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Digital photogrammetry for the documentation of structural damage in earthen archaeological sites: the case of Ajina Tepa, Tajikistan


Reference:

Fujii, Y., Fodde, E., Watanabe, K. and Murakami, K., 2009. Digital photogrammetry for the documentation of structural damage in earthen archaeological sites: the case of Ajina Tepa, Tajikistan. Engineering Geology, 105 (1-2), pp. 124-133.

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    Official URL:

    http://dx.doi.org/10.1016/j.enggeo.2008.11.012

    Abstract

    Ajina Tepa is one of the most important archaeological sites in central Asia and it was fully excavated in the 1960s using modern documentation techniques. The UNESCO/Japan Trust Fund project ‘Preservation of the Buddhist Monastery of Ajina Tepa, Tajikistan’ started in 2005 and will be completed in 2008. Scientific documentation being one of the project aims, three-dimensional mapping of the walls and geomorphological mapping of the whole site were carried out. Digital stereo-photogrammetric techniques were applied to record the surface morphology of the earthen walls. At present, the walls are heavily eroded, especially when compared with their outlines as recorded in the 1960s. The top parts of the damaged walls are rounded and the basal parts typically show the erosion pattern known as coving. Rain and wind cause decay of the top parts and have created their rounded shape. At the bottom of the walls, erosion is caused by salt attack in combination with abrasion from wind and windblown silt. When the walls lose strength under their own load, the upper and middle parts of the walls may collapse suddenly. Digital photogrammetric techniques are extremely useful for documenting such phenomenon and in determining the shape of the walls before collapse. It is shown here that such a monitoring system supplies the basic data which enables measures to be taken to prevent collapse.

    Details

    Item Type Articles
    CreatorsFujii, Y., Fodde, E., Watanabe, K. and Murakami, K.
    DOI10.1016/j.enggeo.2008.11.012
    Uncontrolled Keywordserosion, loess, close-range photogrammetry, weathering, salt
    DepartmentsFaculty of Engineering & Design > Architecture & Civil Engineering
    Publisher StatementFodde_2009_Engineering_Geology_105_1_2_124.pdf: NOTICE: this is the author’s version of a work that was accepted for publication in Engineering Geology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Engineering Geology, vol 105, issues 1-2, 2009, DOI 10.1016/j.enggeo.2008.11.012
    RefereedYes
    StatusPublished
    ID Code12871

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