scholarly journals FRAGILITY FUNCTIONS FOR TSUNAMI DAMAGE ESTIMATION

2009 ◽  
Vol 65 (4) ◽  
pp. 320-331 ◽  
Author(s):  
Shunichi KOSHIMURA ◽  
Yuichi NAMEGAYA ◽  
Hideaki YANAGISAWA
Keyword(s):  
Fragility Functions ◽  
Damage Estimation ◽  
Tsunami Damage

Developing Fragility Functions for Tsunami Damage Estimation Using Numerical Model and Post-Tsunami Data from Banda Aceh, Indonesia

2009 ◽  
Vol 51 (3) ◽  
pp. 243-273 ◽  
Author(s):  
Shunichi Koshimura ◽  
Takayuki Oie ◽  
Hideaki Yanagisawa ◽  
Fumihiko Imamura
Keyword(s):  
Numerical Model ◽  
Fragility Functions ◽  
Damage Estimation ◽  
Tsunami Damage ◽  
Banda Aceh

scholarly journals Tsunami damage estimation in Esmeraldas, Ecuador using fragility functions

2021 ◽  
Vol 7 (4) ◽  
pp. 669-694
Author(s):  
Teresa Vera San Martín ◽  
◽  
Leonardo Gutierrez ◽  
Mario Palacios ◽  
Erick Mas ◽  
...  
Keyword(s):  
Rake Angle ◽  
Fragility Functions ◽  
Damage Estimation ◽  
Coastal Zones ◽  
National Budget ◽  
Tsunami Damage ◽  
Fault Parameters ◽  
Tsunami Risk ◽  
Source Models ◽  
Dip Angle

<abstract> <p>The current study investigated the probable impact from a tsunami to a populated area located along the northwest ecuadorian coast, specifically in the key oil-industrial city of esmeraldas. a numerical tsunami simulation was performed considering the seismological and tectonic aspects of the area. The damage probability was calculated using fragility functions (ffs). Briefly, 16 cases of source models with slightly different fault parameters were tested, where one was selected as the worst scenario of tsunami inundation. This scenario was a hypothetic earthquake case (mw 8.7) located in front of esmeraldas city, approximately 100 km offshore along the ecuador—colombia trench, with three shallow fault segments (top depth of 10 km), a strike aligned with the trench axis, a middle dip angle of 28°, assuming large slips of 5 to 15 m, and a rake angle of 90°. The results from the numerical simulation were comparable to a similar study previously conducted and with those of historically documented data. The tsunami damage estimation using FFs resulted in estimated damages of 50% and 44% in exposed buildings and population, respectively. Results also showed that the most impacted areas were located next to the coastal shoreline and river. tourism, oil exports, and port activities, in general, would be affected in this scenario; thus, compromising important industries that support the national budget. Results from this study would assist in designing or improving tsunami risk reduction strategies, disaster management, use of coastal zones, and planning better policies.</p> </abstract>

scholarly journals Derivation of tsunami damage curves from fragility functions

2019 ◽  
Vol 96 (3) ◽  
pp. 1153-1166 ◽  
Author(s):  
W. P. S. Dias ◽  
Udayanga Edirisooriya
Keyword(s):  
Fragility Functions ◽  
Tsunami Damage

scholarly journals An Effective Tsunami Damage Estimation Method Considering Dike Height

2007 ◽  
Vol 54 ◽  
pp. 261-265
Author(s):  
Fuminori KATO ◽  
Masaya FUKUHAMA ◽  
Hiroyuki FUJII ◽  
Toshimitsu TAKAGI ◽  
Toshio KODAMA
Keyword(s):  
Estimation Method ◽  
Damage Estimation ◽  
Tsunami Damage

Development and Validation of a Tsunami Numerical Model with the Polygonally Nested Grid System and its MPI-Parallelization for Real-Time Tsunami Inundation Forecast on a Regional Scale

2019 ◽  
Vol 14 (3) ◽  
pp. 416-434 ◽  
Author(s):  
Takuya Inoue ◽  
Takashi Abe ◽  
Shunichi Koshimura ◽  
Akihiro Musa ◽  
Yoichi Murashima ◽  
...  
Keyword(s):  
Numerical Model ◽  
Real Time ◽  
Regional Scale ◽  
Tsunami Hazard ◽  
Grid System ◽  
Damage Estimation ◽  
Tsunami Inundation ◽  
Computational Performance ◽  
Tsunami Damage ◽  
Rti Model

