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  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 55
  4. 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. 55
  5. 4

伊豆半島東部地域の異常地殻活動に伴う全磁力変化(第三報) : 1980年伊豆半島東方沖地震

https://doi.org/10.15083/0000033057
https://doi.org/10.15083/0000033057
a51784da-b1f8-432b-aa87-2d555426f788
名前 / ファイル ライセンス アクション
ji0554013.pdf ji0554013.pdf (846.1 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-05-30
タイトル
タイトル 伊豆半島東部地域の異常地殻活動に伴う全磁力変化(第三報) : 1980年伊豆半島東方沖地震
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 10.15083/0000033057
ID登録タイプ JaLC
その他のタイトル
その他のタイトル Change in the Geomagnetic Total Force Intensity Associated with the Anomalous Crustal Activity in the Eastern Part of the Izu Peninsula (3) : The East off Izu Peninsula Earthquake of 1980
著者 笹井, 洋一

× 笹井, 洋一

WEKO 128931

笹井, 洋一

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石川, 良宣

× 石川, 良宣

WEKO 128932

石川, 良宣

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著者別名
識別子Scheme WEKO
識別子 128933
姓名 Sasai, Yoichi
著者別名
識別子Scheme WEKO
識別子 128934
姓名 Ishikawa, Yoshinobu
著者所属
著者所属 地震研究所
抄録
内容記述タイプ Abstract
内容記述 This is a report of unsuccessful detecting of the seismomagnetic effect associated with the East off Izu Peninsula Earthquake of M 6.7 on June 29, 1980. Localities of observation points in and around the Izu Peninsula are shown in Fig. 1. Total field changes at the time of the earthquake are given in Fig. 2 for stations in the eastern part of the peninsula. At the nearest stations, i.e. HAT and YSD, we see some gap-like changes before and after the quake. This change turned out, however, to be an apparent one caused by power failure to the direct electric current railways. As shown in Fig. 3, magnetograms at YSD and HAT are greatly affected by electric car noises. Records at four stations on Izu-Oshima Island are compared with reference station KWZ and depicted in Fig. 4. The total field jump of 2 gammas or so at NOM might be caused by the resional discrepany of daily variations between the Izu-Oshima Island and the KWZ station, because we recognize no significant step-like change at other continuously recording stations. Local changes in the total field as revealed by the repeated surveys were very small-practically zero in view of the accuracy of the survey data-during the period from Mar. to July, 1980, as shown in Fig. 5. This is in harmony with the continuous observations at four temporary stations as shown in Fig. 7. The seismomagnetic effect possibly accompanying the M 6.7 earthquake is computed for a fault model based upon the studies by SHIMAZAKI (1980), KARAKAMA et al. (1980) and Hatori (1980). The solution for a vertical rectangular strike-slip fault by Sasai (1980) is employed. The model calculations indicate that we could expect no detectable total field change on land. A minor decrease in the total intensity at SGH and HAT is found during the period from Sept. to Dec, 1979 (Fig. 8), which might have some causal relation to the anomalous land uplift along the east coast during the same period. The present observation has been conducted under the cooperative project of the geomagnetic group for researches in the Izu Peninsula (RIKITAKE et al. 1980).
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 55, 号 4, p. 1101-1113, 発行日 1981-03-31
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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