Gubash Azhikodan

@tmu.ac.jp

Assistant Professor, Department of Civil and Environmental Engineering, Faculty of Urban Environmental Sciences
Tokyo Metropolitan University

Gubash Azhikodan

EDUCATION

Ph. D. in Engineering, Tokyo Metropolitan University, Japan
M. Tech in Water Management, IIT Kharagpur, India
B. Tech in Agricultural Engineering, Kerala Agricultural University, India

RESEARCH, TEACHING, or OTHER INTERESTS

Environmental Science, Aquatic Science, Civil and Structural Engineering, Oceanography
36

Scopus Publications

653

Scholar Citations

14

Scholar h-index

18

Scholar i10-index

Scopus Publications

RECENT SCHOLAR PUBLICATIONS

  • Photodegradation of polyamide, polyester, and HDPE aquaculture cage nets: Implications for microplastic pollution
    KL Priya, B Jihan, A Abbas, J Ravi, G Azhikodan, MS Indu, V Baiju, ...
    Marine Pollution Bulletin 228, 119531 , 2026
    2026
  • シラスウナギ遡上のための潮止めゲートの運用提案と合意形成
    横山勝英, 西野廉, G Azhikodan, 水村早希, 望岡典隆
    土木学会論文集 82 (16), 25-16009 , 2026
    2026
  • Assessing bottom water movement during winter turnover in the deep Ogouchi Reservoir by particle tracking method
    G Kheiri, K Yokoyama, G Azhikodan, T Shintani, H Kunieda, A Takahashi
    Journal of Environmental Management 387, 125895 , 2025
    2025
    Citations: 1
  • Prediction of fish (Coilia nasus) catch using spatiotemporal environmental variables and random forest model in a highly turbid macrotidal estuary
    VS Rawat, G Azhikodan, K Yokoyama
    Ecological Informatics 86, 103048 , 2025
    2025
    Citations: 5
  • Influence of anthropogenic pressures on the microplastic distribution in the riverine-estuarine environment: A source-apportioning approach
    KL Priya, KR Renjith, S Haddout, G Azhikodan, K Yokoyama, ...
    Journal of Contaminant Hydrology 271, 104546 , 2025
    2025
    Citations: 6
  • Analysing the influence of hydrodynamic and sedimentary factors on the microplastic distribution in the Ashtamudi estuary, India
    KL Priya, G Azhikodan, K Yokoyama, KR Renjith
    Marine Pollution Bulletin 212, 117537 , 2025
    2025
    Citations: 10
  • Long-term (68 years) morphological changes of the alluvial river and macro-tidal estuary affected by river works and extreme rainfall disasters
    PE Phyu, G Azhikodan, K Yokoyama
    Journal of Hydrology 648, 132497 , 2025
    2025
    Citations: 4
  • DEVELOPMENT AND EVALUATION OF A FLOATING WEATHER MONITORING SYSTEM FOR ASSESSING SPATIAL WEATHER DISTRIBUTION IN THE OGOUCHI RESERVOIR
    G KHEIRI, Y SHINOHARA, MLE MONTEREY, G AZHIKODAN, ...
    Journal of JSCE 13 (2), 25-27021 , 2025
    2025
  • Effect of topography and tidal variations on the flow dynamics in multi-channel tidal river estuaries
    NO Hlaing, G Azhikodan, K Yokoyama
    Estuarine, Coastal and Shelf Science 308, 108923 , 2024
    2024
    Citations: 4
  • Effect of monsoonal rainfall and tides on salinity intrusion and mixing dynamics in a macrotidal estuary
    NO Hlaing, G Azhikodan, K Yokoyama
    Marine Environmental Research 202, 106791 , 2024
    2024
    Citations: 7
  • Analyzing the Role of Salinity in the Chlorophyll Prediction in the Ashtamudi Estuary, India
    S Haddout, KR Renjith, G Azhikodan
    Proceedings of The 2nd International Conference on Climate Change and Ocean … , 2024
    2024
  • Effect of fortnightly and seasonal changes in estuarine physical variables on phytoplankton distribution in a macrotidal monsoon estuary
    LW Nwe, G Azhikodan, K Yokoyama
    Continental Shelf Research 279, 105292 , 2024
    2024
    Citations: 5
  • Factors contributing to the minimum water column stability and timing of the winter turnover in the Ogouchi reservoir
    G Kheiri, R Pabalan, MA Duka, G Azhikodan, K Yokoyama
    Journal of Environmental Management 365, 121537 , 2024
    2024
    Citations: 7
  • Relationship between hydro-environmental variables and Coilia nasus catch in a highly turbid macrotidal estuary in Japan
    VS Rawat, R Fujikawa, G Azhikodan, K Yokoyama
    Estuarine, Coastal and Shelf Science 302, 108773 , 2024
    2024
    Citations: 4
  • Analysing the performance of the NARX model for forecasting the water level in the Chikugo River estuary, Japan
    K Vidyalashmi, L Megha Chandana, JS Nandana, G Azhikodan, KL Priya, ...
    Environmental Research 251, 118531 , 2024
    2024
    Citations: 15
  • APPLICATION OF THE RANDOM FOREST ALGORITHM FOR PREDICTING CPUE OF COILIA NASUS AT THE CHIKUGO RIVER ESTUARY JAPAN
    VS RAWAT, PE PHYU, G AZHIKODAN, K YOKOYAMA
    Journal of JSCE 12 (2), 24-27043 , 2024
    2024
  • Morphological response of the Chikugo River to climate change events
    A Gubash
    Proceedings of the 4th IAHR Young Professionals Congress, ISBN: 978-90 … , 2024
    2024
  • TOPOGRAPHY AND TIDAL VARIATIONS: IMPACT ON COUNTER-CURRENT FLOW AT THE CONFLUENCE AREA OF TANINTHARYI RIVER ESTUARY
    NO HLAING, G AZHIKODAN, K YOKOYAMA
    Journal of JSCE 12 (2), 23-16140 , 2024
    2024
    Citations: 4
  • EFFECTS OF PAST HUMAN ACTIVITIES AND RECENT DISASTERS ON RIVERBED MORPHOLOGY OF THE CHIKUGO RIVER ESTUARY
    PE PHYU, G AZHIKODAN, K YOKOYAMA
    Journal of JSCE 12 (2), 23-16019 , 2024
    2024
    Citations: 4
  • Evaluating the Performance of ANN and ANFIS Models for the Prediction of Chlorophyll in the Ashtamudi Estuary, India
    MR Raj, K Krishnapriya, N Hisana, KL Priya, G Azhikodan
    International Conference on Advances in Data-driven Computing and … , 2023
    2023
    Citations: 1

