Early Estimation of Seismic Hazard for Strong Earthquakes in Taiwan

Jean, Wen-Yu; Chang, Yu-Hern; Wen, Kuo‐Liang; Loh, Chin‐Hsiung

doi:10.1007/s11069-005-4655-y

Cited by 25 publications

(20 citation statements)

References 5 publications

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“…By correlating the isoseismic map to the disaster distribution, the validity of the source parameters can be probed. Empirical attenuation laws of Shin (1998) and Jean et al (2006) were both used to carry out the simulation. Comparing the differences between the isoseismic map generated from PGA and the isoseismic map produced from the observed disaster distribution, the resulting source parameters are expected to be reliable.…”

Section: Simulating An Isoseismic Map To Evaluate Source Parametersmentioning

confidence: 99%

Reconstructing the 1867 Keelung Earthquake and Tsunami Based on Historical Documents

Cheng¹,

Shaw²,

Yeh³

2016

Terr. Atmos. Ocean. Sci.

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On 18 December 1867 a disastrous earthquake struck off northern Taiwan and generated a tsunami that caused hundreds of deaths. At that time, with little information available, people could not be expected to identify the mechanism of the1867 Keelung earthquake or the subsequent tsunami. To reconstruct the earthquake and tsunami available historical documents and references were reviewed and verified. The data were then evaluated for its' credibility. The historical place names were correlated with the present locations and GIS tools were used to reconstruct the earthquake and tsunami and identify the distribution of the resulting damage. Excluding the damage recorded in the Keelung area, there is evidence that shows that the 1867 Keelung earthquake and tsunami killed more than 580 people. The coastal area from Jinshan to Keelung Harbor was the main affected area. With a recorded tsunami wave height of 6 m occurring in Huanggang and Shueiwei, the run-up height in Jinbaoli Old Street and the Badouzi area is estimated to have been 15 m high. The tsunami wave height was observed to be 205 cm at Keelung Harbor Bay. The attenuation law was adopted to simulate the earthquake intensity distribution. The source parameters reasonableness and validity were considered by comparing the earthquake intensity distribution and the resulting damage. Our results show that the 1867 Keelung earthquake was highly correlated with the offshore Shanchiao Fault extension. The length the fault is about 40 km, with the epicenter located at 25.34°N, 121.91°E and focal depth of 10 km. The moment magnitude was 7.0.

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Section: Simulating An Isoseismic Map To Evaluate Source Parametersmentioning

confidence: 99%

Reconstructing the 1867 Keelung Earthquake and Tsunami Based on Historical Documents

Cheng¹,

Shaw²,

Yeh³

2016

Terr. Atmos. Ocean. Sci.

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“…There are several attenuation relationships commonly used in engineering. While analyzing earthquake data from the Central Weather Bureau's Taiwan Strong Motion Instrumentation Program, it was discovered that the attenuation equation proposed by Campbell [21] most closely conforms to the attenuation characteristics of Taiwan region [22]. It is expressed as follows:…”

Section: Seismic Hazard Analysismentioning

confidence: 99%

Development of Seismic Demand for Chang-Bin Offshore Wind Farm in Taiwan Strait

et al. 2016

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Abstract:Taiwan is located on the Pacific seismic belt, and the soil conditions of Taiwan's offshore wind farms are softer than those in Europe. To ensure safety and stability of the offshore wind turbine supporting structures, it is important to assess the offshore wind farms seismic forces reasonably. In this paper, the relevant seismic and geological data are obtained for Chang-Bin offshore wind farm in Taiwan Strait, the probabilistic seismic hazard analysis (PSHA) is carried out, and the first uniform hazard response spectrum for Chang-Bin offshore wind farm is achieved. Compared with existing design response spectrum in the local regulation, this site-specific seismic hazard analysis has influence on the seismic force considered in the design of supporting structures and therefore affects the cost of the supporting structures. The results show that a site-specific seismic hazard analysis is required for high seismic area. The paper highlights the importance of seismic hazard analysis to assess the offshore wind farms seismic forces. The follow-up recommendations and research directions are given for Taiwan's offshore wind turbine supporting structures under seismic force considerations.

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“…The hazard curve of response spectral accelerations for a building, which is obtained from the seismic hazard analysis, is adopted to reflect the uncertainty of earthquakes, as shown in Fig. 4 (Jean et al 2006).…”

Section: Uncertainties In Ground Motion and Structural Capacitymentioning

confidence: 99%

Evaluating Procedure of Optimal Seismic Retrofit Level for a Low-Rise Reinforced Concrete Building

Chiu

Jean

2011

ACT

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This study proposes an estimating procedure that can be used to set the optimal seismic level in the seismic retrofit design for a low-rise reinforced concrete (RC) building. Along with damage control, the cost of maintenance over the remaining service life is also considered in the estimating procedure. However, when a seismic retrofit level defined by the ground acceleration corresponding to the ultimate deformation of the single degree of freedom (SDOF) system for a selected building is specified, several seismic retrofit methods can be used to achieve the specified seismic retrofit level. Since their respective maintenance costs differ, the average value of the annual costs of maintenance for a specified seismic retrofit level was adopted. Under the condition that the average value of the annual reliability indices of a seismic retrofit level for a specified damage state needs to be equal to or greater than the allowable annual reliability index, the seismic retrofit level corresponding to the minimal value is regarded as the optimal level. Finally, a case study was used to discuss the application of the estimating procedure for the optimal seismic retrofit level proposed here. In addition, combinations of the upgrading rates in yielding acceleration and the ductility capacity of the SDOF system are also suggested to the designer of the retrofit for the selected building.

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Early Estimation of Seismic Hazard for Strong Earthquakes in Taiwan

Cited by 25 publications

References 5 publications

Reconstructing the 1867 Keelung Earthquake and Tsunami Based on Historical Documents

Reconstructing the 1867 Keelung Earthquake and Tsunami Based on Historical Documents

Development of Seismic Demand for Chang-Bin Offshore Wind Farm in Taiwan Strait

Evaluating Procedure of Optimal Seismic Retrofit Level for a Low-Rise Reinforced Concrete Building

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