We have developed a new numerical model suitable for rapid and wide-area estimation of tsunami inundation and damage. The model is based on the world-renowned TUNAMI code solving the two-dimensional nonlinear shallow water equations, and enables one-stop simulation of the initial tsunami distribution based on a fault model, tsunami propagation and inundation, and damage estimation. It extends the configuration of the grid system from conventional rectangular regions to polygonal regions so that deployment of high-resolution grids can be confined to the coastal lowland, resulting in remarkably improved efficiency in computation and better precision. For the purpose of real-time implementation of tsunami inundation simulation using a high-performance computing infrastructure, vectorization and MPI parallelization have also been conducted. Moreover, the model was verified and validated through several benchmark problems that the National Tsunami Hazard Mitigation Program, organized by federal agencies and states in the U.S., developed as the quality standards for simulating and assessing tsunami hazard and risk. The newly-developed model is named “Real-time Tsunami inundation (RTi) model,” and its computational performance was examined using the SX-ACE, a vector supercomputer installed at Tohoku University. The results show that it requires only 128 cores of the SX-ACE for implementing six-hour tsunami inundation simulation with a 10-meter grid resolution within 10 minutes for the 700 km long coastline of Kochi Prefecture, Japan. This means that the RTi model is over 10 times more efficient as the conventional tsunami model with the rectangular domains, and it can be inferred that 2,451 cores of the SX-ACE are the overall computational resources needed for real-time tsunami inundation forecast on the whole coastal regions along the Nankai Trough subduction zone, corresponding to the computational performance of 170 Tflop/s. The resources required are equivalent to 24% of all the SX-ACE resources at Tohoku University, indicating the feasibility of real-time tsunami inundation forecast on a regional scale by using the RTi model. Since the Disaster Information System operated by the Cabinet Office of the Japanese Government adopted a function of tsunami damage estimation using the aforementioned numerical model, at the end of this paper, a brief overview of the subsystem for rapidly estimating tsunami damage on a regional scale is described.

Earthquake and tsunami damage estimation for port-BCP

2014 ◽  
pp. 233-238
Author(s):  
Yasuhiro Akakura ◽  
Kenji Ono ◽  
Koji Ichii
Keyword(s):  
Damage Estimation ◽  
Tsunami Damage

scholarly journals Tsunami damage to ports: Cataloguing damage to create fragility functions from the 2011 Tohoku event

2020 ◽  
Author(s):  
Constance Ting Chua ◽  
Adam D. Switzer ◽  
Anawat Suppasri ◽  
Linlin Li ◽  
Kwanchai Pakoksung ◽  
...  
Keyword(s):  
Fragility Functions ◽  
Adaptation Measures ◽  
2011 Tohoku Tsunami ◽  
Tsunami Damage ◽  
Future Events ◽  
Tsunami Earthquake ◽  
Port Planning ◽  
Port Structures ◽  
Tohoku Tsunami ◽  
First Time

Abstract. Modern tsunami events have highlighted the vulnerability of port structures to these high-impact but infrequent occurrences. However, port planning rarely includes adaptation measures to address tsunami hazards. The 2011 Tohoku tsunami presented us with an opportunity to characterise the vulnerability of port industries to tsunami impacts. Here, we provide a spatial assessment and photographic interpretation of freely available data sources. Approximately 5,000 port structures were assessed for damage and stored in a database. Using the newly developed damage database, tsunami damage is quantified statistically for the first time, through the development of damage fragility functions for eight common port industries. In contrast to tsunami damage fragility functions produced for buildings from existing damage database, our fragility functions showed higher prediction accuracies (up to 75 % accuracy). Pre-tsunami earthquake damage was also assessed in this study, and was found to influence overall damage assessment. The damage database and fragility functions for port industries can inform structural improvements and mitigation plans for ports against future events.

Tsunami Damage Estimation in Consideration of Beach Transformation and Dike Failure

2007 ◽  
Author(s):  
Fuminori Kato ◽  
Masaya Fukuhama ◽  
Hiroyuki Fujii ◽  
Toshimitsu Takagi
Keyword(s):  
Damage Estimation ◽  
Tsunami Damage ◽  
Dike Failure
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