منابع مشابه
Groundwater dominated rivers
This paper explores the signi®cance of groundwater dominance in the surface water system through a combination of review and an exposition of the general hydrology, ecology and geomorphology of rivers draining the main UK aquifers. Groundwater dominance is shown to vary according to the nature of the aquifer lithology, the mechanism of groundwater:surface water interaction and the scale at whic...
متن کاملThe ecological significance of exchange processes between rivers and groundwater
1. This review focuses on the connectivity between river and groundwater ecosystems, viewing them as linked components of a hydrological continuum. Ecological processes that maintain the integrity of both systems and those that are mediated by their ecotones are evaluated. 2. The hyporheic zone, as the connecting ecotone, shows diverse gradients. Thus it can be characterized by hydrological, ch...
متن کاملDistribution of pesticides and bisphenol A in sediments collected from rivers adjacent to coral reefs.
To investigate the deteriorating health of coral reefs in Okinawa, Japan, natural sediment samples were analyzed for diuron, Irgarol 1,051, chlorpyrifos, and bisphenol A (BPA) which are hazardous to corals. Samples were analyzed by solid-phase extraction (SPE) followed by high-performance liquid chromatography with tandem mass spectrometry (LC-MS-MS). Although diuron and chlorpyrifos usage is o...
متن کاملApplication Of Stochastic Methods To Creating Models Of Contaminant Transport And Dispersion In Rivers And Groundwater
Purely stochastic methods can yield useful prediction models of contaminant arrival-time distributions derived from advective-dispersive transport in a variety of one-dimensional environments. Two different models are considered, both relating to dispersion of a brief pulse of conservative contaminant in a steady flow system. The first model considers the arrival-time of a contaminant pulse in ...
متن کاملSimulated groundwater interaction with rivers and springs in the Heihe river basin
Surface water and groundwater in the Heihe river basin of China are interconnected and the pattern of water resources exploitation has a direct effect on the interaction of groundwater and surface water, especially on a downstream oasis. A threedimensional groundwater flow simulation model with eight model layers was established to simulate the regional groundwater flow in the multilayered aqui...
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ژورنال
عنوان ژورنال: Journal of applied mechanics
سال: 2004
ISSN: 1345-9139,1884-832X
DOI: 10.2208/journalam.7.929