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  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 24
  4. 1-4
  1. 0 資料タイプ別
  2. 30 紀要・部局刊行物
  3. 東京大学地震研究所彙報
  4. 24
  5. 1-4

19. 櫻島火山の噴煙雲による尖端放電電流

https://doi.org/10.15083/0000034309
https://doi.org/10.15083/0000034309
42de77b1-2490-424f-8446-9bf67742a10a
名前 / ファイル ライセンス アクション
ji0241019.pdf ji0241019.pdf (824.3 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-06-06
タイトル
タイトル 19. 櫻島火山の噴煙雲による尖端放電電流
言語 ja
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 10.15083/0000034309
ID登録タイプ JaLC
その他のタイトル
その他のタイトル 19. The Change in Point-Discharge Current due to the Volcanic Smoke of Sakura-jima
著者 永田, 武

× 永田, 武

WEKO 133397

永田, 武

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平尾, 邦雄

× 平尾, 邦雄

WEKO 133398

平尾, 邦雄

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福島, 圓

× 福島, 圓

WEKO 133399

福島, 圓

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高橋, 忠

× 高橋, 忠

WEKO 133400

高橋, 忠

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著者別名
識別子Scheme WEKO
識別子 133401
姓名 Nagata, Takesi
著者別名
識別子Scheme WEKO
識別子 133402
姓名 Hirao, Kunio
著者別名
識別子Scheme WEKO
識別子 133403
姓名 Fukushima, Madoka
著者別名
識別子Scheme WEKO
識別子 133404
姓名 Takahasi, Tadasi
著者所属
著者所属 地震研究所
著者所属
著者所属 地球物理學敎室
抄録
内容記述タイプ Abstract
内容記述 The observation of point-discharge current was carried out during the period of from March 25 to April 17. We found three types of anomalous changes, that is, (1) the change, which suddenly commenced and gradually recovered, (2) ones that gradually commenced and suddenly rocovered, and (3) ones that commenced and recovered in a very short time, about in a few minutes. While on the other hand, corresponding .to the above mentioned three anomalous changes we observed the following three conditions respectly : the tranceferance of the belt of volcanic smoke from west to east ; the tranceferance of the belt from east to west ; the falling of ashes notwithstanding that there was no smoke overhead. Moreover, we observed that the eastern edge of the smoke belt was everytime thicker nan the other cdge. This phenomenon will be explained as follows. When the smoke is drifted by the wind southward from the crater, the charged particles shifted from its eourse due to the force caused by the vertical component of the goomagnetic field, resulting that the smoke becomes concentrated in the east edge of the belt. From this assumption mentioned above, the first and the second anomalous changes will be explained obviously. The short period change (the third type of anomaly) will be explained as the anomalous, increasing of the space charge caused by the falling ashes. They were observed while the voloanic smoke belt had come near the zenith. While, the activity of the volcano has the period of few minute, 6 minutes in average. Hence, we believe that the mass of smoke, having electric charge of 0.3 to 0.5 Coulombs, are drifted successively on the wind from the crater. We hope to carry out, in future, the more direct measurement of the preperties of the volcanic smoke.
書誌情報 東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo

巻 24, 号 1-4, p. 221-227, 発行日 1948-06-30
ISSN
収録物識別子タイプ ISSN
収録物識別子 00408972
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00162258
フォーマット
内容記述タイプ Other
内容記述 application/pdf
日本十進分類法
主題Scheme NDC
主題 453
出版者
出版者 東京大学地震研究所
出版者別名
Earthquake Research Institute, University of Tokyo
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