書誌事項
- タイトル別名
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- Shallow P-wave Velocity Structure of Shirane Pyroclastic Cone, Kusatsu-Shirane Volcano Derived from a Controlled Seismic Experiment
- ジンコウ ジシン タンサ ヨリ スイテイ シタ クサツ シラネ カザン シラネ カサイキュウ ヒョウソウ ノ Pハ ソクド コウゾウ
- 公開日
- 2005
- 資源種別
- journal article
- DOI
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- 10.18940/kazan.50.1_9
- 公開者
- 特定非営利活動法人 日本火山学会
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説明
P-wave velocity structure at a summit area of Kusatsu-Shirane volcano is investigated by using first arrival time data of a controlled seismic experiment conducted in 2003. The objectives of this study are to reveal a shallow P-wave velocity structure of Shirane pyroclastic cone and to make correlation of the resultant velocity model to geological information. The first arrival times for two dynamite shots recorded by 59 temporal seismic stations are used for investigating a two-layered velocity model. The first layer velocity is estimated by using arrivals at stations close to a shot point. The second layer velocity and depths of the interface are inferred by the time-term analysis. Estimated velocities of the first and second layers are 1.1km/s and 2.9km/s, respectively. Thickness of the first layer varies from almost 0m at surface exposures of lavas to about 100m at the summit of the pyroclastic cone. The first layer is interpreted as pyroclastic deposits covering the surface of the Shirane pyroclastic cone and the second is the uppermost subsurface lavas, by comparing to surface and borehole geological information and P-wave velocity of borehole core samples.
収録刊行物
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- 火山
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火山 50 (1), 9-16, 2005
特定非営利活動法人 日本火山学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001204303702016
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- NII論文ID
- 110003041522
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- NII書誌ID
- AN10512786
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- ISSN
- 21897182
- 04534360
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- NDL書誌ID
- 7266455
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- 本文言語コード
- ja
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- NDLサーチ
- CiNii Articles
- KAKEN
- Crossref
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- 抄録ライセンスフラグ
- 使用不可
