The 2004 Sumatra Earthquake and Tsunami: Lessons Learned in Subduction Zone Science and Emergency Management for the Cascadia Subduction Zone

Cassidy, John F.

doi:10.1007/s00024-014-1023-4

Cited by 3 publications

(3 citation statements)

References 66 publications

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“…50 Ma) and older towards the north (approx. 90 Ma) with historical records showing that earthquakes of high magnitudes happening frequently at younger and faster moving subducting plates (Cassidy, 2015;Gradstein et al, 1994;Gutscher, 2016). This does not imply that mega-earthquakes are not likely to happen at zones that are moving at a slower convergence: the 2004 Aceh earthquake being a prominent example of the latter (McCaffrey, 2009).…”

Section: Interplate Faults In the Sumatran Regionmentioning

confidence: 93%

Revisiting seismic hazard assessment for Peninsular Malaysia using deterministic and probabilistic approaches

Loi

Raghunandan

Swamy

2018

Nat. Hazards Earth Syst. Sci.

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Abstract. Seismic hazard assessments, both deterministic and probabilistic, for Peninsular Malaysia have been carried out using peak ground acceleration (PGA) data recorded between 2004 and 2016 by the Malaysian Meteorological Department using triaxial accelerometers placed at 19 seismic stations on the peninsula. Seismicity source modelling for the deterministic seismic hazard assessment (DSHA) used historical point sources whereas in the probabilistic (PSHA) approach, line and areal sources were used. The earthquake sources comprised the Sumatran subduction zone (SSZ), Sumatran fault zone (SFZ) and local intraplate (LI) faults. Gutenberg–Richter law b value for the various zones identified within the SSZ ranged between 0.56 and 1.06 (mean=0.82) and for the zones within the SFZ, between 0.57 and 1.03 (mean=0.89). Suitable ground motion prediction equations (GMPEs) for Peninsular Malaysia along with other pertinent information were used for constructing a logic tree for PSHA of the region. The DSHA “critical-worst” scenario suggests PGAs of 0.07–0.80 ms−2 (0.7–8.2 percent g), whilst the PSHA suggests mean PGAs of 0.11–0.55 ms−2 (0.5–5.4 percent g) and 0.20–1.02 ms−2 (1.9–10.1 percent g) at 10 % and 2 % probability of exceedance in 50 years, respectively. DSHA and PSHA, despite using different source models and methodologies, both conclude that the central-western cities of Peninsular Malaysia, located between 2 and 4∘ N, are most susceptible to high PGAs, due to neighbouring active Sumatran sources, SFZ and SSZ. Of the two Sumatran sources, surprisingly, the relatively less active SFZ source with low magnitude seismicity appeared as the major contributor due to its proximity. However, potential hazards due to SSZ mega-earthquakes should not be dismissed. Finally, DSHA performed using the limited LI seismic data from the Bukit Tinggi fault at a reasonable moment magnitude (Mw) value of 5.0 predicted a PGA of ∼0.40 ms−2 at Kuala Lumpur.

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Section: Interplate Faults In the Sumatran Regionmentioning

confidence: 93%

Revisiting seismic hazard assessment for Peninsular Malaysia using deterministic and probabilistic approaches

Loi

Raghunandan

Swamy

2018

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Sci. high magnitudes happening frequently at younger and faster moving subducting plates (Cassidy, 2015;Gradstein et al, 1994;Gutscher, 2016). This does not imply that mega earthquakes are not likely to happen at zones that are moving at a slower convergence; the 2004 Aceh earthquake being a prominent example of the latter (McCaffrey, 2009).…”

mentioning

confidence: 99%

Revisiting Seismic Hazard Assessment For Peninsular Malaysia Using Deterministic And Probabilistic Approaches

