Testing the numerical models for boulder transport through high energy marine wave event: An example from southern Saurashtra, western India

Gandhi, Drasti; Chavare, Kushal; Prizomwala, S. P.; Bhatt, Nilesh; Bhatt, Nishith Y.; Mohan, Kapil; Rastogi, B. K.

doi:10.1016/j.quaint.2016.05.021

Cited by 13 publications

(6 citation statements)

References 38 publications

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“…Bryant and Haslett's (2007) field evidence collected to test the hypothesis included analysis of erosional coastal Since 2007, a growing number of studies have analysed boulder deposits to investigate whether storm or tsunami waves have contributed to the evolution of coastlines around the World (e.g., Hansom et al 2008;Spiske et al 2008;Goto et al 2009Goto et al , 2010Barbano et al 2010;Scheffers et al 2009Scheffers et al , 2010Costa et al 2011;Lorang 2011;Paris et al 2011;Erdmann et al 2015Erdmann et al , 2017Watanabe et al 2016;Cox et al 2018;Haslett and Wong 2019a, b;Abad et al 2020). However, some boulder studies have noted shortcomings in Nott's (1997Nott's ( , 2003 hydrodynamic equations (Bourgeois and MacInnes 2010;Switzer and Burston 2010;Gandhi et al 2017;Kennedy et al 2017;Piscitelli et al 2017;Cox et al 2020) and, indeed, we agree that Nott's versions of the equations are outdated and, therefore, should no longer be used. Subsequent studies have, however, further developed the hydrodynamic equations to refine them and to correct errors in previous versions of the equations, such as the work of Nandasena et al (2011), Kain et al (2012) and more recently Haslett and Wong (2019a).…”

Section: [Traduit Par La Redaction]supporting

confidence: 61%

Recalculation of minimum wave heights from coastal boulder deposits in the Bristol Channel and Severn Estuary, UK: implications for understanding the high-magnitude flood event of AD 1607

Haslett

Wong

2021

atgeol

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A high-magnitude coastal flood event catastrophically affected the macrotidal Bristol Channel and Severn Estuary in southwest Great Britain, United Kingdom, on 30th January 1607 causing an estimated 2000 fatalities. Historical and physical evidence has provided a basis for the development of a theory that the flood may have been due to a tsunami rather than a storm. Previous studies have collected field data to test this hypothesis including a dataset of 136 wave-transported boulder clasts that was utilised to estimate minimum wave heights through hydrodynamic equations in 2007, but the dataset has hitherto remained unpublished in full. Since 2007 these equations have undergone refinement and for this paper minimum wave heights were recalculated from boulder measurements using revised hydrodynamic equations and presents the complete dataset for the first time. A recent study claiming that such equations are flawed is considered premature, given ongoing refinements to the equations. The results of the present study indicate that a tsunami 4.2 m high can explain the dislodgement of all boulders measured, equivalent to a storm wave height of 16.9 m, which is considerably greater than observed storm wave heights in the region. An up-channel increase in minimum wave height is also suggested by these data, generally corroborating the 2007 study, which may be due to wave amplification caused by the overall funnel-shape of the embayment. The areas worst affected by the 1607 flood are located in the coastal lowlands of the inner Bristol Channel and Severn Estuary, coinciding with the highest minimum estimated wave heights.

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Section: [Traduit Par La Redaction]supporting

confidence: 61%

Recalculation of minimum wave heights from coastal boulder deposits in the Bristol Channel and Severn Estuary, UK: implications for understanding the high-magnitude flood event of AD 1607

