Morphological changes at Vellar estuary, India—Impact of the December 2004 tsunami

Pari, Y.; Murthy, M.V. Ramana; Kumar, Shravan; Subramanian, B. R.; Ramachandran, S.

doi:10.1016/j.jenvman.2007.01.055

Cited by 51 publications

(29 citation statements)

References 7 publications

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“…Our simulated erosion and deposition depths are quantitatively reasonable even though the hindered settling effects are not considered. This could also be evaluated through the measured data during the post-tsunami field surveys (Gelfenbaum and Jaffe, 2003;Narayana et al, 2007;Srinivasalu et al, 2007;Pari et al, 2008). However, the maximum sediment concentration could reach more than 800 kg/m 3 in several spots during a short period of time; there is a concern that the high suspended sediment concentration may hinder the settling of sediment grains (van Rijn, 2007).…”

Section: Characteristics Of Tsunami Depositsmentioning

confidence: 99%

“…We noticed that the tsunami-induced sediment transport was not considered in all these studies. However, tsunami waves with the height of 5-10 m will be inevitably accompanied by very high flow velocities when they penetrate inland (Imamura et al, 2001;Matsutomi et al, 2006;, which will undoubtedly produce high bed shear stresses and sediment movements over large areas, resulting in beach erosion, scouring around coastal structures, and widespread deposition in inland areas (Gelfenbaum and Jaffe, 2003;Srinivasalu et al, 2007;Pari et al, 2008;Meilianda et al, 2010;Paris et al, 2010). Relative to other tsunami behaviors, sediment transport is one of the poorest understood characteristics as it is almost impossible to conduct detailed real-time measurements during tsunami events.…”

Section: Introductionmentioning

confidence: 99%

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Tsunami-induced coastal change: scenario studies for Painan, West Sumatra, Indonesia

Huang

Qiu

et al. 2012

Earth Planet Sp

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There exists a high probability of a great earthquake rupture along the subduction megathrust under the Mentawai Islands of West Sumatra in the near future. Six rupture models were used to assess the tsunami inundation and the accompanying sediment movement in Painan, West Sumatra, Indonesia. According to a worst scenario, the potential tsunami might hit the coast of Painan about 26 minutes after the rupture and the entire city could be inundated with a maximum inundation depth of about 7 m. Severe erosion may also occur in the near-shore region. Two scenarios, one scenario with a positive leading wave and the other with a negative leading wave, were selected to simulate the tsunami-induced morphological changes. A positive leading wave would cause severe erosion in the shoreline area and a large sandbar in the offshore area adjacent to the shoreline; a small amount of sediment could be deposited in the city area; a negative leading wave could cause moderate erosion in the further offshore area due to the strong retreating wave front, an offshore sandbar could form in the bay area, while no noticeable large area of sand deposit could be found in the city area. The difference in the erosion and deposition patterns between these two scenarios provides very helpful information in the investigation of historical tsunamis through tsunami deposits.

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Section: Characteristics Of Tsunami Depositsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tsunami-induced coastal change: scenario studies for Painan, West Sumatra, Indonesia

Huang

Qiu

et al. 2012

Earth Planet Sp

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“…A number of post-tsunami surveys were carried out along the tsunami hit region in the southeast coast of India 4,[27][28][29][30][31][32][33][34] , mostly using the UNESCO guidelines 35 . A detailed report is available on a tsunami survivor's eyewitness records, beach and hinterland profiles from water line to the maximum inundation limits at select locations, run-up heights, tsunami levels along the buildings, etc.…”

Section: Post-tsunami Surveymentioning

confidence: 99%

Effect of Submarine Canyons on Tsunami Heights, Currents and Run-Up Off the Southeast Coast of India

2016

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“…1). It covers a total area of 4 km 2 (Pari et al 2008) and it is classified as an open type bar-built estuary. Four irrigation channels drain into this estuary.…”

Section: Study Areamentioning

confidence: 99%

Application of wave transformation models for estimation of morphological changes at Vellar estuary, southeast coast of India

Murthy

Pari

2008

Nat Hazards

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Assessment of the wave climate at near coast is vital for estimation of morphological changes, such as growth of sand spit and associated siltation of tidal inlets. Vellar (bar-built) estuary is one of the prominent estuaries along the southeast coast of India, located at 11°30 0 N and 79°46 0 E, less studied in terms of its morphological features. The inlet of Vellar is exposed to high energetic waves, inducing large sediment transport rates and shoreline changes. Local wave characteristics are not accurately defined and the available wave information at near coast is limited (point based observations). In the present study, three decoupled numerical models are employed to derive the monthly nearshore wave climate at Vellar by transforming waves from deep water to nearshore. These models are independently validated with buoy observations in deep water and wave gauge data at nearshore. Based on the nearshore wave data, littoral drift along the coast was estimated and compared with the spit growth at Vellar inlet. The estimated average littoral drift along this coast from February to October is 1.93 9 10 6 m 3 toward north and from November to January it is 1.52 9 10 6 m 3 toward south, resulting in a net northerly drift. Results indicated that increase in the wave energy during the period of July to September is responsible for the maximum growth of the sand spit observed in the field.

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Morphological changes at Vellar estuary, India—Impact of the December 2004 tsunami

Cited by 51 publications

References 7 publications

Tsunami-induced coastal change: scenario studies for Painan, West Sumatra, Indonesia

Tsunami-induced coastal change: scenario studies for Painan, West Sumatra, Indonesia

Effect of Submarine Canyons on Tsunami Heights, Currents and Run-Up Off the Southeast Coast of India

Application of wave transformation models for estimation of morphological changes at Vellar estuary, southeast coast of India

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