Tissa Illangasekare - Selected Publications#

1. Particle Size Distribution, Concentration, and Magnetic Attraction Affect Transport of Polymer-Modified Fe0 Nanoparticles in Sand Columns (T Phenrat, HJ Kim, F Fagerlund, T Illangasekare, RD Tilton, GV Lowry), Environmental science & technology 43 (13), 5079-5085, 2009; 324 citations (Google scholar December 2021). This example paper present is the continuation of the nominee’s work on the use of intermediate scale testing pioneered by the nominee that was used to test an innovative and a novel technology that used concentrated suspensions of polymer-modified Fe0 nanoparticles.

2. Experimental study of movement and distribution of dense organic contaminants in heterogeneous aquifers (TH Illangasekare, JL Ramsey Jr, KH Jensen, MB Butts), Journal of Contaminant Hydrology 20 (1-2), 1-25, 1995; 228 citations. This is one of the earliest experimental study of the migration of denser-than-water nonaqueous-phase organic contaminants through heterogeneous porous media that helped in model conceptualization and develop characterization strategies in aquifer remediation.

3. Retention of Greenland runoff by refreezing: implications for projected future sea level change (WT Pfeffer, MF Meier, TH Illangasekare, Journal of Geophysical Research: Oceans 96 (C12), 22117-22124, 1991; 204 citations. Before the recognition of the arctic glacier melting is a primary contributor to sea-level rise, this early model describes in a simple way the transient process of infiltration, refreezing, and runoff from glaciers a future warming climate.

4. Virtual sensor networks-a resource efficient approach for concurrent applications (AP Jayasumana, Q Han, TH Illangasekare), Fourth International Conference on Information Technology (ITNG'07), 111-115, 2007); 161 citations; introduced a new method for resource efficient real-time monitoring of groundwater contaminant plumes using wireless sensor networks.

5. Effect of groundwater flow dimensionality on mass transfer from entrapped nonaqueous phase liquid contaminants (T Saba, TH Illangasekare), Water Resources Research 36 (4), 971-979, 2000; 146 citations. Most laboratory studies of entrapped multiphase organic contaminants dissolution have been one‐dimensional that does not capture the effects of flow bypassing due to entrapment thus overestimation of dissolution, thus introducing significant errors. This is an early intermediate scale experimental and modeling study where the flow dimensionality was factored in estimating the dissolution rates.

6. Impacts of the 2004 tsunami on groundwater resources in Sri Lanka (T Illangasekare, SW Tyler, TP Clement, KG Villholth, A Perera, ...), Water Resources Research 42 (5), 2006; 135 citations; This is a first in a series where the persistence of salinity in shallow coastal aquifers was studied. The subsequent work used intermediate scale test pioneered by Illangasekare to develop a conceptual model describing the persistence.

7. A mathematical model for flow and solute transport in non-homogeneous rock fractures (B Amadei, T Illangasekare), International Journal of Rock Mechanics and Mining Sciences & Geomechanics, 31(6), 719-731, 1994; 119 citations. a numerical algorithm for determining water flow and solute transport in a single rectangular rock fracture with variable aperture and surface roughness. The flow is laminar and steady.

8. Two-dimensional laboratory simulation of LNAPL infiltration and redistribution in the vadose zone (C Kechavarzi, K Soga, TH Illangasekare, 2005); 105 citations; Journal of contaminant hydrology 76 (3-4), 211-233.

9. Trautz, Andrew C., Tissa H. Illangasekare, and Ignacio Rodriguez-Iturbe. "Role of co-occurring competition and facilitation in plant spacing hydrodynamics in water-limited environments." Proceedings of the National Academy of Sciences 114.35 (2017): 9379-9384.

10. Exploring the Impacts of Source Condition Uncertainties on Far‐Field Brine Leakage Plume Predictions in Geologic Storage of CO2: Integrating Intermediate Scale Experiments and Modeling Water Resources Research 57 (9), e2021WR029679

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