In:
Natural Hazards and Earth System Sciences, Copernicus GmbH, Vol. 10, No. 6 ( 2010-06-01), p. 1079-1084
Abstract:
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 (ML=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 (ML=5.2, 27 February 2008). 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 (ML=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.
Type of Medium:
Online Resource
ISSN:
1684-9981
DOI:
10.5194/nhess-10-1079-2010
Language:
English
Publisher:
Copernicus GmbH
Publication Date:
2010
detail.hit.zdb_id:
2069216-X
detail.hit.zdb_id:
2064587-9
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