가로림만 점착성 퇴적물에 대한 침식매개변수의 지엽적⋅계절적⋅공간적 변화 연구 (A Study for Local⋅Seasonal⋅Spatial Variation of Erosion Parameters of Cohesive Sediments from Garorim Bay)

서지정보

· 발행기관 : (사)한국연안방재학회
· 수록지 정보 : 한국연안방재학회지 / 6권 / 4호 / 147 ~ 157페이지
· 저자명 : 양수현, 허제우, 유홍열, 황규남

초록

In this study, erosion experiments using an annular flume of Chonbuk National University were carried out to quantify the erosion properties of cohesive sediments from Garorim Bay. The erosion properties were analyzed in connection with the physico-chemical properties of cohesive sediment, and analysis of local, seasonal and spatial variation was carried out. Erosion tests were conducted total 18 times for sediment samples collected twice in the fall and winter at two sites in Garorim Bay, and were performed under a uniform bed condition but a different bed density respectively. For Garorim Bay sediments, it can be seen that  increases from 0.20 N/m2 to 0.48 N/m2 and  decreases exponentially from 133.28 mg/cm2/hr to 7.33 mg/cm2/hr, as the bed density varies from 1.15 g/cm3 to 1.40 g/cm3, local and seasonal variation were almost negligible. The erosional parameters of Garorim Bay sediments are found to be remarkably different in quantity as compared with those for cohesive sediments from other sites. Particularly,  for Garorim Bay sediments is known to be larger than that of Kunsan sediments but similar with that of Sihwa sediments, while  for Garorim Bay sediments is shown to be larger than that for Sihwa sediments and to be smaller than that for Kunsan sediments.

영어초록

In this study, erosion experiments using an annular flume of Chonbuk National University were carried out to quantify the erosion properties of cohesive sediments from Garorim Bay. The erosion properties were analyzed in connection with the physico-chemical properties of cohesive sediment, and analysis of local, seasonal and spatial variation was carried out. Erosion tests were conducted total 18 times for sediment samples collected twice in the fall and winter at two sites in Garorim Bay, and were performed under a uniform bed condition but a different bed density respectively. For Garorim Bay sediments, it can be seen that  increases from 0.20 N/m2 to 0.48 N/m2 and  decreases exponentially from 133.28 mg/cm2/hr to 7.33 mg/cm2/hr, as the bed density varies from 1.15 g/cm3 to 1.40 g/cm3, local and seasonal variation were almost negligible. The erosional parameters of Garorim Bay sediments are found to be remarkably different in quantity as compared with those for cohesive sediments from other sites. Particularly,  for Garorim Bay sediments is known to be larger than that of Kunsan sediments but similar with that of Sihwa sediments, while  for Garorim Bay sediments is shown to be larger than that for Sihwa sediments and to be smaller than that for Kunsan sediments.

참고자료

· 없음