In situ measurements of radiation background at the sea surface

Abstract

       The basic radiation was measured by the field gammaspectrometric kit containing HPG detector, multi-channel analyzer, and the necessary electronic components. Measurement was performed one meter above the sea surface. Measurements were made in the Neum-Klek Bay and on the open sea from the research ship "Andrija Mohorovičić". The results indicate that there are fission radionuclides Cs-137 and Cs-134 found along with the natural radionuclides from the uranium and thorium families. Lower values were obtained in the open sea, where there is no terrestrial radiation, and higher in the Neum-Klek Bay where the terrestrial radiation from the coast and the sea bottom influences the radiation background.