• 보존과학연구
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• s.13
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• pp.9-13
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• 1992

An Woljung wooden bridge structure, which assumde to has been built in the unification of shilla dynasty, was excavated at Nam-chun river basin inKyung-ju. As a result of primary investigation, the weigh loss was 70-80% and the volumetric shrinkage was up to 38% without any conservation. Between 1986 and1991, they were conserved by the two step PEG treatment at the Mokpo Conservation Institute for Maritime Archaeological Finds.

• 한국문화재보존과학회:학술대회논문집
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• 2007.05a
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• pp.31-32
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• 2007

• 한국문화재보존과학회:학술대회논문집
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• 2007.05a
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• pp.11-12
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• 2007

• 보존과학연구
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• s.35
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• pp.45-55
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• 2014

The small dining tables which are made of bamboo were deteriorated condition when those were excavated from Mado shipwreck No.1. Therefore, preliminary test was conducted for consolidation (Sucrose, Dammar gum, Cetyl alcohol and Polyethylene glycol 4000) then impregnated and vacuum freeze dried. After the test, since the treatment with vacuum freeze drying using an aqueous solution of PEG 4000 keep the shape well the most and present bright colour, waterlogged archaeological bamboo conserved with vacuum freeze drying using an aqueous solution of PEG 4000. One bamboo table consolidated with soluble PEG 4000 from 10% to 40%, then vacuum freeze dried. Another impregnated with soluble PEG 4000 from 10% to 70%. After that, it was separated and held in polycarbonate sheet for preventing bending during dry. The small dining tables are the three dimensional shapes and have some loss. Therefore the mounting for support tables were necessary which are made of acrylic sheet. It keep the table shape and make it convenient for storage and handling.

• Journal of Conservation Science
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• v.31 no.3
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• pp.279-285
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• 2015

The purpose of this study was to analyze radiocarbon dating, using wiggle match, of a wooden board from Yeongheung-do shipwreck excavated from Yeongheung-do in Incheon Ongjingun. The result of wiggle matching for 5 decennial tree-ring block samples of the hull bottom board produced ${\pm}2{\sigma}$ radiocarbon date (95.4% confidence interval) as A.D. 710~730 or A.D. 750~774. It indicated that the Yeongheung-do shipwreck belonged to the early or middle of the 8th century. Radiocarbon dating results confirmed the date speculated by archaeologists according to ship structure and pottery style.

• 보존과학연구
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• s.37
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• pp.17-26
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• 2016

Mado shipwreck No.1 is where a total of 57 bamboo slips were discovered. Bamboo slips first excavated in the sea. It treated low concentration PEG vacuum freeze drying treatment refer to the method that research finding consolidation about waterlogged bamboo before. PEG 2000 and PEG 4000 used to consolidation materials but some bamboo slips that treated PEG 4000 surface color have been darken using heat gun at surface treatment. So the residual PEG on object's surface was remove steam iron. Bonding used to put 100% PEG 2000 the rayon paper in the surface for stabilization and giving a strength.

• Korean Journal of Heritage: History & Science
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• v.57 no.1
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• pp.180-195
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• 2024

Community beliefs of the coastal villages in Gochang are cultural activities and rituals manifesting the hopes and spiritual worlds of the locals who live off the sea and tidal mud. Along with their societal functions wishing for peace, maritime safety, and good catches, the values of the Jwajeongdam (How god came to be), Yuraedam (History of worshipping), and Yeongheomdam (Stories of miracles), as living heritage need to be reexamined according to the recent Convention for the Safeguarding of the Intangible Cultural Heritage. The community beliefs of the coastal villages in Gochang, where outstanding universal intangible and tangible values coexist, have been perpetually transmitted in interactions with tidal mud and the ecological environments of the sea. They reinforce the "Outstanding Universal Value" UNESCO mentions and sustainability that connects the past, present, and future. Furthermore, a coastal area is endowed with international accessibility over regionality. Hence the community beliefs are charged with eco-cultural values, which its preservation and promotion should also focus on to provide policies and protection activities. In short, the tidal mud and community beliefs of coastal villages in Gochang, which according to the concept of UNESCO's "mixed heritage," meet the values for natural, cultural, and intangible heritage at the same time, and so must be approached not in the scope of points or lines, but also in surfaces when arranging protection initiatives.

• Korean Journal of Heritage: History & Science
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• v.46 no.2
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• pp.206-219
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• 2013

This study aims to estimate firing temperature and physicochemical properties of the four clay bricks excavated from the Maritime Province of Siberia. Analysis result shows that the specimens are composed of clay, quartz and feldspar, and some specimens include carbonized organic materials which were probably added in order to enhance its physical strength in bricks. Major mineral components of the bricks are quartz, illite and clay minerals. The result identifying the existence of silimanite by XRD suggests that white material of the Koc 1 was painted for a certain purpose. Unlike most specimens which contained hematite, several samples contain Mullite. Such result suggests that some bricks were fired at high temperature. Furthermore, the results from TG analysis which does not display exothermic peak which appears at between $800^{\circ}C$ to $1,000^{\circ}C$ but display endothermic peak at $900^{\circ}C$ and it also confirms that they were exposed at $900^{\circ}C$ or higher.

• Journal of Conservation Science
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• v.35 no.2
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• pp.131-144
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• 2019

The Seosan Geomenyeo(black submerged rocks), once located at the Cheonsuman bay of Buseokmyeon in Seosan, Korea, is a reef rock now exposed on the land surface. The Geomenyeo can also be found in the ancient geographic maps around the area. The local geographic names, like Buseok and Buseoksa temple are derived from the Geomenyeo. It is composed of ultramafic rocks complex and intrusive felsic igneous rocks. These rocks show diverse facies with various petrographic characteristics caused by geological processes such as intrusion and alteration. Ultramafic rocks complex can be roughly categorized as coarse grained ultramafic rocks and medium grained mafic rocks. Both cases are composed of pyroxene and amphibole, showing the general rock facies of pyroxenite, diabase and lamprophyre. Felsic igneous rocks includes pinkish medium grained granite, porphyritic amphibole granite and aplite with varied mineral compositions. The Geomenyeo is the only ultramafic rocks complex in the Cheonsuman Bay; moreover, it has a distinctive geological and scenic value, as well as a symbolic property. In order to preserve the Geomenyeo, it is necessary to investigate and promote it as a designated heritage site through academic studies, and compensate for the convenience and protection facilities. Additionally, the Geomenyeo should be evaluated as a maritime heritage site, due to the unique local culture as it succeeds the recognition of forefathers which regarded it as a local scenic site with significance.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.11a
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• pp.157-159
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• 2023

In order to promote the historicity of Eoryongdo Lighthouse, which was designated as a lighthouse cultural heritage in August 2023, and to utilize it as a water-friendly space, the facilities were improved to maintain the function of the lighthouse smoothly, and the buildings were reinforced to utilize it as a water-friendly space. We want to inform the public of the historical value of the lighthouse and make every effort to ensure maritime traffic safety, which is the original role of the lighthouse.