Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring
In aerial radiation monitoring (ARM), the air dose rate cannot be appropriately estimated under snowy conditions due to attenuation of gamma rays by the snow layer. A technique to address this issue is required for ARM to obtain enough signals for air dose rates. To develop this technique, we invest...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-10-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2072-4292/8/11/892 |
| _version_ | 1798031771195932672 |
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| author | Azusa Ishizaki Yukihisa Sanada Airi Mori Mitsuo Imura Mutsushi Ishida Masahiro Munakata |
| author_facet | Azusa Ishizaki Yukihisa Sanada Airi Mori Mitsuo Imura Mutsushi Ishida Masahiro Munakata |
| author_sort | Azusa Ishizaki |
| collection | DOAJ |
| description | In aerial radiation monitoring (ARM), the air dose rate cannot be appropriately estimated under snowy conditions due to attenuation of gamma rays by the snow layer. A technique to address this issue is required for ARM to obtain enough signals for air dose rates. To develop this technique, we investigated the relationship between snow depth and ARM measurement results using ARM, laser imaging detection and ranging, and ground measurement before and after snowfall. From the measured data, the results obtained using three different correction factors were examined and compared. An appropriate correction improved the underestimation of the air dose rate. However, further improvement in the accuracy of the analysis requires accurate estimation of the snow water equivalent. |
| first_indexed | 2024-04-11T20:01:47Z |
| format | Article |
| id | doaj.art-dde5ed671af4474caa2d9402faf347aa |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-04-11T20:01:47Z |
| publishDate | 2016-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-dde5ed671af4474caa2d9402faf347aa2022-12-22T04:05:34ZengMDPI AGRemote Sensing2072-42922016-10-0181189210.3390/rs8110892rs8110892Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation MonitoringAzusa Ishizaki0Yukihisa Sanada1Airi Mori2Mitsuo Imura3Mutsushi Ishida4Masahiro Munakata5Nuclear Safety Research Center, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, JapanFukushima Environmental Safety Center, Japan Atomic Energy Agency, 45-169 Sukakeba, Kayahama-aza, Haramachi, Minamisoma, Fukushima 975-0036, JapanNuclear Safety Research Center, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, JapanFukushima Environmental Safety Center, Japan Atomic Energy Agency, 45-169 Sukakeba, Kayahama-aza, Haramachi, Minamisoma, Fukushima 975-0036, JapanFukushima Environmental Safety Center, Japan Atomic Energy Agency, 45-169 Sukakeba, Kayahama-aza, Haramachi, Minamisoma, Fukushima 975-0036, JapanNuclear Safety Research Center, Japan Atomic Energy Agency, 2-4 Shirane Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, JapanIn aerial radiation monitoring (ARM), the air dose rate cannot be appropriately estimated under snowy conditions due to attenuation of gamma rays by the snow layer. A technique to address this issue is required for ARM to obtain enough signals for air dose rates. To develop this technique, we investigated the relationship between snow depth and ARM measurement results using ARM, laser imaging detection and ranging, and ground measurement before and after snowfall. From the measured data, the results obtained using three different correction factors were examined and compared. An appropriate correction improved the underestimation of the air dose rate. However, further improvement in the accuracy of the analysis requires accurate estimation of the snow water equivalent.http://www.mdpi.com/2072-4292/8/11/892aerial radiation monitoringFukushima Daiichi nuclear power station disasterair dose rateLiDAR |
| spellingShingle | Azusa Ishizaki Yukihisa Sanada Airi Mori Mitsuo Imura Mutsushi Ishida Masahiro Munakata Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring Remote Sensing aerial radiation monitoring Fukushima Daiichi nuclear power station disaster air dose rate LiDAR |
| title | Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring |
| title_full | Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring |
| title_fullStr | Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring |
| title_full_unstemmed | Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring |
| title_short | Investigation of Snow Cover Effects and Attenuation Correction of Gamma Ray in Aerial Radiation Monitoring |
| title_sort | investigation of snow cover effects and attenuation correction of gamma ray in aerial radiation monitoring |
| topic | aerial radiation monitoring Fukushima Daiichi nuclear power station disaster air dose rate LiDAR |
| url | http://www.mdpi.com/2072-4292/8/11/892 |
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