Hydrogeochemistry of Alpine springs from North Slovenia: Insights from stable isotopes

Kanduč, Tjaša; Mori, Nataša; Kocman, David; Stibilj, Vekoslava; Grassa, Fausto

doi:10.1016/j.chemgeo.2012.01.012

Cited by 60 publications

(58 citation statements)

References 38 publications

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“…The data constitute an important input into isotope investigations and were used in evaluations of GNIP data (e. g. rozanskI et al, 1993;IchIyanagI, 2007;hughes & crawford, 2012), and in many hydrological and hydrogeological investigations (e. g. krajcar BronI] et al., 1998;PezdI^, 1999PezdI^, , 2003Bren^I^ & Vre^a, 2006;Vre^a et al, 2006Vre^a et al, , 2008ogrInc et al, 2008;VodIla et al, 2011;kandu^ et al, 2012;zaVadlaV et al, 2012;cerar & urBanc, 2013;MarkoVI] et al, 2013;Mezga et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Isotopic composition of precipitation at the station Ljubljana (Reaktor), Slovenia – period 2007–2010

Vreča¹,

Bronić²,

Leis³

et al. 2014

Geologija

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The stable isotopic composition of hydrogen and oxygen (δ O + (9,76 ± 1,93). Nakloni izra~unanih premic so si med seboj podobni, kar nakazuje, da je porazdelitev padavin relativno homogena in da je {tevilo mese~nih vrednosti z nizkim devterijevim presežkom majhno. Srednja tehtana vrednost devterijevega presežka zna{a 10,3 ‰ in nakazuje prevladujo~i vpliv zra~nih mas iz Atlantika.Temperaturni koeficient za δ 18 O pa zna{a 0,30 ‰/°C. Tudi podatki o aktivnosti tricija v mese~nih padavinah kažejo sezonske spremembe. Srednja tehtana vrednost zna{a 8,5 TU in ne nakazuje padajo~ega trenda.

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Section: Introductionmentioning

confidence: 99%

Isotopic composition of precipitation at the station Ljubljana (Reaktor), Slovenia – period 2007–2010

Vreča¹,

Bronić²,

Leis³

et al. 2014

Geologija

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“…A combination of hydrochemical tracers and stable isotopes approaches can provide insight into hydrological processes, including apportionment between water sources (including groundwater contribution), and their contribution to lake water balances [16][17][18][19][20][21][22]. In particular, the increase in the values of stable isotopes in water (δ 2 H and δ 18 O) with the increasing extent of evaporative losses [23] can be incorporated into isotope-mass balance determinations to quantify water balances [24].…”

Section: Introductionmentioning

confidence: 99%

Understanding the Role of Groundwater in a Remote Transboundary Lake (Hulun Lake, China)

Gao

Ryan

et al. 2017

Water

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Hulun Lake, located in a remote, semi-arid area in the northeast part of Inner Mongolia, China, shares a transboundary basin with Mongolia and supports a unique wetland ecosystem that includes many endangered species. Decadal scale decreases in the lake stage and increased salinity make an understanding of the lake's water and salt sources critical for appropriate design of strategies to protect and manage the lake. Multiple tracers (chloride, and δ 18 O and δ 2 H in water) in samples collected from lake water, rivers, and nearby water wells were used in conjunction with an annual water balance based on historic data to better understand the lake's major water and salt sources. The average annual water balance was conducted for two time periods : 1981-2000 and 2001-2013. The contribution of river discharge to the annual lake input decreased by half (from 64% to 31%) between the two time periods, while the volumetric contribution of groundwater discharge increased four-fold (from about 11% to about 50% of the total lake input). Significant evaporation was apparent in the stable isotope composition of the present-day lake water, however, evaporation alone could not account for the high lake water chloride concentrations. Limited domestic well water sampling, a regional salinity survey, and saline soils suggest that high chloride groundwater concentrations exist in the region south of the lake. The chloride mass balance suggested that groundwater currently contributes more than 90% of the annual chloride loading to the lake, which is likely four times greater than the earlier period (1981)(1982)(1983)(1984)(1985)(1986)(1987)(1988)(1989)(1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000) with lower groundwater input. The use of water and chloride mass balances combined with water isotope analyses could be applied to other watersheds where hydrologic information is scarce.

