spectral-decomposition techniques for the identification of radon anomalies temporally associated with earthquakes occurring in the uk in 2002 and 2008

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ID: 252028
2010
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Abstract
During the second half of 2002, the University of Northampton Radon Research Group operated two continuous hourly-sampling radon detectors 2.25 km apart in the English East Midlands. This period included the Dudley earthquake (<i>M</i><sub>L</sub>=5, 22 September 2002). Also, at various periods during 2008 the Group has operated other pairs of continuous hourly-sampling radon detectors similar distances apart in the same region. One such period included the Market Rasen earthquake (<i>M</i><sub>L</sub>=5.2, 27 February 2008). <br><br> Windowed cross-correlation of the paired time-series was used to identify simultaneous short-duration anomalies. In the 2002 data, only two periods of significant cross-correlation were observed, each corresponding temporally to a UK earthquake, one to the Dudley earthquake and the other to a smaller earthquake in the English Channel (<i>M</i><sub>L</sub>=3, 26 August 2002). In the 2008 data, cross-correlation initially revealed little evidence of simultaneous short-duration anomalies but cross-correlation of data de-noised and de-trended using Empirical Mode Decomposition (EMD) revealed clear simultaneous short-duration anomalies which correspond temporally to the Market Rasen earthquake.
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crockett2010naturalspectral-decomposition Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;R. G. M. Crockett;G. K. Gillmore
Journal anziam journal
Year 2010
DOI
10.5194/nhess-10-1079-2010
URL
http://www.nat-hazards-earth-syst-sci.net/10/1079/2010/nhess-10-1079-2010.pdf
Keywords
anthropology recreationenvironmental sciencesgeology sanitary engineeringgeography environmental technology

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