ログイン
言語:

WEKO3

  • トップ
  • ランキング
To
lat lon distance
To

Field does not validate



インデックスリンク

インデックスツリー

メールアドレスを入力してください。

WEKO

One fine body…

WEKO

One fine body…

アイテム

  1. 131 地震研究所
  2. 東京大学地震研究所彙報
  3. 54
  4. 1
  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. 54
  5. 1

1973年浅間火山噴火に伴う爆発地震について : (第1報)スペクトル解析

https://doi.org/10.15083/0000033119
https://doi.org/10.15083/0000033119
c367376c-d314-4d14-90f5-3968ec1d8267
名前 / ファイル ライセンス アクション
ji0541008.pdf ji0541008.pdf (1.4 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2008-05-30
タイトル
タイトル 1973年浅間火山噴火に伴う爆発地震について : (第1報)スペクトル解析
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 10.15083/0000033119
ID登録タイプ JaLC
その他のタイトル
その他のタイトル Explosion Earthquakes Associated with the 1973 Eruptions of Asama Volcano : (Part I) Spectral Studies
著者 今井, 博

× 今井, 博

WEKO 129161

今井, 博

Search repository
行田, 紀也

× 行田, 紀也

WEKO 129162

行田, 紀也

Search repository
小山, 悦郎

× 小山, 悦郎

WEKO 129163

小山, 悦郎

Search repository
著者別名
識別子Scheme WEKO
識別子 129164
姓名 Imai, Hiroshi
著者別名
識別子Scheme WEKO
識別子 129165
姓名 Gyoda, Noriya
著者別名
識別子Scheme WEKO
識別子 129166
姓名 Koyama, Etsuro
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 Asama Volcano, located in the central part of Honshu, commenced an eruption at the summit crater on Feb. 1 in 1973 after 11 years'quiescence and a series of explosive eruptions continued until April 26 of the same year. The data of three component seismograms analysed in this paper were recorded by long-period seismographs (T0 = 5.0 sec) at the seismic station NAKANOSAWA located 4.2 km east of the summit crater and were registered on smoked paper recording drums at the Asama Volcano Observatory. Power spectral analyses were carried out separately, by use of the Maximum Entropy method and the Fast Fourier Transform method for both the initial parts and the later parts, of the explosion earthquakes that exceeded 1015 ergs in seismic energy. The results of the spectral studies are as follows: 1) As to the initial parts (5 sec from on-set) of seismic waves, N-S components prevail in longer periods against E-W components. 2) As to the later parts (51.2 sec after 10 sec from on-set), the results are contrary to 1). Moreover, E-W components of Feb. 1 and Mar. 10 resemble each other. The other components (U-D, N-S), however, are different from each other. Particularly, it should be emphasized that the maximum value of the spectrum for the U-D component is found at about 0.2 Hz on Feb. 1 but at about 0.7-1.3 Hz on Mar. 10. 3) Sweep maximum amplitudes (or running diagrams) for E-W components have splittings at about 1.4-1.6 sec. 4) Predominant periods of the initial part of seismic waves on running diagrams change and/or separate into other periods. As the results of these analyses, it is recognized that the explosion earthquake on Feb. 1 is different from others on the mechanism, particularly, from that on Mar. 10. In addition, it is characteristic that the spectra of the later parts for E-W components, which are in a radial direction from the summit crater, are stable in shape. It is obvious that these results give some clue to the knowledge of the mechanism of explosion earthquakes, and of eruptions.
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 54, 号 1, p. 161-186, 発行日 1979-11-30
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
戻る
0
views
See details
Views

Versions

Ver.1 2021-03-01 21:56:59.209449
Show All versions

Share

Mendeley Twitter Facebook Print Addthis

Cite as

エクスポート

OAI-PMH
  • OAI-PMH JPCOAR 2.0
  • OAI-PMH JPCOAR 1.0
  • OAI-PMH DublinCore
  • OAI-PMH DDI
Other Formats
  • JSON
  • BIBTEX

Confirm


Powered by WEKO3


Powered by WEKO3