AZHIKODAN Gubash
助教

AZHIKODAN Gubash アジコダン グバッシュ あじこだん ぐばっしゅ

プロフィール

所属

東京都立大学都市環境学部 都市基盤環境学科
都市環境科学研究科 都市基盤環境学域

最終学歴・学位

PhD in Engineering (Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, Japan)

専門・研究分野

Hydraulic Engineering, Estuarine hydro- and morphodynamics, Cohesive sediment transport, Phytoplankton dynamics

研究

研究テーマ

Hydrography, sediment transport and phytoplankton dynamics in Asian estuaries

Long term morphodynamic evolution in a macrotidal estuary

Recent Trends in Estuarine Hydro- and Morphodynamics in the Context of Climate Change

詳細情報

PEER REVIEWED INTERNATIONAL JOURNAL PAPERS

Azhikodan, G., Hlaing, N. O., Yokoyama, K., Kodama, M., 2021. Spatio-temporal variability of the salinity intrusion, mixing, and estuarine turbidity maximum in a tide-dominated tropical monsoon estuary. Continental Shelf Research 225, 104477. https://doi.org/10.1016/j.csr.2021.104477

Somsook, K., Azhikodan, G., Duka, M. A., Yokoyama, K., 2021. Riverbed fluctuation and erosion property of cohesive sediment based on long-term topographic surveys in a macrotidal estuary. Regional Studies in Marine Science 45, 101848. https://doi.org/10.1016/j.rsma.2021.101848

Azhikodan, G., Yokoyama, K., 2021. Erosion and Sedimentation Pattern of Fine Sediments and Its Physical Characteristics in a Macrotidal Estuary. Science of the Total Environment 753, 142025. https://doi.org/10.1016/j.scitotenv.2020.142025

Nwe, L.W., Azhikodan, G., Yokoyama, K., Kodama, M., 2021. Spatio-temporal distribution of diatoms and dinoflagellates in the macrotidal Tanintharyi River estuary, Myanmar. Regional Studies in Marine Science, 101634. https://doi.org/10.1016/j.rsma.2021.101634

Casila, J. C., Azhikodan, G., Yokoyama, K., 2020. Quantifying water quality and flow in multi-branched urban estuaries for a rainfall event with mass balance method. Water Science and Engineering 13(4), 317-328. https://doi.org/10.1016/j.wse.2020.12.002

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2020. A Generalized Storage Function Model for the Water Level Estimation using Rating Curve Relationship. Water Resources Management 34, 2603-2619. https://doi.org/10.1007/s11269-020-02585-6

Azhikodan, G., Yokoyama, K., 2019. Seasonal Morphodynamic Evolution in a Meandering Channel of a Macrotidal Estuary. Science of the Total Environment 684, 281–295. https://doi.org/10.1016/j.scitotenv.2019.05.289

Veerapaga, N., Azhikodan, G., Shintani, T., Iwamoto, N., Yokoyama, K., 2019. A Three-Dimensional Environmental Hydrodynamic Model, Fantom-Refined: Validation and Application for Saltwater Intrusion in a Meso-Macrotidal Estuary. Ocean Modelling 141, 101425. https://doi.org/10.1016/j.ocemod.2019.101425

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Takasaki, T., Azhikodan, G., 2019. A bootstrap approach for the parameter uncertainty of an urban-specific rainfall-runoff model. Journal of Hydrology 579, 124195. https://doi.org/10.1016/j.jhydrol.2019.124195

Veerapaga, N., Azhikodan, G., Shintani, T., Yokoyama, K., 2019. Numerical study on effect of topography, shape, and multi-branch on saltwater intrusion in a conceptual estuary. Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), 19–24. https://doi.org/10.2208/kaigan.75.I_19

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2019. A generalized urban storage function model considering spatial rainfall distribution. Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 75(2), 223–228. https://doi.org/10.2208/jscejhe.75.2_I_223

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Azhikodan, G., Takashi Suzuki., 2019. Storm Runoff Analysis by Generalised Storage Function Model. Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 75(5), 99–105. https://doi.org/10.2208/jscejer.75.I_99

Azhikodan, G., Yokoyama, K., 2018. Sediment transport and fluid mud layer formation in the macro-tidal Chikugo River Estuary during a fortnightly tidal cycle, Estuarine Coastal and Shelf Science 202, 232–245. https://doi.org/10.1016/j.ecss.2018.01.002

Padiyedath, S. G., Kawamura, A., Takasaki, T., Amaguchi, H., Azhikodan, G., 2018. An effective storage function model for an urban watershed in terms of hydrograph reproducibility and Akaike information criterion. Journal of Hydrology 563, 657–668. https://doi.org/10.1016/j.jhydrol.2018.06.035

Padiyedath, S. G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2018. Parameter uncertainty analysis of a storage function model using bootstrap method for an urban watershed, Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74(5), 151¬–156. https://doi.org/10.2208/jscejhe.74.5_I_151

Padiyedath, S. G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2018. Effect of lag time in Kimura’s storage function model on hydrograph reproducibility for an urban watershed compared with Prasad’s model. Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 74(5), 69–77. https://doi.org/10.2208/jscejer.74.I_69

Veerapaga, N., Shintani, T., Azhikodan, G., Yokoyama, K., 2018. Numerical investigation on effects of discharge, tidal flux and bathymetry of estuary on type and length of salinity intrusion. Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74(4), 781–786. https://doi.org/10.2208/jscejhe.74.I_781

Padiyedath, S. G., Kawamura, A., Takasaki, T., Amaguchi, H., Azhikodan, G., 2018. Performance evaluation of urban storage function (USF) model compared with various conventional storage function models for an urban watershed. Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74(4), 973–978. https://doi.org/10.2208/jscejhe.74.I_973

Casila, J. C., Azhikodan, G., Yokoyama, K., Fukushima, K., Terajima, R., 2017. Effect of rainfall on saltwater and suspended sediment dynamics in multi-branched urban tidal estuaries. Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 73(5), 347 – 352. https://doi.org/10.2208/jscejer.73.I_347

Padiyedath, S. G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2017. Baseflow estimation for tropical wet and dry climate regions using recursive digital filters. Journal of Japan Society of Civil Engineers, Ser. G (Environmental Research) 73(5), 9 – 16. https://doi.org/10.2208/jscejer.73.I_9

Azhikodan, G., Yokoyama, K., 2016. Spatio-temporal variability of phytoplankton (Chlorophyll-a) in relation to salinity, suspended sediment concentration, and light intensity in a macrotidal estuary. Continental Shelf Research 126, 15–26. https://doi.org/10.1016/j.csr.2016.07.006

Azhikodan, G., Yokoyama, K., 2015. Temporal and spatial variation of mixing and movement of suspended sediment in the macrotidal Chikugo River Estuary. Journal of Coastal Research 31, 680–689. https://doi.org/10.2112/JCOASTRES-D-14-00097.1

Azhikodan, G., Yokoyama, K., 2014. Estuarine mixing and spatial distribution of phytoplankton in the Chikugo River Estuary. Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70(2), 1081–1085. https://doi.org/10.2208/kaigan.70.I_1081

Azhikodan, G., Yokoyama, K., Morimura, Y., 2014. Effect of mixing on turbidity maximum movement during semilunar tidal cycle in the Chikugo River Estuary. Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 70(4), 37–42. https://doi.org/10.2208/jscejhe.70.I_37


PEER REVIEWED BOOK CHAPTERS

Azhikodan, G., Somsook, K., Yokoyama, K., 2020. Seasonal Morphodynamics and Sediment Transport in a Highly Turbid Meandering Estuarine Channel. In: Nguyen K., Guillou S., Gourbesville P., Thiébot J. (eds) Estuaries and Coastal Zones in Times of Global Change. Springer Water. Springer, Singapore. 321-342. https://doi.org/10.1007/978-981-15-2081-5_19

Veerapaga, N., Shintani, T., Azhikodan, G., Yokoyama, K., 2020. Study on Salinity Intrusion and Mixing Types in a Conceptual Estuary Using 3-D Hydrodynamic Simulation: Effects of Length, Width, Depth, and Bathymetry. In: Nguyen K., Guillou S., Gourbesville P., Thiébot J. (eds) Estuaries and Coastal Zones in Times of Global Change. Springer Water. Springer, Singapore. 13-30. https://doi.org/10.1007/978-981-15-2081-5_19


PEER REVIEWED CONFERENCE PROCEEDINGS

Nwe, L.W., Azhikodan, G., Yokoyama, K., 2021. Influence of salinity intrusion and suspended sediment concentration (SSC) on temporal distribution of diatoms (phytoplankton) in the Chikugo River estuary. River, Coastal and Estuarine Morphodynamics (RCEM) conference 2021. Session: Ecomorphodynamics. 02 December 2021 (10:25 - 10:50 CET).

Hlaing, N.O., Azhikodan, G., Yokoyama, K., 2021. Seasonal Variations of salinity intrusion and mixing conditions at Tanintharyi River estuary. River, Coastal and Estuarine Morphodynamics (RCEM) conference 2021. Session: Morphodynamics and sediment transport. 09 December 2021 (17:25 - 17:50 CET).

