Radioactivity Monitoring at North Aegean Sea Integrating In-Situ Sensor in an Ocean Observing Platform

Journal of Marine Science and Engineering

Leonidas Perivoliotis¹  Christos Tsabaris¹  Stylianos Alexakis¹  Dionysios Ballas¹  EffrossyniG. Androulakaki¹  Athanasia Iona¹ 

[1] Hellenic Centre for Marine Research, Institute of Oceanography, P.O. BOX 712, Gr-19013 Anavyssos, Greece;

关键词: radioactivity;    underwater sensors;    ocean buoys;    rainfall;    North Aegean Sea;   

DOI  :  10.3390/jmse9010077

来源: DOAJ

【 摘 要 】

The integration of the radioactivity spectrometer KATERINA II in a fixed station (buoy) of the POSEIDON network at the North Aegean Sea within the framework of MARRE Project is presented. The acquisition period lasted from 20 November 2019 till 22 February 2020. An intense increment of the activity concentration of radon progenies (up to an order of magnitude) was recorded during rainfall. More specifically, the ²¹⁴Bi activity concentration varied from 0.09 to 0.53 Bq L⁻¹ without rainfall and the ²¹⁴Pb activity concentration varied from 0.14 to 0.81 Bq L⁻¹. The ²¹⁴Bi activity concentration during rainfall ranged from 0.4 to 5.4 Bq L⁻¹ and of ²¹⁴Pb from 0.3 to 5.3 Bq L⁻¹. The minimum detectable activity of the KATERINA II detection system for measuring low level activities of ¹³⁷Cs is optimized applying background subtraction and the full spectrum analysis technique.

【 授权许可】

Unknown