§0 Introduction By far the most central and important question about laws of nature is this: Are they mere patterns in the phenomena (patterns that are in some way salient, to be sure—but still, nothing more than patterns)? Or are they something more, something that somehow governs or constrains those phenomena? Disagreement over this issue constitutes the Schism in contemporary philosophical w...

the mikkes basin is located at the north center of morocco. it comprises three different zones which represent diversified geologies which shelter a phreatic and confined aquifer in the sais basin and a shallow aquifer in the tabular middle atlas. the springs in the sais phreatic aquifer have suffered a maximum depletion. the springs with a deep or mixed origin are known as low flow variation s...

Oscillatory pumping tests-in which flow is varied in a periodic fashion-provide a method for understanding aquifer heterogeneity that is complementary to strategies such as slug testing and constant-rate pumping tests. During oscillatory testing, pressure data collected at non-pumping wells can be processed to extract metrics, such as signal amplitude and phase lag, from a time series. These me...