著者

千葉 茂樹 木村 純一

出版者

一般社団法人 日本鉱物科学会

雑誌

岩石鉱物科学 (ISSN:1345630X)

巻号頁・発行日

vol.30, no.3, pp.126-156, 2001 (Released:2008-08-30)

参考文献数

54

被引用文献数

2 2

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Bandai volcano is located in the southern part of Tohoku-Honshu arc, Japan, and has been active from about 300 ka. Most recently, the volcano erupted in 1888 and the phreatic eruption caused volcanic body collapse and produced huge debris avalanche deposit. Here we present new data of the tephrochronology and volcanic geology of Bandai volcano and discuss its growth history. The tephra-loam association in this area consists of the Hayama and the Mineyama Loam Formations. Sixty-three layers of tephra are recognized in the Mineyama Loam Formation, and seventy-seven layers of tephra in the Hayama Loam Formation. The volcanic activity is classified into seven stages based on tephrochronology: Stage 1: 300 ka≤(presumed age), Stage 2: 300-280 ka, Stage 3: 250-230 ka, Stage 4: 170-85 ka, Stage 5: 75-57 ka, Stage 6: 36-28 ka, Stage 7: 24-0 ka. Pyroxene andesite lavas and tephras are eruptions of Bandai volcano throughout its activity, and more than 13 large avalanche deposits are found in Stages 2, 5, 6, and 7 including 1888 debris avalanche. Modes of eruptions were almost sub-plinian with lava effusions from Stages 2 to 3, whereas sub-plinian was subsequently followed by vulcanian with lava effusions from Stages 5 to 7. Sub-plinian eruptions occurred in the earliest phase of Stages 5, 6, and pumice falls with occasional pumice flows were associated. Stage 4 consists of two eruption types. Large debris avalanches were commonly produced related with the sub-plinian eruption, except for 1888 eruption. Bandai volcano is a complex of at least five stratocones, and resurge of volcanic activity caused collapse of pre-existed volcanic body. This cyclic feature is considered to be the behavior of the volcano.

著者

千葉 茂樹 木村 純一

出版者

日本鉱物科学会

雑誌

岩石鉱物科学 (ISSN:1345630X)

巻号頁・発行日

vol.30, no.3, pp.126-156, 2001-05-30

被引用文献数

4 2

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Bandai volcano is located in the southern part of Tohoku-Honshu arc, Japan, and has been active from about 300 ka. Most recently, the volcano erupted in 1888 and the phreatic eruption caused volcanic body collapse and produced huge debris avalanche deposit. Here we present new data of the tephrochronology and volcanic geology of Bandai volcano and discuss its growth history. The tephra-loam association in this area consists of the Hayama and the Mineyama Loam Formations. Sixty-three layers of tephra are recognized in the Mineyama Loam Formation, and seventy-seven layers of tephra in the Hayama Loam Formation. The volcanic activity is classified into seven stages based on tephrochronology: Stage 1: 300 ka≤(presumed age), Stage 2: 300-280 ka, Stage 3: 250-230 ka, Stage 4: 170-85 ka, Stage 5: 75-57 ka, Stage 6: 36-28 ka, Stage 7: 24-0 ka. Pyroxene andesite lavas and tephras are eruptions of Bandai volcano throughout its activity, and more than 13 large avalanche deposits are found in Stages 2, 5, 6, and 7 including 1888 debris avalanche. Modes of eruptions were almost sub-plinian with lava effusions from Stages 2 to 3, whereas sub-plinian was subsequently followed by vulcanian with lava effusions from Stages 5 to 7. Sub-plinian eruptions occurred in the earliest phase of Stages 5, 6, and pumice falls with occasional pumice flows were associated. Stage 4 consists of two eruption types. Large debris avalanches were commonly produced related with the sub-plinian eruption, except for 1888 eruption. Bandai volcano is a complex of at least five stratocones, and resurge of volcanic activity caused collapse of pre-existed volcanic body. This cyclic feature is considered to be the behavior of the volcano.

著者

スターラ・ソーズソン再話 リーザ・ルンガ‐ラーセン文 メアリー・アゼアリアン絵 千葉茂樹訳

出版者

BL出版

巻号頁・発行日

2004

著者

千葉 茂樹 佐藤 公

出版者

地学団体研究会

雑誌

地球科学 (ISSN:03666611)

巻号頁・発行日

vol.63, no.2, pp.77-93, 2009

参考文献数

15

被引用文献数

1

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1888年7月15日の磐梯火山噴火および災害の写真は,福島県立図書館・福島県立博物館・国立科学博物館・宮内庁・学習院大学に保管されている.2007年11月,佐藤は,宮内庁において,1888年磐梯火山噴火の写真を9枚再発見した.千葉は,写真9枚をデジタル復元し、1〜7を行った.1.復元画像から,撮影位置を特定し,噴火当時の写真と現在の様子を比較した.2.画像から裏磐梯の湖沼群形成上重要なデータを得た.3.写真の地域で,山体崩壊物が,岩屑なだれか泥流かを知ることができた.4.写真の建物の倒れ方から,爆風の方向や大きさを推定した.5.撮影者を推定し,遠藤陸郎氏7枚,W.K.Burton氏1枚,撮影者不明1枚とした.6.遠藤陸郎氏撮影の写真全28枚の所在(福島県立図書館21枚,宮内庁7枚)を特定した.7.写真上の白文字を分析し、福島県立図書館と宮内庁に分割保管されている遠藤陸郎氏撮影の写真について,両者の関係を分析した.