MOST CITED SCHOLAR PUBLICATIONS

  • Spatio-temporal variability of phytoplankton (Chlorophyll-a) in relation to salinity, suspended sediment concentration, and light intensity in a macrotidal estuary
    G Azhikodan, K Yokoyama
    Continental Shelf Research 126, 15-26 , 2016
    2016
    Citations: 88
  • Sediment transport and fluid mud layer formation in the macro-tidal Chikugo river estuary during a fortnightly tidal cycle
    G Azhikodan, K Yokoyama
    Estuarine, Coastal and Shelf Science 202, 232-245 , 2018
    2018
    Citations: 54
  • Temporal and Spatial Variation of Mixing and Movement of Suspended Sediment in the Macrotidal Chikugo River Estuary
    G Azhikodan, K Yokoyama
    Journal of Coastal Research 31 (3), 680-689 , 2015
    2015
    Citations: 46
  • A three-dimensional environmental hydrodynamic model, Fantom-Refined: Validation and application for saltwater intrusion in a meso-macrotidal estuary
    N Veerapaga, G Azhikodan, T Shintani, N Iwamoto, K Yokoyama
    Ocean Modelling 141, 101425 , 2019
    2019
    Citations: 40
  • Erosion and sedimentation pattern of fine sediments and its physical characteristics in a macrotidal estuary
    G Azhikodan, K Yokoyama
    Science of The Total Environment 753, 142025 , 2021
    2021
    Citations: 38
  • An effective storage function model for an urban watershed in terms of hydrograph reproducibility and Akaike information criterion
    SP Gopalan, A Kawamura, T Takasaki, H Amaguchi, G Azhikodan
    Journal of hydrology 563, 657-668 , 2018
    2018
    Citations: 36
  • Spatio-temporal variability of the salinity intrusion, mixing, and estuarine turbidity maximum in a tide-dominated tropical monsoon estuary
    G Azhikodan, NO Hlaing, K Yokoyama, M Kodama
    Continental Shelf Research 225, 104477 , 2021
    2021
    Citations: 33
  • Seasonal morphodynamic evolution in a meandering channel of a macrotidal estuary
    G Azhikodan, K Yokoyama
    Science of The Total Environment 684, 281-295 , 2019
    2019
    Citations: 33
  • A bootstrap approach for the parameter uncertainty of an urban-specific rainfall-runoff model
    SP Gopalan, A Kawamura, H Amaguchi, T Takasaki, G Azhikodan
    Journal of Hydrology 579, 124195 , 2019
    2019
    Citations: 31
  • Effect of mixing on turbidity maximum movement during semilunar tidal cycle in the Chikugo River Estuary
    G Azhikodan, K Yokoyama, Y Morimura
    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering … , 2014
    2014
    Citations: 25
  • Phytoplankton habitats and size distribution during a neap-spring transition in the highly turbid macrotidal Chikugo River estuary
    LW Nwe, K Yokoyama, G Azhikodan
    Science of The Total Environment 850, 157810 , 2022
    2022
    Citations: 24
  • Analysing the performance of the NARX model for forecasting the water level in the Chikugo River estuary, Japan
    K Vidyalashmi, L Megha Chandana, JS Nandana, G Azhikodan, KL Priya, ...
    Environmental Research 251, 118531 , 2024
    2024
    Citations: 15
  • Spatio-temporal distribution of diatoms and dinoflagellates in the macrotidal Tanintharyi River estuary, Myanmar
    LW Nwe, G Azhikodan, K Yokoyama, M Kodama
