The distribution and transportation of fine-grained sediments on the inner continental shelf off the Keum River estuary, Korea

Instability of the turbidity maximum in the macrotidal Geum River estuary, western Korea

“…The Geum River estuary has suffered from large-scale coastal developments (i.e., dam, jetty, and channel) since the 1990s. As a result of sediment flux in the estuary, a large part of the bottom has recently been covered by muddy sediments (Kim et al 2006;Lee and Lee 2007), which used to be transported into the Yellow Sea before the construction of the dam (Park et al 1986;Wells and Park 1992). Performing numerical calculations based on historical observations, Kim et al (2006) concluded that the sedimentation has been accelerated because of both the decrease of current velocity and dominance of flood tide particularly in the upper estuary owing to the dam.…”

“…The Geum River is one of the macrotidal rivers flowing into the Yellow Sea. Although it used to transport a large amount of suspended solids from the catchment to the continental shelf every year (Park et al 1986;Wells and Park 1992), suspended solids from the sea as well as the catchment were deposited within the estuary after the construction of a tide barrier near the river mouth in 1994 (Kim et al 2006;Lee and Lee 2007). In addition, jetties were constructed and channels were dredged in the 1990s.…”

Instability of the turbidity maximum in the macrotidal Geum River estuary, western Korea

“…The Geum River estuary has suffered from large-scale coastal developments (i.e., dam, jetty, and channel) since the 1990s. As a result of sediment flux in the estuary, a large part of the bottom has recently been covered by muddy sediments (Kim et al 2006;Lee and Lee 2007), which used to be transported into the Yellow Sea before the construction of the dam (Park et al 1986;Wells and Park 1992). Performing numerical calculations based on historical observations, Kim et al (2006) concluded that the sedimentation has been accelerated because of both the decrease of current velocity and dominance of flood tide particularly in the upper estuary owing to the dam.…”

“…The Geum River is one of the macrotidal rivers flowing into the Yellow Sea. Although it used to transport a large amount of suspended solids from the catchment to the continental shelf every year (Park et al 1986;Wells and Park 1992), suspended solids from the sea as well as the catchment were deposited within the estuary after the construction of a tide barrier near the river mouth in 1994 (Kim et al 2006;Lee and Lee 2007). In addition, jetties were constructed and channels were dredged in the 1990s.…”

Clay minerals from tidal flat sediments at Youngjong Island, Korea, as a potential indicator of sea-level change

“…Peninsula (Khim, 1988;Park & Khim, 1990). Therefore, the relative proportion of smectite could be used as a prime indicator of the origin of the sediments in the Yellow Sea.…”

“…Considering the more or less fixed content of kaolinite, which is relatively stable in comparison with the other clay minerals, the amount of transported and deposited sediments originating from the Han River must have been consistent. Moreover, these sediments have abundant chlorite (16.8%, Park & Khim, 1990). On the basis of the relative contents of chlorite throughout the whole of the borehole samples taken from the tidal-flat sediments of Youngjong Island, four sedimentary units are clearly separated (Fig.…”

Instability of the turbidity maximum in the macrotidal Geum River estuary, western Korea

“…The Geum River estuary has suffered from large-scale coastal developments (i.e., dam, jetty, and channel) since the 1990s. As a result of sediment flux in the estuary, a large part of the bottom has recently been covered by muddy sediments (Kim et al 2006;Lee and Lee 2007), which used to be transported into the Yellow Sea before the construction of the dam (Park et al 1986;Wells and Park 1992). Performing numerical calculations based on historical observations, Kim et al (2006) concluded that the sedimentation has been accelerated because of both the decrease of current velocity and dominance of flood tide particularly in the upper estuary owing to the dam.…”

“…The Geum River is one of the macrotidal rivers flowing into the Yellow Sea. Although it used to transport a large amount of suspended solids from the catchment to the continental shelf every year (Park et al 1986;Wells and Park 1992), suspended solids from the sea as well as the catchment were deposited within the estuary after the construction of a tide barrier near the river mouth in 1994 (Kim et al 2006;Lee and Lee 2007). In addition, jetties were constructed and channels were dredged in the 1990s.…”

Clay minerals from tidal flat sediments at Youngjong Island, Korea, as a potential indicator of sea-level change

“…Peninsula (Khim, 1988;Park & Khim, 1990). Therefore, the relative proportion of smectite could be used as a prime indicator of the origin of the sediments in the Yellow Sea.…”

“…Considering the more or less fixed content of kaolinite, which is relatively stable in comparison with the other clay minerals, the amount of transported and deposited sediments originating from the Han River must have been consistent. Moreover, these sediments have abundant chlorite (16.8%, Park & Khim, 1990). On the basis of the relative contents of chlorite throughout the whole of the borehole samples taken from the tidal-flat sediments of Youngjong Island, four sedimentary units are clearly separated (Fig.…”

Instability of the turbidity maximum in the macrotidal Geum River estuary, western Korea

“…The Geum River estuary has suffered from large-scale coastal developments (i.e., dam, jetty, and channel) since the 1990s. As a result of sediment flux in the estuary, a large part of the bottom has recently been covered by muddy sediments (Kim et al 2006;Lee and Lee 2007), which used to be transported into the Yellow Sea before the construction of the dam (Park et al 1986;Wells and Park 1992). Performing numerical calculations based on historical observations, Kim et al (2006) concluded that the sedimentation has been accelerated because of both the decrease of current velocity and dominance of flood tide particularly in the upper estuary owing to the dam.…”

“…The Geum River is one of the macrotidal rivers flowing into the Yellow Sea. Although it used to transport a large amount of suspended solids from the catchment to the continental shelf every year (Park et al 1986;Wells and Park 1992), suspended solids from the sea as well as the catchment were deposited within the estuary after the construction of a tide barrier near the river mouth in 1994 (Kim et al 2006;Lee and Lee 2007). In addition, jetties were constructed and channels were dredged in the 1990s.…”

Clay minerals from tidal flat sediments at Youngjong Island, Korea, as a potential indicator of sea-level change

“…Peninsula (Khim, 1988;Park & Khim, 1990). Therefore, the relative proportion of smectite could be used as a prime indicator of the origin of the sediments in the Yellow Sea.…”

“…Considering the more or less fixed content of kaolinite, which is relatively stable in comparison with the other clay minerals, the amount of transported and deposited sediments originating from the Han River must have been consistent. Moreover, these sediments have abundant chlorite (16.8%, Park & Khim, 1990). On the basis of the relative contents of chlorite throughout the whole of the borehole samples taken from the tidal-flat sediments of Youngjong Island, four sedimentary units are clearly separated (Fig.…”