Study Indicates Triggering of Aftershocks of the Japan 2011 Earthquake by Earth Tides

[Emily]

http://arxiv.org/abs/1106.2938

Triggering of Aftershocks of the Japan 2011 Earthquake by Earth Tides
Arjun Datta, Kamal
(Submitted on 15 Jun 2011)

The aftershock sequence of the devastating Japan earthquake of March 2011 is analyzed for the presence of periodicities at the Earth tide periods. We use spectral analysis as well as a time-domain method KORRECT developed earlier to detect presence of diurnal and semi-diurnal periodicities in the sequence of aftershocks (M \geq 4). This suggests that large aftershocks in the fault zone of the Japan 2011 earthquake were strongly influenced by Earth tides.

Comments: 9 pages, 4 figures
Subjects: Geophysics (physics.geo-ph); Data Analysis, Statistics and Probability (physics.data-an)
Cite as: arXiv:1106.2938v1 [physics.geo-ph]

Full text in PDF format:
http://arxiv.org/ftp/arxiv/papers/1106/1106.2938.pdf