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Sediment instability on the Portuguese continental margin under abrupt glacial climate changes (last 60 kyr)

Martín Lebreiro, Susana; Voelker, A. H. L.; Vizcaino, A.; Abrantes, Fátima G.; Alt-Epping, Ulrich; Jung, S.; Thouveny, Nicolas; Gràcia i Mont, Eulàlia (Elsevier, 2009)

It is well established that orbital scale sea-level changes generated larger transport of sediments into the deep-sea during the last glacial maximum than the Holocene. However, the response of sedimentary processes to ...
The impact of hydrological conditions on salinisation and nitrate concentration in the coastal Velez River aquifer (southern Spain)

Lentini, Azzurra; Kohfahl, Claus Reimer; Benavente Herrera, José; García Aróstegui, José Luis; Vadillo, Iñaki; Meyer, Hanno; Pekdeger, Asaf (Springer, 2009-01-10)

This study reports the impact of hydrological conditions on salinisation and nitrate concentrations of a coastal aquifer located at the Mediterranean Sea, southern Spain. Eighty-two samples of ground- and surface water ...
Late Holocene climate variability in the southwestern Mediterranean region: an integrated marine and terrestrial geochemical approach

Martín-Puertas, Celia; Jimenez-Espejo, Francisco J.; Martínez-Ruiz, Francisca; Nieto-Moreno, Vanesa; Rodrigo, Marta; Mata Campo, Maria Pilar; Valero-Garcés, Blas (European Geosciences Union, 2010)

A combination of marine (Alboran Sea cores, ODP 976 and TTR 300 G) and terrestrial (Zo˜nar Lake, Andalucia, Spain) geochemical proxies provides a high resolution reconstruction of climate variability and human influence ...
Isotopic composition (delta18O and deltaD) of precipitation and groundwater in a semi-arid, mountainous area (Guadiana Menor basin, Southeast Spain)

Fernández Chacón, Francisca; Benavente Herrera, José; Rubio Campos, Juan Carlos; Kohfahl, Claus Reimer; Jiménez, J.; Meyer, Hanno; Hubberten, Hans Wolfgang; Pekdeger, Asaf (John Wiley & Sons, 2010-02-17)

We characterize the precipitation and groundwater in a mountainous (peaks slightly above 3000 m a.s.l.), semi-arid river basin in SE Spain in terms of the isotopes 18O and 2H. This basin, with an extension of about 7000 ...
The impact of cemented layers and hardpans on oxygen diffusivity in mining waste heaps: a ﬁeld study of the Halsbrücke lead–zinc mine tailings (Germany)

Kohfahl, Claus Reimer; Graupner, Torsten; Fetzer, Christian; Pekdeger, Asaf (Elsevier, 2010-11-01)

This article reports ﬁbre-optic oxygen measurements on a reactive mine waste heap located in the polymetallic sulphide mine district of Freiberg in south-eastern Germany. The heaped material consists of sulphide-bearing ...
The impact of hardpans and cemented layers on oxygen diffusivity in mining waste heaps: diffusion experiments and modelling studies

Kohfahl, Claus Reimer; Graupner, Torsten; Fetzer, Christian; Holzbecher, Ekkehard; Pekdeger, Asaf (Elsevier, 2011)

This study reports column tests and modelling results to assess the impact of hardpands and cemented layers on oxygen supply in mine waste sediments. The analysed sediment samples were obtained from a low-sulphide and ...
Groundwater recharge areas of a volcanic aquifer system inferred from hydraulic, hydrogeochemical and stable isotope data: Mount Vulture, southern Italy

Parisi, Serena; Paternoster, Michele; Kohfahl, Claus Reimer; Pekdeger, Asaf; Hubberten, Hans Wolfgang; Spilotro, Giuseppe; Mongelli, Giovanni; Meyer, Hanno (Springer, 2011)

Environmental isotope techniques, hydrogeochemical analysis and hydraulic data are employed to identify the main recharge areas of the Mt. Vulture hydrogeological basin, one of the most important aquifers of southern Italy. ...
Changes in water level, land use and hydrological budget in a semi-permanent playa lake, Southwest Spain

Rodríguez Rodríguez, Miguel; Green, Andy J.; López, R.; Martos Rosillo, Sergio (Springer, 2011-04-04)

Medina playa lake, a Ramsar site in western Andalusia, is a brackish lowland lake of 120 ha with an average depth of 1 m. Water flows into Medina from its 1,748-ha watershed, but the hydrology of the lake has not previously ...
Investigating the redox sensitivity of para-toluenesulfonamide (p-TSA) in groundwater

Meffe, Raffaella; Massmann, Gudrun; Kohfahl, Claus Reimer; Taute, Thomas; Richter, Doreen; Dünnbier, Uwe; Pekdeger, Asaf (Springer, 2011-05-28)

The groundwater downstream of a former sewage irrigation farm in Berlin is contaminated with ammonium (NH4+) and para-toluenesulfonamide (p-TSA), besides other anthropogenic pollutants. In the field, in situ removal of ...
Geochemistry and mineralogy of surface pyritic tailings impoundments at two mining sites of the Iberian Pyrite Belt (SW Spain)

Arranz González, Julio César; Cala Rivero, Victoria; Iribarren Campaña, Inés (Springer, 2011-06-03)

Two pyritic tailings impoundments located in two mining areas of the Iberian Pyrite Belt (Cueva de la Mora and Minas de Rı´otinto-Zarandas) were selected to asses their potential environmental impact. Mineralogical (XRD ...
Use of Bayesian belief networks for dealing with ambiguity in integrated groundwater management

