Journal cover Journal topic
Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

IF value: 1.558
IF1.558
IF 5-year value: 1.475
IF 5-year
1.475
CiteScore value: 2.8
CiteScore
2.8
SNIP value: 0.921
SNIP0.921
IPP value: 1.56
IPP1.56
SJR value: 0.571
SJR0.571
Scimago H <br class='widget-line-break'>index value: 55
Scimago H
index
55
h5-index value: 22
h5-index22
Volume 17, issue 5
Nonlin. Processes Geophys., 17, 569–574, 2010
https://doi.org/10.5194/npg-17-569-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Complexity and extreme events in geosciences

Nonlin. Processes Geophys., 17, 569–574, 2010
https://doi.org/10.5194/npg-17-569-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 12 Oct 2010

Research article | 12 Oct 2010

Wavelet analysis of the seismograms for tsunami warning

A. Chamoli1, V. Swaroopa Rani1, K. Srivastava1, D. Srinagesh1, and V. P. Dimri2 A. Chamoli et al.
  • 1National Geophysical Research Institute (Council of Scientific & Industrial Research), Hyderabad-500007, India
  • 2Gujarat Energy Research & Management Institute, Research, Innovation & Incubation Centre, Gandhinagar 382 007, India

Abstract. The complexity in the tsunami phenomenon makes the available warning systems not much effective in the practical situations. The problem arises due to the time lapsed in the data transfer, processing and modeling. The modeling and simulation needs the input fault geometry and mechanism of the earthquake. The estimation of these parameters and other aprior information increases the utilized time for making any warning. Here, the wavelet analysis is used to identify the tsunamigenesis of an earthquake. The frequency content of the seismogram in time scale domain is examined using wavelet transform. The energy content in high frequencies is calculated and gives a threshold for tsunami warnings. Only first few minutes of the seismograms of the earthquake events are used for quick estimation. The results for the earthquake events of Andaman Sumatra region and other historic events are promising.

Publications Copernicus
Download
Citation