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제주도 이호.함덕 해빈퇴적물의 계절적 변화에 관한 연구
윤정수,박용성,김태정,박상운,Youn, Jeung-Su,Park, Yong-Seung,Kim, Tae-Joung,Park, Sang-Woon 대한자원환경지질학회 2008 자원환경지질 Vol.41 No.2
The Iho and Hamdeok beaches, the major coastal beaches in Jeju Island, have been studied through size analysis and using an experimental extension pole and sediment trap in beach profile, in order to understand their textural characteristics, migration patterns, and seasonal change in beach geometry. The Iho beach is composed of coarse and medium sands, 590 m in total length. The foreshore slope is 12.3$^{\circ}$ in summer and 10.8$^{\circ}$ in winter, which shows more steeper in summer. The Hamdeok beach consisting mostly of shell fragments is 950 m long, $5.7{\sim}7.4^{\circ}$ steep and 97.4${\sim}$114.5 m wide, respectively. The suspended load drift concentrations in the studied beaches showed 4.5 mg/l during the period of summer and 33.2 mg/l in winter, and those of fine-grained sediments are derived mostly from the marine of northeastward direction. The typical beach transformation of the Iho beach is resulting from the construction of jetties in the west side that built up the sand inside the jetties, whereas the erosion is occurring on the east side of beach. The center and berm sides of the sand in the Hamdeok beach drift into the dune side during the period of the stormy winter season. 제주도의 주요 해수욕장인 이호와 함덕해빈에 대한 해빈단면 조사와 입도분석 연구를 통해 해빈퇴적물의 분포경향과 해빈특성을 파악하고, 폴대와 포사기 조사를 통한 계절별 해빈사의 이동방향과 이동량 및 해빈지형 변화상태를 파악하였다. 이호해빈은 중조립질 모래로 구성되어 있고 총길이 590m이며, 경사는 하계 12.3$^{\circ}$, 동계 10.8$^{\circ}$로 하계가 다소 높은 편이다. 함덕해빈은 패각편 모래로 구성되어 있고 총길이 950m이며, 경사와 폭은 각각 하계 5.7$^{\circ}$, 114.5m, 동계 7.4$^{\circ}$, 97.4m이다. 해수중의 해빈 부유사의 이동량은 동계가 33.2 mg/l로 하계의 4.5 mg/l 보다 많았고 주로 북동 방향에서 해빈모래가 공급되고 있었다. 이호해빈은 해빈 동쪽에 축조된 방사제의 영향으로 모래유실에 의한 해빈변형이 일어나고 있었고, 함덕해빈은 해빈 중앙부와 애도지역에서 북서계절풍에 의한 사구쪽으로 표사이동이 일어나고 있다.
섬진강 하구역 지형변화에 따른 잘피 서식지의 분포 특성
백승균(Seung-Gyun Baek),서영교(Young Kyo Seo),김종규(Jongkyu Kim),김태정(Tae-Joung Kim) 전남대학교 수산과학연구소 2020 수산과학연구소논문집 Vol.28 No.2
Seagrass plays an important role and functions in coastal and estuarine ecosystems such as water quality improvement and coastal purification, coastal ecosystem feeding, spawning and growing place of fish. Recently, the changes of seawater flow and marine environment have occurred due to coastal reclamation and construction of artificial structures in Seomjin River estuary. Therefore, it is expected to affect the distribution of seagrass in the Seomjin River estuary. In order to reconstruct and manage the seagrass habitat in Seomjin River estuary, we investigated the spatial variation of seagrass habitat according to the coastal topographic changes using remote sensing data. We tried to extract coastline and boundaries of seagrass habitat from the satellite images and aerial photographs, and conduct overlay analysis to identify the changes in location and area of coastal topography and seagrass habitat.