Tsunami deposits in Holocene bay mud in southern Kanto region, Pacific coast of central Japan

Fujiwara, Osamu; Masuda, Fujio; Sakai, Tetsuya; Irizuki, Toshiaki; Fuse, Keisuke

doi:10.1016/s0037-0738(00)00073-7

Cited by 125 publications

(70 citation statements)

References 18 publications

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“…10). Ero sional con tact with subsurface de pos its is one of di ag nos tic fea tures of tsu na mis (Dawson, 1994;Clague et al, 2000;Fujiwara et al, 2000;Goff et al, 2000;Peters et al, 2001;Dominey-Howes et al, 2006;Dawson and Stew ard, 2007;Dominey-Howes, 2007;Mor ton et al, 2007;Pe ters et al, 2007;Mamo et al, 2009;Engel and Brüc kner, 2011).…”

Section: Characteristics Of the Tsunami Layermentioning

confidence: 99%

“…Tsu nami de pos its found at dif fer ent sites around the world con tain var i ous biogenic rem nants, such as ma rine, brack ish and fresh wa ter shells pre served in their en tirety or in the form of de bris (Moore and Moore, 1988;Hindson et al, 1996;Benson et al, 1997;Witter, 1999;Clague et al, 2000;Fujiwara et al, 2000;Goff et al, 2000Goff et al, , 2001Goff et al, , 2006Goff et al, , 2010Hutchison et al, 2000;Bryant and Nott, 2001;Dominey-Howes et al, 2006;Dominey-Howes, 2007;Pe ters et al, 2007;Mamo et al, 2009;Engel and Brückner, 2011; Pe ter son and Cruikshank, 2011), valves of ma rine and brack ish di a toms and other microfossils (Clague et al, 1994aHemphill-Haley, 1996;Witter, 1999;Dawson and Shi, 2000 Clague and Bobrowsky, 1994a, b;Clague et al, 1994;Witter, 1999;Domniney-Howes et al, 2006;Pe ters et al, 2007;Goff et al, 2010). The tsu nami de pos its found at Rowy are also rich in a diverse and quan ti ta tively large ad mix ture of biogenic in con tent de rived from ma rine, brack ish and fresh wa ter en vi ron ments as well as from the ter res trial en vi ron ment.…”

Section: Allochthonous Biogenic Materials In the Tsunami Depositsmentioning

confidence: 99%

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The first geological record of a palaeotsunami on the southern coast of the Baltic Sea, Poland

Rotnicki

Rotnicka

Goslar

et al. 2016

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Tsu nami de pos its have not pre vi ously been re corded along the south ern coast of the Bal tic Sea. The re sults of pres ent research pro vide ev i dence of high-en ergy event lay ers that oc cur on the bot tom of two hemi spher i cal hol lows cut into glaciolimnic silt and glaciofluvial sand and gravel of Late Weichselian age. The event de pos its are rep re sented by poorly sorted ma rine sand with ad mix tures of peb bles and allochthonous biogenic de tri tus: ma rine, brack ish and oc ca sion ally fresh wa ter shells and shell de bris of bi valves and snails, plant macrofossils from the nearshore zone, shreds and lumps of peaty ma te rial, gyttja and organogenic silt, lumps of char coal, wood pieces and tree branches and trunks. All these fea tures are com monly con sid ered in dic a tive of tsu na mis. The age of the biogenic de tri tus found in the tsu nami layer ranges from 6,630 to 10,390 cal. yr BP, whereas the old est gyttja cov er ing the event lay ers is 6,600 cal. yr BP old. This means that the tsunami oc curred be tween 6,600 and 6,630 cal. yr BP. Var i ous causes of the tsu nami event are con sid ered, in clud ing the impact of me te or ites within the coastal plain and the lit to ral zone of the south ern Bal tic Sea.

show abstract

Section: Characteristics Of the Tsunami Layermentioning

confidence: 99%

Section: Allochthonous Biogenic Materials In the Tsunami Depositsmentioning

confidence: 99%

The first geological record of a palaeotsunami on the southern coast of the Baltic Sea, Poland

Rotnicki

Rotnicka

Goslar

et al. 2016

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show abstract

“…There is a high potential that tsunami deposits are preserved in inner bays where ocean wave influence is weak and thus topography changes due to sediment transports by the ocean waves were little after tsunamis (Fujiwara et al, 2000;Goto et al, 2011). Our results show that depositions induced by tsunamis would be occurred at areas where long-duration sustaining vortices are generated and strong return flows are not occurred.…”

Section: Discussionmentioning

confidence: 69%

Three-dimensional sediment transport processes on tsunami-induced topography changes in a harbor

2012

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A three-dimensional hydrostatic numerical simulation on tsunami-induced topography changes near a harbor is carried out, and sediment transport processes on a significant local deposition near the center of the harbor caused by a tsunami, which was observed in an early experimental study, are investigated. This local deposition has not been well predicted by a vertically averaged hydrodynamic model. The results show that velocities, water levels and topography changes in the harbor predicted in this study agree with the experimental data. The local deposition has relations with a vortex generated in the harbor when the tsunami attacks the harbor. At areas near the vortex center, a secondary flow of the first kind develops, and it plays the role of transporting suspended sediment to the vortex center, located near the center of the harbor, and causes the local deposition there. In order to predict deposition areas with high accuracy, the secondary flow effects should be incorporated in prediction methods of tsunami-induced topography change.

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“…Tsunamis cause seawater to flood onto land, creating distinctive horizontally widespread sandy deposits. Tsunami sediments from Japan are the typical sediments discussed for the historical tsunami events and the geological evidence (e.g., Minoura et al, 1996;Fujiwara et al, 2000;Sawai, 2002;Fujino et al, 2006). Tsunami waves transport sandy sediments from offshore areas and the beach and deposit sediments on the inundated land surface.…”

Section: Introductionmentioning

confidence: 99%

Grain-Size and Thin Section Characteristics of Tsunami Sediments from Thai-Andaman Coast, Thailand

Wagner¹,

Srisutam²

2011

The Tsunami Threat - Research and Technology

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Tsunami deposits in Holocene bay mud in southern Kanto region, Pacific coast of central Japan

Cited by 125 publications

References 18 publications

The first geological record of a palaeotsunami on the southern coast of the Baltic Sea, Poland

The first geological record of a palaeotsunami on the southern coast of the Baltic Sea, Poland

Three-dimensional sediment transport processes on tsunami-induced topography changes in a harbor

Grain-Size and Thin Section Characteristics of Tsunami Sediments from Thai-Andaman Coast, Thailand

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