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Statistical study of the atmospheric background and anomalous values of the radioxenon activity concentrations at some IMS stations
Autori S. Guernelli, M. Scagliarini, G. Ottaviano, A. Rizzo, F. Padoani, M.B. Kalinowski  Anno 2019
Tipologia Poster Conferenza Internazionale con referaggio
Abstract The main goal is to perform a detailed statistical analysis of the atmospheric background and of the 'Abnormal Concentrations' of radioxenon, measured at the Takasaki noble gas station (JPX38) of the International Monitoring System of the CTBTO.
A preliminary descriptive statistical analysis of the empirical distribution was performed and then two types of 'Statistical Process Control Charts' were applied to the measured values.
The 'Control Chart for Individual Measurements' (Shewhart’s type), sensitive to large variations and the 'EWMA Chart', sensitive to small variations, were applied in order to analyse the overall chronology of the observations and in order to identify and study those values that significantly deviate from the average value.
The application of the Statistical process Control Charts at the JPX38 station shows that this method could contribute, to the periodic monitoring of IMS stations through the use of 'Individual Measurements Chart', supporting the identification of large variations of radio-xenon activity concentrations; while it could be valuable for specific studies on the atmospheric background and on the "anomalies" of radioxenon activity concentrations through the use of the 'EWMA Control Chart'.
Referenza_Bibliografica CTBT. S&T 2019 Conference
24-28 giugno 2019
Vienna (Austria)
Poster n. T2.4-P52
Riferimento WEB https://events.ctbto.org/snt/snt2019
Riferimento repository DI138-031
Unita di Ricerca NDC
LastUpdate 07/01/2022
Topic di ricerca collegati
Codice Topic di ricerca Descrizione
4 TECNICHE ISOTOPICHE
4.1 Analisi isotopiche emanazioni aeriformi

impact factor Falso





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