Traces of Tsunami Preserved in Inter-Tidal Lacustrine and Marsh Deposits: Some Examples from Northeast Japan

Minoura, Koji; Nakaya, Shyu

doi:10.1086/629488

Cited by 322 publications

(167 citation statements)

References 2 publications

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“…The formation of cracks was noted during the earthquake of the year 1627 at several localities near the epicentre, affecting the alluvial deposits and sands of the Fortore River lower valley and coastal plain (Molin and Margottini, 1981). These marks are similar to those reported following the Japan Sea earthquake and tsunami of 26 May 1983 (Minoura and Nakaya, 1991). Here, cracks that formed in the beaches and dunes separating Lake Jusan from the Japan Sea, allowed tsunami to rush into the back barrier area.…”

Section: Discussionsupporting

confidence: 85%

“…Andrade (1992) Further data come from reports in regions recently struck by tsunamis. Detailed observations of the 26 May 1983 tsunami that impacted the coast of northeast Japan are reported by Minoura and Nakaya (1991). Incoming and outgoing tsunami waves eroded large volumes of beach and dune sands which finally accumulated in the shoreface region forming submarine bars.…”

Section: The Geomorphological Impact Of Tsunamis On Coastal Zonementioning

confidence: 99%

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Impact of historical tsunamis on a sandy coastal barrier: an example from the northern Gargano coast, southern Italy

Gianfreda¹,

Mastronuzzi

Sansò

2001

Nat. Hazards Earth Syst. Sci.

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Abstract. The Lesina coastal barrier is characterized by the presence of three wide washover fans. They were formed by three distinct tsunamis which struck the northern coast of the Gargano Promontory (Apulia, Italy) during historical times. A model for their formation is presented. It takes into account the geomorphological data collected and some reports about the effect of recent tsunamis on coastal barriers and beaches. Washover fans were produced by tsunami waves which ran through coseismic cracks developed on dune ridges shaping a narrow, straight and relatively deep trench which constitutes the fan throat. Moreover, each tsunami event most likely caused severe erosion of the coastal barrier, shaping erosive grooves across the dune ridges, causing beach cliffs and causing the nourishment of submarine offshore bars. After the tsunami, a phase of coastal barrier recovery began, forming new dune ridges and closing washover fan throats. Morphological, archeological and radiometric data indicate a pre-Roman age for the oldest event, which was dated at 2430 years BP. The second tsunami struck the Lesina coastal barrier with similar magnitude 1550 years BP; it was caused by the strong earthquake that occurred at Gargano Promontory in the year 493 AD as reported by a medieval sacred legend. The smallest and more recent fan formed following the tsunami that hit the northern coast of Gargano on 30 July 1627.

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Section: Discussionsupporting

confidence: 85%

Section: The Geomorphological Impact Of Tsunamis On Coastal Zonementioning

confidence: 99%

Impact of historical tsunamis on a sandy coastal barrier: an example from the northern Gargano coast, southern Italy

Gianfreda¹,

Mastronuzzi

Sansò

2001

Nat. Hazards Earth Syst. Sci.

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“…Moreover, recent research has found evidence that a giant tsunami called the Jyogan Earthquake Tsunami occurred in 869 (Minoura and Nakaya, 1991). It is estimated that the earthquake's magnitude was about M8, and that the tsunami penetrated 2 to 4 km inland (Sugawara et al 2001;Satake et al 2008).…”

Section: Tsunami and The Accident At The Fukushima Nuclear Power Planmentioning

confidence: 99%

Damage from the Great East Japan Earthquake and Tsunami - A quick report

Mimura

Yasuhara

Kawagoe

et al. 2011

Mitig Adapt Strateg Glob Change

271

115

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The Tohoku region, Northeast Japan, was hit by a gigantic earthquake which occurred in the Pacific close to Tohoku, and subsequently by a giant tsunami. These hazards have caused huge damage on the eastern coast Japan. The earthquake's magnitude was 9.0, the strongest ever recorded in Japan. The tsunami was also historical as its run-up height reached over 39 m. As of early May, 2011, over 24 thousand people were reported as dead or missing. Moreover, serious accidents at the Fukushima Nuclear Power Plants No.1 were caused by the effects of the tsunami. Therefore, the damage faced by Japanese people can be seen as a giant composite disaster. Although Japan, and the northeast of Japan in particular, has over a long time period increased its preparedness against earthquakes and tsunamis, huge damage still occurred. This paper considers why this tragedy occurred, and what unrecognized factors contributed to the high vulnerability of the area. To assist in answering such questions, this paper presents a timely report of the features of the earthquake and tsunami, the damage they caused, and the early efforts for recovery and reconstruction.

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“…If they remain dry and are exposed to aeolian onshore processes they can form an extensive, region-wide parabolic dune system . The overall geomorphological assemblage of dune pedestals and multiple breaches is not new, and was modelled through morphological descriptions by Minoura and Nakaya (1991). However, the fate of landward material has rarely been considered .…”

Section: Features Of a Tsunami Geomorphologymentioning

confidence: 99%

The tsunami geomorphology of coastal dunes

Goff

Lane

Arnold

2009

Nat. Hazards Earth Syst. Sci.

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Abstract. An examination of the coastal geomorphology of bays along the Otago coastline, SE New Zealand, has identified a geomorphology consistent with tsunami inundation. A tsunami geomorphology consisting of a number of elements including dune pedestals, hummocky topography, parabolic dune systems, and post-tsunami features resulting from changes to the nearshore sediment budget is discussed. The most prominent features at Blueskin Bay are eroded pedestals although it is speculated that hummocky topography may be present in the bay. Tsunami geomorphology at Long Beach is more comprehensive with a marked association between pedestals and a hummocky topography. A full suite of potential geomorphological features however, is not present at either site. The type of features formed by a tsunami, and the ability to detect and interpret a tsunami geomorphology, hinges on the interaction between five key variables; sand availability, embayment type, nature of the coast, accumulation space, and landward environmental conditions. An appreciation of the geomorphic setting and history of a coast is therefore of fundamental importance when identifying what to look for and where to look for tsunami evidence. It is also important to realise that these features can also be formed by other processes.

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Traces of Tsunami Preserved in Inter-Tidal Lacustrine and Marsh Deposits: Some Examples from Northeast Japan

Cited by 322 publications

References 2 publications

Impact of historical tsunamis on a sandy coastal barrier: an example from the northern Gargano coast, southern Italy

Impact of historical tsunamis on a sandy coastal barrier: an example from the northern Gargano coast, southern Italy

Damage from the Great East Japan Earthquake and Tsunami - A quick report

The tsunami geomorphology of coastal dunes

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