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昭和基地で観測した微小地震
https://doi.org/10.15094/00007617
https://doi.org/10.15094/000076175d60061d-8033-43db-9f99-6177f859ea77
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00002476617 (2.9 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1971-03-01 | |||||
タイトル | ||||||
タイトル | 昭和基地で観測した微小地震 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | MICRO-EARTHQUAKES OBSERVED AT SYOWA STATION, ANTARCTICA | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00007617 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | ショウワキチ デ カンソク シタ ビショウ ジシン | |||||
著者名(日) |
神沼, 克伊
× 神沼, 克伊 |
|||||
著者名(英) |
KAMINUMA, Katsutada
× KAMINUMA, Katsutada |
|||||
著者所属(日) | ||||||
東京大学地震研究所 | ||||||
著者所属(英) | ||||||
en | ||||||
Earthquake Research Institute, University of Tokyo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Small shocks like micro-earthquakes are recorded frequently at Syowa Station. The small shocks are roughly classified into two types according to the initial motion. One has a sharp initial motion (type I) and the other has a weak one (type II). Some shocks of type I have a clear S phase and the rest have a small S phase. A swarm of type II shocks is recorded once or twice a year. The swarm occurs only in the summer season. With the data of February to December of 1969, ISHIMOTO-IIDA constant of the shocks of type II was calculated as m=1.99 using UTSU'S formula. It is established by MOGI that "m" increases with the degree of heterogeneity of the medium and also with the degree of spatial variation in the stress distribution of the field. The movement of the continental ice is active in the summer season and the structure may become heterogeneous. Thus, it is concluded that the shocks of type II are iceshocks (or icequakes). On the other hand, if a natural earthquake occurs around Syowa Station, its "m" is estimated at about 1.4, because the area belongs to the geological province of Pre-Cambrian gneiss, a part of the east Antarctic shield which is one of the non-seismic regions on the earth. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00181831 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00857289 | |||||
書誌情報 |
南極資料 巻 40, p. 65-73, 発行日 1971-03 |
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国際十進分類法 | ||||||
主題Scheme | UDC | |||||
主題 | 550.34:551.2 | |||||
出版者 | ||||||
出版者 | 国立極地研究所 |