全部文献期刊会议图书|学者科研项目
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作者:Yuichi Niwa , Toshihiko Sugai
来源:[J].Marine Geology(IF 2.732), 2020
摘要:Abstract(#br)Holocene sedimentary successions in tectonically active regions are key to understanding coastal tectonics, because they provide information on millennial-scale crustal movements. Recent analyses of Holocene sedimentary successions along the Sanriku coast, near the s...
作者:Takashi Ogami , Toshihiko Sugai
来源:[J].Quaternary International(IF 1.962), 2018, Vol.471, pp.253-266
摘要:Abstract(#br)The 2011 Tohoku earthquake and tsunami caused heavy damage in low-lying river valleys of the Sanriku coast, northeastern Japan. The landward extent of inundation by the tsunami varied considerably among the valleys, indicating that tsunami runups were strongly affect...
作者:Takeshi Ishihara , Toshihiko Sugai
来源:[J].Quaternary International(IF 1.962), 2017
摘要:Abstract(#br)This study analyzed the morphology of three late Pleistocene buried paleovalleys in the central Kanto Plain, Japan, by using data from sedimentary cores and boreholes. The paleo-Arakawa valley and the paleo-Nakagawa valley merge to form the paleo-Tokyo valley, which ...
作者:Natsuki Sasaki , Toshihiko Sugai
来源:[J].Quaternary International(IF 1.962), 2018, Vol.471, pp.345-358
摘要:Abstract(#br)In warm and humid, tectonically active regions like Japan, landslides are an important influence on the development of mountain wetlands, but data bearing upon the relationship of Quaternary landslides to wetland development are scarce. We used lithological analysis,...
作者:... Sumiko Kubo , Toshihiko Sugai , Shinji Egashira
来源:[J].Geomorphology(IF 2.552), 2017, Vol.296
摘要:Abstract(#br)We examined channel bars at two sites in the lower reach of the Stung Sen River, which flows into Lake Tonle Sap, Cambodia, to identify sediment transport and accumulation processes during monsoon-related flood events and to investigate how sediment transport capacit...
作者:Takayuki Takahashi , Toshihiko Sugai
来源:[J].Quaternary International(IF 1.962), 2018, Vol.471, pp.318-331
摘要:Abstract(#br)To understand the sediment routing system from mountains to lowlands in the Quaternary Period, it is necessary to evaluate the interactions of fluvial processes and their response to climate changes. We reconstructed the development of fluvial landforms along the upp...
作者:Toshihiko Sugai , Yoshiaki Matsushima
来源:[J].Quaternary International(IF 1.962), 2017
摘要:Abstract(#br)Along the Sanriku coast, northeast Japan, discrepancies in crustal movement have been reported between uplift on a scale of 10 5 years versus subsidence on a scale of 10 1 –10 2 years. Well-dated Holocene incised-valley-fill sediments provide records of millenni...
作者:Toshihiko Sugai , Yoshiaki Matsushima
来源:[J].Quaternary International(IF 1.962), 2019, Vol.519, pp.10-24
摘要:Abstract(#br)Crustal movements on a millennial timescale (10 3 –10 4 years) are important data for assessing the deformation of subduction zones during megathrust earthquake cycles. Such data did not exist until recently for the Sanriku coast, near the source region of the 2...
作者:Toshihiko Sugai , Takeo Ishibe ...
来源:[J].Sedimentary Geology(IF 1.802), 2019
摘要:Abstract(#br)At Numanohama Marsh on the rocky Sanriku coast in northeast Japan, we identified 17 sand layers with sedimentary structures characteristic of event deposits (i.e., a sharp erosional contact with the underlying unit, a normal and/or inverse grading structure, par...
作者:Toshihiko Sugai , Takayuki Omori
来源:[J].Marine Geology(IF 2.732), 2018, Vol.404, pp.137-146
摘要:Abstract(#br)We found seven event deposits during the past 3800 years in a total of 16 geological core samples from a coastal lowland in Fukushima Prefecture, about 12 km north of the Fukushima Daiichi Nuclear Power Station. The event deposits consisted of well-sorted and ro...

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