고구려의 한강 유역 진출과 물질문화의 변화 = The Expansion of Koguryo into the Han River Basin and Its Impact on Material Culture

다국어 초록 (Multilingual Abstract)

This study reassesses Koguryo’s advance into the Han River basin and the resulting transformations in regional material culture through a synthesis of historical records and archaeological data. The expansion is divided into two major phases-under Kings Gwanggaeto and Jangsu. In particular, after the fall of Hanseong in 475 CE, Mongchon Earthen-wall (formerly a Baekje royal fort) functioned as a forward base for southward operations, extending Koguryo’s sphere of influence across the central Korean Peninsula to areas such as Daejeon, Sejong, and Chungju. This trajectory is also evidenced south of the Han River by Koguryo fortifications, scattered stone-chamber tombs, the Chungju Koguryo stele, and Buddhist remains.
The distribution of Koguryo remains in southern Korea is, however, relatively limited, and large-scale settlements-unlike those of Baekje or Silla-have not been identified; thus, the impact of Koguryo material culture may likewise have been limited. Nevertheless, Koguryo elements-especially in pottery, roof tiles, stone-fortification techniques, and mural painting-were mediated into and selectively adopted by Baekje and Silla. In Baekje, “Sabi-style” ceramics incorporating Koguryo technologies and forms became established around the Sabi (Buyeo) capital area; in Silla, Koguryo-style components were partially applied to cavalry equipment and weaponry alongside the consolidation of a heavy cavalry system. Moreover, in the Han River basin-held by Koguryo for a time-technical and formal traits attributable to Koguryo persisted even after the Unified Silla period, notably in roof tiles and stone fortifications.