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Earth's rotation variations and earthquakes 2010-2011

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In contrast to unsuccessful searching (lasting over 150 years) for correlation of earthquakes with biweekly tides, the author found correlation of earthquakes with sidereal 13.66 days Earth's rotation variations expressed as length of a day (LOD) measured daily by International Earth's Rotation Service. After short mention about earthquakes M 8.8 Denali Fault Alaska 3 November 2002 triggered on LOD maximum and M 9.1 Great Sumatra earthquake 26 December 2004 triggered on LOD minimum and the full Moon, the main object of this paper are earthquakes of period 2010-June 2011: M 7.0 Haiti (12 January 2010 on LOD minimum, M 8.8 Maule Chile 12 February 2010 on LOD maximum, map constructed on the Indian plate revealing 6 earthquakes from 7 on LOD minimum in Sumatra and Andaman Sea region, M 7.1 New Zealand Christchurch 9 September 2010 on LOD minimum and M 6.3 Christchurch 21 February 2011 on LOD maximum, and M 9.1 Japan near coast of Honshu 11 March 2011 on LOD minimum. It was found that LOD minimums coincide with full or new Moon only twice in a year in solstices. To prove that determined coincidences of earthquakes and LOD extremes stated above are not accidental events, histograms were constructed of earthquake occurrences and their position on LOD graph deeply in the past, in some cases from the time the IERS (International Earth's Rotation Service) started to measure the Earth's rotation variations in 1962. Evaluations of histograms and the Schuster's test have proven that majority of earthquakes are triggered in both Earth's rotation deceleration and acceleration. Because during these coincidences evident movements of lithosphere occur, among others measured by GPS, it is concluded that Earth's rotation variations effectively contribute to the lithospheric plates movement. Retrospective overview of past earthquakes revealed that the Great Sumatra earthquake 26 December 2004 had its equivalent in the shape of LOD graph, full Moon position, and character of aftershocks 19 years earlier in difference only one day to 27 December 1985 earthquake, proving that not only sidereal 13.66 days variations but also that the 19 years Metons cycle is the period of the earthquakes occurrence. Histograms show the regular change of earthquake positions on branches of LOD graph and also the shape of histogram and number of earthquakes on LOD branches from the mid-ocean ridge can show which side of the ridge moves quicker.
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... Earthquakes occur in clusters where usually a large earthquake triggers a number of aftershocks of various magnitude that can trigger other earthquakes giving rise to a local earthquake avalanche. Some studies have suggested that earthquakes could be partially triggered by solar and lunar tidal forces (e.g., Chen et al. 2012;Cochran et al. 2004;Lopes et al. 1990; Mazzarella andPalumbo 1988, 1989;Riguzzi et al. 2010), correlated with climate change phenomena (e.g., Bollinger et al. 2007;Gao et al. 2000;Heki 2003;Liu et al. 2009;Luttrell and Sandwell 2010;McGuire 2013;Miller 2008;Pagli and Sigmundsson 2008;Panza et al. 2011;Saar and Manga 2003;Wu and Johnston 2000) and associated with changes in the length of the day (LOD) (e.g., Mörner 1989Mörner , 1998Mörner , 2013Ostřihanský 2012;Riguzzi et al. 2010;Wang et al. 2000). Because astronomical and (partially) climatic oscillations are cyclical (e.g., Klyashtorin et al. 2009;Ogurtsov et al. 2002;Scafetta 2010aScafetta , 2012bScafetta , 2013b and approximately predictable using harmonic models at the decadal and multidecadal scales, determining the existence of a link between large earthquake occurrences and astronomical and/or climatic indices could be useful to predict at least the annual worldwide frequency of the largest earthquakes. ...
... They also speculated that similar correlation phenomena should exist in other parts of the world although they did not expect that the decade LOD-deformation correlation had always to appear on all monitoring sites or stations. Ostřihanský (2012) found correlation of earthquakes with biweekly tides expressed as LOD variations and suggested that a majority of earthquakes could be triggered in both Earth's rotation deceleration and acceleration. Ostřihanský (2012) also speculated the existence of longer cycles by observing that the ''Great Sumatra earthquake 26 December 2004 had its equivalent in the shape of LOD graph, full Moon position, and character of aftershocks 19 years earlier in difference only one day to 27 December 1985 earthquake, proving that not only sidereal 13.66 days variations but also that the 19 years Metons cycle is the period of the earthquakes occurrence.'' ...
... Ostřihanský (2012) found correlation of earthquakes with biweekly tides expressed as LOD variations and suggested that a majority of earthquakes could be triggered in both Earth's rotation deceleration and acceleration. Ostřihanský (2012) also speculated the existence of longer cycles by observing that the ''Great Sumatra earthquake 26 December 2004 had its equivalent in the shape of LOD graph, full Moon position, and character of aftershocks 19 years earlier in difference only one day to 27 December 1985 earthquake, proving that not only sidereal 13.66 days variations but also that the 19 years Metons cycle is the period of the earthquakes occurrence.'' ...
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