Local variation of inundation, sedimentary characteristics, and mineral assemblages of the 2011 Tohoku-oki tsunami on the Misawa coast, Aomori, Japan

Nakamura, Yugo; Nishimura, Yuichi; Putra, Purna Sulastya

doi:10.1016/j.sedgeo.2012.06.003

Cited by 76 publications

(51 citation statements)

References 53 publications

(71 reference statements)

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“…Accepting this hypothesis, the inland tsunami propagation was defined through a run up formula ∝ [70], where "I" is the maximum inland inundation, Ru is the maximum water height calculated by Tinti et al [59] and α is the slope characterizing the coastal zones of the study area. In order to consider the influence of inland morphology on the maximum inland propagation [71][72][73][74], a slope zoning of coastal zone was performed from a detailed Digital Elevation Model (DEM) [75]. Firstly a Boolean map was drawn to point out the area with high spatial probability to be inundated (white zones in Figure 3), and those with slope exceeding 5° that represent topographic barriers against the tsunami inland propagation (dark brown in Figure 3); in fact, since a value of α = 5° and a water elevation of 20 m, deduced for IDA [29], were taken into account the maximum depth is about 200 m. For the Sebeto-Volla and Chiaia zones a mean slope of 1° and 2° was respectively calculated and used in the run-up formula to delineate the maximum inundation depth (Figure 4).…”

Section: Tsunami Hazard In Napoli Gulfmentioning

confidence: 99%

The Tsunami Vulnerability Assessment of Urban Environments through Freely Available Datasets: The Case Study of Napoli City (Southern Italy)

Alberico

Fiore

Iavarone

et al. 2015

JMSE

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Abstract:The analysis of tsunami catalogues and of data published on the NOAA web site pointed out that in the Mediterranean basin, from 2000 B.C. to present, about 480 tsunamis occurred, of which at least a third involved the Italian peninsula. Within this framework, a GIS-aided procedure that takes advantage of spatial analysis to apply the Papathoma Tsunami Vulnerability Assessment model of urban environments is presented, with the main purpose of assessing the vulnerability of wide areas at spatial resolution of the census district. The method was applied to the sector of Napoli city enclosed between Posillipo Hill and the Somma-Vesuvio volcano because of the high population rates (apex value of 5000 inh/km 2 ) and potential occurrence of hazardous events such as earthquakes, volcanic eruptions and mass OPEN ACCESSJ. Mar. Sci. Eng. 2015, 3 982 failures that can trigger tsunamis. The vulnerability status of the urban environment was depicted on a map. About 21% of the possibly inundated area, corresponding with the lowlands along the shoreline, shows a very high tsunami vulnerability. High vulnerability characterizes 26% of inundable zones while medium-low vulnerability typifies a wide area of the Sebeto-Volla plain, ca 800 m away from the shoreline. This map represents a good tool to plan the actions aimed at reducing risk and promoting resilience of the territory.

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Section: Tsunami Hazard In Napoli Gulfmentioning

confidence: 99%

The Tsunami Vulnerability Assessment of Urban Environments through Freely Available Datasets: The Case Study of Napoli City (Southern Italy)

Alberico

Fiore

Iavarone

et al. 2015

JMSE

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“…Specifically, the most visible characteristic that characterizes the tsunami deposits in the ridge/swale environment is the occurrence of parallel lamination that cannot be observed in another environment (e.g. [27,31], Table 3). It is also observed that the sedimentary structures in the ridge/swale environment are the most complex as many sedimentary structures can be observed, such as current ripple and cross bedding [26,27].…”

Section: General Characteristics Of the Sedimentologymentioning

confidence: 99%

Tsunami sediments and their grain size characteristics

Putra

2018

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Characteristics of tsunami deposits are very complex as the deposition by tsunami is very complex processes. The grain size characteristics of tsunami deposits are simply generalized no matter the local condition in which the deposition took place. The general characteristics are fining upward and landward, poor sorting, and the grain size distribution is not unimodal. Here I review the grain size characteristics of tsunami deposit in various environments: swale, coastal marsh and lagoon/lake. Review results show that although there are similar characters in some environments and cases, but in detail the characteristics in each environment can be distinguished; therefore, the tsunami deposit in each environment has its own characteristic. The local geological and geomorphological condition of the environment may greatly affect the grain size characteristics.

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“…At other sites along the Chilean coast, as much as 2 m of vertical planation was observed at the coastline (Morton et al, 2011), similar to the 1.5 to 2.5 m observed in our GPR profiles from Crescent City. Similarly, following the 2011 Tohoku earthquake and tsunami, some areas of the Misawa coast were eroded to a depth of 50-100 cm (Nakamura et al, 2012).…”

Section: Inland Extent and Volume Of Sand Removed By Earthquake And Tmentioning

confidence: 99%

Coastal erosion and recovery from a Cascadia subduction zone earthquake and tsunami

et al. 2017

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Tsunamis generated by great earthquakes threaten coastal infrastructure, development, and human life. Earlier work has documented the inland extent and frequency of past tsunamis, but litle is known about the magnitude of material eroded during prehistoric tsunamis and how erosion and coastal recovery are recorded in coastal stratigraphy. In this study we use high-resolution ground-penetrating radar (GPR) to image and quantify coastal erosion experienced during a late Holocene (~900 cal BP) Cascadia subduction zone earthquake and tsunami along the northern California coast. The GPR profiles illustrate three stratigraphic signatures created during co-seismic subsidence and tsunami erosion and coastal recovery. The first is erosional truncation of the underlying seaward-dipping reflections created

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Local variation of inundation, sedimentary characteristics, and mineral assemblages of the 2011 Tohoku-oki tsunami on the Misawa coast, Aomori, Japan

Cited by 76 publications

References 53 publications

The Tsunami Vulnerability Assessment of Urban Environments through Freely Available Datasets: The Case Study of Napoli City (Southern Italy)

The Tsunami Vulnerability Assessment of Urban Environments through Freely Available Datasets: The Case Study of Napoli City (Southern Italy)

Tsunami sediments and their grain size characteristics

Coastal erosion and recovery from a Cascadia subduction zone earthquake and tsunami

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