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“…Open-system equilibration of DIC with CO 2 enriches DIC in 13 C by about 9 ‰ (Mook et al, 1974), which corresponds to the value of -17.6 ‰ shown in Figure 4. Non-equilibrium dissolution of carbonates, with one part of DIC originating from soil CO 2 (-26.6 ‰), and the other from carbonates with an average δ 13 C Ca of +2.4 ‰, leads to an intermediate δ 13 C DIC value of -12.1 ‰ (Kanduč et al, 2012). Given the isotopic composition of atmospheric CO 2 (-7.8 ‰, LeVin et al, 1987) and the equilibrium fractionation with δ 13 C DIC of +9 ‰, DIC in equilibrium with the atmosphere should have a δ 13 C DIC of about +1 ‰ (Fig.…”

Section: General Geochemical Characteristics Of River Watermentioning

confidence: 99%

Hydrogeochemical and isotopic characterization of Pesnica River, Slovenia

Kanduč¹,

Samardžija²,

Mori³

et al. 2016

Geologija

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The surface water geochemistry and carbon cycling studied here depend mainly on geological composition of the river catchment. The investigated surface waters in the river Pesnica catchment that are heavily hydromorphologicaly altered (reservoirs, channelization, land melioration systems) represent waters influenced by chemical weathering of carbonates and of mostly clastic rocks (claystone, sandstones, marlstones and siltstones). The objectives of our study were to analyze hydrogeochemical and isotopic composition of dissolved (δ 13 C DIC ) and particulate carbon (δ 13 C POC ) with characterization of suspended matter and evaluate biogeochemical processes in Pesnica River in Slovenia before and after the retention. Surface waters are generally close to saturation regarding calcite and dolomite, dissolved CO 2 is 49 to 1000 times oversaturated relative to atmosphere. δ 13 C DIC was in the range from -14.8 to -4.2 ‰ and shows following biogeochemical processes in river system: degradation of organic matter, dissolution of carbonates and biological activity, which was confirmed with SEM microscopy and EDXS microanalysis. Results of SEM/EDXS showed that suspended matter is composed of K, Mg and Ca from locations Pesnica 1 and Pesnica 2 (above retention Perniško lake). Sample from Pesnica 3 (below retention) shows higher biological activity, while sample from Pesnica 4 (tributary of Pesnica, drainage channel Biš) contains a lot of particles of microporous structure and fiber structure, which are probably of anthropogenic origin. δ 13 C POC is changing from -29.5 to-27.6‰ and showed different stages of degraded terrestrial material. More negative δ 13 C POC are shown at location at drainage channel Biš and show higher terrestrial input in river system as locations 1, 2 and 3 Pesnica, which have higher δ 13 C POC values. This first results about suspended matter in Pesnica watershed serve for evaluation of anthropogenic influences specially in relation with further influences and longer time planning of sustainable river water management. IzvlečekGeokemija površinskih voda in kroženje ogljika v naši študiji v glavnem zavisita od geološke podlage v porečju. Raziskane površinske vode v porečju Pesnice, ki je hidromorfološko močno preoblikovano (vodni zadrževalniki, urejanje struge, melioracije), predstavljajo vode, na katere vpliva kemijsko preperevanje karbonatov in v glavnem klastičnih kamnin (glinavcev, peščenjakov, laporovcev in meljevcev). Namen naše raziskave je bil analizirati hidrogeokemično in izotopsko sestavo raztopljenega in partikulatnega ogljika skupaj s karakterizacijo suspendirane snovi in oceno biogeokemijskih procesov v porečju Pesnice v Sloveniji pred zadrževalnikom in za njim. Površinske vode so večinoma blizu nasičenja glede na kalcit in dolomit, raztopljen CO 2 je od 49 do 1000 krat prenasičen relativno na atmosfero. δ 13 C DIC je bil v razponu od -14.8 do -4.2 ‰ in kaže na sledeče biogeokemijske procese v rečnem sistemu: razgradnja organske snovi, raztapljanje karbonatov in biološka aktivn...

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Hydrogeochemistry of Alpine springs from North Slovenia: Insights from stable isotopes

Cited by 60 publications

References 38 publications

Isotopic composition of precipitation at the station Ljubljana (Reaktor), Slovenia – period 2007–2010

Isotopic composition of precipitation at the station Ljubljana (Reaktor), Slovenia – period 2007–2010

Understanding the Role of Groundwater in a Remote Transboundary Lake (Hulun Lake, China)

Hydrogeochemical and isotopic characterization of Pesnica River, Slovenia

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