
L’équivalent en eau de la couche de neige est une mesure de la quantité d’eau accumulée sous forme de neige, pendant une période donnée en jours, en semaines ou en mois. Pour l’économie hydraulique, cette quantité exprime la réserve nivale, mieux que ne peuvent le faire simplement les données sur les conditions d’enneigement. Cette quantité et ses variations jouent un rôle important dans le bilan hydrique, aussi bien dans les petits bassins versants que dans les grands bassins fluviaux.
L’equivalente in acqua del manto nevoso rappresenta la riserva idrica accumulata nella coltre di neve in giorni, settimane o mesi. Esso assume nell’economia dell’acqua un rilievo superiore rispetto allo spessore del manto. In veste di contributo di bilancio tale riserva è significativa tanto nei piccoli bacini imbriferi quanto nei bacini fluviali.
Das Wasseräquivalent der Schneedecke beschreibt den in der Schneedecke über Tage, Wochen oder Monate gespeicherten Wasservorrat. Es beinhaltet für wasserwirtschaftliche Belange eine grössere Aussagekraft als die Schneehöhe. Als wasserhaushaltliche Speichergrösse ist es sowohl in kleinen Einzugsgebieten als auch in Flussgebieten von Bedeutung.
The water equivalent of the snow cover describes the amount of water stored in the snow cover for a period of days, weeks or months. For the water management it conveys far more information than the depth of snow. As a term of the water balance, it is relevant to small basins as well as to the large catchments.
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