Late Quaternary inner shelf deposits in response to late Pleistocene–Holocene sea level changes: Nakdong River, SE Korea

Yoo, Dong Geun; Kim, Seong P.; Chang, Tae Soo; Kong, Gee-Soo; Kang, Nyeon‐Keon; Kwon, Yongchai; Nam, Sang Heon; Park, Soo C.

doi:10.1016/j.quaint.2014.02.004

Cited by 37 publications

(13 citation statements)

References 37 publications

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“…More recently researchers have started to examine the response of open coastlines to these same drivers, with particular focus on the response to the Late Pleistocene to Holocene transgression (e.g. Zecchin et al, 2008;Yoo et al, 2014;Mendoza et al, 2014). However, these latter studies have focused exclusively on the current offshore record with relatively few attempts being made to tie together the terrestrial and littoral components of the coastal zone (Bersezio et al, 2007;Stoker et al, 2009;Peterson et al, 2010;Twichell et al, 2010;Vanderburgh et al, 2010;Anderson et al, 2014;Cawthra et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Late-Pleistocene evolution of the continental shelf of central Israel, a case study from Hadera

et al. 2016

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Section: Introductionmentioning

confidence: 99%

Late-Pleistocene evolution of the continental shelf of central Israel, a case study from Hadera

et al. 2016

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“…The delta sediments was deposited from the Tertiary Period of the Cenozoic Era, and they were also eroded during the time of the deposition due to sea-level change (Yoo et al 2014). Thus, it is estimated that most of the sediments was deposited in the Quaternary period.…”

Section: Hydrogeological Settingmentioning

confidence: 99%

The Characteristics of Hydrogeological Parameters of Unconsolidated Sediments in the Nakdong River Delta of Busan City, Korea

Khakimov¹,

Chung²,

Senapathi³

et al. 2017

Journal of Soil and Groundwater Environment

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This study dealt with the characteristics and the interrelations of hydrogeological parameters such as hydraulic conductivity, dispersivity and effective porosity of unconsolidated sediments for providing the basic data necessary for the planning of the management and preservation of groundwater quality in the Nakdong River Delta of Busan City, Korea. Groundwater quality in this area has been deteriorated due to seawater intrusion, agricultural fertilizer and pesticide, industrial wastewater, and contaminated river water. The physical properties (grain size distribution, sediment type, sorting) and aquifer parameters (hydraulic conductivity, effective porosity, longitudinal dispersivity) were determined from grain size analysis, laboratory permeability test and column tracer test. Among 36 samples, there were 18 Sand (S), 7 Gravelly Sand (gS), 5 Silty Sand (zS), 5 Muddy Sand (mS), and 1 Sandy Silt (sZ). Hydraulic conductivity was determined through a falling head test, and ranged from 9.2 × 10 −5 to 2.9 × 10 −2 cm/sec (0.08 to 25.6 m/day). From breakthrough curves, dispersivity was calculated to be 0.35~3.92 cm. Also, effective porosity and average linear velocity were obtained through the column tracer test, and their values were 0.04~0.46 and 1.06E-04~6.49E-02 cm/sec, respectively. Statistical methods were used to understand the interrelations among aquifer parameters of hydraulic conductivity, effective porosity and dispersivity. The relation between dispersivity and hydraulic conductivity or effective porosity considered the sample length, because dispersivity was affected by experimental scale. The relations between dispersivity and hydraulic conductivity or effective porosity were all in inverse proportion for all long and short samples. The reason was because dispersivity was in inverse proportion to the groundwater velocity in case of steady hydrodynamic dispersion coefficient, and groundwater velocity was in proportion to the hydraulic conductivity or effective porosity. This study also elucidated that longitudinal dispersivity was dependent on the scale of column tracer test, and all hydrogeological parameters were low to high values due to the sand quantity of sediments. It is expected that the hydrogeological parameter data of sediments will be very useful for the planning of groundwater management and preservation in the Nakdong River Delta of Busan City, Korea.

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“…The total discharge of suspended fine-grained sediment to the neighboring sea has been calculated at~5-10 Mt/year (Kim et al 1986;Park et al 1999). The maximum thickness of the PMDs is~30 m with a southward (offshore)-thinning sedimentary wedge, whereas that of the DMDs ranges from 50 to 60 m with a northeastward (offshore)-thinning sedimentary wedge (Park et al 1999;Yoo et al 2014). The DMDs pinch out seaward at~123 m water depth on the inner continental shelf, and are bounded landward at~25 m water depth .…”

Section: Geological Settingmentioning

confidence: 99%

Late Holocene distal mud deposits off the Nakdong delta, SE Korea: evidence for shore-parallel sediment transport in a current-dominated setting

et al. 2015

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The distal mud deposits (DMDs) off the Nakdong delta represent a subaqueous delta on the inner continental shelf aligned parallel to the southeast coast of Korea and displaying a clinoform geometry. Hydrographically, the coast is characterized by a micro-tidal regime, the strong Korean Coastal Current (KCC) and the East Korean Warm Current (EKWC). Age models and sedimentary facies related to the clinoform geometries are based on high-resolution chirp subbottom profile data and have provided information on shore-parallel sediment transport and accumulation during the late Holocene sea-level highstand. The highest sedimentation rates (6.19-9.17 cm/year) produced steep foresets in the central DMDs at water depths of 35-50 m. Here, vertical burrows are repeatedly truncated by laminated mud packages displaying erosional surfaces. This region represents the main depocenter of the Nakdong subaqueous delta. The topset sediments of the southern DMD at~40 m water depth closer to the river mouth show relatively low sedimentation rates (0.01-0.12 cm/year). Here, the muds have a predominantly mottled character. Similarly, the foreset sediments of the northern DMD at~71-80 m water depth with sedimentation rates of 0.10-2.03 cm/year are also predominantly characterized by mottled muds. The spatial dispersal pattern of the DMDs is consistent with the coast-parallel front between the KCC and EKWC along the southeast Korean coast. In addition, the depocenter of the Nakdong subaqueous delta clinoform is affected by the nearbed turbulence generated by episodic storm events.

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Late Quaternary inner shelf deposits in response to late Pleistocene–Holocene sea level changes: Nakdong River, SE Korea

Cited by 37 publications

References 37 publications

Late-Pleistocene evolution of the continental shelf of central Israel, a case study from Hadera

Late-Pleistocene evolution of the continental shelf of central Israel, a case study from Hadera

The Characteristics of Hydrogeological Parameters of Unconsolidated Sediments in the Nakdong River Delta of Busan City, Korea

Late Holocene distal mud deposits off the Nakdong delta, SE Korea: evidence for shore-parallel sediment transport in a current-dominated setting

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