Ajit Joshi

Research Areas

Sedimentary Basin Analysis, Geomechanics, Hydrogeology, Groundwater Sustainability Studies

Education

• Ph.D. & M.S., Geology, University of Missouri-Columbia, USA
• M.Sc. & B.Sc., Geology, Tribhuvan University, Nepal

Research Interests

I am a hydrogeologist with research focus on studying subsurface flow of groundwater and other fluids (petroleum/natural gas) in geologic porous medium. I use numerical models combined with field and laboratory measurements to understand flow behavior and how it affects various geologic processes, for example, mechanism of hydrocarbon transport in low permeability shale-rich hydrocarbon source-rocks deep in the sedimentary basins, contaminant/solute transport by groundwater flow in shallow aquifer/aquitard systems, land subsidence by groundwater pumping from subsurface sand/sandstone aquifer systems, slips along fault/plate boundaries associated with fluid flow, etc. My research also aims at understanding how geologic heterogeneity affects flow behavior and how it affects other subsurface processes. Besides, I am also interested in environmental research such as climate change and its impact on water resources, issues related to groundwater quantity and quality due to natural and anthropogenic causes, salt-water intrusion near coastal groundwater aquifer systems, groundwater flow dynamics along riparian and hyporheic zones that can affect nearby ecosystems, etc. I am deeply passionate about the natural environment and its protection and conservation for the benefit of future human generations.

Selected Publications

• Joshi, A., Aichi, M. and Tokunaga, T. (2021) Poroelastic modeling of a heterogeneous geologic medium: a case study from Kanto basin in Japan. Groundwater, vol. 59(3), 453-467.
• Joshi, A. and Appold, M.S. (2017) Numerical modeling of porosity waves in the Nankai accretionary wedge decollement: Implications for aseismic slip. Hydrogeology Journal, vol. 25(1), 249-264.
• Joshi, A. and Appold, M.S. (2016) Potential of porosity waves for methane transport in the Eugene Island field of the Gulf of Mexico basin. Marine and Petroleum Geology, vol. 75, 1-13.
• Joshi, A., Appold, M.S. and Nunn, J.A. (2012) Evaluation of solitary waves as a mechanism for oil transport in elastic porous media: a case study of the South Eugene Island field, Gulf of Mexico Basin. Marine and Petroleum Geology, vol. 37 (1), 53-69.