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Technical analysis of a Central Asian wall painting detached from a Buddhist cave temple on the northern Silk Road

机译:丝绸之路北部一座佛教洞穴庙宇中移出的中亚壁画的技术分析

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摘要

A great number of Central Asian wall paintings, archeological materials, architectural fragments, and textiles, as well as painting fragments on silk and paper, make up the so called Turfan Collection at the Asian Art Museum in Berlin. The largest part of the collection comes from the Kucha region, a very important cultural center in the third to ninth centuries. Between 1902 and 1914, four German expeditions traveled along the northern Silk Road. During these expeditions, wall paintings were detached from their original settings in Buddhist cave complexes. This paper reports a technical study of a wall painting, existing in eight fragments, from the Buddhist cave no. 40 (Ritterhohle). Its original painted surface is soot blackened and largely illegible. Gruwedel, leader of the first and third expeditions, described the almost complete destruction of the rediscovered temple complex and evidence of fire damage. The aim of this case study is to identify the materials used for the wall paintings. Furthermore, soot deposits as well as materials from conservation interventions were of interest. Non-invasive analyses were preferred but a limited number of samples were taken to provide more precise information on the painting technique. By employing optical and scanning electron microscopy, energy dispersive X-ray spectroscopy, micro X-ray fluorescence spectroscopy, X-ray diffraction analysis, and Raman spectroscopy, a layer sequence of earthen render, a ground layer made of gypsum, and a paint layer containing a variety of inorganic pigments were identified.
机译:在柏林亚洲艺术博物馆,大量的中亚壁画,考古材料,建筑碎片和纺织品以及丝绸和纸上的绘画碎片组成了所谓的“ Turfan收藏”。藏品中最大的一部分来自库车地区,该地区是三至九世纪的非常重要的文化中心。在1902至1914年之间,四支德国探险队沿着北部丝绸之路行进。在这些考察中,壁画与佛教洞穴群中的原始画作脱离了联系。本文报告了对一幅壁画的技术研究,该壁画存在于八号佛教洞中,分为八个碎片。 40(Ritterhohle)。其原始的涂漆表面是烟熏黑的,而且难以辨认。第一和第三次远征队的负责人格鲁威德尔(Gruwedel)描述了重新发现的圣殿建筑群几乎被完全摧毁以及火灾的证据。本案例研究的目的是确定用于壁画的材料。此外,煤烟沉积物以及来自保护措施的材料也令人关注。首选非侵入性分析,但要采集有限数量的样本以提供有关绘画技术的更精确信息。通过使用光学和扫描电子显微镜,能量色散X射线光谱仪,微X射线荧光光谱仪,X射线衍射分析仪和拉曼光谱仪,土层的层顺序,由石膏制成的底层和涂料层鉴定出含有多种无机颜料。

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