Analysis of the Environmental Transition of Ohmura bay Closed Water Area by means of Measuring Environmental Radioactivity and Using the Environmental Information Analyzing System

利用环境放射性测量和环境信息分析系统分析大村湾封闭水域环境变迁

• 批准号: 12680524
• 负责人: TAKATSUJI Toshihiro
• 金额: $ 0.77万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680524/
• 关键词: Environmental Radioactivity; GIS; age of sediment; vital statics

The final purpose of the research is to clarify the relation between the activity of humans and the distribution of environmental polution markers including harmful heavy metals of the area surrounding Ohmura bay. The calibration of the age of sediment at the bottom of Ohmura bay was done by means of the Pb-210 radioactivity measurement. The measurement also revealed the sedimentation speed of soils and the Pb-210. Cs-137 global fallout was also detected and evaluated originated from nuclear tests and accidents such as the accident of the Chernobyl nuclear power station.Many of technical problem to resolve was found to evaluate the Pb-210. The measurement of the environmental pollution markers is the future task. We are planning to do PIXE analysis of heavy metals using an accerelator, and combine many data such as vital statics or echonomical activities around the Ohmura bay using GIS system.

研究的最终目的是阐明人类活动与大村湾周边地区包括有害重金属在内的环境污染标志物分布之间的关系。大村湾底沉积物年龄的标定是通过Pb-210放射性测量完成的。测量还揭示了土壤和Pb-210的沉降速度。对核试验和切尔诺贝利核电站事故等核事故产生的Cs-137全球沉降物也进行了检测和评价，对Pb-210的评价还存在许多技术问题。环境污染标志物的测定是今后的研究课题。我们计划使用加速器进行重金属的PIXE分析，并使用GIS系统将大村湾周围的重要静态或经济活动等许多数据联合收割机结合起来。

项目成果

Takatsuji, T., Yoshikawa, I., Hoshi, M., Takada,J., Endo, S.: "Effect of Hypergravity to Radiation Induced Mutation"Space Utilization Research. (Written in Japanese) 17. 66-68 (2001)

Takatsuji, T.、Yoshikawa, I.、Hoshi, M.、Takada,J.、Endo, S.：“超重力对辐射诱发突变的影响”空间利用研究。

吉川 勲.高辻 俊宏: "JSUP宇宙環境利用の展望(第6章を分担)"財団法人 宇宙環境利用推進センター. 11 (2001)

Isao Yoshikawa. Toshihiro Takatsuji：“JSUP 空间环境利用的展望（第 6 章）” 空间环境利用促进中心 11（2001 年）。

Takada, J., Hoshi, M., Yamamoto, M., Nagatomo, T., Takatsuji, T., Yoshikawa, I., Gusev, B. I., Sakerbaev, A. K: "External Radiation Dose of Residents near the Semipalatinsk Nuclear Test Site"Nagasaki Igakukai Zasshi. (Written in Japanese) 75. 192-196 (200

Takada, J.、Hoshi, M.、Yamamoto, M.、Nagatomo, T.、Takatsuji, T.、Yoshikawa, I.、Gusev, B. I.、Sakerbaev, A. K：“塞米巴拉金斯克核电站附近居民的外部辐射剂量

Takatsuji, T., Yoshikawa, I., Hoshi, M., Takada, J., Endo, S.: "Effect of Hypergravity to Radiation Induced Mutation"Biological Sciences in Space. (Written in Japanese) 14. 226-227 (2000)

Takatsuji, T.、Yoshikawa, I.、Hoshi, M.、Takada, J.、Endo, S.：“超重力对辐射诱发突变的影响”太空生物科学。

Kinukawa,N.,Nakamura,T. et al.: "The impact of covariate imbalance on the size of the logrank test in randomized clinical trials"Statistics Medicine. 19. 1955-1967 (2000)

鬼怒川，N.，中村，T.