Catastrophic events (hurricanes, tsunami and others) and their sedimentary records: Introductory notes and new concepts for shallow water deposits

Jan, F.G. Bourrouilh-Le; Beck, Christian; Gorsline, Donn S.

doi:10.1016/j.sedgeo.2006.12.007

Cited by 29 publications

(17 citation statements)

References 84 publications

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“…Since they are natural disturbances that have repeatedly affected coastal ecosystems over long time scales, tsunamis may play a role in the formation of coastal communities [6], [7]. However, their ecological impacts are not, as yet, well understood.…”

Section: Introductionmentioning

confidence: 99%

Immediate Ecological Impacts of the 2011 Tohoku Earthquake Tsunami on Intertidal Flat Communities

et al. 2013

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Following the Great East Japan Earthquake in 2011, a large tsunami developed and struck the Pacific coast of eastern Japan. To assess the immediate impacts of the tsunami on coastal communities, changes in taxon composition and richness of macrobenthic animals before and after the tsunami were examined at nine intertidal flats in Sendai Bay and the Sanriku Ria coast. The results showed that 30–80% of taxa indigenously inhabiting intertidal flats disappeared after the tsunami. Among animal types, endobenthic and sessile epibenthic animals were more vulnerable to the tsunami than mobile epibenthic animals like shore crabs and snails. For all the intertidal flats examined, animals that were originally dwellers in lower tidal zones and not recorded before the tsunami were also found right after the tsunami, indicating that the tsunami not only took away many benthic taxa from the intertidal flats but also brought in some taxa from elsewhere. However, overall changes in taxon community composition were greater for intertidal flats that experienced larger inundation heights. These results showed that the ecological impacts of the tsunami were proportional to the physical impacts as gauged by wave height and that mobile epibenthic animals were less vulnerable to the tsunami.

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Section: Introductionmentioning

confidence: 99%

Immediate Ecological Impacts of the 2011 Tohoku Earthquake Tsunami on Intertidal Flat Communities

et al. 2013

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“…Unluckily, not always the presence of these unusual landforms find the agreement of the scientist concerning their shaping event; the finding of boulders still pose the question: are they effect of a paleo-storm or a paleo-tsunami impact? On the other hand, the fact that the reply is not absolute, is testified by recent study in which different Authors have evidenced that storms and tsunami can generate phenomena of morphologic convergence in functions of the local coastal features Williams & Hall, 2004;Hall et al, 2006, Mastronuzzi et al, 2006Bourrouilh-Le Jan et al, 2007;Scheffers, 2002aScheffers, , 2002bScheffers, , 2004. So storms and tsunami can scatter boulders and mega boulders inland and accumulate them in the emerged coastal areas in function of the dissipation of their energy in function of the coastal bathymetry and topography.…”

Section: Morphological Effect Of Past Tsunamimentioning

confidence: 99%

Determination of Tsunami Inundation Model Using Terrestrial Laser Scanner Techniques

Mastronuzzi¹,

Pignatelli²

2011

The Tsunami Threat - Research and Technology

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“…Two contradictory hypotheses are currently used (Dott [8] and Dott [9]): (i) on the one hand, some authors assume that sedimentary rocks are the result of a continuous and homogenous process through time; (ii) on the other hand, others maintain that only a few events, exceptional in intensity and duration, have a significant impact on the formation and preservation of sedimentary deposits (Bourrouilh-Le Jan et al [5]). …”

Section: Only During Exceptional Eventsmentioning

confidence: 99%

3-D process modelling of ancient storm-dominated deposits by an event-based approach

Laigle¹,

Joseph²,

Marsily³

et al. 2010

WIT Transactions on Ecology and the Environment

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The characterization of porosity and permeability heterogeneities in sedimentary rocks is of primary importance for the understanding of fluid flows. These heterogeneities are directly linked to the nature and geometry of the sediment deposits which were created during a time span ranging from tens to hundreds of thousands of years. An ability to model numerically the physical processes that explain the present-day distribution and architecture of reservoir rocks is a major advantage. A numerical model was developed to simulate erosion, transport and deposition of sediments along marine clastic coasts, from the foreshore to the offshore environment. It is based on the assumption that the preserved heterogeneities are mainly the result of the succession of fair-weather periods and exceptional events (storms and/or fluvial floods). This model is designed for 3-D characterisation of deposits generated by storms. The transport module accounts for the impact of two unidirectional currents: 1/ a strong return current originated by the coastal surge due to water pushed by the wind and 2/ a littoral drift current caused by an energy transfer during wave surfing near the shore. These currents interact at the sea bottom with wave-induced oscillatory currents and are responsible for sea floor erosion and particle matter mobilisation. Between storm events, fair-weather deposits are modelled through an average deposition process. After a synthetic case, the storm modelling module is calibrated to a present-day environment in the Gulf of Lions (France). By allowing us to focus on heterogeneity distribution, this innovative approach gives promising prospects to help in assigning to geological models realistic petrophysical properties.

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Catastrophic events (hurricanes, tsunami and others) and their sedimentary records: Introductory notes and new concepts for shallow water deposits

Cited by 29 publications

References 84 publications

Immediate Ecological Impacts of the 2011 Tohoku Earthquake Tsunami on Intertidal Flat Communities

Immediate Ecological Impacts of the 2011 Tohoku Earthquake Tsunami on Intertidal Flat Communities

Determination of Tsunami Inundation Model Using Terrestrial Laser Scanner Techniques

3-D process modelling of ancient storm-dominated deposits by an event-based approach

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