Session Oral

T13.［Topic Session］Urban Geology: Interdisciplinary research on natural and social environments

[3oral401-12] T13.［Topic Session］Urban Geology: Interdisciplinary research on natural and social environments

Tue. Sep 6, 2022 8:45 AM - 11:45 AM oral room 4 (Build. 14, 401)

Chiar:Tsutomu Nakazawa, Junko Komatsubara, Mamoru Koarai

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8:45 AM - 9:00 AM

[T13-O-1] Average S-Wave Velocity mapping of Hokkaido based on Geological Information

【ハイライト講演】

*Wataru Hirose¹, Makoto Tomatsu¹, Shinichi Takeuchi¹ (1. Hokkaido Research Organization)

世話人よりハイライトの紹介：既存のボーリングデータ等に基づいて北海道の地盤モデルを作成し，地震動の増幅率の算出等に使用される深さ30 mまでの平均S波速度（AVS30）を推定する取り組みについて紹介いただく．従来手法の微地形区分に基づく推定値と比較したところ，後背湿地や自然堤防で相対的に低く，扇状地などでは高くなった．これは実際の震度分布や液状化被害とも整合的である．※ハイライトとは

9:00 AM - 9:15 AM

[T13-O-2] Landform evolution and ground disaster characteristics of the valley bottom plain around Mito City and Lake Kasumigaura using micro tremor measurement results

*Mamoru Koarai¹, Kawamura Naoki¹, Nakajima Nobuyuki¹, Nakano Hayato¹, Senna Shigeki², Nakano Takayuki³ (1. College of Science, Ibaraki University, 2. NIED, 3. GSI of Japan)

9:15 AM - 9:30 AM

[T13-O-3] Transgression and regression recorded in Holocene postglacial deposits within a incised valley with a small catchment, the Shibakawa lowland, Saitama Prefecture, central Japan.

*Junko Komatsubara¹ (1. Geological Survey of Japan, AIST)

9:30 AM - 9:45 AM

[T13-O-4] S-wave velocity structures and ground motion characteristics of the valley bottom lowlands in the Yamanote area, Tokyo, central Japan

*Tsutomu Nakazawa¹, Ikuo Cho¹, Junko Komatsubara¹, Kentaro Sakata¹ (1. Geological Survey of Japan, AIST)

9:45 AM - 10:00 AM

[T13-O-5] The Post-LGM deposits in lower reaches of the Yoro River, Machida district of Ichihara City, Chiba Prefecture, central Japan

*Takahiro KOJIMA¹, Osamu KAZAOKA¹, Tsutomu NAKAZAWA², Takeshi YOSHIDA¹ (1. Chiba Prefectural Environmental Research Center , 2. Geological Survey of Japan, AIST)

10:00 AM - 10:15 AM

[T13-O-6] Relationship between Chikuma-gawa floods and land utilization, based on the sedimentological studies of the Ninna flood sand beds in A.D. 888

*Koichi Hoyanagi¹, Kento Kametani¹ (1. Shinshu University)

10:15 AM - 10:30 AM

[T13-O-7] The Middle-Upper Pleistocene under metropolitan areas related to aquifer thermal energy storage

*Muneki Mitamura¹ (1. Osaka Metropolitan University)

10:30 AM - 10:45 AM

[T13-O-8] Integrated litho-, tephro- and palyno-stratigraphy of the MIS 7e-5e strata beneath the Noda district, central Kanto Plain, Japan

*Keiya YONEOKA¹, Kentaro Sakata¹, Tsutomu Nakazawa¹, Misao Hongo², Hiroomi Nakazato³ (1. GSJ, AIST, 2. Alps Tech. Res. Co., 3. NIRE, NARO)

10:45 AM - 11:00 AM

[T13-O-9] The direction of groundwater flow using hydrogeological units and disaster emergency wells

*Takeshi Yoshida¹, Naoto Ito¹, Osamu Kazaoka¹, Atsushi Kagawa¹, Hisashi Yabusaki¹, Takahiro Kojima¹ (1. Chiba Environmental Prefectural Reseach Center)

11:00 AM - 11:15 AM

[T13-O-10] About the utilization status of ground information in the Kansai area

*KITADA NAOKO¹, HAMADA TERUYUKI¹, MIZUTANI KOTARO¹, MIMURA MAMORU² (1. Geo-Research Institute, 2. Kyoto University)

11:15 AM - 11:30 AM

[T13-O-11] Slip and rupture propagation directions during earthquake estimated from the fault slicken lines: An example of the Enasan-Fault in Gifu prefecture

*Norio Shigematsu¹, Takashi Azuma¹, Rei Nakashima², Ken-ichi YASUE³, Ryo TATEISHI³, Daisuke HIROUCHI⁴ (1. Research Institute of Earthquake and Volcano Geology, AIST, 2. Research Institute of Geology and Geoinformation, Geological Survey of Japan, AIST, 3. School of Sustainable Design, the University of Toyama, 4. Faculty of Education, Shinshu University)

11:30 AM - 11:45 AM

[T13-O-12] Changes of the earthquake-induced landslides risk by artificial landform transformation: a case in the Tama New Town, west Tokyo

【ハイライト講演】

*Takehiko Suzuki¹, Masahiro Chigira², Yuki Matsushi³, Daichi Nakayama¹ (1. Dept. of Geography, Tokyo Metropolitan University, 2. Fukada Geological Institute, Japan, 3. Disaster Prevention Research Institute Kyoto University)

世話人よりハイライトの紹介：ローム層は強い地震動発生時に流動的地すべりが生じ，大規模な斜面災害を発生させてきた．本発表では，大規模な地形改変がなされた多摩丘陵を対象に人工改変前後の2時期のローム層厚分布図を作成し，人工改変によりローム層の流動性地すべりリスクがどの様に変化したかを検討した結果を紹介いただく．盛土部だけでなく，切土部でもローム層が残存する場所には斜面災害リスクがあること示す，貴重な研究成果である．※ハイライトとは

Session information

[3oral401-12] T13.［Topic Session］Urban Geology: Interdisciplinary research on natural and social environments

[T13-O-1] Average S-Wave Velocity mapping of Hokkaido based on Geological Information

【ハイライト講演】

[T13-O-2] Landform evolution and ground disaster characteristics of the valley bottom plain around Mito City and Lake Kasumigaura using micro tremor measurement results

[T13-O-3] Transgression and regression recorded in Holocene postglacial deposits within a incised valley with a small catchment, the Shibakawa lowland, Saitama Prefecture, central Japan.

[T13-O-4] S-wave velocity structures and ground motion characteristics of the valley bottom lowlands in the Yamanote area, Tokyo, central Japan

[T13-O-5] The Post-LGM deposits in lower reaches of the Yoro River, Machida district of Ichihara City, Chiba Prefecture, central Japan

[T13-O-6] Relationship between Chikuma-gawa floods and land utilization, based on the sedimentological studies of the Ninna flood sand beds in A.D. 888

[T13-O-7] The Middle-Upper Pleistocene under metropolitan areas related to aquifer thermal energy storage

[T13-O-8] Integrated litho-, tephro- and palyno-stratigraphy of the MIS 7e-5e strata beneath the Noda district, central Kanto Plain, Japan

[T13-O-9] The direction of groundwater flow using hydrogeological units and disaster emergency wells

[T13-O-10] About the utilization status of ground information in the Kansai area

[T13-O-11] Slip and rupture propagation directions during earthquake estimated from the fault slicken lines: An example of the Enasan-Fault in Gifu prefecture

[T13-O-12] Changes of the earthquake-induced landslides risk by artificial landform transformation: a case in the Tama New Town, west Tokyo

【ハイライト講演】

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