scholarly journals Radon measurements along active faults in the Langadas Basin, northern Greece

2001 ◽  
Vol 1 (3) ◽  
pp. 159-164 ◽  
Author(s):  
C. Papastefanou ◽  
M. Manolopoulou ◽  
S. Stoulos ◽  
A. Ioannidou ◽  
E. Gerasopoulos
Keyword(s):  
Active Faults ◽  
Barometric Pressure ◽  
Alpha Particles ◽  
Northern Greece ◽  
Decay Products ◽  
Before And After ◽  
Radon Decay ◽  
Radon Measurements ◽  
Alpha Spectrometer ◽  
Radon Monitoring

Abstract. A network of three radon stations has been established in the Langadas Basin, northern Greece for radon monitoring by various techniques in earthquake prediction studies. Specially made devices with plastic tubes including Alpha Tracketch Detectors (ATD) were installed for registering alpha particles from radon and radon decay products exhaled from the ground, every 2 weeks, by using LR-115, type II, non-strippable Kodak films, starting from December 1996. Simultaneous measurements started using Lucas cells alpha spectrometer for instantaneous radon measurements in soil gas, before and after setting ATDs at the radon stations. Continuous monitoring of radon gas exhaling from the ground started from the middle of August 1999 by using silicon diode detectors, which simultaneously register meteorological parameters, such as rainfall, temperature and barometric pressure. The obtained data were studied together with the data of seismic events, such as the magnitude, ML, of earthquakes that occurred at the Langadas Basin during the period of measurements, as registered by the Laboratory of Geophysics, Aristotle University of Thessaloniki, in order to find out any association between them.

Uncertainty for Radon EEC Calibration System with Alpha Self-Absorption Consideration

2020 ◽  
Author(s):  
Mostafa Yuness Mostafa ◽  
Maxim Vasyanovich ◽  
Michael Zhukovsky
Keyword(s):  
Gamma Spectroscopy ◽  
Equilibrium Concentration ◽  
Standard Uncertainty ◽  
Alpha Particles ◽  
Calibration System ◽  
Reference Measuring ◽  
Total Uncertainty ◽  
Measuring Device ◽  
Decay Products ◽  
Radon Decay

Abstract The measurement of radon decay products level in dwellings or working places separately is not preferable. The estimation of radon equivalent equilibrium concentration (EECRn) is more simple and quick technique. In this work, the uncertainty of calibration system for radon EEC measurements will present and the reduction will be suggesting. The calibration system for radon EEC measurements was presented and described in previous work with gamma spectrometer as a reference measuring device. The influence of alpha particles absorption in filters materials and filter efficiency taken into account. The measurements of EECRn by gamma spectrometry and improved alpha radiometry are in good agreement and the systematic shift between average values is observed and resolved. The total standard uncertainty of EECRn measurements with gamma spectroscopy is 3.8 %. 71 % of this total uncertainty value is related to the uncertainty of the count rate at full absorption peak with gamma spectroscopy. If the time between the end of sampling and gamma spectroscopy measurements reduced to 2000 s not 4000 s, this value will reduce to 1.6 % and the total standard uncertainty of EEC will be 2.6 %.

scholarly journals Glass implanted 210 Po as a method of defining long-term retrospective exposure to radon: First experiments in Israel

2021 ◽  
Author(s):  
Moshe Shirav ◽  
Gustavo Haquin
Keyword(s):  
Radon Concentration ◽  
Latency Period ◽  
Epidemiological Studies ◽  
Decay Products ◽  
Radon Decay ◽  
Glass Surfaces ◽  
Radon Measurements ◽  
Radon Concentrations

In most epidemiological studies, contemporary radon measurements are used as a proxy for radon concentrations during the latency period even though extreme changes in radon levels may have occurred. Airborne radon decay products are deposited and implanted through alpha recoil into exposed glass surfaces, providing a measure of time-integrated retrospective radon concentration in the environment in which the glass has been located.

Exposure to radon/radon decay products in water works

2001 ◽  
Vol 272 (1-3) ◽  
pp. 347-348 ◽  
Author(s):  
J Schmitz ◽  
R.M Nickels
Keyword(s):  
Decay Products ◽  
Radon Decay

Determination of the concentration of aerosols of short-lived radon decay products

Atomic Energy ◽  
1962 ◽  
Vol 12 (4) ◽  
pp. 359-361
Author(s):  
N. P. Kattashov ◽  
G. A. Popov
Keyword(s):  
Decay Products ◽  
Radon Decay

scholarly journals Discharge and Sediment Transport in a River Basin. Assessment Before and After the Construction of a Dam at the Upper Basin Boundary

2021 ◽  
Author(s):  
George Paschalidis ◽  
Ilias IIordanidis ◽  
Petros Anagnostopoulos
Keyword(s):  
Sediment Transport ◽  
Meteorological Data ◽  
Climatic Data ◽  
Northern Greece ◽  
Basin Boundary ◽  
Software Packages ◽  
Before And After ◽  
The Mean ◽  
Gis Interface ◽  
Good Agreement

Abstract The purpose of this study is the evaluation of runoff and sediment transport in the basin of the Nestos River (Northern Greece) downstream of the dam of Platanovrisi, constructed in 1998. The model used for the simulation was AGNPS, which is based on the Revised Universal Soil Loss Equation (RUSLE), combined with a GIS interface. Two different simulations were conducted, one for the years 1980-1990 and another for the period 2006-2030, before and after the construction of the dam respectively. For the simulation for the period 1980-1990 existing meteorological data were employed, and the results were in good agreement with those of a different study (Hrissanthou, 2002). The simulation for the period 2006-2030 was based on rainfall and climatic data generated from the software packages GlimClim and ClimGen. The mean runoff was by 5% lower and the mean annual sediment yield by 20% lower than the corresponding values for the period 1980-1990.

scholarly journals Radon measurements with CR-39 track detectors at specific locations in Turkey

2004 ◽  
Vol 19 (1) ◽  
pp. 46-49 ◽  
Author(s):  
Asiye Ulug ◽  
Melek Karabulut ◽  
Nilgün Celebi
Keyword(s):  
Radon Concentration ◽  
Indoor Radon ◽  
Active Faults ◽  
Indoor Radon Concentration ◽  
Arithmetic Means ◽  
Radon Measurements ◽  
New Buildings ◽  
Main Factor ◽  
Ventilation Conditions ◽  
Radon Concentrations

Indoor radon concentration levels at three sites in Turkey were measured using CR-39 solid state nuclear track detectors. The annual mean of radon concentration was estimated on the basis of four quarter measurements at specific locations in Turkey. The measuring sites are on the active faults. The results of radon measurements are based on 280 measurements in doors. The annual arithmetic means of radon concentrations at three sites (Isparta Egirdir, and Yalvac) were found to be 164 Bqm?3, 124 Bqm?3, and 112 Bqm?3 respectively, ranging from 78 Bqm?3 to 279 Bqm?3. The in door radon concentrations were investigated with respect to the ventilation conditions and the age of buildings. The ventilation conditions were determined to be the main factor affecting the in door radon concentrations. The in door radon concentrations in the new buildings were higher than ones found in the old buildings.

Sign in / Sign up

Export Citation Format

Share Document