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雲仙周辺における土壌CO_2を利用した火山活動の影響範囲の推定に関する研究
https://doi.org/10.18999/sumrua.13.105
https://doi.org/10.18999/sumrua.13.1056da8f2e8-101d-400f-9df6-3d5ad85f4bb5
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2010-06-01 | |||||
タイトル | ||||||
タイトル | 雲仙周辺における土壌CO_2を利用した火山活動の影響範囲の推定に関する研究 | |||||
その他のタイトル | ||||||
その他のタイトル | Spatial estimation of volcanic effect using soil air CO_2 around the Unzen volcano | |||||
著者 |
高橋, 浩
× 高橋, 浩× Takahashi, Hiroshi A.× 風早, 康平× Kazahaya, Kohei× 篠原, 宏志× Shinohara, Hiroshi× 中村, 俊夫× Nakamura, Toshio |
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権利 | ||||||
権利情報 | 名古屋大学年代測定資料研究センター | |||||
権利 | ||||||
権利情報 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
抄録 | ||||||
内容記述 | In the present study, the carbon isotopic approach was used for identification of magmatic contribution in soil air CO_2. Here we represent the CO_2 concentration and carbon isotopic composition in soil air in order to estimate the effect from Unzen Volcano in the Shimabara Peninsula. We took soil air through a sampling tube pricked at 30cm depth below the land surface, and measured concentration of carbon dioxide by the GASTEC tube. For the isotopic analysis, soil air was sampled in a glass reservoir (100ml : for stable carbon isotopic measurement) or an aluminized plastic bag (3 litters : for radiocarbon measurement). CO_2 was collected from the sampled soil air under the vacuum at the laboratory, and its stable carbon isotopic composition was measured by the IR-MS. Some samples measured radiocarbon concentration by the accelerator mass spectrometry at the Nagoya University. The filed observations were carried out in September 2001. We had two traverses (500-600m) across the fault near the USDP-2 site and embouchure of the Waren River. We also took bubbles in the spring water at the Waren River and the smoke air of Heiseishin-zan volcano. We found that several points had the high CO_2 concentration in the two traverses of the USDP-2 and the Waren River. Some of them showed the relatively higher value of stable carbon isotopic ratio. This indicates that the magmatic CO_2 might be brought to the land surface in the area of Unzen Graven. Moreover, radiocarbon technique tells us the stable carbon isotopic ratio of magmatic CO_2 and contributions of magmatic, biogenic and atmospheric CO_2. The value of stable carbon isotopic ratio was estimated to be -5.4per-mil. The proportions of respective contributions were 75 : 0 : 25 for smoke air, 60 : 40 : 0 in soil air nearby the Waren River spring and 0 : 30 : 70 in soil air at 500m away from the Waren River. | |||||
内容記述タイプ | Abstract | |||||
内容記述 | ||||||
内容記述 | 第14回名古屋大学タンデトロン加速器質量分析計シンポジウム(平成13 (2001)年度)報告 | |||||
内容記述タイプ | Other | |||||
出版者 | ||||||
出版者 | 名古屋大学年代測定資料研究センター | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.18999/sumrua.13.105 | |||||
ID登録タイプ | JaLC | |||||
関連情報 | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | URI | |||||
関連識別子 | http://ci.nii.ac.jp/naid/110000475717/ | |||||
書誌情報 |
名古屋大学加速器質量分析計業績報告書 巻 13, p. 105-109, 発行日 2002-03 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher |