Search Results 1-20 of 2241

  • Lithological study of ancient roof tiles in the Gyokusen-kan Collection of the Kyushu University Museum, Japan  [in Japanese]

    飯塚 義之 , 主税 和賀子

    九州大学総合研究博物館が所蔵する玉泉館資料の古代瓦から,飛鳥~平安時代に相当する瓦資料32点を選び,内部断面の電子顕微鏡装置(EPMA)による岩相分析を行った.瓦は部分的に内部が熔解している熔結組織と,内部が焼き固まっている焼結組織を呈するものに分けられる.焼結組織をもつ瓦断面からは,残存鉱物として,花崗岩由来の石英,斜長石,曹長石,正長石,黒雲母,白雲母,火山岩由来の火山ガラス,斜長石,黒雲母が …

    九州大学総合研究博物館研究報告 (18), 15-37, 2021-03-31

    IR  DOI 

  • Eruption Types and Conduit Dynamics of Kukusan and Genteng Volcanoes of the Ijen Volcanic Complex, Indonesia

    Mitsuoka Takeru , Toramaru Atsushi , Harijoko Agung , Haryo Edi Wibowo

    … Kukusan and Genteng volcanoes, which are monogenetic volcanoes in the Ijen caldera complex in Indonesia, produced explosive eruptions of mafic magma. …

    Memoirs of the Faculty of Science, Kyushu University. Series D, Earth and planetary sciences 35(1), 1-17, 2021-03-26

    IR  DOI 

  • Deposits of Toya caldera-forming eruption in boring cores at Kyowa and Rankoshi towns  [in Japanese]

    Amma-MIYASAKA Mizuho , NAKAGAWA Mitsuhiro

    Geophysical bulletin of Hokkaido University (84), 1-10, 2021-03-26

    IR  DOI 

  • Stratigraphy and Lithologic Features of Borehole Core from Sobetsu Observation Well, Usu Volcano, Hokkaido, Japan  [in Japanese]

    長井 雅史 , 大島 弘光 , 棚田 俊收 , 吉本 充宏 , 松本 亜希子 , 山本 英二 , 棚田 俊收 , 檀原 徹 , 岩野 英樹

    … The lower part is interpreted to be a deposit of gravelly delta that occurred on the south margin of Toya caldera. …

    防災科学技術研究所研究資料 = Technical Note of the National Research Institute for Earth Science and Disaster Resilience (456), 1-36, 2021-02-16

    IR  DOI 

  • Statistical analysis of cross drainage ditch clogging along spur roads in the Shirasu area, southern Kyushu, Japan.  [in Japanese]

    Iuchi Yoshihito , Oka Masaru , Teramoto Yukiyoshi , Shimokawa Eturo , Inoue Eiji

    <p>鹿児島県内に開設された作業道247 路線(1,298 箇所)の横断排水溝閉塞を分析した。シラス地域の作業道はシラス地域以外の作業道と比較して横断排水溝を500 m当たり約3倍多く設置しているが,経過年数にかかわらず,平均閉塞率は高くなっていた。また、どの地域の作業道でも横断排水溝設置後,2 年目から急激に閉塞が進んでいる状況であった。そして,経過年数4年目以降は地域に関わらず,平 …

    Journal of The Japan Forest Engineering Society 36(2), n/a, 2021

    J-STAGE 

  • The mass balance amplitude of glaciers in the northern Japanese Alps  [in Japanese]

    Arie Kenshiro , Narama Chiyuki , Fukui Kotaro , Iida Hajime , Yamamoto Ryohei

    <p><b>1.はじめに</b></p><p> 飛騨山脈北部では,2012年以降七つの氷河が確認されている(有江ら,2019など).氷河の形成と変化は,降雪を主とする涵養と融解を主とする消耗の上に成り立つ質量収支の結果であり,氷河の質量収支変化の要因を理解するには,冬期収支(涵養)と夏期収支(消耗)の測定が必要である.また,冬期収支と夏期 …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2021s(0), 60, 2021

    J-STAGE 

  • The Mechanism of Local Wind "Matsubori-kaze" and Relationships with Cold Air Pool Formed in Aso Caldera  [in Japanese]

    Nakamura Shingo , Kusaka Hiroyuki

    <p>熊本県北東部の阿蘇カルデラに存在する峡谷(立野峡谷)では峡谷からカルデラの外にかけて強い東風(まつぼり風)が吹くことが知られている。まつぼり風は発生要因からおろし風型と冷気外出流型の2タイプに分けられる。本研究では、冷気外出流型のまつぼり風(以下、「まつぼりのⅡ型」とする。)について、地上観測及び、GPSゾンデを用いたカルデラ内の鉛直観測からそのメカニズム及び鉛直構造の解明を目的 …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2021s(0), 182, 2021

    J-STAGE 

  • Development of the Izu-Oshima Pre-caldera Volcano examined by lacustrine deposits and tephras around the Funoh-Falls in the east coast region, Izu-Oshima Island, Japan  [in Japanese]

    Suzuki Takehiko , Terayama Satoshi

    <p><b>はじめに </b>伊豆大島は伊豆・小笠原弧北部の火山として最も活動度の高い火山のひとつである.本火山では頻繁に噴火が発生し,過去1800年間において12回の大規模なマグマ噴火が発生した.この期間はカルデラ形成・後カルデラ火山とよばれその詳細な噴火史が編まれてきた(Nakamura 1964;川辺 1998; 2012など).このため伊豆大島は活動史が …

    Proceedings of the General Meeting of the Association of Japanese Geographers 2021s(0), 165, 2021

    J-STAGE 

  • Geology and Formation History of Tateno Gorge at the Western Edge of Aso Caldera, Japan  [in Japanese]

    WATANABE Kazunori , HONDA Keiichi , HARA Kotaro , MIYABUCHI Yasuo

    … <p>Aso Volcano in central Kyushu, SW Japan, is one of the largest caldera volcanoes in the world. … Aso caldera, 25 km north-south and 18 km east-west, was formed by four gigantic ignimbrite eruptions: Aso-1 (270 ka), Aso-2 (140 ka), Aso-3 (120 ka) and Aso-4 (90 ka). … The only outlet of the caldera, named as Tateno gorge, is located at the western edge of the caldera. …

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN 66(1), 21-34, 2021

    J-STAGE 

  • The Taupō Eruption Sequence of AD 232 ± 10 in Aotearoa New Zealand: A Retrospection  [in Japanese]

    LOWE David J. , PITTARI Adrian

    <p> 西暦232 ± 10年の晩夏にニュージーランド北島タウポ火山で起こった噴火は,過去5,000年間において地球上で起こった噴火のなかでもっとも強力なものであった。噴火は数日から数週間継続し,5つの明確な降下火砕堆積物(ユニットY1~Y5)に続いて,非常に爆発的な噴火による低アスペクト比イグニンブライト(ユニットY6)が堆積した。降下火砕堆積物の内,ユニットY1,Y3およびY4は水 …

    Journal of Geography (Chigaku Zasshi) 130(1), 117-141, 2021

    J-STAGE 

  • Surface Elevation Variations on Lachman II Debris-covered Glacier (Ice-cored Rock Glacier), James Ross Island, Antarctic Peninsula, and Its Responses to Recent Climate Change  [in Japanese]

    FUKUI Kotaro , SONE Toshio , STRELIN Jorge A. , MORI Junko

    <p> James Ross Island, Antarctic Peninsula, has recently experienced severe climate change: warming from the 1970s until the early 2000s and cooling from the early 2000s until around 2014. Lachm …

    Journal of Geography (Chigaku Zasshi) 130(1), 27-41, 2021

    J-STAGE 

  • Planarized Nb 4-Layer Fabrication Process for Superconducting Integrated Circuits and Its Fabricated Device Evaluation

    NAGASAWA Shuichi , SEGA Naonori , MIZUGAKI Yoshinao , MYOREN Hiroaki , TERAI Hirotaka , HIDAKA Mutsuo , YOSHIKAWA Nobuyuki , FUJIMAKI Akira , TANAKA Masamitsu , TAKEUCHI Naoki , YAMANASHI Yuki , MIYAJIMA Shigeyuki , CHINA Fumihiro , YAMAE Taiki , YAMAZAKI Koki , SOMEI Yuta

    … <p>We developed a Nb 4-layer process for fabricating superconducting integrated circuits that involves using caldera planarization to increase the flexibility and reliability of the fabrication process. …

    IEICE Transactions on Electronics, 2021

    J-STAGE 

  • Mechanism of the Grabens that formed in the Aso Caldera during the 2016 Kumamoto Earthquake  [in Japanese]

