Papers

@article{juncosa_hydrochemical_2024,

title = {Hydrochemical stratigraphic analysis of the filling of the Meirama open pit mine II: parameters and elements},

author = {Ricardo Juncosa-Rivera and Jordi Delgado-Martín and José Luis Cereijo-Arango},

url = {https://doi.org/10.1007/s12665-024-11972-w},

doi = {10.1007/s12665-024-11972-w},

issn = {1866-6299},

year  = {2024},

date = {2024-11-01},

urldate = {2026-04-20},

journal = {Environmental Earth Sciences},

volume = {83},

number = {23},

pages = {648},

abstract = {In the first article, entitled “Hydrochemical stratigraphic analysis of the filling of the Meirama open pit mine I: Monitoring and filling” (Juncosa et al. Environ Sci Pollut Res 20(11):7520–7533, 2013), the filling process of the old Meirama mining pit (NW Spain), as well as the methodology used in the sample collection and analysis, was described. Likewise, the evolution of the temperature, pH, dissolved oxygen, iron, and manganese in the filling and postfilling processes are shown. This second article presents the temporal evolution of other major components and nutrients during the filling period (2008–2016) and postfilling period (2016–2019). The continuation of the analysis initiated in the aforementioned article is done at certain heights of the vertical profiles monitored at the midpoint of the lake (the surface, the first 2 m of depth with respect to the surface (2 mbs), at 59 masl, and at the bottom (2 masl)). As explained in the filling process, an invariant chemocline and a seasonal thermocline near the water surface are formed. Therefore, the analysis encompasses not only the bottom and surface of the lake but also includes an intermediate point where the chemocline is found. Based on the analysis carried out, it has been possible to verify that the most superficial waters (80 m) are in line with the geological and fluvial environment of the basin, so that the stored waters do not need a special physicochemical treatment. However, at deeper levels, anoxization processes are developing, a step prior to the methanization of the lake bottom.},

keywords = {Chemocline, Hydrochemical, Open-pit mine, Thermocline},

pubstate = {published},

tppubtype = {article}

}

@article{juncosa_hydrochemical_2024b,

title = {Hydrochemical stratigraphic analysis of the filling of the Meirama open pit mine II: parameters and elements},

author = {Ricardo Juncosa-Rivera and Jordi Delgado-Martín and José Luis Cereijo-Arango},

url = {https://doi.org/10.1007/s12665-024-11972-w},

doi = {10.1007/s12665-024-11972-w},

issn = {1866-6299},

year  = {2024},

date = {2024-11-01},

urldate = {2026-07-28},

journal = {Environmental Earth Sciences},

volume = {83},

number = {23},

pages = {648},

abstract = {In the first article, entitled “Hydrochemical stratigraphic analysis of the filling of the Meirama open pit mine I: Monitoring and filling” (Juncosa et al. Environ Sci Pollut Res 20(11):7520–7533, 2013), the filling process of the old Meirama mining pit (NW Spain), as well as the methodology used in the sample collection and analysis, was described. Likewise, the evolution of the temperature, pH, dissolved oxygen, iron, and manganese in the filling and postfilling processes are shown. This second article presents the temporal evolution of other major components and nutrients during the filling period (2008–2016) and postfilling period (2016–2019). The continuation of the analysis initiated in the aforementioned article is done at certain heights of the vertical profiles monitored at the midpoint of the lake (the surface, the first 2 m of depth with respect to the surface (2 mbs), at 59 masl, and at the bottom (2 masl)). As explained in the filling process, an invariant chemocline and a seasonal thermocline near the water surface are formed. Therefore, the analysis encompasses not only the bottom and surface of the lake but also includes an intermediate point where the chemocline is found. Based on the analysis carried out, it has been possible to verify that the most superficial waters (80 m) are in line with the geological and fluvial environment of the basin, so that the stored waters do not need a special physicochemical treatment. However, at deeper levels, anoxization processes are developing, a step prior to the methanization of the lake bottom.},

keywords = {Chemocline, Hydrochemical, Open-pit mine, Thermocline},

pubstate = {published},

tppubtype = {article}

}

@article{juncosa_thermo-hydrochemical_2024,

title = {Thermo-hydrochemical modelling of vertical profiles of the formed Meirama Lake (NW Spain)},

author = {Ricardo Juncosa-Rivera and Jordi Delgado-Martín and José Luis Cereijo-Arango and Pablo Rodríguez-Vellando-Fernández-Carvajal},

url = {https://doi.org/10.1007/s40899-024-01153-9},

doi = {10.1007/s40899-024-01153-9},

issn = {2363-5045},

year  = {2024},

date = {2024-09-01},

urldate = {2024-09-01},

journal = {Sustainable Water Resources Management},

volume = {10},

number = {5},

pages = {172},

abstract = {The use of modelling techniques for the study and thermohydrochemical characterisation of lakes is conditioned by the availability of data with which to validate the model created. There are not many validated numerical models that reproduce the physico-chemical behaviour of a lake. During the period March 2008–October 2019 we have been monitoring the filling and post-filling process of an old open-pit, forming the Meirama lake in NW Spain. With the data measured during these years we have had the opportunity to develop a model of the thermo-hydrochemical behaviour of the vertical profile of the lake. Thus, this article presents a vertical profile numerical model of the thermal behaviour and transport of sulfate of the lake under the current conditions of steady-state hydrodynamic operation, when the complete flooding of the mine pit was reached (May 2016–October 2019). The model developed has been a conservative diffusive transport model and a thermal conductive transport model. The developed model reproduces acceptably the vertical profiles of the analysed parameters. In these profiles, it can be seen that the chemocline originating from the filling process diffuses slowly. There are two differentiated water bodies separated by a chemocline. The model also reproduces the seasonal evolution of the temperature profile in the shallowest zone of the lake; i.e., there is a significant thermocline in the upper zone that tends to disappear during the winter season: it tends to homogenize at a temperature between 11 and 12 °C, tending to a vertical profile.},

keywords = {Chemocline, Mine lake, numerical modelling, Thermocline, Water quality},

pubstate = {published},

tppubtype = {article}

}

@article{juncosa_hydrochemical_2019,

title = {Hydrochemical Evolution of the filling of the Mining Lake of As Pontes (Spain)},

author = {Ricardo Juncosa-Rivera and Jordi Delgado-Martín and José Luis Cereijo-Arango and Andrea Muñoz-Ibáñez},

url = {https://doi.org/10.1007/s10230-019-00612-6},

doi = {10.1007/s10230-019-00612-6},

issn = {1616-1068},

year  = {2019},

date = {2019-09-01},

urldate = {2026-08-05},

journal = {Mine Water and the Environment},

volume = {38},

number = {3},

pages = {556–565},

abstract = {The old As Pontes lignite mine is located in northwest Spain, in the Galicia region. Filling of the 547 hm3 pit began at the end of January 2008 through the controlled input of surface water. The filling was completed on April 18, 2012, leading to a steady water regime. During this process, both the water input and the water stored in the pit were hydrochemically monitored. The water chemistry in the superficial area of the lake, as well as the chemical stratification, are presented.},

keywords = {Chemocline, Hydrology, Mining restoration, Water quality},

pubstate = {published},

tppubtype = {article}

}