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Comparison of the 2010 Chile and 2011 Japan tsunamis in the far field
Borrero, J.C.; Greer, S.D. (2013). Comparison of the 2010 Chile and 2011 Japan tsunamis in the far field. Pure Appl. Geophys. 170(6-8): 1249-1274. https://dx.doi.org/10.1007/s00024-012-0559-4
In: Pure and Applied Geophysics. Birkhäuser: Basel. ISSN 0033-4553; e-ISSN 1420-9136, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Analysis > Mathematical analysis > Spectral analysis
    Analysis > Mathematical analysis > Statistical analysis > Time series analysis
    Equipment > Measuring devices > Gauges > Tide gauges
    Long waves
    New Zealand
    Ports
    USA, California
    Water waves > Surface water waves > Tsunamis
    Wavelet analysis
    California [Marine Regions]; New Zealand [Marine Regions]
    Marien/Kust
Author keywords
    Harbor resonance
Auteurs  Top 
  • Borrero, J.C.
  • Greer, S.D.
Abstract
    In this study we analyze water level data from coastal tide gauges and deep-ocean tsunameters to explore the far-field characteristics of two major trans-Pacific tsunamis, the 2010 Chile and the 2011 Japan (Tohoku-oki) events. We focused our attention on data recorded in California (14 stations) and New Zealand (31 stations) as well as on tsunameters situated along the tsunami path and proximal to the study sites. Our analysis considers statistical analyses of the time series to determine arrival times of the tsunami as well as the timing of the largest waves and the highest absolute sea levels. Fourier and wavelet analysis were used to describe the spectral content of the tsunami signal. These characteristics were then compared between the two events to highlight similarities and differences between the signals as a function of the receiving environment and the tsunami source. This study provides a comprehensive analysis of far-field tsunami characteristics in the Pacific Ocean, which has not experienced a major tsunami in nearly 50 years. As such, it systematically describes the tsunami response characteristics of modern maritime infrastructure in New Zealand and California and will be of value for future tsunami hazard assessments in both countries.
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