Nwe, L. W., Azhikodan, G., Yokoyama, K., Kodama, M., Hlaing, N. O., Tun, N. N., 2020. Diatoms and dinoflagellates distribution during dry season in the macrotidal Tanintharyi River estuary, Myanmar, in: Proceedings of the 22nd Congress of International Association for Hydro Environment Engineering and Research (IAHR) and Asia Pacific Division (APD), September 14-17, 2020, Sapporo, Japan. https://iahr-apd2020.eng.hokudai.ac.jp/htdocs/static/mirror/proceedings/pdf/3-7-6.pdf

Azhikodan, G., Yokoyama, K., 2019. Analysis of Mud Deposit Characteristics using the Vertical Profile in an Estuary, in: Proceedings of the 11th River, Coastal and Estuarine Morphodynamics (RCEM) symposium, November 16-21, 2019, Auckland, New Zealand. Page 8. https://doi.org/10.17608/k6.auckland.11301827.v1

Somsook, K., Azhikodan, G., Yokoyama, K., 2019. Effect of Current Velocity on Riverbed Fluctuations based on Long–Term (12 years) Topographic Surveys in a Macrotidal Estuary, in: Proceedings of the 11th River, Coastal and Estuarine Morphodynamics (RCEM) symposium, November 16-21, 2019, Auckland, New Zealand. Page 140. https://doi.org/10.17608/k6.auckland.11301827.v1

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2019. A simplified jackknife approach for the parameter uncertainty analysis of an urban-specific rainfall-runoff model, in: 38th International Association for Hydro Environment Engineering and Research (IAHR) World Congress 2019, September 1-6, 2019, Panama. pp. 4560–4570. https://doi.org/10.3850/38WC092019-0367

Kawamura, A., Padiyedath, S.G., Amaguchi, H., Azhikodan, G., 2019. Parameter uncertainty of urban storage function model by bootstrap approach, in: 16th Annual Meeting of Asia Oceania Geosciences Society, July 28 - August 2, 2019, Singapore.

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2019. A generalized storage function model considering rating curve relationship and spatial rainfall distribution, in: Annual Conference, Japan Society of Hydrology and Water Resources, 2019, Chiba Institute of Technology, Chiba, Japan. https://doi.org/10.11520/jshwr.32.0_20

Casila, J. C., Azhikodan, G., Yokoyama, K., 2018. Mass balance approach for the assessment of flow dynamics, salinity and suspended sediment transport in multi-branched urban tidal estuaries on a rainfall event in Tokyo, Japan, in: Proceedings of the 6th International Conference on Estuaries and Coasts, August 20-23, 2018, Caen, France.

Padiyedath, S.G., Kawamura, A., Amaguchi, H., Azhikodan, G., 2018. Kimura’s versus Prasad’s storage function model for an urban watershed, 15th AOGS annual meeting, June 3-8, 2018, Honolulu, Hawaii.

Azhikodan, G., Yokoyama, K., 2013. Turbidity maximum movement during semilunar tidal cycle in the Chikugo River Estuary, in: Proceedings of Hydro 2013 International, December 4-6, 2013, IIT Madras, India. pp. 521–529. ISBN: 978-93-80689-18-0

Azhikodan, G., Yokoyama, K., Morimura, Y., 2013. Temporal and spatial distribution of salinity and suspended sediment in a macrotidal estuary, in: Proceedings of International Symposium on Answers to Asian Aquatic Problems, November 16, 2013, Tokyo Metropolitan University, pp. 47–56. https://www.comp.tmu.ac.jp/water/AAA+2013/AAA+2013%20Proceedings%20All.pdf

Azhikodan, G., Yokoyama, K., 2012. Influence of tidal mixing on suspended sediment transport and phytoplankton dynamics in the Chikugo River Estuary, Japan, in: Proceedings of the 10th International Conference on Hydroscience & Engineering (ICHE), November 4-7, 2012, Orlando, Florida, U.S.A. pp. 1-6. No. 40137245. https://mdi-de.baw.de/icheArchive/documents/2012/40137245-Final.pdf

Azhikodan, G., Yokoyama, K., Iwatsuki, A., 2012. Temporal variation of mixing condition in Chikugo river estuary during a semilunar tidal cycle and its influence on phytoplankton growth, Seoul-Tokyo Forum 2012, Tokyo Metropolitan University, Japan.
Japan Society of Civil Engineers (JSCE)

Peer reviewer of Science of the Total Environment (Elsevier), Estuarine, Coastal and Shelf Science (Elsevier), Continental Shelf Research (Elsevier), International Journal of Sediment Research (Elsevier), Regional Studies in Marine Science (Elsevier), Arabian Journal of Geosciences (Springer), Ocean Science Journal (Springer), Sustainable Water Resources Management (Springer), Water (MDPI), Journal of Marine Science and Engineering (MDPI), Fluids (MDPI), PLOS ONE (PLOS).
Conducted online internship in the field of "Hydrodynamic Studies on Estuaries" during April-September 2021 for the two undergraduate students from TKM College of Engineering, Kollam, Kerala, India.

Managed a session entitled, “Estuarine contaminant dynamics – Assessing the impact of human interventions” as co-convener in CERF 2021 Biennial Conference on 11 November 2021 by collaborating with researchers abroad.

Inaugurated and presented the keynote address entitled “Scope of higher studies in agricultural and water resources engineering in TMU and Japan” in the international conference on innovative agricultural engineering and food technology during 28 and 29 December 2021.
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研究室

Building 9, Room No. 669

内線番号

内線4576

メールアドレス

gubash●tmu.ac.jp
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