Henriksen, Hans Jørgen; Zorrilla Miras, Pedro; Hera Portillo, África de la; Brugnach, Marcella (Society of Environmental Toxicology and Chemistry Press, Wiley, 2011-06-23)

In integrated groundwater management, different knowledge frames and uncertainties need to be communicated and handled explicitly. This is necessary in order to select efficient adaptive groundwater management strategies. ...
Freeze–thaw cycles and rainfall as triggering factors of mass movements in a warm Mediterranean region: the case of the Tramuntana Range (Majorca, Spain)

Mateos Ruiz, Rosa María; García Moreno, Inmaculada; Azañón, José Miguel (Springer, 2011-08-20)

Between 2008 and 2010, the island of Majorca (Spain) experienced the coldest and wettest winters of the last 40 years. Accumulated rainfall was twice the average and values of intense rainfall up to 296 mm/24h were recorded, ...
Interaction of two successive Alpine deformation fronts: constraints from low-temperature thermochronology and structural mapping (NW Iberian Peninsula)

Martín González, Fidel; Barbero, Luis; Capote del Villar, Ramón; Heredia Carballo, Nemesio; Gallastegui Suárez, Gloria (Springer, 2011-09-16)

The lateral termination of the Alpine-Pyrenean Orogen relief onshore is located in the NW Iberian Peninsula. It overlies a Variscan basement (Iberian Massif), where the sedimentary record of the Alpine tectonic is very ...
VARBOOT: a spatial bootstrap program for semivariogram uncertainty assessment

Pardo Iguzquiza, Eulogio; Olea, Ricardo E. (Elsevier, 2011-09-29)

In applied geostatistics, the semivariogram is commonly estimated from experimental data, producing an empirical semivariogram for a specified number of discrete lags. In a second stage, a model defined by a few parameters ...
Stochastic simulation of karst conduit networks

Pardo Iguzquiza, Eulogio; Dowd, Peter A.; Chaoshui, Xu; Durán Valsero, Juan José (Elsevier, 2011-10-10)

Karst aquifers have very high spatial heterogeneity. Essentially, they comprise a system of pipes (i.e., thenetwork of conduits) superimposed on rock porosity and on a network of stratigraphic surfaces and frac-tures. This ...
Deep resistivity cross section of the intraplate Atlas Mountains (NW Africa): new evidence of anomalous mantle and related Quaternary volcanism

Anahnah, Farida; Galindo Zaldívar, Jesús; Chalouan, Ahmed; Pedrera Parias, Antonio; Ruano, Patricia; Pous, Jaume; Heise, Wiebke; Ruiz Constán, Ana; Benmakhlouf, Mohamed; López Garrido, Ángel Carlos; Ahmamou, M’Fedal; Sanz de Galdeano, Carlos; Arzate Flores, Jorge; Ibarra Torre, Pedro; González Castillo, Lourdes; Bouregba, Naoua; Corbo, Fernando; Asensio, Eva (American Geophysical Union, 2011-10-15)

The Atlas Mountains are characterized by high elevations and Quaternary volcanism. Long period magnetotelluric data acquired along a NNW‐SSE transect reveal the presence of a conductive anomalous mantle below the High ...
Microbial activity and biogeochemical cycling in a nutrient-rich meromictic acid pit lake

Wendt Potthoff, Katrin; Koschorreck, Matthias; Díez Ercilla, Marta; Sánchez España, Francisco Javier (Elsevier, 2011-10-24)

Microbial activity, abundance and biomass, and biogeochemical cycling of iron, sulphur and carbon were studied in the extremely acidic (pH 2.5–4.3), meromictic, nutrient-rich pit lake Cueva de la Mora in Spain. The goal ...
The fracture system and the melt emplacement beneath the Deception Island active volcano, South Shetland Islands, Antarctica

Pedrera Parias, Antonio; Ruiz Constán, Ana; Heredia Carballo, Nemesio; Galindo Zaldívar, Jesús; Bohoyo Muñoz, Fernando; Marín Lechado, Carlos; Ruano, Patricia; Somoza Losada, Luis (Antarctic Science, Cambridge University Press, 2011-10-28)

A new magnetotelluric (MT) survey, along with new topographic parametric sonar (TOPAS) profiles and geological field observations, were carried out on the Deception Island active volcano. 3-D resistivity models reveal an ...
Mélanges and olistostromes in the Puerto Plata area (northern Dominican Republic) as a record of subduction and collisional processes between the Caribbean and North-American plates

Hernaiz Huerta, Pedro Pablo; Pérez Valera, Fernando; Abad, Manuel; Monthel, J.; Díaz de Neira Sánchez, José Alberto (Elsevier, 2011-11-07)

The Cordillera Septentrional records the oblique subduction and collisional processes between the Caribbean and North American plates during Late Cretaceous to early Palaeogene times. The Puerto Plata basement complex of ...
The basement of the Andean Frontal Cordillera in the Cordón del Plata (Mendoza, Argentina): geodynamic evolution

Heredia Carballo, Nemesio; Farias, Pedro; García-Sansegundo, Joaquín; Giambiagi, Laura (Servicio Nacional de Geología y Minería, 2011-11-08)

The Andean Paleozoic basement of the Cordón del Plata (Argentina) consists of two sets of rocks showing different stratigraphy, structure and metamorphism. The lower one is represented by the pre-Carboniferous (Devonian?) ...

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