Marine Hydrography

Observed waveform and characteristics of the 2010 Chile and 2011 Japan tsunamis near the coast of South China

  • PAN Wen-liang ,
  • WANG Sheng-an ,
  • SUN Lu ,
  • LONG Xiao-min
Expand
  • 1. State Key Laboratory of Tropical Oceanography ,Guangzhou 510301, China; 2. Environment Monitoring Center of the South China Sea, South China Sea Branch of State Oceanic Administration, Guangzhou 510300, China;

Received date: 2014-01-17

  Revised date: 2014-04-28

  Online published: 2015-01-07

Abstract

In this study we analyzed the sea level data from two pressure-based gauges in Sanya Bay and Guanghai Bay of Taishan to investigate the tsunami waveforms of two major tsunamis, the 2010 Chile and the 2011 Japan events. With the sea level data from two deep-ocean assessment and reporting of tsunamis (DART) stations, we focused on the far-field characteristics of tsunami waves on the coast of South China. Fourier power spectrum and wavelet analysis were used to describe the timing and spectral content of the tsunami signals. The tsunami waves of both events arrived at the coast of South China in 3~4 hours after entering the Bashi Channel. The similarities and differences between the tsunami signals of the two events were then compared to highlight the tsunami response characteristics of local topography. Spectral content of certain periods were amplified during tsunami transformation and evolution. Tsunami waves can oscillate, lasting for over 2~3 days in the bays with signals of longer period having longer duration. Though these two tsunami events did not pose disastrous impact on our coast, this study provides a comprehensive analysis of far-field tsunami characteristics on the coast of South China and will be of value for future tsunami hazard assessment.

Cite this article

PAN Wen-liang , WANG Sheng-an , SUN Lu , LONG Xiao-min . Observed waveform and characteristics of the 2010 Chile and 2011 Japan tsunamis near the coast of South China[J]. Journal of Tropical Oceanography, 2014 , 33(6) : 17 -23 . DOI: 10.11978/j.issn.1009-5470.2014.06.003

References

[1] 马继瑞, 付世杰. 1989. 最大熵谱分析中的置信区间估计和显著性周期检验方法[J]. 海洋通报, 8: 75-80.
[2] 王培涛, 于福江, 赵联大, 等. 2012. 2011年3月11日日本地震海啸越洋传播及对中国影响的数值分析[J]. 地球物理学报, 55: 3088-3096.
[3] 谢燕双, 商少平, 魏艳, 等. 2012. 2010 年智利强震引发的海啸对台湾周边海域的影响[J]. 厦门大学学报: 自然科学版, 51: 898-902.
[4] 叶琳, 于福江, 吴玮. 2005. 我国海啸灾害及预警现状与建议[J]. 海洋预报, 22: 147-157.
[5] 于福江, 原野, 赵联大, 等. 2011. 2010年2月27日智利8.8级地震海啸对我国影响分析[J]. 科学通报, 56: 239-246.
[6] BORRERO J C, GREER S D. 2013. Comparison of the 2010 Chile and 2011 Japan tsunamis in the far field[J]. Pure and Applied Geophysics, 170: 1-26.
[7] DRAGANI W C, D’ONOFRIO E E, GRISMEYER W, et al. 2006. Tide gauge observations of the Indian ocean tsunami, December 26, 2004, in Buenos Aires coastal waters, Argentina[J]. Continental Shelf Research, 26: 1543-1550.
[8] HEIDARZADEH M, SATAKE K. 2013. Waveform and spectral analyses of the 2011 Japan tsunami records on tide gauge and
[9] DART stations across the Pacific Ocean[J]. Pure and Applied Geophysics, 170: 1275-1293.
[10] LIU P L F, WOO S B, CHO Y S. 2007. COMCOT User Manual Version 1.6[R]. New York: Cornell University: 1-23.
[11] MCMURTRY G M, WATTS P, FRYER G J, et al. 2004. Giant landslides, mega-tsunamis, and paleo-sea level in the Hawaiian Islands[J]. Marine Geology, 203: 219-233.
[12] MERRIFIELD M A, FIRING Y L, AARUP T, et al. 2005. Tide gauge observations of the Indian Ocean tsunami, December 26, 2004[J]. Geophysical Research Letters, 32: L09603.
[13] RABINOVICH A B. 1997. Spectral analysis of tsunami waves: separation of source and topography effects[J]. Journal of Geophysical Research: Oceans, 102: 12663-12676.
[14] RABINOVICH A B, THOMSON R E. 2007. The 26 December 2004 Sumatra tsunami: analysis of tide gauge data from the World Ocean Part 1: Indian Ocean and South Africa[J]. Pure and Applied Geophysics, 164: 261-308.
[15] TITOV V, RABINOVICH A B, MOFJELD H O, et al. 2005. The global reach of the 26 December 2004 Sumatra tsunami[J]. Science, 309: 2045-2048.
Outlines

/