A Numerical Expedition through the Mathematical Representation of Complex Braided Morphometry—A Case Study of Brahmaputra River in India Mohammad Parwez Akhtar, Chandra Shekhar Prasad Ojha, Nayan Sharma, Prathap Somu, Shweta Kodihal Water Switzerland, 2024 The present work explores the process of mathematical representation for the complex geometry of a wide alluvial river with high braiding intensities. It primarily focuses on an approach to developing a numerical solution algorithm for representing the complex channel geometry of the braided Brahmaputra River. Traditional elliptic PDEs with boundary-fitted coordinate transformation were deployed, converting the non-uniform physical plane into a transformed uniform orthogonal computational plane. This study was conducted for the river channel reach with upstream and downstream nodes at Pandu and Jogighopa (reach length ~100 km), respectively, within the Assam flood plain in India, with fourteen measured river cross-sections for the year of 1997. The geo-referenced image covering the river stretch in 1997 was delineated using a ArcGIS software 9.0 tool by digitizing the bank lines. Stream bed interpolation was conducted by interpolating bed elevation from a bathymetrical database onto code-generated mesh nodes. Discretization of the domain was performed through the developed computer code, and the bed-level matrix was generated by the IDW method as well as the MATLAB tool using the nearest neighborhood technique. A mathematical representation of a digital terrain model was thus developed. This generated model was employed as a geometrical data input to simulate secondary flow utilizing 2D depth-averaged equations with the flow dispersion stress tensor as an extra source component, coming from curvilinear flow patterns caused by severe river braiding. The developed model may further be useful in mathematically representing the geometrical complexities of braided rivers with a relatively realistic assessment of the various parameters involved if deployed with improved river modeling with morphometric evolution.
Hydroclimatic projection: statistical learning and downscaling model for rainfall and runoff forecasting Shweta Kodihal, M. P. Akhtar, Satya Prakash Maurya Journal of Water and Climate Change, 2024 The study is carried out to investigate the surface runoff depth with changing precipitation due to climate change in the study area where sandy loam and loamy soil are dominant. In this study, future rainfall is projected by a statistical downscaling model (SDSM) using a set of predictors derived from a Coupled Model Intercomparison Project Phase 6 (CMIP6) global climate model (GCM) [the Norwegian Earth System Model (NorESM)] with updated scenarios SSP 4.5 and SSP 8.5. Daily rainfall values for the observed period (1981 to 2014) are validated using statistical learning and evaluated with matrices, namely, root mean square error (RMSE), coefficient of correlation, and Nash–Sutcliffe efficiency (NSE), which are found to be valid for further predictions. Rainfall projections show a decrease in rainfall trend of 50% from 2030 to 2040 for scenario SSP 4.5 and an increase of 7% from 2040 to 2050. Predicted rainfall for scenario SSP 8.5 shows a similar trend of decreasing rainfall of 24% for the period 2030–2040 and an increase of 19% in the period 2040–2050. Furthermore, these rainfall values are spatially modelled in a geographic information system (GIS) and rainfall maps are obtained. The obtained rainfall map, land-use map, and soil map are overlaid to compute curve numbers and runoff depths. A similar trend of decrease in runoff is observed for the period 2030–2050. The overall trend of climate change shows a water-stressed scenario.
Integrated assessment of urban flooding and heat island interactions: A systematic review of geospatial technologies, machine learning approaches, and microclimate dynamics M Imroz, MP Akhtar, MK Sharma, F Alshehri Journal of Environmental Management 395, 127984 , 2025 2025 Citations: 3
Drought risk assessment using geospatial technique-based NDVI with rain-based drought indices: a case study of Gandak river command in India LB Roy, MP Akhtar, S Kodihal, MT Alam Applied Water Science 15 (11), 291 , 2025 2025
Assessing the Hydro-chemo-mechanical Behavior of Marble Dust-Bentonite Mixes to Be Used as a Geomaterial AK Jain, AK Jha, MP Akhtar Multidisciplinary Approach for Disaster Resilience and Sustainable … , 2025 2025 Citations: 2
Optimizing groundwater recharge potential zone using integrated climate projections: a case study with RCP and SSP scenarios S Kodihal, MP Akhtar Modeling Earth Systems and Environment 11 (3), 155 , 2025 2025
Application of Nanomaterials and Nanotechnology in Geo-Environmental Engineering R Sharma, MP Akhtar, MA Raja, M Imroz Applications of Nanomaterials in Civil and Environmental Engineering … , 2025 2025
Improvement of wastewater treatment process using nanomaterials and nanotechnology M Imroz, A Nath, MP Akhtar, R Sharma Applications of Nanomaterials in Civil and Environmental Engineering … , 2025 2025 Citations: 1
Unveiling urban heat islands: A path to cleaner urban air MP Akhtar, SP Maurya Aerosol Science and Engineering, 1-10 , 2025 2025 Citations: 3
Applications of Nanomaterials in Civil and Environmental Engineering MA Raja, M Daniyal, MP Akhtar, B Gordan 2025
A Numerical Expedition through the Mathematical Representation of Complex Braided Morphometry—A Case Study of Brahmaputra River in India MP Akhtar, CSP Ojha, N Sharma, P Somu, S Kodihal Water 16 (8), 1122 , 2024 2024 Citations: 1
GIS based multi-criteria decision making to identify regional groundwater potential zones: A critical review S Kodihal, MP Akhtar Sustainable Water Resources Management 10 (2), 61 , 2024 2024 Citations: 13
Hydroclimatic projection: statistical learning and downscaling model for rainfall and runoff forecasting S Kodihal, MP Akhtar, SP Maurya Journal of Water and Climate Change 15 (2), 759-772 , 2024 2024 Citations: 9
Sustainable groundwater recharge potential zone identification: an AHP-OWA approach integrating future rainfall and land-use projections S Kodihal, MP Akhtar Water Resources Management 38 (3), 1079-1098 , 2024 2024 Citations: 28
Effects of Stam F-34, Agroxone-3 and Spontox with and without cultural practices on the control of rice weeds RN THAKUR, S NEZAMUDDIN, KN ACARWAL, NN SHARMA, ... Madras Agricultural Journal 54 (aug-aug), 1 , 2023 2023
Investigating effect of soluble sodium sulphate contamination on swell behaviour of untreated and lime-treated soil Shivanshi, AK Jha, MP Akhtar Indian Geotechnical Journal 53 (5), 1114-1128 , 2023 2023 Citations: 3
Marble waste reinforced composite with tunable physico-mechanical and thermal properties: micromechanical simulation assisted experimental investigation FA Faroque, SB Ghosh, S Bandyopadhyay-Ghosh, MP Akhtar, H Pandey Plastics, Rubber and Composites 52 (8), 421-434 , 2023 2023 Citations: 4
A sustainable approach to study and prediction of urban footprints of Jaipur and its growth direction using satellite based-data analysis S Kodihal, MP Akhtar Materials Today: Proceedings , 2023 2023 Citations: 8
Influence of wetting-drying cycles on strength behaviour of cured lime treated soil contaminated with monovalent and divalent sulphatic solutions AK Jha, MP Akhtar Transportation Geotechnics 40, 100988 , 2023 2023 Citations: 15
Physicochemical and strength behavior in lime-treated soil submerged under gypsum and sodium sulfate contamination Shivanshi, AK Jha, MP Akhtar Journal of Hazardous, Toxic, and Radioactive Waste 27 (2), 04023004 , 2023 2023 Citations: 5
Evaluating the behavior of marble dust–bentonite as an alternative to sand–bentonite mixes permeated with electrolyte concentrations AK Jha, AK Jain, MP Akhtar Journal of Hazardous, Toxic, and Radioactive Waste 27 (1), 04022035 , 2023 2023 Citations: 8
Influence of soluble sodium sulphate contamination on physical and strength behavior of untreated and lime treated soil AK Jha, MP Akhtar KSCE Journal of Civil Engineering 26 (9), 3815-3830 , 2022 2022 Citations: 9
MOST CITED SCHOLAR PUBLICATIONS
