Probabilistic Seismic and Tsunami Hazard Analysis for Design Criteria and Disaster Mitigation in Rehabilitation and Reconstruction of a Coastal area in City of Banda Aceh

Sengara, I Wayan; Latief, Hamzah; Kusuma, Muhammad Syahril Badri

doi:10.1007/978-3-540-79846-0_19

Cited by 9 publications

(15 citation statements)

References 3 publications

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“…Still, the frequency of reported historical tsunamis of destructive power is equally high in the less studied areas north of the Java trench. Similarly, order of magnitude estimates of return periods resulting from this study roughly compare with similar estimates along the Sumatra Trench [e.g., Borrero et al , 2006; Sengara et al , 2008]. The propagation times for the coastlines in question are rarely more than one hour even in the far‐field.…”

Section: Discussionsupporting

confidence: 73%

“…Since then, major efforts have been invested into developing Tsunami Early Warning Systems (TEWS) [e.g., Bernard et al , 2006; Rudloff et al , 2009; Behrens et al , 2010; Lauterjung et al , 2010; Falck et al , 2010; Roessler et al , 2010], but also into physical mitigation structures, as well as into extensive scientific studies and practical efforts ranging from international to local levels. A significant amount of work has been put into tsunami modeling as well as hazard and risk assessment, in particular toward western Sumatra and Java [e.g., Borrero et al , 2006; Sengara et al , 2008; Okal and Synolakis , 2008; McCloskey et al ; 2008; Post et al , 2009; Brune et al , 2010; Spahn et al , 2010; Gayer et al , 2010; Okal et al , 2011; Blaser et al , 2012] and the western coast of Thailand [e.g., Løvholt et al , 2006; Römer et al , 2010; Kaiser et al , 2011]. Paleotsunami field investigations have further indicated evidence of prehistoric disasters [e.g., Jankaew et al , 2008; Monecke et al , 2008].…”

Section: Introductionmentioning

confidence: 99%

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Historical tsunamis and present tsunami hazard in eastern Indonesia and the southern Philippines

Løvholt¹,

Kühn²,

Bungum³

et al. 2012

J. Geophys. Res.

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[1] Eastern Indonesia and the southern Philippines comprise a huge and seismically highly active region that has received less than the deserved attention in tsunami research compared with the surrounding areas exposed to the major subduction zones. In an effort to redress the balance the tsunami hazard in this region is studied by establishing a tsunami event database which, in combination with seismological and tectonic information from the region, has allowed us to define and justify a number of 'credible worst-case' tsunami scenarios. These scenarios have been used in numerical simulations of tsunami generation and propagation to study maximum water level along potentially affected shorelines. The scenarios have in turn been combined to provide regional tsunami hazard maps. In many cases the simulations indicate that the maximum water level may exceed 10 m locally and even reach above 20 m in the vicinity of the source, which is of the same order as what is forecasted along the Sumatra and Java trenches for comparable return periods. For sections of coastlines close to a source, a tsunami may strike only a few minutes after it is generated, providing little time for warning. Moreover, several of the affected areas are highly populated and are therefore also high risk areas. The combination of high maximum water levels, short warning times, dense populations, and relatively short return periods suggests strongly that the tsunami hazard and risk in these regions are alarmingly high.

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Section: Discussionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Historical tsunamis and present tsunami hazard in eastern Indonesia and the southern Philippines

Løvholt¹,

Kühn²,

Bungum³

et al. 2012

J. Geophys. Res.

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“…Consider the maximum acceleration in the bedrock of 0.3g, and an amplification factor of 1.5 for soft soil layers in the Pariaman city region, then of 0.45 will be used in CSR calculation. This maximum acceleration value is in accordance with [19]. Meanwhile, calculation of the ratio CRR based on CPT data using the procedure [20], as following:…”

Section: Evaluation Of Liquefaction Potentialmentioning

confidence: 69%

Vulnerability Levels of Liquefaction Zones as a Spatial Planning Concept Based the Disaster Mitigation in Pariaman City—Indonesia

