scholarly journals Radon concentration changes in ground water prior all the earthquakes (M>2.5) occurred from September 1998 to January 1999, in the area of Atalanti fault (Greece)

2001 ◽  
Vol 34 (4) ◽  
pp. 1433
Author(s):  
Π. ΜΗΤΡΟΠΟΥΛΟΣ ◽  
Κ. NOTSU ◽  
G. IGARASHl ◽  
Τ. MORI ◽  
Ν. ΔΕΛΗΜΠΑΣΗΣ ◽  
...  
Keyword(s):  
Ground Water ◽  
Earthquake Prediction ◽  
Radon Concentration ◽  
Local Scale ◽  
Stress Release ◽  
Concentration Changes ◽  
Concentration Measurements ◽  
Stress Accumulation

Significant precursory changes in the radon concentration of groundwater were observed, 5-6 days prior all the earthquakes (M>2.5) occurred in the area of the Atalanti fault during the period from 22/9/1998-17/1/1999. The radon concentration measurements of ground water,were obtained at one hour intervals by the use of a ZnS(Ag) scintillation chamber. When no earthquake occurs, the radon concentration of the groundwater shows considerable stability. Prior of an earthquake radon concentration increases significantly at the beginning and then dropped to an also significant lower value. These radon concentration changes can be attributed to the temporary enrichment of the groundwater by radon from the surrounding rocks due to the action of stress release or stress accumulation prior an earthquake. It seems likely that the method can be an important tool for the earthquake prediction in local scale.

scholarly journals EARTHQUAKE PREDICTION IN THE AREA OF N. EVIA ON THE BASIS OF GROUNDWATER RADON CONCENTRATION CHANGES

2004 ◽  
Vol 36 (3) ◽  
pp. 1356
Author(s):  
Π. Μητρόπουλος ◽  
K. Notsu ◽  
Ν. Δελήμπασης ◽  
N. Κακαβάς ◽  
Π. Βουδούρης
Keyword(s):  
Earthquake Prediction ◽  
Radon Concentration ◽  
Seismic Activity ◽  
Strong Earthquake ◽  
Stress Release ◽  
Short Term ◽  
Radon Measurement ◽  
Concentration Changes ◽  
Precursors Of Earthquakes ◽  
Stress Accumulation

Significant changes in the groundwater radon concentration, were observed on the 29/7/2003, at Kammena Vourla. The radon concentration changes can be attributed to the temporary enrichment of the groundwater by radon from the surrounding rocks due to the action of stress release or stress accumulation prior an earthquake. EPPO was immediately informed for the existence of these changes. On the 3/8/2003, a significant number of earthquakes in Northern Evia were recorded in an interval of a few hours. The epicentres of the earthquakes were located in the conceivable line between the epicentre of the strong earthquake of Skyros island (July 2001) and the site of the station of radon measurement at Kammena Vourla, on the extension of the Northern Aegean fault. In the 23/1/2003, in the same station, 3 significant changes of radon concentration were measured EPPO was immediately informed for impending seismic activity in Northern Evia. On the 29th of January three earthquakes were recorded. Their epicentres were located in N. Evia, close to the radon measurement, station. On the 2/2/2003, a new significant radon change occurred at Kammena Vourla followed by an earthquake (7/2/2003). In the 12/2/2003 in a letter that we addressed to the EPPO administration, the beginning of a new radon change was reported which also led to an earthquake with the same epicentre. The changes that are recorded in the system of radon measurement of Kammena Vourla are precursors of earthquakes, related to the extension of the N. Aegean fault towards the Sterea Hellas and have their epicentre in N. Evia. It seems that the method can be an important tool for local, short term earthquake prediction.

Radon concentration measurements in the AMASRA coal mine, Turkey

2005 ◽  
Vol 118 (1) ◽  
pp. 122-125 ◽  
Author(s):  
R. Baldık ◽  
H. Aytekin ◽  
N. Çelebi ◽  
B. Ataksor ◽  
M. Taşdelen
Keyword(s):  
Coal Mine ◽  
Radon Concentration ◽  
Concentration Measurements

RADON CONCENTRATION IN SOIL AND GROUNDWATER OF WEST COASTAL AREA, BANGLADESH

2020 ◽  
Vol 191 (3) ◽  
pp. 341-348
Author(s):  
Farah Deeba ◽  
Syed Hafizur Rahman ◽  
Mohammad Zafrul Kabir
Keyword(s):  
Ground Water ◽  
Coastal Area ◽  
Radon Concentration ◽  
Annual Effective Dose ◽  
Mean Value ◽  
Natural Background ◽  
Safe Limit ◽  
Radon Monitor ◽  
Different Depths ◽  
The Mean

Abstract On-site radon concentration has been measured in soil gas and ground water using AlphaGUARD PQ2000 PRO (Saphymo, Germany) radon monitor at the west coastal area of Bangladesh. The measured radon concentration in ground water samples is in the range of 1.41 ± 0.29 to 3.2 ± 0.59 Bq/l with the mean value of 2.33 ± 0.50 Bq/l, which lies within the safe limit recommended by UNSCEAR (2008). The total annual effective dose estimated due to radon concentration in ground water ranges from 3.85 to 8.74 μSv/y with the mean value of 6.37 μSv/y, which is lower than the safe limit set by WHO (2004) and EU (1998). In soil samples, radon concentration has been measured at three different depths (0, 20 and 40 cm) in each location. The highest and the lowest concentrations are 4790 ± 51 and 10 ± 04 Bq/m3 at 40 and 0 cm (surface) depth, respectively, which lie within the natural background levels.

scholarly journals Radon concentration measurements at a university campus in Turkey

2016 ◽  
Vol 40 ◽  
pp. 69-75 ◽  
Author(s):  
Melekşah ALTINSÖZ ◽  
Emel ALĞIN ◽  
Celal AŞICI ◽  
Hacı SOĞUKPINAR
Keyword(s):  
Radon Concentration ◽  
University Campus ◽  
Concentration Measurements
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