TY - JOUR AU - Yasuteru Kobi, AU - Kazuya Inoue, AU - Tsutomu Tanaka, PY - 2016/12/03 Y2 - 2024/03/29 TI - ASSESSING TEMPORAL MOMENT CHARACTERISTICS OF SOLUTE TRANSPORT PHENOMENA IN HETEROGENEOUS AQUIFERS USING RANDOM WALK PARTICLE TRACKING JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 12 IS - 33 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/1244 SP - 114-121 AB - <p>Solute transport phenomenon is one of the crucial issues in predicting and spreading of a<br>contaminant plume in natural aquifers. In this study, conservative solute transport simulations were<br>conducted in two-dimensional heterogeneous aquifers to assess the transitional development of temporal<br>moment characteristics up to the fourth order associated with macrodispersion phenomena. The aquifer<br>system investigated here relied on the hydrogeologic data in the southwest of the Netherlands and was<br>modeled as the heterogeneous aquifer with a certain geometric variance. Three types of physical<br>heterogeneities in subsurface materials were represented as randomly correlated hydraulic conductivity fields,<br>which were geostatistically generated under the isotropic assumption of the correlation length. Random walk<br>particle tracking linked with temporal moment approach, which was based on observed breakthrough curves<br>at several predefined control planes, demonstrated asymptotic variations of the second and fourth moments.<br>Results also showed that the degree of the physical heterogeneity affected the degree of the increase of each<br>moment, indicating that this plume behavior reflected the hydraulic conductivity distribution on which the<br>evolution of plume was considerably dependent.<br><br></p> ER -