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Catchment water storage variation with elevation
Univ Zurich, Dept Geog, Zurich, Switzerland..
Univ Freiburg, Fac Environm & Nat Resources, Freiburg, Germany..
Univ Freiburg, Fac Environm & Nat Resources, Freiburg, Germany..
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Luft-, vatten och landskapslära. Univ Zurich, Dept Geog, Zurich, Switzerland..ORCID-id: 0000-0002-6314-2124
Vise andre og tillknytning
2017 (engelsk)Inngår i: Hydrological Processes, ISSN 0885-6087, E-ISSN 1099-1085, Vol. 31, nr 11, s. 2000-2015Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

One of the most important functions of catchments is the storage of water. Catchment storage buffers meteorological extremes and interannual streamflow variability, controls the partitioning between evaporation and runoff, and influences transit times of water. Hydrogeological data to estimate storage are usually scarce and seldom available for a larger set of catchments. This study focused on storage in prealpine and alpine catchments, using a set of 21 Swiss catchments comprising different elevation ranges. Catchment storage comparisons depend on storage definitions. This study defines different types of storage including definitions of dynamic and mobile catchment storage. We then estimated dynamic storage using four methods, water balance analysis, streamflow recession analysis, calibration of a bucket-type hydrological model Hydrologiska Byrans Vattenbalansavdelning model (HBV), and calibration of a transfer function hydrograph separation model using stable isotope observations. The HBV model allowed quantifying the contributions of snow, soil and groundwater storages compared to the dynamic catchment storage. With the transfer function hydrograph separation model both dynamic and mobile storage was estimated. Dynamic storage of one catchment estimated by the four methods differed up to one order of magnitude. Nevertheless, the storage estimates ranked similarly among the 21 catchments. The largest dynamic and mobile storage estimates were found in high-elevation catchments. Besides snow, groundwater contributed considerably to this larger storage. Generally, we found that with increasing elevation the relative contribution to the dynamic catchment storage increased for snow, decreased for soil, but remained similar for groundwater storage.

sted, utgiver, år, opplag, sider
2017. Vol. 31, nr 11, s. 2000-2015
Emneord [en]
elevation gradient, HBV, storage estimation, Swiss Alps, tracer hydrology, TRANSEP, water availability
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-328177DOI: 10.1002/hyp.11158ISI: 000402884100002OAI: oai:DiVA.org:uu-328177DiVA, id: diva2:1134843
Tilgjengelig fra: 2017-08-21 Laget: 2017-08-21 Sist oppdatert: 2018-01-13bibliografisk kontrollert

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