Advantages of longer–term tracing -- three case studies from Slovenia

Kogovšek, Janja; Petrič, Metka

doi:10.1007/s00254-004-1135-8

Cited by 23 publications

(20 citation statements)

References 3 publications

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“…The third tracing of Tržiščica with 4.6 kg of uranine was carried out in April 2000 at medium to low recession conditions (Kogovšek & Petrič 2002, Kogovšek & Petrič 2004. The most rapid flow towards the Tominčev studenec (v dom =4.6 cm/s), and somewhat slower flow towards the Javornikov izvir and Debeljakov izvir were proved by the results.…”

Section: Previous Tracer Testsmentioning

confidence: 87%

Tracer Test on the Mala Gora Landfill near Ribnica in South-Eastern Slovenia

Kogovšek

Petrič

2006

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IzvlečekUDK 556.3:504.054(497.4-12) Janja Kogovšek & Metka Petrič: Sledilni poskus na odlagališču Mala gora pri Ribnici v jugovzhodni Sloveniji Odlagališče komunalnih odpadkov Mala gora pri Ribnici je eno izmed devetih trenutno še aktivnih odlagališč na slovenskem krasu. Skladno z zakonodajo je potrebno izvajati monitoring njegovega vpliva na podzemne vode, ki pa je lahko učinkovit le ob dobrem poznavanju značilnosti pretakanja podzemnih vod na območju odlagališča. Zato smo izvedli sledilni poskus, ki je pokazal, da je glavna smer odtekanja podzemne vode z območja Male gore proti izvirom Tominčev studenec, Javornikov izvir, Debeljakov izvir in Šica pri naselju Dvor v dolini Krke. V manjših koncentracijah se je uranin pojavil v Podpeški in Kompoljski jami, dokazano pa je bilo tudi sekundarno odtekanje proti Šici pri Mali Račni in izviroma reke Krke. Ob višjih vodostajih podzemne vode z območja odlagališča odtekajo tudi proti izviru Globočec, vendar pa se ta pomemben vir za vodooskrbo primarno napaja iz drugih delov kraškega vodonosnika. Pojavljanje sledila je vezano na ugodne hidrološke razmere in povečane koncentracije uranina so bile po močnejših padavinah zabeležene v vseh izvirih še eno leto po injiciranju. Zbrane ugotovitve smo upoštevali pri pripravi programa monitoringa. ključne besede: sledilni poskus, odlagališče odpadkov, Mala gora, Slovenija. The Mala gora landfill near Ribnica is one of the nine still active landfills on Slovene karst. According to our legislation the monitoring of its impact on groundwater have to be performed, but this can only be effective when the characteristics of the underground water flow in the area of the landfill are well known. Therefore a tracer test was carried out on the Mala gora landfill and the main underground water connections towards the Tominčev studenec, Javornikov izvir, Debeljakov izvir and Šica springs near the settlement Dvor in the Krka valley were proved. In lower concentrations the uranine was detected in the Podpeška jama and Kompoljska jama Caves, as well as in the Šica near Mala Račna spring and both springs of the Krka river. At high waters the flow from the landfill towards the Globočec spring was proved also, but this important source of water supply is primary recharged from other parts of the karst aquifer. The appearance of tracer is forwarded by favourable hydrological conditions and increased concentrations of uranine were measured at all springs after more intensive precipitation events even one year after the injection. Obtained results were considered in the preparation of the monitoring plan.

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Section: Previous Tracer Testsmentioning

confidence: 87%

Tracer Test on the Mala Gora Landfill near Ribnica in South-Eastern Slovenia

Kogovšek

Petrič

2006

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“…Since the Timavo [ Doctor and Alexander , 2005] provides a small discharge, compared to the one of the Isonzo, it is not considered in this numerical study. The small freshwater contribution of the rivers flowing into the GoT from the slovenian coast (Dragonja [ Mozetič et al , 2002] and Rižana [ Kogovšek and Petric , 2004] rivers) is neglected as well. Table 1 summarizes the annual average discharge rate of the four rivers mentioned above.…”

Section: Gulf Of Triestementioning

confidence: 99%

Numerical study of the role of wind forcing and freshwater buoyancy input on the circulation in a shallow embayment (Gulf of Trieste, Northern Adriatic Sea)

Querin¹,

Crise²,

Deponte³

et al. 2006

J. Geophys. Res.

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[1] This paper investigates the role of wind forcing and river discharge on a small-scale shallow embayment: the Gulf of Trieste. The qualitative and quantitative analysis of these dominant processes is carried out using a high resolution numerical model, initialized and forced with experimental data. The simulations are focused on short-term transient events, which occurred during the stratification season (spring and summer). Two significant case studies are analyzed in detail: a strong wind event during summer and a river flood during spring. The model output is also checked against the results of a nondimensional scale analysis and against buoy and satellite observed data. These comparisons show a good correlation, validating the numerical simulations for the two case studies. The model shows that strong wind events blowing on stably stratified water cause coastal upwelling and almost entirely mix the water column in a few hours. Strong wind-driven currents can flush the whole basin in almost 3 days. On the contrary, river floods affect mainly the upper layer, down to 5 m. The circulation is estuarine with a sharp vertical density gradient and horizontal fronts at the interface between plume freshwater and ambient salty water. Given the length scale of the basin, the effect of rotation is weak and a local coastal current in geostrophic balance is not formed during the simulated time period (20 days).Citation: Querin, S., A. Crise, D. Deponte, and C. Solidoro (2006), Numerical study of the role of wind forcing and freshwater buoyancy input on the circulation in a shallow embayment (Gulf of Trieste, Northern

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“…To define the springs in the area of influence of the landfill also the results of tracer tests (Jenko 1959, Habič 1989, Kogovšek 1999, Kogovšek & Petrič 2004 were considered besides basic geological and hydrogeological characteristics. The main direction of underground flow from the karst aquifer of Javorniki is towards the springs at the southern border of the Planinsko polje.…”

Section: Springs In the Area Of Influence Of The Landfillmentioning

confidence: 99%

“…Especially useful information for the preparation of the monitoring plan was gathered by the tracer test on Poček (Kogovšek 1999, Kogovšek & Petrič 2004. As the uranine was injected at the surface on the rock bottom of a smaller doline, it is easier to put the results in parallel with the conditions of leakage and groundwater flow of waste waters from the landfill.…”

Section: Geological and Hydrogeological Conditions In The Narrow Areamentioning

confidence: 99%

Hydrogeological research as a basis for the preparation of the plan of monitoring groundwater contamination: A Case Study of the Stara Vas Landfill near Postojna (SW Slovenia)

Petrič

Šebela

2016

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Metka Petrič & Stanka Šebela: Hydrogeological research as a basis for the preparation of the plan of monitoring groundwater contamination: A case study of the Stara vas landfill near Postojna (SW Slovenia)For the present 9 landfills on karst are still active in Slovenia, among them also the Stara vas landfill near Postojna. As strong fissuration of the rock base and very good permeability is typical for karst areas, the waste waters from the landfills particularly endanger the groundwater. The capacity of natural filtration in karst is very low and the dimension of possible negative impact is very high. The actual legislation regulates the performance of operational monitoring, a part of which is also the measurement of parameters of contamination of groundwater by hazardous substances, if they are in the area of influence of the landfill. Preparation of the monitoring plan is based on adequate hydrogeological researches. Besides basic geological and hydrogeological data also the results of tracer tests were used in the case study of the Stara vas landfill. Additionally, the detailed tectonic-lithological mapping in the scale 1:5000 was performed in the narrow area of the landfill. Based on defined characteristics of underground water flow and in accordance with the regulations 3 monitoring points inside (Malenščica and Vipava springs, Fužina cave) and one point outside the area of influence of the landfill (Matijeva jama cave) were selected. The monitoring plan for the observation of water quality and capacity was suggested. Metka Petrič & Stanka Šebela: Hidrogeološke raziskave kot osnova za izdelavo načrta monitoringa onesnaženosti podzemnih vod: primer odlagališča Stara vas pri Postojni (JZ Slovenija)V Sloveniji je na krasu trenutno aktivnih devet odlagališč komunalnih odpadkov, med drugimi tudi Stara vas pri Postojni. Ker je za kraška območja značilna močna razpokanost kamninske osnove in zelo dobra prepustnosti, izcedne vode z odlagališč še posebej ogrožajo podzemno vodo. Sposobnost naravne filtracije je v krasu majhna, obseg možnega negativnega vpliva pa zelo velik. Sedaj veljavna zakonodaja predpisuje obratovalni monitoring, del katerega je tudi merjenje parametrov onesnaženosti podzemnih vod z nevarnimi snovmi, če so v vplivnem območju odlagališča. Temelj za izdelavo načrta monitoringa so ustrezne hidrogeološke raziskave. Za primer Stare vasi smo poleg osnovnih geoloških in hidrogeoloških podatkov uporabili še rezultate sledilnih poskusov, ožje območje odlagališča pa smo podrobno tektonsko-litološko kartirali v merilu 1:5000. Na osnovi ugotovljenih značilnosti pretakanja vode v podzemlju in v skladu s predpisi smo določili 3 točke monitoringa znotraj (izvira Malenščica in Vipava, jama Fužina) in eno izven vplivnega območja odlagališča (Matijeva jama) ter določili način spremljanja kakovosti vode in izdatnosti.

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Advantages of longer–term tracing -- three case studies from Slovenia

Cited by 23 publications

References 3 publications

Tracer Test on the Mala Gora Landfill near Ribnica in South-Eastern Slovenia

Tracer Test on the Mala Gora Landfill near Ribnica in South-Eastern Slovenia

Numerical study of the role of wind forcing and freshwater buoyancy input on the circulation in a shallow embayment (Gulf of Trieste, Northern Adriatic Sea)

Hydrogeological research as a basis for the preparation of the plan of monitoring groundwater contamination: A Case Study of the Stara Vas Landfill near Postojna (SW Slovenia)

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