On the reproducibility and repeatability of laser absorption spectroscopy measurements for δ&amp;lt;sup&amp;gt;2&amp;lt;/sup&amp;gt;H and δ&amp;lt;sup&amp;gt;18&amp;lt;/sup&amp;gt;O isotopic analysis

Penna, Daniele; Stenni, Barbara; Šanda, Martin; Wrede, S.; Bogaard, Thom; Gobbi, A.; Borga, Marco; Fischer, Benjamin; Bonazza, Mattia; Chárová, Z.

doi:10.5194/hess-14-1551-2010

Cited by 120 publications

(101 citation statements)

References 30 publications

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“…Analysis was carried out using a laser spectroscope of LGR Inc. at the LWIA v2 facility of the Czech Technical University in Prague (Penna et al, 2010). Samples and standards were measured in seven injections per vial.…”

Section: Sampling and Laboratory Analysismentioning

confidence: 99%

Rainwater propagation through snowpack during rain-on-snow sprinkling experiments under different snow conditions

Juras

Würzer²,

Pavlásek

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. The mechanisms of rainwater propagation and runoff generation during rain-on-snow (ROS) events are still insufficiently known. Understanding storage and transport of liquid water in natural snowpacks is crucial, especially for forecasting of natural hazards such as floods and wet snow avalanches. In this study, propagation of rainwater through snow was investigated by sprinkling experiments with deuterium-enriched water and applying an alternative hydrograph separation technique on samples collected from the snowpack runoff. This allowed us to quantify the contribution of rainwater, snowmelt and initial liquid water released from the snowpack. Four field experiments were carried out during winter 2015 in the vicinity of Davos, Switzerland. Blocks of natural snow were isolated from the surrounding snowpack to inhibit lateral exchange of water and were exposed to artificial rainfall using deuterium-enriched water. The experiments were composed of four 30 min periods of sprinkling, separated by three 30 min breaks. The snowpack runoff was continuously gauged and sampled periodically for the deuterium signature. At the onset of each experiment antecedent liquid water was first pushed out by the sprinkling water. Hydrographs showed four pronounced peaks corresponding to the four sprinkling bursts. The contribution of rainwater to snowpack runoff consistently increased over the course of the experiment but never exceeded 86 %. An experiment conducted on a non-ripe snowpack suggested the development of preferential flow paths that allowed rainwater to efficiently propagate through the snowpack limiting the time for mass exchange processes to take effect. In contrast, experiments conducted on ripe isothermal snowpack showed a slower response behaviour and resulted in a total runoff volume which consisted of less than 50 % of the rain input.

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Section: Sampling and Laboratory Analysismentioning

confidence: 99%

Rainwater propagation through snowpack during rain-on-snow sprinkling experiments under different snow conditions

Juras

Würzer²,

Pavlásek

et al. 2017

Hydrol. Earth Syst. Sci.

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“…Stable isotopes were measured using a liquid-water stable isotope analyser DLT-100 (Los Gatos Research) at the Hydrogeology Department of the University of Corsica, France, according to the analytical scheme recommended by the IAEA (Penna et al, 2010). The quality of the isotopic analysis was checked using a standard deviation condition up to 1 ‰ for δ 2 H and up to 0.1 ‰ for δ 18 O.…”

Section: Geochemistrymentioning

confidence: 99%

Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

Santoni

Huneau

Garel

et al. 2016

Journal of Hydrology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…The isotopic composition of the water samples was determined at the Laboratory of Isotope and Forest Hydrology of the University of Padova (Italy), Department of Land, Environments, Agriculture and Forestry by an off-axis integrated cavity output spectroscope (model DLT-100 908-0008, Los Gatos Research Inc., USA). The analysis protocol and the procedure adopted to minimize the carry-over effect are described in Penna et al (2010Penna et al ( , 2012. The typical instrumental precision (average standard deviation of 2094 samples) is 0.5 ‰ for δ 2 H and 0.08 ‰ for δ 18 O. EC was measured in the field using a portable conductivity meter (WTW 3410, WTW GmbH, Germany) with a precision of ±0.1 µS cm −1 .…”

Section: Laboratory Analysismentioning

confidence: 99%

Tracer-based analysis of spatial and temporal variations of water sources in a glacierized catchment

Penna

Engel

Mao

et al. 2014

Hydrol. Earth Syst. Sci.

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116

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Abstract. Snow-dominated and glacierized catchments are important sources of fresh water for biological communities and for populations living in mountain valleys. Gaining a better understanding of the runoff origin and of the hydrological interactions between meltwater, streamflow and groundwater is critical for natural risk assessment and mitigation as well as for effective water resource management in mountain regions. This study is based on the use of stable isotopes of water and electrical conductivity as tracers to identify the water sources for runoff and groundwater and their seasonal variability in a glacierized catchment in the Italian Alps. Samples were collected from rainfall, snow, snowmelt, ice melt, spring and stream water (from the main stream at different locations and from selected tributaries) in 2011, 2012 and 2013. The tracer-based mixing analysis revealed that, overall, snowmelt and glacier melt were the most important endmembers for stream runoff during late spring, summer and early fall. The temporal variability of the tracer concentration suggested that stream water was dominated by snowmelt at the beginning of the melting season (May-June), by a mixture of snowmelt and glacier melt during mid-summer (Julyearly August), and by glacier melt during the end of the summer (end of August-September). The same seasonal pattern observed in streamflow was also evident for groundwater, with the highest electrical conductivity and least negative isotopic values found during cold or relatively less warm periods, when the melt of snowpack and ice was limited. Particularly, the application of a two-component mixing model to data from different springs showed that the snowmelt contribution to groundwater recharge varied between 21 % (±3 %) and 93 % (±1 %) over the season, and the overall contribution during the three study years ranged between 58 % (±24 %) and 72 % (±19 %). These results provided new insights into the isotopic characterization of the study catchment presenting further understanding of the spatio-temporal variability of the main water sources contributing to runoff.

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On the reproducibility and repeatability of laser absorption spectroscopy measurements for δ<sup>2</sup>H and δ<sup>18</sup>O isotopic analysis

Cited by 120 publications

References 30 publications

Rainwater propagation through snowpack during rain-on-snow sprinkling experiments under different snow conditions

Rainwater propagation through snowpack during rain-on-snow sprinkling experiments under different snow conditions

Residence time, mineralization processes and groundwater origin within a carbonate coastal aquifer with a thick unsaturated zone

Tracer-based analysis of spatial and temporal variations of water sources in a glacierized catchment

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