ABSTRACT

In consequence of the flooding of the Loing river in 2016, some of the storage areas for the Musée Girodet were submerged, with 3000 artworks affected. Following this, the painting Le Jeune Trioson (nineteenth century, attributed to the school of Anne-Louis Girodet De Roucy Trioson) developed severe blanching in the varnish, over the dark background in particular. An initial non-contact investigation with a spectral-domain optical coherence tomographic system operating in the near-infrared range (830–1020 nm) gave valuable insights into the development of this alteration. This detected a change in the scattering properties of the blanched varnish compared to the non-blanched one. The depth at which the modification occurred has been clearly identified, together with different stages of alteration corresponding to the severity of the visible blanching. This information obtained non-invasively is useful for guiding a later targeted sampling campaign and for informing treatment planning for varnish removal.

摘要

由于 2016 年 Loing 河的洪水泛滥，Musée Girodet 的一些储藏区被淹没，3000 件艺术品受到影响。在此之后，绘画Le Jeune Trioson（十九世纪，归因于 Anne-Louis Girodet De Roucy Trioson 的学校）在清漆中出现了严重的发白，特别是在黑暗的背景下。使用在近红外范围（830-1020 nm）运行的光谱域光学相干断层扫描系统进行的初步非接触式研究为这种改变的发展提供了宝贵的见解。这检测到与未漂白的清漆相比，漂白的清漆的散射特性发生了变化。改变发生的深度已经清楚地确定，以及与可见变白的严重程度相对应的不同改变阶段。以非侵入方式获得的这些信息对于指导以后的有针对性的采样活动和为清除漆膜的治疗计划提供信息非常有用。