Loi¹,

Raghunandan²,

Swamy³

2018

Preprint

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Abstract. Seismic hazard assessments -both deterministic and probabilistic, for Peninsular Malaysia have been carried out using peak ground acceleration (PGA) data recorded between 2004 and 2016 by the Malaysian Meteorological Departmentusing triaxial accelerometers placed at 19 seismic stations within the peninsula and monitored. Seismicity source modelling for the deterministic seismic hazard assessment (DSHA) used historical point sources whereas in the probabilistic (PSHA) approach, line and areal sources were used. The earthquake sources comprised the Sumatran Subduction Zone (SSZ), Sumatran 10 Fault Zone (SFZ), and local intraplate (LI) faults. Gutenberg-Richter law b-value for the various zones identified within the SSZ ranged between 0.56 and 1.06 (mean = 0.83) and that for the zones within SFZ, between 0.53 and 1.13 (mean = 0.84).Suitable ground motion prediction equations (GMPEs) for Peninsular Malaysia along with other pertinent information were used for constructing a logic tree for PSHA of the region. The DSHA "critical-worst" scenario suggests PGAs of 0.07-0.80 ms -2 , whilst the PSHA suggests mean PGAs of 0.06-0.42 ms -2 and 0.12-0.70 ms -2 at 10% and 2% probability of exceedance in 15 50 years, respectively. Both DSHA and PSHA, despite using different source models and methodologies, conclude that the central-western cities of Peninsular Malaysia located between 2°N and 4°N are most susceptible to high PGAs due to neighbouring active Sumatran sources SFZ and SSZ. Surprisingly, the relatively less active SFZ source with low magnitude seismicity appeared as the major contributor, due to its close proximity. Potential hazard due to SSZ mega-earthquakes should not be dismissed, however. Finally, DSHA performed using the limited intraplate seismic data from the Bukit Tinggi (LI) fault 20 at a reasonable Mw 5.0 predicted a PGA of ~0.40 ms -2 at Kuala Lumpur.

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“…Perbedaan kedua model ini adalah pada nilai nominal kerugiannya. (Cassidy, 2015). Menurut (Hadmoko, et al, 2007), Tsunami yang terjadi di Aceh diakibatkan oleh gempa dengan magnitude9,00 SR di Samudra Hindia sebelah barat Pulau Sumatra.…”

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Analisis Tingkat Risiko Tsunami Terhadap Bangunan Hunian Di Desa Ulee Lheue Kecamatan Meuraxa Kota Banda Aceh

Isnin¹

2016

JIIS

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On 26th of December 2004, a giant wave ‘Tsunami’ triggered by enourmous earthquake of 9 richter scale in magnitude located in Indian Ocean, to the west of Sumatra Island. This study is focusing on‘ Tsunami Risk Level on Residential Buildings in Ulee Lheue Village, Meuraxa Sub-district, Banda Aceh’. This study is aiming to determine the level of the Tsunami potential danger, to determine the level of vulnerability of the Tsunami on Residential Buildings and to determine the level of the Tsunami risk on residential buildings. Determining the level of the Tsunami potential danger is based on coastal line inundation modelling which are 1 m, 2 m, 5 m, 15 m and 30 m. This study considered the residential buildings as element at risk. The level of Tsunami vulnerability on residential buildings is based on relative vulnerbility index (RVI) of PTVA-3 model and its modifications. The level of the Tsunami risk on residential buildings is based on risk classes. Tsunami risk classes on residential buildings using PTVA model are not different with modification model. Inundation scenario of 1 m, 2 m, and 5 m, tsunami risk class on residential building is catogorized into Class I and inundation scenario of 15 m and 30 m is categorized into class II. The differance of the models is lied on the nominal of potential loss. Keyword: Risk, Tsunami, Residential Buidlings, Ule Lheue Village

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The 2004 Sumatra Earthquake and Tsunami: Lessons Learned in Subduction Zone Science and Emergency Management for the Cascadia Subduction Zone

Cited by 3 publications

References 66 publications

Revisiting seismic hazard assessment for Peninsular Malaysia using deterministic and probabilistic approaches

Revisiting seismic hazard assessment for Peninsular Malaysia using deterministic and probabilistic approaches

Revisiting Seismic Hazard Assessment For Peninsular Malaysia Using Deterministic And Probabilistic Approaches

Analisis Tingkat Risiko Tsunami Terhadap Bangunan Hunian Di Desa Ulee Lheue Kecamatan Meuraxa Kota Banda Aceh

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