순천만과 보성벌교 연안습지의 퇴적환경과 퇴적률 = Sedimentary Environments and Accumulation Rates in Suncheon Bay and Boseong-Beolgyo Coastal wetland

다국어 초록 (Multilingual Abstract)

This study carried out an analyses on the surface sediments of the intertidal zone and their accumulation rates in relation to the annual environmental changes of the coastal wetlands in Sucheon Bay and Boseong-Beolgyo. In these areas, the seasonal mean grain sizes of sediments are coarsening in May, but in October and September the sizes are fining. The sediments are poorly to extremely poorly sorted and shows 0.05Φ in interval with no noticeable variation. The sediments are composed of gM, (g)M, sM and M in facies. The M facies is dominant except for the A area within the study area. In the areas, the tides mainly influence grain sizes, sorting and sedimentary facies while rainfalls relate with the environmental changes of the area as well as occasional changes of water discharge. The depositional environments show seasonal repetitions of erosion and deposition. The seasonal sedimentation rates within the areas are around -0.21㎝/yr to 11.07㎝/yr, resembling the semi-closed coastal wetlands of the South and West coasts of Korea. On the other hand, station B-1 has a continuous deposition, while station F-1 is erosive in the areas. In station B-1, burial and dredging constructions are in progress in line with the restoration of Suncheon Bay. In station F-1, the local annual September clam festivals of Boseong-Beolgyo were held from 20008 to 2014. Thus, artificial effects by those things exert some environmental influences to the areas. In conclusion, it is necessary that the seasonal sedimentary environmental changes of the areas must be monitored on the bases of this research.

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