Crockett, R. G. M. and Holt, C. P. (2011) Standardised Radon Index (SRI): a normalisation of radon data-sets in terms of standard normal variables. Natural Hazards and Earth System Science. 11(7), pp. 1839-1844. 1684-9981.
| Item Type: | Article |
|---|---|
| Abstract: | During the second half of 2002, from late June to mid December, the University of Northampton Radon Research Group operated two continuous hourly-sampling radon detectors 2.25km apart in the English East Midlands. This period included the Dudley earthquake (ML = 5, 22 September 2002) and also a smaller earthquake in the English Channel (ML = 3, 26 August 2002). Rolling/sliding windowed cross-correlation of the paired radon time-series revealed periods of simultaneous similar radon anomalies which occurred at the time of these earthquakes but at no other times during the overall radon monitoring period. Stan- dardising the radon data in terms of probability of magnitude, analogous to the Standardised Precipitation Indices (SPIs) used in drought modelling, which effectively equalises dif- ferent non-linear responses, reveals that the dissimilar rela- tive magnitudes of the anomalies are in fact closely equiprob- abilistic. Such methods could help in identifying anomalous signals in radon – and other – time-series and in evaluating their statistical significance in terms of earthquake precur- sory behaviour. |
| Subjects: |
G Geography. Anthropology. Recreation > GE Environmental Sciences > GE300 Environmental management T Technology > TD Environmental technology. Sanitary engineering > TD885.5 Radon pollution Q Science > QE Geology > QE500 Dynamic and structural geology > QE521 Volcanoes and earthquakes |
| Creators: | Crockett, Robin G M and Holt, Chris P |
| Publisher: | EGU / Copernicus |
| Northamptonshire and East Midlands: | Environment |
| Faculties, Divisions and Institutes: | Faculties > Faculty of Arts, Science & Technology > Environmental Science |
| Date: | 5 July 2011 |
| Date Type: | Publication |
| Page Range: | pp. 1839-1844 |
| Journal or Publication Title: | Natural Hazards and Earth System Science |
| Volume: | 11 |
| Number: | 7 |
| Language: | English |
| DOI: | https://doi.org/10.5194/nhess-11-1839-2011 |
| ISSN: | 1684-9981 |
| Status: | Published / Disseminated |
| Refereed: | Yes |
| URI: | http://nectar.northampton.ac.uk/id/eprint/4014 |
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