Haslett

Wong

2021

atgeol

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“…Numerous papers mention that the original Nott equations and their descendants contain unrealistic assumptions and that they fail to incorporate relevant environmental variables (e.g., Morton et al, 2006Morton et al, , 2008Goto et al, 2009Goto et al, , 2010Switzer and Burston, 2010;Lorang, 2011;Weiss, 2012;Engel et al, 2016;Terry and Lau, 2018). The equations have been shown to return unreliable results when applied to known storm or tsunami deposits, in particular underestimating storm wave power (e.g., Bourgeois and MacInnes, 2010;Switzer and Burston, 2010;Gandhi et al, 2017;Piscitelli et al, 2017). Despite these cautions, however, the Nott Approach continues to be applied for waveheight hindcasting (e.g., Vacchi et al, 2012;Mottershead et al, 2014;Biolchi et al, 2016;Boulton and Whitworth, 2017;Deguara and Gauci, 2017;Dewey and Ryan, 2017;Pepe et al, 2018;Kennedy et al, 2019;Roig-Munar et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Systematic Review Shows That Work Done by Storm Waves Can Be Misinterpreted as Tsunami-Related Because Commonly Used Hydrodynamic Equations Are Flawed

et al. 2020

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Cox et al. Boulder Deposits and Storm Waves during storms and should therefore be re-evaluated. This is especially important for CBD that have been incorporated into long-term coastal risk assessments, which are compromised if the CBD are misinterpreted. CBD dynamics can be better determined from a combination of detailed field measurements, modeling, and experiments. A clearer understanding of emplacement mechanisms will result in more reliable hazard analysis.

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“…Coastal boulder deposits (CBDs) transported inland, above mean sea level, by unusually large surges and extreme waves, are described along many rocky coasts and have important implications in coastal hazard assessment (e.g., Engel et al, 2016; Gandhi et al, 2017; Goto et al, 2011; Scheffers et al, 2009). Concerning the Caribbean islands, there are some reports containing geological descriptions of CBDs (Engel et al, 2016; Morton et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

On a ~210 t Caribbean coastal boulder: The huracanolito seaward of the ruins of the Bucanero resort, Juragua, Oriente, Cuba

Pedoja,

Dunán‐Avila,

Jara‐Muñoz

et al. 2023

Earth Surf Processes Landf

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Coastal boulder deposits (CBDs), named huracanolitos in Cuba, found along rocky shores, result from storms, tropical cyclones or tsunamis. Despite being important indicators for coastal hazard assessment, determining the mode of emplacement of CBDs (storm/hurricane or tsunami) is not easy. We present, for the first time in English, data about CBDs along the shores of the Cuban Archipelago. More specifically, we focused on a CBD, that is, to our knowledge, the largest one ever described on Cuba Island. Located on a low‐lying coral reef terrace on the SE shore of the island, the reefal limestone CBD is emplaced seaward of the ruins of the Bucanero resort. The resort was built in 1989, endured hurricanes Ivan (2004) and Dennis (2005) and, in October 2012, was destroyed by Hurricane Sandy. As observed on Corona and Landsat satellite images since 1962, the CBD was not moved, neither by hurricane Flora (1963) nor Sandy (2012), both associated with important storm surges and powerful swells. We determined the CBD volume with open‐source structure from motion photogrammetry as 82.6 m3. Then, we estimated from a sample its density as 2550 kg/m3. Finally we calculated its weight as 210.6 tons. We calculated the minimum flow velocity responsible for the emplacement of the CBD 33 ± 2 m inland—6.83 ± 0.54 m/s and 7.26 ± 0.51 m/s. Such flow velocities are compatible with those of both tsunamis and hurricanes. Because of the greater frequency of hurricanes than tsunamis in the area, we propose that a tropical cyclone generated the extreme surge and wave that emplaced the Bucanero CBD. Such CBDs demonstrate that on Cuba's south coast, we can expect marine flooding exceeding the flooding during the major hurricanes of recent decades.

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Testing the numerical models for boulder transport through high energy marine wave event: An example from southern Saurashtra, western India

Cited by 13 publications

References 38 publications

Recalculation of minimum wave heights from coastal boulder deposits in the Bristol Channel and Severn Estuary, UK: implications for understanding the high-magnitude flood event of AD 1607

Recalculation of minimum wave heights from coastal boulder deposits in the Bristol Channel and Severn Estuary, UK: implications for understanding the high-magnitude flood event of AD 1607

Systematic Review Shows That Work Done by Storm Waves Can Be Misinterpreted as Tsunami-Related Because Commonly Used Hydrodynamic Equations Are Flawed

On a ~210 t Caribbean coastal boulder: The huracanolito seaward of the ruins of the Bucanero resort, Juragua, Oriente, Cuba

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