Toprak Gazı Radon Konsantrasyon Seviyesi ile Örnekleme Noktasının Akşehir Fay Hattına Uzaklığı Arasındaki İlişki

Radon, kaya tabakasında bulunan uranyumun bozunum zinciri içinde oluşan tatsız, kokusuz, renksiz radyoaktif bir soy gazdır. Radon gaz halinde olduğu için, uranyum ve radyum olan ana radyonüklidlerinden daha hareketlidir. Bu yüzden, radon, toprak granülleri arasındaki gözeneklerden, kayadaki açıklıklar, çatlaklar ve kırıklardan kaçmasıyla toprağı ve kayaları kolayca terk edebilir. Bu özelliklerden dolayı, radon konsantrasyon seviyelerindeki değişiklikler genellikle sismolojik amaçlar için kullanılır. Bu çalışmanın amacı, Akşehir fay hattındaki toprak gazında radon aktivite konsantrasyonuyla örnekleme noktalarının fay hattına olan dik uzaklığı arasındaki ilişkiyi incelemektir. Bu amaçla, radon aktivite konsantrasyonları altı aylık dönemde 10 örnekleme noktasında aylık olarak belirlenmiştir. Tüm örnekleme noktaları için anlamlı bir korelasyon görülmemesine rağmen, yalnızca altı örnekleme noktası dikkate alındığında 0.96'lık bir korelasyon katsayısı elde edilmiştir.

Anahtar Kelimeler:

Toprakta radon, Fay hattına uzaklık, Akşehir fay hattı, Afyonkarahisar

The Relationship between Soil Gas Radon Concentration Level and the Distance of Sampling Point to Akşehir Fault Zone

Radon is a tasteless, odorless, colorless radioactive noble gas which is produced in the decay chain of uranium existed in the rock layer. Since radon is in the gas form, it is more mobile than its parent radionuclides which namely are uranium and radium. Therefore, radon can easily escape soil and rocks through the pores between the soil granules, and the openings in the rock, cracks, and fractures. Because of these characteristics, changes in radon concentration levels are commonly used for seismological purposes. The aim of this study is to investigate the relationship between the radon activity concentration in soil gas on Akşehir fault zone and the vertical distance of the sampling points to the fault zone. For this purpose, radon activity concentrations were monthly determined at 10 sampling points during six-month period. Although no significant correlation can be seen for all sampling points at all, a correlation coefficient of 0.96 was obtained when only the six of sampling points taken into account.

Keywords:

Radon in soil gas, Distance to fault zone, Akşehir fault zone, Afyonkarahisar,

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