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{"_buckets": {"deposit": "97849331-2c53-4cee-b1da-0c92ef6882e8"}, "_deposit": {"id": "4328", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4328"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004328", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2014-01"}, "bibliographicPageEnd": "98", "bibliographicPageStart": "90", "bibliographicVolumeNumber": "270", "bibliographic_titles": [{"bibliographic_title": "JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "A submarine eruption occurred off the Izu Peninsula of Japan on 13 July 1989, forming Teishi Knoll, which has a diameter of 450 m and a height of ca. 10 m above the surrounding 90-100 m deep seafloor. Immediately after the eruption, intense gas release was observed from two vents in the crater. The gas bubbling gradually decreased and apparently ceased in 1990. Given that no survey has been undertaken to examine volatile release from the crater of Teishi Knoll, we collected seawater samples at three different sites from just above the crater bottom on 17 July 2012, in order to detect signs of magmatic volatile release. Seawater samples from the crater bottom have dissolved CH4 contents and delta C-13 values higher than those of shallower (50-100 m deep) seawater samples. Total inorganic carbon contents from the bottom seawater samples are also higher, and delta C-13 and Delta C-14 values lower than those of shallower seawater samples. These data indicate the addition of minor CH4 and CO2 of hydrothermal or magmatic origin to the bottom seawater from the crater. He-3/He-4 ratios and total organic carbon data are also consistent with the leakage of magmatic fluids. The most prominent CH4 and CO2 anomalies were observed at the site located closest to one of the bubbling gas sites of the 1989 eruption. As such, volcanic gas emissions still continue today at extremely low levels, 23 years after eruption of this monogenetic volcano. The monitoring of ultra-trace amounts of chemical components in seawater is a prospective method to monitor temporal changes in magmatic activity at such submarine volcanoes. (C) 2013 Elsevier B.V. All rights reserved.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "ELSEVIER SCIENCE BV", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1016/j.jvolgeores.2013.11.017"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1872-6097", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Kenji Notsu", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Rumi Sohrin", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Hideki Wada", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Tatsuya Tsuboi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Hirochika Sumino", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Toshiya Mori", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Urumu Tsunogai", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Pedro A. Hernandez", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Yusuke Suzuki", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Ryoya Ikuta", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Kohei Oorui", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Masato Koyama", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Toshiaki Masuda", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Naoyuki Fujii", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4328", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4328", "relation": {}, "relation_version_is_last": true, "title": ["Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan"], "weko_shared_id": -1}
  1. 防災科研関係論文

Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan

https://nied-repo.bosai.go.jp/records/4328
https://nied-repo.bosai.go.jp/records/4328
d1da2cc5-7237-4a5a-a314-3c7ae2b87105
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Leakage of magmatic-hydrothermal volatiles from a crater bottom formed by a submarine eruption in 1989 at Teishi Knoll, Japan
言語
言語 eng
著者 Kenji Notsu

× Kenji Notsu

en Kenji Notsu

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Rumi Sohrin

× Rumi Sohrin

en Rumi Sohrin

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Hideki Wada

× Hideki Wada

en Hideki Wada

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Tatsuya Tsuboi

× Tatsuya Tsuboi

en Tatsuya Tsuboi

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Hirochika Sumino

× Hirochika Sumino

en Hirochika Sumino

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Toshiya Mori

× Toshiya Mori

en Toshiya Mori

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Urumu Tsunogai

× Urumu Tsunogai

en Urumu Tsunogai

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Pedro A. Hernandez

× Pedro A. Hernandez

en Pedro A. Hernandez

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Yusuke Suzuki

× Yusuke Suzuki

en Yusuke Suzuki

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Ryoya Ikuta

× Ryoya Ikuta

en Ryoya Ikuta

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Kohei Oorui

× Kohei Oorui

en Kohei Oorui

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Masato Koyama

× Masato Koyama

en Masato Koyama

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Toshiaki Masuda

× Toshiaki Masuda

en Toshiaki Masuda

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Naoyuki Fujii

× Naoyuki Fujii

en Naoyuki Fujii

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抄録
内容記述タイプ Other
内容記述 A submarine eruption occurred off the Izu Peninsula of Japan on 13 July 1989, forming Teishi Knoll, which has a diameter of 450 m and a height of ca. 10 m above the surrounding 90-100 m deep seafloor. Immediately after the eruption, intense gas release was observed from two vents in the crater. The gas bubbling gradually decreased and apparently ceased in 1990. Given that no survey has been undertaken to examine volatile release from the crater of Teishi Knoll, we collected seawater samples at three different sites from just above the crater bottom on 17 July 2012, in order to detect signs of magmatic volatile release. Seawater samples from the crater bottom have dissolved CH4 contents and delta C-13 values higher than those of shallower (50-100 m deep) seawater samples. Total inorganic carbon contents from the bottom seawater samples are also higher, and delta C-13 and Delta C-14 values lower than those of shallower seawater samples. These data indicate the addition of minor CH4 and CO2 of hydrothermal or magmatic origin to the bottom seawater from the crater. He-3/He-4 ratios and total organic carbon data are also consistent with the leakage of magmatic fluids. The most prominent CH4 and CO2 anomalies were observed at the site located closest to one of the bubbling gas sites of the 1989 eruption. As such, volcanic gas emissions still continue today at extremely low levels, 23 years after eruption of this monogenetic volcano. The monitoring of ultra-trace amounts of chemical components in seawater is a prospective method to monitor temporal changes in magmatic activity at such submarine volcanoes. (C) 2013 Elsevier B.V. All rights reserved.
言語 en
書誌情報 en : JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH

巻 270, p. 90-98
出版者
言語 en
出版者 ELSEVIER SCIENCE BV
ISSN
収録物識別子タイプ EISSN
収録物識別子 1872-6097
DOI
関連識別子 10.1016/j.jvolgeores.2013.11.017
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