STUDY OF THE INFLUENCING NATURE OF METEOROLOGICAL FACTORS AIR TEMPERATURE AND RELATIVE HUMIDITY ON THE EXHALATION PROCESS OF 222RN/220RN GASES AT MAT FAULT

Abstract

In-situ online data of ²²²Rn/²²⁰Rn gases, air temperature and relative humidity were measured at Mat fault, Mizoram (India) between May, 2018 and October, 2018 with a frequency of once a month. The measurement was carried out using a ZnS(Ag) alpha scintillation based counter named SMARTRnDuo (Model: BARC, India) equipped with capacitor type digital sensor (Model: DHT22/AM2302) for measuring the air temperature and relative humidity. The hourly and day-to-day variation of ²²²Rn/²²⁰Rn gases were correlated with the simultaneously recorded air temperature and relative humidity. The correlation analysis in general shows that ²²²Rn and ²²⁰Rn gases exhibit a negative correlation with air temperature and a positive correlation with relative humidity for the hourly average data. Understanding the influencing nature of meteorological parameters on ²²²Rn/²²⁰Rn exhalation is of vital importance especially in studies where ²²²Rn/²²⁰Rn gases were used as premonitory gases in order to avoid false signal. Hence the authors believe that the present study will serve as baseline data for future study carried out in the region related to ²²²Rn and ²²⁰Rn.