Three areas along the Yarlung-Zangbo river zone for which previous magnetotelluric (MT) data are available were inverted independently using a three-dimensional MT inversion algorithm ModEM.
The total area of river zone is about 9,700 Ha, with approximately 1,600 Ha of land is under water and 8,100 Ha is dry land (Delhi Master Plan 2021).
The total area of river zone is about 9700 Ha, out of which approximately 1600 Ha of land is under water and 8100 Ha is dry land which also causes direct runoff pollution into the river (Delhi master Plan 2021; Sharma et al. 2011).
An investigation of a tetrachloroethene (PCE) groundwater plume originating at a dry cleaning facility on a sand aquifer and discharging to a river showed that the near-river zone strongly modified the distribution, concentration, and composition of the plume prior to discharging into the surface water.
Spatial and temporal variations in the plume entering the near-river zone contributed to the complex contaminant distribution observed in the streambed where concentrations varied by factors of 100 to 5000 over lateral distances of less than 1 to 3.5 m.
The most important effect of the near-river zone on the plume was the extensive anaerobic biodegradation that occurred in the top 2.5 m of the streambed, even though essentially no biodegradation of the PCE plume was observed in the upgradient aquifer.
Recent sediments of coastal sands and alluvium occupy the areas close to the river mouth zones (Vembanad Lake).
Simulation results demonstrate that the cumulative U VI) flux to the Columbia River is less responsive to fine scale heterogeneity in permeability and more sensitive to the distribution of permeability within the river hyporheic zone and mean permeability of larger-scale geologic structures at the site.
"Roads, rivers, 'buffer zones' of empty land, and other barriers were constructed and modified to keep people separate.
Historically, Botswana had three regions where FMD outbreaks were likely to occur, namely the Ngamiland (now Zones 2a, 2b, 2c, 2d, 2e, 2f) and Chobe area (now Zone 1), the Boteti river area (now Zone 4a) and the Nata area (now Zone 3b) (Falconer 1972; Mokopasetso and Derah 2005) which are areas with concentrated African buffalo (Syncerus caffer) populations.
