Room 2.07b Burnaby Building, Burnaby Road, Portsmouth, PO1 3QL
Tel: +44 (0) 2392 84 2453
I am a senior Lecturer in Hydrogeology and motivated by an interest in the geology of aquifers, which determines the sustainable abstraction regime, constituents in groundwater and often regulates the interactions with surface water. I have been working on groundwater projects mainly in South and South East Asia and contributed over 40 peer-reviewed articles that received over 2200 citations. My main contributions over the past have concerned the behaviour of arsenic in the alluvial aquifers and methodologies to identify low-arsenic zones in the affected regions.
I joined the University of Portsmouth in 2016 having previously worked at the University College London and at Imperial College London. Before moving to the UK, I was engaged in university teaching at Shahjalal University of Science & Technology and researched at the University of Dhaka in Bangladesh.
- PhD in Hydrogeology, University College London, 2010
- PGDip in Water Resources development, Bangladesh University of Engineering Technology, 2004
- MSc in Geology, University of Dhaka, 2001
- BSc (Hons.) in Geology, University of Dhaka, 1999
- 2016 – present, Senior/Lecturer in Hydrogeology, University of Portsmouth, UK
- 2013 - 2016, Research Associate, Imperial College London, UK
- 2010 - 2013, Research Associate, University College London, UK
- 2004 – 2011 Lecturer / Assistant Professor, Shahjalal University of Science Technology, Bangladesh
- 2001 – 2004, Research Assistant, University of Dhaka, Bangladesh
My research aims to improve the understanding of the groundwater system by combining fieldwork, laboratory studies, and modelling. I focus on resource assessment (sustainable pumping regime of aquifers), medical hydrogeology (groundwater constituents, and their interaction in relation to human health), and environmental hydrogeology (role of groundwater in geo-environmental risks). Currently, my research concentrates on the following -
Screening of tubewell arsenic in Bangladesh using technology: Arsenic is one of the major pollutants found in aquifers on a global scale. The screening of tubewells for arsenic has helped many people to avoid drinking from highly polluted wells in the Bengal Delta (West Bengal and Bangladesh). However, there are still many millions of tubewells in Bangladesh yet to be tested, and a substantial proportion of these are likely to contain excessive arsenic. Due to the level of poverty and lack of infrastructure, it is unlikely that the rest of the tubewells will be tested quickly. However, water quality assessment without needing a chemical testing may be helpful in this case. Using well location, depth, along with colour of staining, an assessment of arsenic level in the tubewell could be provided. Social-network technology, combined with increasing use of smartphones, provides a powerful opportunity for both sharing and providing feedback to the user.
Highland springs systems and geo-environmental issues in semi-arid region (Monchique) of Southern Portugal: The Monchique area has a warm Mediterranean climate and mountainous topography, underlain by an igneous intrusion and shale-mud country rocks. High precipitation, up to about 1000 mm/yr, along with faulted, fractured and weathered igneous (syenite) rocks on the higher topography (ca. 900 m O.S.) have given rise to a diverse spring system including the popular Monchique hot springs, valley-fill aquifers, and a few radial rivers including the Aljezur River. The project will develop an integrated conceptual model of hydrology of the Monchique springs, and their role in geo-environmental issues. The project also aims to characterise the water chemistry in relation to human health.
Groundwater risk to radionuclides in Chernobyl Exclusion Zone: The 1986 Chernobyl accident led to the immediate and permanent evacuation of more than 100,000 people from a huge area of land, creating the Chernobyl Exclusion Zone (CEZ). After >30 years as a permanently evacuated area, other options for the CEZ are now being actively considered in Ukraine. The Ukrainian authority has recently requested the end-users of this project, the Chernobyl ECOCENTRE and the State Agency of Ukraine for Exclusion Zone Management (SAUZEM) to develop a new strategy for its future management. Groundwater stored in multi-aquifer systems in the CEZ is an important resource but risk of contamination from radionuclides is not fully understood, particularly for the shallow unconfined aquifer. In the short term after fallout, contamination density declined rapidly due to physical decay of short-lived radionuclides; currently only about 1% of the initial release of radioactivity remains in the environment. Future declines in 137Cs and 90Sr in terrestrial systems are due to physical decay (2.23 and 2.41 % per year respectively), vertical migration in soils and surface runoff. This migration along with existing concentration in the aquifer/s may pose a threat to potential uses of groundwater.
Salinisation and its management in Asian deltas: Salinity is a widespread problem in Asian deltas where most people live, work and feed off the reclaimed land. Episodic storm surges associated with tropical cyclones and low-lying topography are the main factors causing intermittent inundation and contamination of drinking water by salinity. The role of tropical cyclones on long-term salinity of water and soil resources has remained unresolved. The project aim is to broaden the research community’s understanding of water resources salinisation and its temporal dimension. This will link to water security practice, and influence water management policy, for impoverished communities in Asian delta coastal areas. Consequently, it will help formulate climate change adaptation strategies, in relation to sea level rise and increased cyclonic activity, both in Bangladesh as well as for other Asian deltas.
Level 5: Hydrology & Freshwater Ecosystems, Geo-environmental Risk Management (U20039, S20039 & U20131)
Level 6: Contaminated Land (U20048 & S20048)
Level 7: Geotechnics and Groundwater (U20138 & U20126) and Contaminated Land Assessment & Remediation (U20136)
Contribute to: Environmental fieldwork & professional skills, and student research projects