In: Journal of Hydrology and Hydromechanics, vol. 67, no. 1
Polona Vreča - Mihael Brenčič - Anja Torkar
Detaily:
Rok, strany: 2019, 32 - 40
Kľúčové slová:
Snowmelt; Passive capillary sampler; Oxygen and hydrogen isotopes; Balanced hierarchical sampling design;
ANOVA; Slovenia.
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
In this paper we describe the use of modified passive capillary samplers (PCSs) to investigate the water isotope
variability of snowmelt at selected sites in Slovenia during winter 2011/2012 and during winter 2012/2013. First,
PCS with 3 fibreglass wicks covering approximately 1 m2 were tested to determine sample variability. We observed high
variability in the amount of snowmelt water collected by individual wick (185 to 345 g) and in the isotope composition
of oxygen (δ18O −10.43‰ to −9.02‰) and hydrogen (δ2H −70.5‰ to −63.6‰) of the collected water. Following the initial
tests, a more detailed investigation was performed in winter 2012/2013 and the variability of snowmelt on the local
scale among the different levels (i.e. within group, between the close and more distant groups of wicks) was investigated
by applying 30 fibreglass wicks making use of Analysis Of Variance (ANOVA) and a balanced hierarchical sampling
design. The amount of snowmelt water collected by an individual wick during the whole experiment was between 116
and 1705 g, while the isotope composition varied from −16.32‰ to −12.86‰ for δ18O and from −120.2‰ to −82.5‰ for
δ2H. The main source of variance (80%) stems from the variability within the group of wicks (e.g. within group) while
other sources contribute less than 20% of the variability. Amount weighted samples for the 2012–2013 season show no
significant differences among groups, but significant differences for particular sampling events were observed. These investigations
show that due to the variability within the group of wicks, a large number of wicks (> 5) are needed to sample
snowmelt.
Ako citovať:
ISO 690:
Vreča, P., Brenčič, M., Torkar, A. 2019. Application of passive capillary samplers in water stable isotope
investigations of snowmelt – A case study from Slovenia. In Journal of Hydrology and Hydromechanics, vol. 67, no.1, pp. 32-40. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2018-0017
APA:
Vreča, P., Brenčič, M., Torkar, A. (2019). Application of passive capillary samplers in water stable isotope
investigations of snowmelt – A case study from Slovenia. Journal of Hydrology and Hydromechanics, 67(1), 32-40. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2018-0017
O vydaní: