PUBLICATIONS
"Riverbank Erosion Assessment of Sandha River and Identification the Human Induced Key Factor"
Research Key Words: Riverbank Erosion, Sediment Mining, Remote Sensing, GIS, Elevation Profiles.
Human activities strongly influence the local river morphology of Babuganj, a subdistrict of Barishal district, Bangladesh. Among these, excessive sediment mining from riverine places, river bank,river bed and flood plain along with bar skimming evidently disturb the dynamic balance of Sandha River. In last nine years, the land use pattern of Rahmatpur and Dehergati has been changed dramatically. more than 24 brickfields already running there among them 18 brickfields have established in last nine years at the study area. These brickfields using fluvial sediment as raw material entirely extracted from Sandha River. This huge amount of sediment mining from the riverine places disrupts the local river dynamic and promote devastating bank erosion. The amount of bank consumption is higher than amount of sediment deposition at the study area and net bank erosion is about 124 acres. Primary data, Elevation profiles, Normalized Difference Water Index (NDWI), Land Use/Land Cover (LULC) and Satellite Images strongly support the research outcome.
Land Use/Land Cover map of Study area in 2020
Elevation profiles of Dehergati study point of study area in 2020
Normalized Difference Water Index of study area in 2020
Evaluating bank erosion and
identifying possible anthropogenic causative factors of Kirtankhola River in Barishal, Bangladesh: an
Integrated GIS and Remote Sensing approaches
Research key words: Riverbank Erosion, Hydraulic waves, Remote Sensing (RS), GIS, Centrifugal force.
Every year a huge amount of land consumed by rivers specifically during monsoon time this bank erosion is horrible in Barishal. Kirtankhola is a meandering river. At every meander point, bank erosion is pronounced triggered by hydraulic waves caused by speedy motorized boats. Since 2009, the number of large scales sophisticated launch, boats have been rapidly increasing. Busy river traffic is a feasible reason to facilitate bank erosion. Deforestation, excessive sand extraction from the river bed, poor navigability might be other subsidiary factors that facilitate this devastating riverbank erosion. Centrifugal force is formed at semicircular meandering points where the angular velocity and r values are maximum and maybe produce strong centrifugal force due to the speedy motion of the motorized vessel and further form steady strong hydraulic waves that hit consistently on the unconsolidated banks of the river and ultimately cause mega erosion.
Chart is based on a questionnaire survey during research work
Migration map of Kirtankhola River
POSTGRADUATE PROJECTS
“How Deep Aquifers are Considered Safe: A Comparative Analysis of Hydrogeochemistry in the Coastal Aquifers of Southern Bangladesh”
Project Supervisor: Muhammad Risalat Rafiq
(February 2021 – Present)
This project was conducted to detect the arsenic in subsurface aquifers. Arsenic may arise into an unconfined shallow aquifer but surprisingly we got the existence of this poisonous element into a deep confined aquifer in Betagi, Bakerganj, Barishal and Nalchiti. We also detected arsenic in a shallow aquifer with high range. We identified groundwater scarcity at some remote rural area due to groundwater mismanagement. We measured hydrochemical parameters both in situ at the field as well as a laboratory of Dept. of Geology & Mining. In addition, we got a relationship between Electric conductivity value ranges and subsurface aquifer depth.
Arsenic testing of sampled water
Cation analysis by Flame photometer
Result documentation
In situ hydrochemical parameter analysis
UNDERGRADUATE PROJECTS
"Risk of groundwater salinization in an Asian Mega-delta under global change:
Evidence from the Bengal Basin"
Project Supervisor: Dr. Md. Izazul Haq
(June, 2018 – October, 2020)
This project has been conducted in the coastal region of Bangladesh. How subsurface water chemistry influenced by storm surge? We conducted intensive fieldwork to collect the data. Win Situ data logger, Aqua troll, Baro troll device packages and Win-Situ software packages have been used. We collected time-series data from different wells placed in Barishal, Amtoli, Kuakata, Patharghata, Khulna and Shyamnagar after six months’ interval. Every time before Installing the logger, it is routine work to measure current groundwater level with a water sensitivity groundwater table meter. It is a very complex task to install the devices and extract data from the loggers, need to be careful to finish the task properly. We completed the primary data collection stage that had been running for more than two years.
Sub-surface water level measurement, at Shyamagar, Satkhira
"Interaction between the rivers and aquifers and its impact on saline water distribution in Barishal"
Project Supervisor: Dr. Dhiman Kumer Roy (PhD, Japan)
(February, 2018 – November, 2018)
This project was conducted in 2018. Presence of salinity in aquifers in Barishal is a rising problem. There were some feasible reasons to exist the salinity in groundwater. We tried to track the sources of saline water. Kirtankhola river is nearby of Barishal city. Growing urbanization leads to draw down the aquifer level gradually at Barishal city. We got the interaction between the groundwater level fluctuation and tidal effect from Kirtankhola river adjacent to the city. So river water could be a source of saline water intrusion in groundwater. We tested the hydrochemical parameters such as Electric conductivity, pH from both subsurface and surface water sources at Barishal city. The project supervisor was Dr Dhiman Kumer Roy (PhD, Japan)
During in situ water analysis
With my team mates
PUBLICATIONS
1. Roy, D.k., Goswami, S., Rafiq, M.R., Hossain, J.M., Ahmed, M.K., Fuad, M.I.M., Rahman, S.A., Ahamed, A., Islam, T., Islam, M.M., (2022) “Land Use and Land Cover Change Detection Using Geospatial Techniques and Their Impact on Water Resources in Barishal City Corporation, Barishal,
Bangladesh”. The Egyptian Journal of Remote Sensing and Space Science (Manuscript submitted).
2. Rahman, S.A., Islam, M.M., Salman, M.A., Rafiq, M.R., (2022), “Evaluating bank erosion and
identifying possible anthropogenic causative factors of Kirtankhola River in Barishal, Bangladesh: an
Integrated GIS and Remote Sensing approaches” International Journal of Engineering and Geosciences
(IJEG).
3. Islam, M.M., (2021), “Riverbank Erosion Assessment of Sandha River and Identification the Human
Induced Key factor by Using GIS and Remote Sensing Method” 6th International Conference on
Engineering Research, Innovation and Education (ICERIE 2021).
4. Islam, M.M., Hossain, R.M., (2020) “Assessment Consequence Impacts of Tropical Cyclone Aila and
Vulnerability Using Remote Sensing and GIS: A Case Study at Kalabogi” 4th International Conference
on Bangladesh Environment (ICBEN-4, 2020) (abstract published).