The 132nd Annual Meeting of the Geological Society of Japan
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Session OralT11 ［Topic Session］Urban Geology: Interdisciplinary research on natural and social environmentsEDI

[2oral401-07]T11. Urban Geology: Interdisciplinary research on natural and social environments

Mon. Sep 15, 2025 10:15 AM - 12:00 PM JST
Mon. Sep 15, 2025 1:15 AM - 3:00 AM UTC
oral room 4(E203)
Chiar:Yoshiyuki TAMURA(Chiba Prefectural Enviromnet Foundation), Susumu NONOGAKI(Geological Survey of Japan, AIST)
10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)HighlightECS

[T11-O-1]Three-dimensional Urban Geological Map: Stratigraphy of the Pleistocene Shimosa Group in the northern extension part of Chiba Prefecture

*Keiya YONEOKA1, Tsutomu NAKAZAWA1, Susumu NONOGAKI1, Hiroomi NAKASATO1 (1. Geological Survey of Japan, AIST)
【ハイライト講演】  演者らは3次元地質地盤図「千葉県北部延長」地域の調査において，更新統下総層群のテフラ層序を詳細化し，関東平野中央部の継続的な沈降運動とMIS 7c最大海進期の海陸境界付近の層相変化を明らかにした．地下浅部の地層の連続性や層相変化を正確に把握できたことにより，持続可能な地下水利用や地盤リスク評価への貢献が期待される． ※ハイライト講演とは．．．
10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[T11-O-2]New findings on marker tephras in the Middle Pleistocene Yabu Formation, Shimosa Group .

*Hiroomi NAKAZATO1, Keiya YONEOKA1, Tsutomu NAKAZAWA1, Toru TAMURA1 (1. AIST,GSJ)
10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)

[T11-O-3]Geology and ground motion characteristics in the lowland of central Yokohama: Extremely soft post-LGM deposits and the underlying firm Kazusa Group

*Tsutomu Nakazawa1, Ikuo Cho1, Susumu Nonogaki1, Masanori Ozaki1, Kentaro Sakata1 (1. Geological Survey of Japan, AIST)
11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[T11-O-4]Geological conditions around the fissures on the coastal area caused by the 1923 Kanto earthquake: A geological survey in Nagasuka, Tateyama City

*Osamu Kazaoka1, Takahiro Kojima2 (1. Chiba Prefectural Environmental Research Center, 2. Research Institute of Energy, Environment and Geology, HRO)
11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[T11-O-5]Study on urban ground conditions in the Osaka Bay Area

*Naoko KITADA1, Mamoru MIMURA1 (1. Geo-Research Institute)
11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)

[T11-O-6]Possibility of discriminating slightly elevated topographies using microtremor observation data

*Junko KOMATSUBARA1, Ikuo CHO1, Yoshiki SATO1, Tomonori NAYA1 (1. Geological Survey of Japan, AIST)
11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[T11-O-7]Aplication of microtremor measurements to active fault research

*Mamoru KOARAI1, Tomoki KANEKO2, Nobuyuki NAKAJIMA3, Shigeki SENNA4 (1. College of Science, Ibaraki University, 2. JRTT, 3. Graduate School of Science and Engineering, Ibaraki University, 4. NIED)
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