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Abstract Temperature profiles (temperature as function of depth) can be used to derive vertical flow velocities or recharge rates. In many cases, solutions to the one-dimensional (1-D) heat transport equation are used, considering steady-state boundary conditions. Factors which can influence the derivation of the mean vertical flow velocity are studied here. Therefore, an explicit finite-difference approximation to the 1-D heat transport equation coupled with an inverse scheme was used to interpret temperature profiles. Measurement error (larger than 0.05°C) can result in important deviation of the derived mean flow velocity. Variation of vertical flow velocity as a function of time leads to asymmetric temperature envelopes. Yearly variation in vertical flow velocities, or temperature variations of the recharge water, also results in asymmetric temperature envelopes. Interpretation of these asymmetric envelopes leads to important differences between derived and actual mean vertical flow velocities. Citation Vandenbohede, A. &; Lebbe, L. (2010) Recharge assessment by means of vertical temperature profiles: analysis of possible influences. Hydrol. Sci. J. 55(5), 792–804. 相似文献
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《水文科学杂志》2013,58(2):272-273
Résumé Dans la vallée du Merguellil (Tunisie centrale), le Barrage El Haouareb est implanté sur un seuil hydraulique karstique. Sa construction a totalement bouleversé les circulations superficielles et souterraines. L'eau désormais massivement infiltrée sous le barrage se mélange avec la nappe d'Aïn El Beidha, présente dans le bassin amont, et alimente le karst qui se déverse dans la grande nappe alluviale de la plaine de Kairouan. L'analyse isotopique (2H, 3H, 18O) de ces différents compartiments permet de préciser le bilan en eau régional et d'affiner sensiblement les informations hydrodynamiques existantes. Pour les périodes échantillonnées, la contribution des eaux du barrage à l'alimentation du karst varie de 21 à 66%; elle augmente avec la hauteur d'eau présente dans la retenue. Les eaux ainsi infiltrées depuis la construction du barrage ont déjà largement “contaminé” les sept premiers kilomètres de la nappe alluviale. Celle-ci garde cependant encore la trace de son ancien mode de recharge par infiltration des fortes crues de l'oued. 相似文献
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《水文研究》2003,17(1):187-188
Comments by, and interviews with, authors, editors, and others responsible for carefully and dutifully shepherding intellecutal thoughts into published text will soon appear in this section. Dr. Jeff J. McDonnell, editor of HPToday, has approved the inclusion of this new feature. The rational in this decision to forgo a critical second opinion on the value of the book stems from our observation that books received by HPToday have often been reviewed by other respectable press (e.g., NY Times Book Review, Science Book Review, etc.), and a more unique angle might interest Hydrological Processes readers. The first group of authors has responded favourably to the notion of explaining their inspirations and frustrations and intentions in creating a published work. Please keep coming back to read more about the hydrological field! Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
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《水文研究》2002,16(15):3103-3103
Several wonderful books arrived at SUNY ESF this spring and summer while the book review responsibilities were transferring from Helmut Elsenbeer to Theodore Endreny. Many of these books have found a reviewer, but others are still available. If the readers see a book that they would like to review, you are encouraged to E‐mail: te@esf.edu and enquire about writing a review. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
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