The Eurim Lake and its Hosting Valley : A Unique Ancient Reservoir with Bank Constructions in Korea(<Featured Article>Earth Surface Processes, Natural Disasters and Historical Environmental Changes)

概要

論文の詳細を見る
The Eurim Lake is the oldest artificial reservoir in Korea, and its hosting valley possesses ancient embankment facilities. The historical documents give us information about two probable stages of the lake construction: the late Iron Age (ca. 2000 BP) and the time of King Jinheung of the Silla Dynasty at 540-576 AD (1460-1424 BP). This article presents new sediment coring data (three boreholes), which allowed us to reconstruct the history of the lake and substantiate the stages of its construction, and new geomorphologic data, which suggest the timing and scenarios of the activities linked to the construction of valley embankments. The artificial bank of the lake consists of i) old alluvial deposits (< 307 m a.s.l.), ii) predamming lake deposits (307-310.4 m), iii) artificial materials of the dam (310.4-315.4 m), and iv) post-damming artificially contaminated and disturbed sediments (> 315.4 m). These four bank units suggest two major stages of the lake development, pre-damming and post-damming, which are also recognized in the lake sediments. The AMS <14>^C dating shows that the lake existed between ca 1920 and 1370 cal. BP as a naturally or artificially dammed basin. During this period the normal sedimentation in the lake proceeded at a rate of 4 mm/yr. The further development of the lake was disturbed by dam construction after the middle of the 7^<th> century AD. The age of the lake sediments, suggesting their accumulation before the construction of the dam, and our geomorphologic observations in the lake valley allowed us to hypothesize about a scenario of as early as ca. 2000 BP irrigation activities of ancient people.
日本地形学連合の論文
2012-04-25

The Eurim Lake and its Hosting Valley : A Unique Ancient Reservoir with Bank Constructions in Korea(<Featured Article>Earth Surface Processes, Natural Disasters and Historical Environmental Changes)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク