Search Results 1-20 of 591

  • Characteristics of crustal uplift since the Pliocene in central Honshu, Japan, and sea level rise  [in Japanese]

    SHIBA Masahiro

    <p>日本列島の第四紀地殻変動は,山地の急速な隆起と沿岸および内陸盆地の相対的な沈降を引き起こした.本州中央部における36地域の鮮新世から第四紀の堆積物の年代層序学と岩相分析により,造構-堆積史が次の4つのステージで発達したことが明らかされた.1)鮮新世~前期更新世前期には,内陸盆地が発生し,深海盆にタービダイトが堆積した.2)前期更新世後期~中期更新世前期には,島弧の隆起が起こり,内 …

    Earth Science (Chikyu Kagaku) 75(1), 37-55, 2021

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  • Quaternary uplift in Tokyo Bay to the Boso Peninsula area, and large-scale sea level rises  [in Japanese]

    SAITO Naoto

    <p>関東平野の地層断面をもとにして,第四紀の地盤変動の時期と大きさを検討した.場所によってその時期と変動量は異なっているが,房総半島から東京湾にかけての今回検討した場所では,最大約2,700m近く隆起していることが推定される.</p><p>この地域の海成堆積物は,第四紀堆積物の示準層準にオンラップしながら累積しており,関東平野南縁部の地殻表面が絶対的に隆起した …

    Earth Science (Chikyu Kagaku) 75(1), 83-90, 2021

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  • 桜島火山における繰り返し相対重力測定(2019年5月-2020年3月)  [in Japanese]

    風間 卓仁 , 山本 圭吾 , 大柳 諒 , 岡田 和見 , 大島 弘光 , 井口 正人

    Relative gravity values were repeatedly measured at 21 gravity points in and around Sakurajima Volcano in May, July, September, December 2019 and March 2020, to monitor spatiotemporal mass variations associated with volcanism. … The relative gravity values measured from 2006 to 2020 showed a clear increase in the central part of the volcano by up to +4.7 µGal/yr. …

    京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B 63(B), 108-117, 2020-12

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  • Stratigraphy and sedimentary processes of the Miocene Kurami and Saigo Groups, Shizuoka Prefecture, Japan  [in Japanese]

    SHIBA Masahiro , YOKOYAMA Kenji , OHASHI Taichi , MORIZUMI Makoto , MAEKAWA Kouki , KONDO Tasuku , OGI Naomichi

    <p>静岡県掛川市北部地域に分布する下部~中部中新統は,不整合によって下位から倉真層群と西郷層群に区分される.倉真層群は下位から東道層,天方層,戸綿層,松葉層,真砂層からなり,西郷層群は下位から戸沢層と五明層からなる.倉真層群はBlow(1969)のN6~N8 帯に相当し,西郷層群はN8 帯に相当する.したがって,倉真層群の地質年代は前期中新世後期に,西郷層群は中期中新世初期に当たる. …

    Earth Science (Chikyu Kagaku) 74(4), 137-155, 2020

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  • Coseismic Uplift of Iwami-Tatamigaura during the 1872 Hamada Earthquake:——Survey of Emerged Sessile Assemblage and Topography——  [in Japanese]

    SHISHIKURA Masanobu , NAMEGAYA Yuichi , MAEMOKU Hideaki , ECHIGO Tomoo

    … In two sea caves located in the northern part of the survey area, we observed the emerged sessile assemblage, which consists mainly of calcareous tubeworm, <i>Pomatoleios kraussii</i>, and collected samples for <sup>14</sup>C dating and measured their altitude referring against the Tokyo Peil (T.P.). …

    Zisin (Journal of the Seismological Society of Japan. 2nd ser.) 73(0), 159-177, 2020

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  • Depositional sequence of the Post-LGM incised-valley fill controlled by seismic crustal deformation and large-scale lahars: An example of the core obtained from the Sukumo coastal lowland along the Nankai Trough, Japan  [in Japanese]

    Nanayama Futoshi , Yamaguchi Tatsuhiko , Nakanishi Toshimichi , Tsuji Tomohiro , Ikeda Michiharu , Kondo Yasuo , Miwa Michiko , Sugiyama Shinji , Kimura Kazunari

    <p>南海トラフ巨大地震によって沈降が予測されている宿毛臨海低地において沖積コアを採取し,LGMの開析谷を埋積する沖積層の特徴と堆積シークエンスの検討をした.松田川開析谷はLGMに形成され,その後の後氷期海進により,9.8kaに標高-30mに海水が到達し,エスチュアリー環境へと変化した.その後も海水準は上昇し続けて内湾泥底環境となり,7.5kaに最高水深時となった.7.3kaに起こった …

    The Journal of the Geological Society of Japan 126(9), 493-517, 2020

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  • Perspectives on a Seamless Marine-lake Sediment Coring Study in East Antarctica  [in Japanese]

    SUGANUMA Yusuke , HANEDA Yuki , FUJII Masakazu , HIRANO Daisuke , ISHIWA Takeshige , KAWAMATA Moto , OKUNO Jun'chi , KATSUKI Kota , ITAKI Takuya , SEKI Osamu , KANEDA Heitaro , MATSUI Hiroki

    … <p> The Antarctic Ice Sheet (AIS) is one of the largest potential contributors to future sea-level changes. … A recent model that couples ice sheet and climate dynamics and incorporates hydrofracturing mechanism of buttressing ice shelves predicts a higher sea-level rise scenario for the next 500 years. …

    Journal of Geography (Chigaku Zasshi) 129(5), 591-610, 2020

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  • PROJECTION OF SHORELINE RESPONSE TO RELATIVE SEA-LEVEL RISE USING THE MODIFIED BRUUN RULE  [in Japanese]

    WATANABE Kunihiro , KATO Fuminori , TAKAGI Toshimitsu , WAYAMA Chiho , HANADA Masayuki , TAKEUCHI Yui

    <p> 気候変動に伴う海面水位の上昇による汀線変化の簡便な予測として土砂量変化を考慮できるBruun則に着目し,国内の海岸における深浅測量結果を用いて手法の適用性を検証した.地殻変動等によって相対的な海面上昇を経験した5海岸を対象にした再現計算では,一部の海岸を除けば±1.0m/年程度の精度で過去に生じた汀線変化を再現できることが確認され,10海岸を対象とした平衡断面形状の近似式の精度 …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76(2), I_529-I_534, 2020

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  • HARBOR TRANQUILITY ANALYSIS FOCUSED ON WAVE FISSION AND TRANSMISSION BY SUBMERGED COMPOSITE BREAKWATER  [in Japanese]

    HIRAYAMA Katsuya , HAMANO Yuuki , YAMADA Sotaku

    <p> 沖防波堤をなすケーソン群の一部が没水した港湾に残存する静穏度を適切に評価し,岸壁を早期に暫定供用するためには,ケーソンが完全に消失したとみなす代わりに潜堤として機能することを考慮して波浪変形計算を行うことが必要と考えられる.そこで本研究では,水深が急変する矩形潜堤での波の分裂・屈折・砕波をも計算可能な平面2次元ブシネスクモデルを用いた港内静穏度解析を実施し,被災形態の違いが対象 …

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 76(2), I_73-I_78, 2020

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  • Future Projections of Heavy Precipitation in Kanto and Associated Weather Patterns Using Large Ensemble High-Resolution Simulations

    Miyasaka Takafumi , Kawase Hiroaki , Nakaegawa Tosiyuki , Imada Yukiko , Takayabu Izuru

    … To understand these extreme events, associated sea level pressure anomalies over Japan and the surrounding region are classified into four clusters. … The relative frequency of this cluster will increase, whereas that of other clusters will decrease under global warming.</p> …

    SOLA 16(0), 125-131, 2020

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  • Using Substitute Anteroposterior Line Improves Rotational Alignment of Tibial Component in Uni-Compartmental Knee Arthroplasty  [in Japanese]

    TSUKAMOTO Ichiro , 森竹 章公 , 山岸 孝太郎 , 中川 晃一 , 井上 紳司 , 赤木 將男 , 森 成志

    … In 2017, the substitute anteroposterior (sAP) line connecting the medial border of the patellar tendon at the articular surface level and the medial intercondylar tubercle was proposed for an AP reference in medial unicompartmental knee arthroplasty (UKA) and shown to be almost perpendicular to the surgical epicondylar axis (SEA). … First, the angles between the SEA and AP directions of the tibial and the femoral components were measured. …

    Japanese Journal of Joint Diseases 39(1), 1-6, 2020

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  • Characteristics, Physical Mechanisms, and Prediction of Pre-summer Rainfall over South China: Research Progress during 2008–2019

    Luo Yali , Xia Rudi , Chan Johnny C. L.

    Sea surface temperatures over the tropical Pacific and Indian Oceans are shown to have a great influence on the interannual variations of pre-summer rainfall over SC. … The warm-sector rainfall over inland SC results from surface heating, local topographic lifting, and urban heat island effects interacting with the sea breeze. … The warm-sector rainfall over coastal SC is closely associated with double low-level jets, land-sea-breeze fronts, and coastal mountains. …

    Journal of the Meteorological Society of Japan. Ser. II 98(1), 19-42, 2020

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  • Repeated Relative Gravity Measurements in Sakurajima Volcano (May 2018-February 2019)  [in Japanese]

    風間 卓仁 , 山本 圭吾 , 大島 弘光 , 岡田 和見 , 大柳 諒 , 園田 忠臣 , 井口 正人

    Relative gravity values were repeatedly measured at 19 gravity points in and around Sakurajima Volcano in May 2018, August-October 2018 and January-February 2019, to monitor spatiotemporal mass variations associated with volcanism. … The relative gravity values measured from 2006 to 2019 showed a clear increase in the central part of the volcano by up to +4.7μGal/yr. …

    京都大学防災研究所年報. B = Disaster Prevention Research Institute Annuals. B 62(B), 318-324, 2019-09

    IR 

  • Coastal Evolution, Geomorphic Processes and Sedimentary Records in the Anthropocene

    Gomez Christopher , Hart E. Deirdre , Wassmer Patrick , Imai Kenta , Matsui Hiroki , Shimizu Mariko

    … Our first anthropogenic impact investigation focusses on the potential effects of sea level rise (SLR) due to anthropogenic climate change. …

    Forum Geografi 33(1), 1-24, 2019-07

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  • Construction and destruction of an autogenic grade system: The late Holocene Mekong River delta, Vietnam

    Wang Junhui , Tamura Toru , Muto Tetsuji

    … Recent physical and theoretical modeling proposed the notion that downstream alluvial rivers can autogenically attain grade only in a particular set of environmental conditions that include a constant fall of relative sea level. … Ongoing drastic changes in sea level and human activities have caused the downstream Mekong River to become ungraded and unstable with a much higher risk of channel avulsion and shifting than in the past. …

    Geology 47(7), 669-672, 2019-05-13

    IR 

  • Regulating factors of organic carbon accumulation rate in coastal vegetated habitats  [in Japanese]

    渡辺 謙太 , 所 立樹 , 田多 一史 , 門谷 茂 , 桑江 朝比呂

    港湾空港技術研究所報告 = Report of the Port and Airport Research Institute 57(4), 3-5,7-28, 2019-03

  • Late glacial to deglacial variation of coralgal assemblages in the Great Barrier Reef, Australia

    Humblet M. , Potts D.C. , Webster J.M. , Braga J.C. , Iryu Y. , Yokoyama Y. , Bourillot R. , Séard C. , Droxler A. , Fujita K. , Gischler E. , Kan H.

    … Integrated Ocean Drilling Program (IODP) Expedition 325 cored submerged reefs along the shelf edge of the Great Barrier Reef (GBR) to study sea-level and environmental changes and their impacts on reef communities and reef growth since the Last Glacial Maximum (LGM). … Prior to the fall in sea level to the maximum extent of the LGM, late glacial reef communities developed more proximally (landward) to the modern GBR along the shelf edge. …

    Global and Planetary Change (174), 70-91, 2019-03

    IR 

  • Discussion of Relative Sea Level Rise along the Coast of China from Mid-20Th to End of 21st Centuries  [in Japanese]

    Parker Albert , 小泉 潔 [訳]

    グローバルテクトニクスの新概念 : ニュースレター = New concepts in global tectonics : newsletter 6(3), 5-10, 2019-02

  • Effect of washing porous filter materials on ammonia oxidation activity and ammonia oxidizing microorganisms  [in Japanese]

    Imai Tadashi , Sakami Tomoko , Takashi Toshinori , Morita Tetsuo , Imai Satoshi , Yamamoto Yoshihisa , Oka Masakazu

    <p>ろ材の洗浄がアンモニア酸化活性とアンモニア酸化微生物に及ぼす影響を調べた。実験には人工海水中で硝化微生物を付着させた多孔質ろ材を用いた。閉塞したろ材は洗浄によりアンモニア酸化活性が2 倍以上増大した。人工海水で洗浄したろ材のアンモニア酸化活性は洗浄前の92%に低下した。ろ材中のアンモニア酸化古細菌とアンモニア酸化細菌の現存量は,それぞれ94%と86%に減少した。洗浄水には15%の …

    Aquaculture Science 67(3), 233-240, 2019

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  • What makes a long tail short? Testing Allen's Rule in the toque macaques of Sri Lanka  [in Japanese]

    Huffman Michael A. , Kumara Raveendra , Kawamoto Yoshi , Jayaweera Prasad M , Bardi Massimo , Nahallage Charmalie AD

    … In macaques, relative tail length (RTL) is one of the most frequently measured appendages to test Allen's rule. … The TTI of 259 adult free-ranging toque macaques (<i>Macaca sinica</i>) from 36 locations between 7 and 2087 m above sea level (m. …

    Primate Research Supplement 35(0), 37-37, 2019

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