Braiding process and bank erosion in the Brahmaputra River MP Akhtar, N Sharma, CSP Ojha International Journal of Sediment Research 26 (4), 431-444 , 2011 2011 Citations: 75
Sustainable groundwater recharge potential zone identification: an AHP-OWA approach integrating future rainfall and land-use projections S Kodihal, MP Akhtar Water Resources Management 38 (3), 1079-1098 , 2024 2024 Citations: 28
Assessing the swelling and permeability behavior of novel marble dust–bentonite with sand–bentonite mixes for use as a landfill liner material AK Jain, AK Jha, PM Akhtar Indian Geotechnical Journal 52 (3), 675-690 , 2022 2022 Citations: 18
Influence of wetting-drying cycles on strength behaviour of cured lime treated soil contaminated with monovalent and divalent sulphatic solutions AK Jha, MP Akhtar Transportation Geotechnics 40, 100988 , 2023 2023 Citations: 15
GIS based multi-criteria decision making to identify regional groundwater potential zones: A critical review S Kodihal, MP Akhtar Sustainable Water Resources Management 10 (2), 61 , 2024 2024 Citations: 13
Computational analysis for rainfall characterization and drought vulnerability in Peninsular India MP Akhtar, FA Faroque, LB Roy, M Rizwanullah, M Didwania Mathematical Problems in Engineering 2021 (1), 5572650 , 2021 2021 Citations: 13
Assessment of agricultural potential of a river command using geo-spatial techniques: a case study of Himalayan river project in Northern India MP Akhtar, LB Roy, KM Vishwakarma Applied Water Science 10 (3), 81 , 2020 2020 Citations: 12
River system analysis and management N Sharma Springer Singapore , 2017 2017 Citations: 10
A Morphological Study of Ponticuli of the Human Atlas Vertebrae and its Clinical Significance. M Akhtar, N Fatima, V Kumar 2015 Citations: 10
Hydroclimatic projection: statistical learning and downscaling model for rainfall and runoff forecasting S Kodihal, MP Akhtar, SP Maurya Journal of Water and Climate Change 15 (2), 759-772 , 2024 2024 Citations: 9
Influence of soluble sodium sulphate contamination on physical and strength behavior of untreated and lime treated soil AK Jha, MP Akhtar KSCE Journal of Civil Engineering 26 (9), 3815-3830 , 2022 2022 Citations: 9
A sustainable approach to study and prediction of urban footprints of Jaipur and its growth direction using satellite based-data analysis S Kodihal, MP Akhtar Materials Today: Proceedings , 2023 2023 Citations: 8
Evaluating the behavior of marble dust–bentonite as an alternative to sand–bentonite mixes permeated with electrolyte concentrations AK Jha, AK Jain, MP Akhtar Journal of Hazardous, Toxic, and Radioactive Waste 27 (1), 04022035 , 2023 2023 Citations: 8
Effect of soluble gypsum on swell behaviour of lime-treated expansive soil – a micro-level investigation AMP Shivanshi, Jha A.K., Jain A.K., Singh Vijay Bahadur Geomechanics and Geoengineering, 1-15 , 2021 2021 Citations: 7
A comparative study on regional drought characterization using estimated drought indices in conjunction with trend analysis in peninsular India MP Akhtar, LB Roy, A Sinha Water resources in arid lands: Management and sustainability, 91-110 , 2021 2021 Citations: 6
Non Parametric Trend Analysis of Climate Change in Lower Bagmati River Basin in Northern India MP Akhtar, A Kumar, D Khare International Journal of Scientific Engineering and Technology 4 (9), 461-465 , 2015 2015 Citations: 6
Satellite data based impact assessment of basin characteristics for Brahmaputra River system of India N Sharma, MP Akhtar, B Zeleke World Environmental and Water Resources Congress 2011: Bearing Knowledge for … , 2011 2011 Citations: 6
Physicochemical and strength behavior in lime-treated soil submerged under gypsum and sodium sulfate contamination Shivanshi, AK Jha, MP Akhtar Journal of Hazardous, Toxic, and Radioactive Waste 27 (2), 04023004 , 2023 2023 Citations: 5
Marble waste reinforced composite with tunable physico-mechanical and thermal properties: micromechanical simulation assisted experimental investigation FA Faroque, SB Ghosh, S Bandyopadhyay-Ghosh, MP Akhtar, H Pandey Plastics, Rubber and Composites 52 (8), 421-434 , 2023 2023 Citations: 4
Geotechnical properties and microanalyses of marble dust-bentonite as an alternative geomaterial of sand-bentonite mixes Jain A. K., Jha A.K., Kumar A. & Akhtar M. P. Geomechanics and Geoengineering 2022 , 2022 2022 Citations: 4