Setting up an exposure testing stand
Workshop on Historical Studies
Discussion among archaeologists in an artifact sorting area
Resin impregnation at the NNRICP
A project to preserve the Thang Long Imperial Citadel site, a World Cultural Heritage located in the heart of Vietnam’s capital city, has been undertaken since 2010 with the close cooperation of Japanese and Vietnamese experts. The NRICPT has been commissioned by the UNESCO Office in Hanoi as the base for Japanese efforts During the first half of this year, the following efforts were undertaken.
a) Field Study on Preservation of Excavated Remains
From August 7 to 9, a field study was conducted at the excavation site next to the site where the new Parliament House is being constructed. Sensors to measure moisture migration in the soil where archaeological remains are located were replaced and added. An additional test area was established to measure inhibition of surface evaporation by a sand layer covering. An outdoor exposure test was also begun to examine the effectiveness of conservation techniques using brick specimens with physical characteristics similar to ancient bricks unearthed from the site. Automated monitoring of local meteorological conditions will continue. Analysis of the data obtained will lead to proposals for appropriate conservation approaches.
b) Workshop on Historical Studies
On August 21, a workshop was co-organized with the Thang Long—Hanoi Heritage Conservation Center (TL Centre) and the Institute of Vietnamese Studies and Development Sciences, Hanoi National University (IVIDES). The on-site workshop covered the layout of the central area of the Thang Long Imperial Citadel and its comparison to other ancient capitals in East Asia. The workshop featured presentations by Japanese and Vietnamese experts based on their studies of historical records and results of recent excavations as well as a discussion. The layout and history of the Thang Long Citadel, much of which are still unclear, was actively discussed. In addition, “Selected Japanese and Vietnamese Papers on the Thang Long Citadel” was published in conjunction with the workshop.
c) Workshop on Archaeological Artifacts
From September 10 to 12, the 1st workshop on archaeological artifacts excavated at the Thang Long site was held in Hanoi. The workshop was co-organized with the TL Centre and enjoyed the cooperation of the Institute of Archaeology, the Imperial City Research Center, and the Nara National Research Institute for Cultural Properties (NNRICP). Participating Japanese and Vietnamese experts shared their knowledge and exchanged opinions on ceramics and roof tiles with regard to classification of their styles, techniques used to produce them, and sites where they were produced. These discussions took place while experts directly viewing unearthed objects. The participants were again reminded of the importance of such a joint study.
d) Invitation of a Vietnamese Expert
From September 10 to 28, an expert on wood material from Vietnam Forestry University was invited to the NNRICP to carry out joint experiments on techniques to conserve excavated wooden objects. Different laboratory experiments were conducted, including identification of tree species and examination of the effectiveness of resin impregnation, using test pieces unearthed from the Thang Long site along with fresh specimens from Vietnam.