    YASUDA Susumu , OHBO Naoto , SHIMADA Masanobu , CHIBA Tatsuro , NAGASE Hideo , MURAKAMI Satoshi , SENNA Shigeki , KITADA Naoko , ISHIKAWA Keisuke

    <p>2016年熊本地震では阿蘇カルデラにおいて特殊な帯状の陥没が多く発生し,住宅や道路,上下水道,農地,護岸が甚大な被害を受けた.その発生のメカニズムを研究するため,種々の現地調査,土質試験,解析を行った.合成開口レーダの測定結果によると陥没が発生した地区では局所的に2~3 mの水平変位が発生していた.この地区では9,000年前頃に湖が形成されていた.ボーリングや微動アレイ観測結果に …

    Journal of Japan Association for Earthquake Engineering 21(1), 1_135-1_158, 2021

    J-STAGE 

  • Gelatinous zooplankton community around a hydrothermally active deep-sea caldera: results from ROV video records

    Hidaka Mitsuko , Nishikawa Jun , Lindsay Dhugal J.

    … <p>ROV dive surveys were carried out inside and outside the Sumisu Caldera, located in the Izu-Bonin Arc. … The caldera is hydrothermally active and nourishes a unique chemosynthetic ecosystem, which includes <i>Bathymodiolus</i> … The vertical distribution patterns of gelatinous zooplankton clearly differed inside and outside the caldera: three gelatinous zooplankton morphotaxa, the ctenophores Lobata sp. …

    Plankton and Benthos Research 16(1), 40-58, 2021

    J-STAGE 

  • Kikai Submarine Caldera Project - Investigations on Mechanism of Super-eruption  [in Japanese]

    Seama Nobukazu

    Marine Engineering 56(1), 139-143, 2021

    J-STAGE 

  • The Seismic Reflectors Beneath Aira Caldera  [in Japanese]

    筒井 智樹 , 為栗 健 , 井口 正人

    … Seismic reflectors at the depth of Aira Caldera are presented through seismic array analysis of the later arrivals in the controlled-source seismograms across northern Kagoshima Bay on November 2008. … Seismic array analysis of the seismograms resolves numerous PP and PS reflections from depth of Aira Caldera in the basis of arrival time, back azimuth and apparent velocity. …

    京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B 63(B), 118-135, 2020-12

    IR 

  • Postseismic deformation following the 2016 Kumamoto earthquake detected by ALOS-2/PALSAR-2

    Hashimoto Manabu

    … Postseismic deformation following the Kumamoto earthquake exceeds 10 cm during 2 years at some spots in and around Kumamoto city and Aso caldera. … Significant uplift was found around the eastern Futagawa fault and on the southwestern frank of Aso caldera, whose rate reaches 4 cm/year. … Subsidence with westward shift of up to 4 cm/year was also found in Aso caldera. …

    Earth, Planets and Space (72), 2020-10-20

    IR 

  • A study of Etchū Tateyama Yūrei-mura Adauchi by Jippensha Ikku(Part1)  [in Japanese]

    福江 充

    … At the same time, the facilities at theTateyama hot-springs (close to the mountain's caldera and the many mountain peaks in thearea) were restored and a direct route was established from the mountains to the hotsprings.It was the start of a thriving hot-springs business. …

    北陸大学紀要 = Bulletin of Hokuriku University (49), 97-141, 2020-09-30

    IR  DOI 

  • Characteristics of Water Level Change of the Shinyu Hot Spring Pond in Tateyama Caldera, Converted to Geyser in 2014  [in Japanese]

    福井 幸太郎 , 飯田 肇 , 菊川 茂

    温泉科学 = Journal of hot spring sciences = Journal of the Balneological Society of Japan 70(1), 12-26, 2020-06

  • Giant rhyolite lava dome formation after 7.3 ka supereruption at Kikai caldera, SW Japan  [in Japanese]

    Tatsumi Yoshiyuki , Suzuki-Kamata Keiko , Matsuno Tetsuo , Ichihara Hiroshi , Seama Nobukazu , Kiyosugi Koji , Nakaoka Reina , Nakahigashi Kazuo , Takizawa Hideaki , Hayashi Kazuki , Chiba Tatsuro , Shimizu Satoshi , Sano Mamoru , Iwamaru Hikaru , Morozumi Haruhisa , Sugioka Hiroko , Yamamoto Yojiro

    鹿児島県地学会誌 (114), 46-49, 2020-03

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