High levels of terrestrial gamma radiation exposure in the Kopili Fault Zone on the eastern wedge of the Shillong Plateau, India

Protim, Gogoi Pranjal; Phukan, Sarat; Barooah, Debajyoti

doi:10.1007/s11600-024-01459-4

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Tytuł artykułu

High levels of terrestrial gamma radiation exposure in the Kopili Fault Zone on the eastern wedge of the Shillong Plateau, India

Autorzy

Protim Gogoi Pranjal , Phukan Sarat , Barooah Debajyoti

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-024-01459-4

Warianty tytułu

Języki publikacji

Abstrakty

This study addresses the substantial terrestrial gamma radiation exposure and associated radiological risk in the Amsoi region, located in the seismically active Kopili Fault Zone (KFZ) on the periphery of Shillong Plateau’s gneissic complex. A portable monitoring device highly sensitive to gamma radiation, equipped with a NaI (Tl) scintillator, was used to quantify the terrestrial gamma dose rates in indoor and outdoor air. The recorded dose rates varied among house patterns, with mud houses having the highest. The calculated absorbed dose rates indoors and outdoors were found to be in the range of 157.9-362.5 nGy h^-1 and 163.7-336.2 nGy h^-1, respectively, which are much higher than the reported population-weighted global averages of 84 nGy h^-1 and 59 nGy h^-1. The indoor-to-outdoor ratio was also calculated and found to be in the range of 0.7-1.4. The elevated terrestrial gamma radiation could be attributed to the geological setting of the study area, located in the seismically active KFZ. The annual effective dose equivalents for indoor and outdoor environments were calculated and found to be in the ranges of 0.8-1.8 mSv and 0.2-0.4 mSv, respectively. The excess lifetime cancer risk was assessed by calculating the lifetime effective dose and was found to be in the range of 3.4 X 10^-3 -7.3 X 10^-3, which is considerably higher than the global average of 1.45 X 10^-3. This study has revealed that the populations residing in this seismically active fault zone are living precariously under high terrestrial gamma radiation.

Słowa kluczowe

terrestrial gamma radiation Amsoi portable monitoring device gamma dose rate annual effective dose equivalents excess lifetime cancer risks

ziemskie promieniowanie gamma Amsoi przenośne urządzenie monitorujące moc dawki promieniowania gamma roczne efektywne ekwiwalenty dawki nadmierne ryzyko raka w ciągu całego życia

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2025

Tom

Vol. 73, no. 1

Strony

527--536

Opis fizyczny

Bibliogr. 49 poz.

Twórcy

autor

Protim Gogoi Pranjal

Department of Physics, Cotton University, Guwahati, Assam 781001, India

autor

Phukan Sarat

Department of Geological Sciences, Gauhati University, Guwahati, Assam 781014, India

autor

Barooah Debajyoti

debajyoti.barooah@cottonuniversity.ac.in

Department of Physics, Cotton University, Guwahati, Assam 781001, India

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).

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Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-ac007403-3a29-4235-a4c0-b483b3fa6f67