抄録
Atmospheric γ-radiation has been measured since 1999 and recently at three elevations 220m from the first site to ascertain position dependency and optimal elevation for observing γ-rays from radon and radon-progeny found in precipitation. Radiation from time-independent and diurnal components was minimized in order to ascertain the reliability, accuracy and practicality of determining precipitation rates from correlated γ-rates. Data taken with 4-12.9cm3 NaI detectors at elevations above ground of 9.91, 14.2, 15.7, and 21.4 m were fit with a model assuming a surface and/or volume deposition of radon progeny on/in water droplets during precipitation which predicts γ-ray rates proportional to the 2/5 and/or 3/5 power of rain rates, respectively. With mostly surface deposition and age corrections for radon progeny, the correlation coefficients improved with elevation and reached a maximum at 0.95 around 20m. Atmospheric γ radiation enables monitoring precipitation rates to 0.3 mm/h with time resolution limited only by counting statistics. High γ-ray rates, decreasing with 40-minute half-life following lightning may be indirectly due to ions accelerated in electric field.
| 元の言語 | English |
|---|---|
| ホスト出版物のタイトル | Application of Accelerators in Research and Industry |
| ホスト出版物のサブタイトル | 17th International Conference on the Application of Accelerators in Research and Industry |
| 出版者 | American Institute of Physics Inc. |
| ページ | 820-825 |
| ページ数 | 6 |
| 巻 | 680 |
| ISBN（電子版） | 0735401497 |
| DOI | |
| 出版物ステータス | Published - 2003 8 26 |
| 外部発表 | Yes |
| イベント | 17th International Conference on the Application of Accelerators in Research and Industry - Denton, United States 継続期間: 2002 11 12 → 2002 11 16 |
Other
| Other | 17th International Conference on the Application of Accelerators in Research and Industry |
|---|---|
| 国 | United States |
| 市 | Denton |
| 期間 | 02/11/12 → 02/11/16 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
これを引用
Monitoring precipitation and lightning via changes in atmospheric gamma radiation. / Greenfield, M. B.; Domondon, Andrew; Tsuchiya, S.; Tomiyama, G.
Application of Accelerators in Research and Industry: 17th International Conference on the Application of Accelerators in Research and Industry. 巻 680 American Institute of Physics Inc., 2003. p. 820-825.研究成果: Conference contribution
}
TY - GEN
T1 - Monitoring precipitation and lightning via changes in atmospheric gamma radiation
AU - Greenfield, M. B.
AU - Domondon, Andrew
AU - Tsuchiya, S.
AU - Tomiyama, G.
PY - 2003/8/26
Y1 - 2003/8/26
N2 - Atmospheric γ-radiation has been measured since 1999 and recently at three elevations 220m from the first site to ascertain position dependency and optimal elevation for observing γ-rays from radon and radon-progeny found in precipitation. Radiation from time-independent and diurnal components was minimized in order to ascertain the reliability, accuracy and practicality of determining precipitation rates from correlated γ-rates. Data taken with 4-12.9cm3 NaI detectors at elevations above ground of 9.91, 14.2, 15.7, and 21.4 m were fit with a model assuming a surface and/or volume deposition of radon progeny on/in water droplets during precipitation which predicts γ-ray rates proportional to the 2/5 and/or 3/5 power of rain rates, respectively. With mostly surface deposition and age corrections for radon progeny, the correlation coefficients improved with elevation and reached a maximum at 0.95 around 20m. Atmospheric γ radiation enables monitoring precipitation rates to 0.3 mm/h with time resolution limited only by counting statistics. High γ-ray rates, decreasing with 40-minute half-life following lightning may be indirectly due to ions accelerated in electric field.
AB - Atmospheric γ-radiation has been measured since 1999 and recently at three elevations 220m from the first site to ascertain position dependency and optimal elevation for observing γ-rays from radon and radon-progeny found in precipitation. Radiation from time-independent and diurnal components was minimized in order to ascertain the reliability, accuracy and practicality of determining precipitation rates from correlated γ-rates. Data taken with 4-12.9cm3 NaI detectors at elevations above ground of 9.91, 14.2, 15.7, and 21.4 m were fit with a model assuming a surface and/or volume deposition of radon progeny on/in water droplets during precipitation which predicts γ-ray rates proportional to the 2/5 and/or 3/5 power of rain rates, respectively. With mostly surface deposition and age corrections for radon progeny, the correlation coefficients improved with elevation and reached a maximum at 0.95 around 20m. Atmospheric γ radiation enables monitoring precipitation rates to 0.3 mm/h with time resolution limited only by counting statistics. High γ-ray rates, decreasing with 40-minute half-life following lightning may be indirectly due to ions accelerated in electric field.
UR - http://www.scopus.com/inward/record.url?scp=85041804320&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041804320&partnerID=8YFLogxK
U2 - 10.1063/1.1619837
DO - 10.1063/1.1619837
M3 - Conference contribution
AN - SCOPUS:85041804320
VL - 680
SP - 820
EP - 825
BT - Application of Accelerators in Research and Industry
PB - American Institute of Physics Inc.
ER -