidence can be clarified.

Journal

  • Japanese Journal of Southeast Asian Studies

    Japanese Journal of Southeast Asian Studies 46(4), 519-531, 2009

    Center for Southeast Asian Studies, Kyoto University

Cited by:  2

  • Construction of Urban 3-D Model of Hanoi, Vietnam  [in Japanese]

    YONEZAWA Go , SAKURAI Kenichi , FUNABIKI Ayako , MASUMOTO Shinji , NONOGAKI Susumu , RAGHAVAN Venkatesh , SHIBAYAMA Mamoru

    情報地質 = Geological data processing 23(2), 54-55, 2012-06-15

    References (4)

  • Construction of 3D Urban Model of Hanoi, Vietnam  [in Japanese]

    YONEZAWA Go , SHOGA Hiroyuki , NONOGAKI Susumu , MASUMOTO Shinji , RAGHAVAN Venkatesh , SHIBAYAMA Mamoru

    情報地質 = Geological data processing 21(2), 122-123, 2010-06-15

    References (7)

Codes

  • NII Article ID (NAID)
    110007364549
  • NII NACSIS-CAT ID (NCID)
    AN00166463
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • Journal Type
    大学紀要
  • ISSN
    0563-8682
  • NDL Article ID
    10484946
  • NDL Source Classification
    ZG74(歴史・地理--アジア・アフリカ--東南アジア)
  • NDL Call No.
    Z8-392
  • Data Source
    CJPref  NDL  NII-ELS  IR  J-STAGE 
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