In: Journal of Hydrology and Hydromechanics, vol. 67, no. 1
Andrea Rücker - Massimiliano Zappa - Stefan Boss - Jana Von Freyberg
Detaily:
Rok, strany: 2019, 20 - 31
Kľúčové slová:
Snowmelt lysimeter; Snowmelt collection; Snowmelt rate; Stable water isotopes.
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
The contribution of snow meltwater to catchment streamflow can be quantified through hydrograph separation
analyses for which stable water isotopes (18O, 2H) are used as environmental tracers. For this, the spatial and temporal
variability of the isotopic composition of meltwater needs to be captured by the sampling method. This study compares
an optimized snowmelt lysimeter system and an unheated precipitation collector with focus on their ability to capture
snowmelt rates and the isotopic composition of snowmelt. The snowmelt lysimeter system consists of three individual
unenclosed lysimeters at ground level with a surface of 0.14 m2 each. The unheated precipitation collector consists of a
30 cm-long, extended funnel with its orifice at 2.3 m above ground. Daily snowmelt samples were collected with both
systems during two snowfall-snowmelt periods in 2016. The snowmelt lysimeter system provided more accurate measurements
of natural melt rates and allowed for capturing the small-scale variability of snowmelt process at the plot scale,
such as lateral meltwater flow from the surrounding snowpack. Because of the restricted volume of the extended funnel,
daily melt rates from the unheated precipitation collector were up to 43% smaller compared to the snowmelt lysimeter
system. Overall, both snowmelt collection methods captured the general temporal evolution of the isotopic signature in
snowmelt.
Ako citovať:
ISO 690:
Rücker, A., Zappa, M., Boss, S., Von Freyberg, J. 2019. An optimized snowmelt lysimeter system for monitoring melt rates and
collecting samples for stable water isotope analysis. In Journal of Hydrology and Hydromechanics, vol. 67, no.1, pp. 20-31. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2018-0007
APA:
Rücker, A., Zappa, M., Boss, S., Von Freyberg, J. (2019). An optimized snowmelt lysimeter system for monitoring melt rates and
collecting samples for stable water isotope analysis. Journal of Hydrology and Hydromechanics, 67(1), 20-31. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2018-0007
O vydaní: