• 한국지형학회지
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• 제24권4호
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• pp.27-41
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• 2017

In this study, geomorphological and geological research has been carried out to estimate the possibility of ancient port location near Hwaseong Dangseong. Geomorphological characteristics around Eunsupo were analyzed through comparison of past and present topographic maps and field survey. Grain size, age dating, and geochemical analysis on surface sediments and borehole sediments were performed. Through the geomorphological characteristics analysis, it was interpreted that Eunsupo area was submerged in seawater especially at high tide in the past, and that ships could approach to the inside of the area through the tidal channel which were developed in the area. It is also assumed that ships were anchored at a low elevation point in the area. The paleo-environmental change in the area was analyzed based on the classification of sedimentary environment using grain size distribution of surface and borehole sediments and geochemical analysis. It was confirmed that the geomorphological interpretation for the possibility of ancient port location coincided well with the paleo-environmental change interpreted through sediment analysis. This study is a basic study for estimating ancient port location, and it is expected that more accurate paleo-environmental changes will be restored through detailed geomorphological survey and additional borehole analysis in the future research.

• 자원환경지질
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• 제55권2호
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• pp.137-148
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• 2022

본 연구는 화성 연안 지역을 대상으로 삼국 및 통일신라시대의 환경 조건에서의 해양물리모델 기반의 선박 이동을 모의하여 고대포구 추정지의 자연과학적 해석을 통한 증거를 제시하고자 하였다. 이를 위하여 연구지역의 시추공 퇴적물 분석을 통한 고지형면 복원 및 과거 지형도 기반 해안선 자료를 구축하였고, 과거 환경 조건을 기반으로 하여 FVCOM 해양물리모델을 통한 표층 조류 흐름 및 고대 선박으로 가정한 부유물질 이동 경로에 대한 모의를 수행하였다. 그 결과로, 고대포구 위치로 추정되는 은수포 일대에서 포구에서부터 외해로 선박이 이동하는 경로의 모의가 잘 이루어졌으며, 자연과학적인 방법으로 고대포구 입지 추정의 신뢰성을 확보하였다.

• 한국지형학회지
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• 제26권2호
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• pp.39-54
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• 2019

In this paper, based on evidence of coastal sediment, we show that erosion and sedimentation environments are very sensitive to sea level changes during the Medieval Warm Period (MWP) and the Little Ice Age (LIA). We identified four sedimentary units(4.57-3.07m), which formed in the Dark Age Cool Period (DACP), MWP and LIA were classified based on the lithostratigraphy, grain size distribution, magnetic susceptibility and geochemistry of a drilling core taken from the west coast of Hwaseong City. The unconformity surfaces as boundaries of the units were also identified by the lithostratigraphy shown on the drilling core. We propoese that sedimentation was dominant in the area during the periods of sea level rise, whereas erosion prevailed during the periods of sea level fall. Particularly, extreme events, such as floods and typhoons are believed to have accelerated these processes, and we found the associated evidence in sediments of two units. This study provides an example of estimating the relative sea level variation using coastal sediments and may be useful for studying past sea level changes around the Korean Peninsula.