Paleohydrology and sedimentology of a post–1.8 ka breakout flood from intracaldera Lake Taupo, North Island, New Zealand

Manville, V.; White, James D. L.; Houghton, B. F.; Wilson, C. J. N.

doi:10.1130/0016-7606(1999)111<1435:pasoap>2.3.co;2

Cited by 86 publications

(75 citation statements)

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“…(Alho et al, 2005;Carrivick et al, 2010;Carrivick and Rushmer, 2006;Manville et al, 1999). Such high-magnitude sudden onset floods generally comprise an advancing intense kinematic water wave which can induce considerable erosion and sediment loads, thereby causing rapid geomorphic change.…”

Section: Introductionmentioning

confidence: 99%

Multiple effects of sediment transport and geomorphic processes within flood events: Modelling and understanding

Guan

Wright

Sleigh

2015

International Journal of Sediment Research

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Flood events can induce considerable sediment transport which in turn influences flow dynamics. This study investigates the multiple effects of sediment transport in floods through modelling a series of hydraulic scenarios, including small-scale experimental cases and a full-scale glacial outburst flood. A non-uniform, layer-based morphodynamic model is presented which is composed of a combination of three modules: a hydrodynamic model governed by the two-dimensional shallow water equations involving sediment effects; a sediment transport model controlling the mass conservation of sediment; and a bed deformation model for updating the bed elevation. The model is solved by a second-order Godunov-type numerical scheme. Through the modelling of the selected sediment-laden flow events, the interactions of flow and sediment transport and geomorphic processes within flood events are elucidated. It is found that the inclusion of sediment transport increases peak flow discharge, water level and water depth in dam-break flows over a flat bed. For a partial dam breach, sediment material has a blockage effect on the flood dynamics. In comparison with the 'sudden collapse' of a dam, a gradual dam breach significantly delays the arrival time of peak flow, and the flow hydrograph is changed similarly. Considerable bed erosion and deposition occur within the rapid outburst flood, which scours the river channel severely. It is noted that the flood propagation is accelerated after the incorporation of sediment transport, and the water level in most areas of the channel is reduced.

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Section: Introductionmentioning

confidence: 99%

Multiple effects of sediment transport and geomorphic processes within flood events: Modelling and understanding

Guan

Wright

Sleigh

2015

International Journal of Sediment Research

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“…의 최저점으로 물이 방출 될 수문학적인 흐름의 저수지 에 해당된다 (Waythomas et al, 1996;Manville et al, 1999;Bornas et al, 2003;Manville and Wilson, 2004;Stelling et al, 2005;Massey et al, 2010;Kataoka, 2011). …”

Section: 칼데라 호수는 화산폭발 유무에 관계없이 외륜산(Rim)unclassified

Scenario-based Flood Disaster Simulation of the Rim Collapse of the Cheon-ji Caldera Lake, Mt. Baekdusan

Lee¹,

Kim²,

Choi³

et al. 2014

The Journal of Engineering Geology

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Volcanic eruptions alone may lead to serious natural disasters, but the associated release of water from a caldera lake may be equally damaging. There is both historical and geological evidence of the past eruptions of Mt. Baekdusan, and the volcano, which has not erupted for over 100 years, has recently shown signs of reawakening. Action is required if we are to limit the social, political, cultural, and economic damage of any future eruption. This study aims to identify the area that would be inundated following a volcanic flood from the Cheon-Ji caldera lake that lies within Mt. Baekdusan. A scenario-based numerical analysis was performed to generate a flood hydrograph, and the parameters required were selected following a consideration of historical records from other volcanoes. The amount of water at the outer rim as a function of time was used as an upper boundary condition for the downstream routing process for a period of 10 days. Data from the USGS were used to generate a DEM with a resolution of 100 m, and remotely sensed satellite data from the moderate-resolution imaging spectroradiometer (MODIS) were used to show land cover and use. The simulation was generated using the software FLO-2D and was superposed on the remotely sensed map. The results show that the inundation area would cover about 80% of the urban area near Erdaobaihezhen assuming a 10 m/hr collapse rate, and 98% of the area would be flooded assuming a 100 m/hr collapse rate.

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“…The total eruptive bulk (loose) volume for the Taupo eruptives has been estimated at c. Following the Taupo eruption, Lake Taupo refilled and reached a higher level than today's, as is evident from the semi-continuous, wave-cut bench and highstand shoreline deposits (Manville et al 1999;Manville et al 2007) [22,24]. Dramatic, sudden failure of a pumiceous pyroclastic dam led to the release of a peak discharge of 20,00040,000 m Pre-existing sediments were cannibalised in part and transported as well as the mainly pumiceous materials.…”

Section: Taupo Eruption Its Products and Impactsmentioning

confidence: 99%

“…When it collapsed, about twenty cubic kilometres of water was suddenly released down the Waikato River, an equivalent volume to that of the Mississippi River in flood (Manville et al 1999) [22].…”

Section: The Taupo Eruptionmentioning

confidence: 99%

A Dramatic Landscape

Lowe

King

2015

The Drama of Conservation

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This chapter introduces the story of Pureora Forest Park (PFP), in the central North Island, New Zealand, by describing the extremely violent Taupo eruption of c. AD 232 and its consequences for the surrounding forests and mountains. It gives a broad-scale local geological history, detailing the origins of some important local sedimentary rocks and landforms with a bearing on the story, including limestone caverns and coal deposits. It describes the location of the future PFP on the western edge of the Taupo Volcanic Zone, and how the history of volcanic activity, together with erosion, have determined much of the character of its landscape, the radial drainage pattern and deep entrenchment of its rivers, the distribution of its vegetation, and its long isolation from human access and permanent settlement. Contents

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Paleohydrology and sedimentology of a post–1.8 ka breakout flood from intracaldera Lake Taupo, North Island, New Zealand

Cited by 86 publications

References 0 publications

Multiple effects of sediment transport and geomorphic processes within flood events: Modelling and understanding

Multiple effects of sediment transport and geomorphic processes within flood events: Modelling and understanding

Scenario-based Flood Disaster Simulation of the Rim Collapse of the Cheon-ji Caldera Lake, Mt. Baekdusan

A Dramatic Landscape

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