Hermon¹,

Putra²

2019

Preprint

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Knowledge about the liquefaction vulnerability in Pariaman city which is prone to an earthquake is very much needed in disaster mitigation based spatial planning. The liquefaction is an event of loss of the strength of the sandy soil layer caused by the vibration of the earthquake, where the liquefaction occurs in the sandy soil layer which has loose material in the form of sand that is not compact or not solid. This research was conducted by analyzing the potential of liquefaction vulnerability based on the Conus penetration to produce Microzonation of the susceptibility of subsidence due to liquefaction at 4 locations in Pariaman city, i.e., Marunggi village, Taluak village, Pauh Timur village and Padang Birik-Birik village. The Conus penetration testing is carried out using the piezocone (CPTU) method and mechanical Cunos penetration, and approach using Geographic Information System (GIS). The results showed that the potential of liquefaction was found at the sandy soil layer of sand and a mixture of sand and silt, which is characterized by the value of Cunos resistance and local resistance each smaller than 15 MPa and 150 kPa at varying depths. Based on the results of the analysis using this method, the critical conditions of liquefaction found in the medium sandy soil to solid. The fine sand layer which has the potential for liquefaction is in sand units formed from coastal deposits, coastal ridges and riverbanks. This liquefaction vulnerability zones analysis is limited to a depth of 6.00 m due to the limitations of the equipment used. The results of the analysis show that the fine sand layer which has the potential for liquefaction occurs at a depth of> 1.00-6.00 m with the division of zones, i.e., 1) High liquefaction in the sandy soil layer which has a critical acceleration (a) <0.10 g with shallow groundwater surface; 2) Medium liquefaction in the sandy soil layer which has a critical acceleration (a) between 0.10–0.20 g with shallow groundwater surface; and 3) Low and very low liquefaction in the sandy soil layer which has a critical acceleration (a) between 0.20–0.30 g with an average groundwater deep enough surface.

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“…However, until now there are still two potential threats that can stop the function of the Manggarai sluice gate, namely solid waste blockage and the gate breach. These threats could be generated by the influence of landuse change, climate change, and increasing earthquake risk as reported by several previous studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Previous research has indicated an increasing trend of maximum rainfall, sedimentation rate, and solid waste rate in CFC and WFC due to land-use change and climate change in the last two decades [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An Assessment of Flood Hazards Due to the Breach of the Manggarai Flood Gate

Kesuma¹

2022

GEOMATE

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Central Jakarta is developed on a natural flood plain with a long history of flooding that leads to a series of flood control systems with Manggarai Gate at its center. Nowadays, as a regulator gate, Manggarai Gate is still good enough to control flood hazards in Central Jakarta. However, after operating for more than 100 years, it is necessary to measure the influence of increasing seismic activity, maximum rainfall, sedimentation rate, and solid waste problems on the potential of the Manggarai Gate breach. This study was made to identify flood hazards generated by the Manggarai Gate breach. An overtopping flow generated by excessive runoff is encountered as the gate breach mechanism. A mathematical model using HEC RAS to predict flood inundation due to the breach of Manggarai Gate in that area is presented in this paper. Due to the gate breach, the flood propagation was calibrated upon field observation data. The simulations were done for Q100 (692.6 m 3 /s) with no breach mechanism; and Q100 with a breach mechanism. Based on that flood simulation, it is found that the flood inundated area for the gate breach scheme is approximately 259% compared to the scheme with no gate breach. Meanwhile, the hazard index for the gate breach scheme becomes 225% for the low level, 249% for the medium level, and 276% for the high level. Further study is needed to identify a proper measure to minimize gate breach-induced flood hazards.

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Probabilistic Seismic and Tsunami Hazard Analysis for Design Criteria and Disaster Mitigation in Rehabilitation and Reconstruction of a Coastal area in City of Banda Aceh

Cited by 9 publications

References 3 publications

Historical tsunamis and present tsunami hazard in eastern Indonesia and the southern Philippines

Historical tsunamis and present tsunami hazard in eastern Indonesia and the southern Philippines

Vulnerability Levels of Liquefaction Zones as a Spatial Planning Concept Based the Disaster Mitigation in Pariaman City—Indonesia

An Assessment of Flood Hazards Due to the Breach of the Manggarai Flood Gate

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Probabilistic Seismic and Tsunami Hazard Analysis for Design Criteria and Disaster Mitigation in Rehabilitation and Reconstruction of a Coastal area in City of Banda Aceh

Cited by 9 publications

References 3 publications

Historical tsunamis and present tsunami hazard in eastern Indonesia and the southern Philippines

Historical tsunamis and present tsunami hazard in eastern Indonesia and the southern Philippines

Vulnerability Levels of Liquefaction Zones as a Spatial Planning Concept Based the Disaster Mitigation in Pariaman City&mdash;Indonesia

An Assessment of Flood Hazards Due to the Breach of the Manggarai Flood Gate

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Vulnerability Levels of Liquefaction Zones as a Spatial Planning Concept Based the Disaster Mitigation in Pariaman City—Indonesia