Tsunami propagation scenarios in the South China Sea

Dao, My Ha; Tkalich, Pavel; Chan, Eng Soon; Megawati, Kusnowidjaja

doi:10.1016/j.jseaes.2008.09.009

Cited by 43 publications

(17 citation statements)

References 13 publications

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“…As shown in previous studies (e.g., [30][31][32][33]), the Manila subduction zone ( Figure 1) has been identified as a zone of potential tsunami hazard in the SCS region. Despite the absence of clear historical evidence on large tsunamis generated at the Manila trench, tsunami deposits found at the Xischa Islands (~1024 AD) may be attributed to a large event in this source region [34].…”

Section: Introductionsupporting

confidence: 59%

Precise Positioning of BDS, BDS/GPS: Implications for Tsunami Early Warning in South China Sea

et al. 2015

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Global Positioning System (GPS) has been proved to be a powerful tool for measuring co-seismic ground displacements with an application to seismic source inversion. Whereas most of the tsunamis are triggered by large earthquakes, GPS can contribute to the tsunami early warning system (TEWS) by helping to obtain tsunami source parameters in near real-time. Toward the end of 2012, the second phase of the BeiDou Navigation Satellite System (BDS) constellation was accomplished, and BDS has been providing regional positioning service since then. Numerical results indicate that precision of BDS nowadays is equivalent to that of the GPS. Compared with a single Global Satellite Navigation System (GNSS), combined BDS/GPS real-time processing can improve accuracy and especially reliability of retrieved co-seismic displacements. In the present study, we investigate the potential of BDS to serve for the early warning system of tsunamis in the South China Sea region. To facilitate early warnings of tsunamis and forecasting capabilities in this region, we propose to distribute an array of BDS-stations along the Luzon Island (Philippines). By simulating an earthquake with Mw = 8 at the Manila trench as an example, we demonstrate that such an array will be able to detect earthquake parameters in real time with a high degree of accuracy and, hence, contribute to the fast and reliable tsunami early warning system in this region.

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Section: Introductionsupporting

confidence: 59%

Precise Positioning of BDS, BDS/GPS: Implications for Tsunami Early Warning in South China Sea

et al. 2015

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“…Previous studies have revealed that potential tsunami generation sources for China are the Manila Trench off the west coast of the Philippines and the Ryukyu Trench off the East China Sea shelf break, which are most likely to generate regional tsunami [11,12]. However, tidal observations during the 2010 Chile earthquake tsunami remind us that Pacific-wide tele-tsunami also pose a great threat to China despite the protection afforded by the island chain and vast East China Sea shelf.…”

Section: Tidal Gauge Records Of the Teletsunami 21 Description Of Timentioning

confidence: 99%

Evaluation of potential hazards from teletsunami in China: Tidal observations of a teletsunami generated by the Chile 8.8 M w earthquake

Yuan

Zhao

et al. 2011

Chin. Sci. Bull.

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an earthquake of M w 8.8 rocked the central coast of Chile. A teletsunami was triggered by the huge earthquake and then propagated across the entire Pacific in less than 24 h. The initial tsunami wave arrived at the southeast coast of China at 16 : 20 on February 28 and was recorded in real time by a number of tidal gauges off mainland China and Taiwan Province. The teletsunami waves have never been recorded with such a broad geographical scope in China before this event. The aim of the present work is to report the first description of sea-level oscillations generated by the Chile tsunami, and evaluate the potential hazards that teletsunami poses to the coast of China. The results reveal that the east coast of Taiwan Province, Zhejiang Province and the north coast of Fujian Province are vulnerable to transoceanic tsunami. In addition, spectral and wavelet analysis of the recorded sea-level oscillations shows that "seiches" are easily excited by the resonance resulting from the interaction between the initial tsunami waves and local geometry (such as semi-enclosed bays and ports). The superimposition of the two oscillations would amplify the wave height further.Chile, teletsunami, wave height, seiche, potential hazard Citation:Yu F J, Yuan Y, Zhao L D, et al. Evaluation of potential hazards from teletsunami in China: Tidal observations of a teletsunami generated by the Chile 8.8 M w earthquake.

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“…Based on historical tsunamigenic record for the region, it is believed that potential tsunami sources exist in the region due to the Manila subduction zone seismic activities [10][11][12]. Various hypothetical earthquake-ruptured faults have been reported for the Manila subduction zone [9,10,13,14]. The tsunami source considered in this paper is generated by a giant earthquake of magnitude M w above 9, which is considered as the worst case scenario by Megawati et al [15].…”

Section: Tsunami Simulations In the South China Seamentioning

confidence: 99%

Tsunami risk mapping simulation for Malaysia

Teh

Koh

Moh

et al. 2011

WIT Transactions on the Built Environment

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The 26 December 2004 Andaman mega tsunami killed about a quarter of a million people worldwide. Since then several significant tsunamis have recurred in this region, including the most recent 25 October 2010 Mentawai tsunami. These tsunamis grimly remind us of the devastating destruction that a tsunami might inflict on the affected coastal communities. There is evidence that tsunamis of similar or higher magnitudes might occur again in the near future in this region. Of particular concern to Malaysia are tsunamigenic earthquakes occurring along the northern part of the Sunda Trench. Further, the Manila Trench in the South China Sea has been identified as another source of potential tsunamigenic earthquakes that might trigger large tsunamis. To protect coastal communities that might be affected by future tsunamis, an effective early warning system must be properly installed and maintained to provide adequate time for residents to be evacuated from risk zones. Affected communities must be prepared and educated in advance regarding tsunami risk zones, evacuation routes as well as an effective evacuation procedure that must be taken during a tsunami occurrence. For these purposes, tsunami risk zones must be identified and classified according to the levels of risk simulated. This paper presents an analysis of tsunami simulations for the South China Sea and the Andaman Sea for the purpose of developing a tsunami risk zone classification map for Malaysia based upon simulated maximum wave heights.

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Tsunami propagation scenarios in the South China Sea

Cited by 43 publications

References 13 publications

Precise Positioning of BDS, BDS/GPS: Implications for Tsunami Early Warning in South China Sea

Precise Positioning of BDS, BDS/GPS: Implications for Tsunami Early Warning in South China Sea

Evaluation of potential hazards from teletsunami in China: Tidal observations of a teletsunami generated by the Chile 8.8 M w earthquake

Tsunami risk mapping simulation for Malaysia

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