    Regional Studies in Marine Science 42, 101634 , 2021
    2021
    Citations: 14
  • Estuarine Mixing and Spatial Distribution of Phytoplankton in the Chikugo River Estuary
    G AZHIKODAN, K YOKOYAMA
    土木学会論文集 B2 (海岸工学) 70 (2), I_1081-I_1085 , 2014
    2014
    Citations: 14
  • Effect of Rainfall on Saltwater and Suspended Sediment Dynamics in Multi-branched Urban Tidal Estuaries
    JC CASILA, G AZHIKODAN, K YOKOYAMA, K FUKUSHIMA, R TERAJIMA
    土木学会論文集 G (環境) 73 (5), I_347-I_352 , 2017
    2017
    Citations: 12
  • Analysing the influence of hydrodynamic and sedimentary factors on the microplastic distribution in the Ashtamudi estuary, India
    KL Priya, G Azhikodan, K Yokoyama, KR Renjith
    Marine Pollution Bulletin 212, 117537 , 2025
    2025
    Citations: 10
  • Quantifying water quality and flow in multi-branched urban estuaries for a rainfall event with mass balance method
    JC Casila, G Azhikodan, K Yokoyama
    Water Science and Engineering 13 (4), 317-328 , 2020
    2020
    Citations: 10
  • Study on Salinity Intrusion and Mixing Types in a Conceptual Estuary Using 3-D Hydrodynamic Simulation: Effects of Length, Width, Depth, and Bathymetry
    N Veerapaga, T Shintani, G Azhikodan, K Yokoyama
    Estuaries and Coastal Zones in Times of Global Change, 13-30 , 2020
    2020
    Citations: 10
  • A Generalized Storage Function Model for the Water Level Estimation Using Rating Curve Relationship
    SP Gopalan, A Kawamura, H Amaguchi, G Azhikodan
    Water Resources Management: An International Journal, Published for the … , 2020
    2020
    Citations: 9
  • Numerical Study on Effect of Topography, Shape, and Multi-branch on Saltwater Intrusion in a Conceptual Estuary
    N VEERAPAGA, G AZHIKODAN, T SHINTANI, K YOKOYAMA
    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering … , 2019
    2019
    Citations: 8

GRANT DETAILS

1. PI of the sponsored project entitled “Analysis of Morphodynamic Evolution in a Meandering Estuarine Channel in the Context of Climate Change”, Japan Society for the Promotion of Science (JSPS), 4,160,000 JPY, 04/2020-03/2024.


2. PI of the sponsored project entitled "Comparative study of hydrodynamic processes in large and small estuaries", Tokyo Metropolitan University Grant-in-Aid for Scientific Research Challenge Support (Basic Research - B), 2,000,000 JPY, 04/2024-03/2025.

3. Co-PI of the sponsored project entitled “Prevention of water pollution caused by the floating waste disposal from megacities in the context of global warming and COVID-19 lockdowns”, Tokyo Metropolitan Government (TMG), 45,000,000 JPY, 04/2022-03/2025. Co-investigators (Katsuhide Yokoyama (PI), Yoshiyuki Imamura, Masayuki Kawahigashi, Yasuhiro Arai, Hiroshi Sakai, Tetsuya Shintani, Hideo Amaguchi).

4. PI of the sponsored project entitled “International comparative study on hydrodynamic processes in Asian estuaries”, Tokyo Metropolitan University (Promotion of Internationalization), 800,000 JPY, 04/2023-03/2024.

5. PI of the sponsored project entitled “International comparative study on hydrodynamic processes in Asian estuaries”, Tokyo Metropolitan University (Promotion of Internationalization), 600,000 JPY, 04/2022-03/2023.