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Proposal of digital twin approach in cooperation with flood analysis for small and medium rivers
Shoma Wakasaya, Makoto Nakatsugawa Received 19 May, 2025 Accepted 14 November, 2025 Published online 27 February, 2026 Shoma Wakasaya1), Makoto Nakatsugawa1) 1) Dept. of Civil Eng., Muroran Institute of Technology, Japan The purpose of t... -
Numerical analysis of infiltration dynamics in layered soil profiles with earthquake-induced fissures: a case study from the Kumamoto earthquake, western Japan
Yohei Arata, Hirotaka Saito, Takashi Gomi, Roy C. Sidle Received 25 April, 2025 Accepted 5 December, 2025 Published online 27 February, 2026 Yohei Arata1), Hirotaka Saito2), Takashi Gomi3), Roy C. Sidle4)5) 1) Forestry Research Institute... -
A municipality-level comparison of agricultural reservoirs in Japan considering climate change and population decline
Yuta Itsumi, Ena Higotani, Tamami Dozono, Satoshi Watanabe Received 23 July, 2025 Accepted 21 October, 2025 Published online 11 February, 2026 Yuta Itsumi1), Ena Higotani1), Tamami Dozono2), Satoshi Watanabe1) 1) Faculty of Social and Cu... -
Seasonal variation in end-members and discharge mechanisms of a caldera spring with multiple groundwater flow systems: insights from multi-tracer analysis in the Aso Caldera, Japan
Mori Ueyama, Makoto Kagabu Received 22 July, 2025 Accepted 8 October, 2025 Published online 31 January, 2026 Mori Ueyama1), Makoto Kagabu2) 1) Faculty of Environmental Science, Nagasaki University, Japan 2) Institute of Integrated Scienc... -
Comparative analysis of flash and traditional droughts in the Kashkadarya region, Uzbekistan
Valeriya Rakhmatova, Temur Khujanazarov, Kenji Tanaka, Yoshiya Touge, Bakhriddin E. Nishonov, Dmitry Belikov Received 8 May, 2025 Accepted 23 September, 2025 Published online 16 January, 2026 Valeriya Rakhmatova1), Temur Khujanazarov2), ... -
Significant reduction of river discharge in the mountainous basins of Uzbekistan over the last decades
Adkham Mamaraimov, Bakhriddin Nishonov, Akmal Gafurov, Temur Khujanazarov Received 22 May, 2025 Accepted 21 October, 2025 Published online 14 January, 2026 Adkham Mamaraimov1), Bakhriddin Nishonov1)2), Akmal Gafurov1), Temur Khujanazarov... -
River water temperature variability: classification, diurnal change, and precipitation impacts in Nagara River tributaries
Khadiza Akter Mousumi, Takeo Onishi, Masanao Sueyoshi, Morihiro Harada, Ken Hiramatsu Received 29 June, 2025 Accepted 5 October, 2025 Published online 27 December, 2025 Khadiza Akter Mousumi1)2), Takeo Onishi3), Masanao Sueyoshi4)5), Mor... -
Reproducibility of SPI-based drought indices and recent wetting trends over Japan using JRA-3Q
Kazuyo Murazaki, Tosiyuki Nakaegawa Received 15 June, 2025 Accepted 28 August, 2025 Published online 25 December, 2025 Kazuyo Murazaki1), Tosiyuki Nakaegawa2) 1) Department of Applied Meteorology Research, Meteorological Research Institu... -
Assessing agricultural drought vulnerability: exploring historical drought hotspots in Indonesia through high-resolution satellite imagery
Amalia Nafisah Rahmani Irawan, Daisuke Komori Received 27 May, 2025 Accepted 14 July, 2025 Published online 24 December, 2025 Amalia Nafisah Rahmani Irawan1)2), Daisuke Komori1)2) 1) Green Goals Initiative, Tohoku University, Japan 2) Gr... -
Cost-benefit analysis of adaptation measures to reduce flood inundation damage in rivers in Toyama Prefecture, Japan
Hasune Numazawa, Shuichi Kure, Ryuto Fujishita Received 3 March, 2025 Accepted 9 July, 2025 Published online 20 December, 2025 Hasune Numazawa1), Shuichi Kure2), Ryuto Fujishita1) 1) Graduate School of Toyama Prefectural University, Depa...
