Dinàmica de la Terra i de l'Oceà: Enviaments recents
Ara mostrant els elements 361-380 de 1037
Fábricas magnéticas en el antepaís del orógeno Pirenaico, relación con los últimos estadios de deformación (cabalagamiento de San Felices, Sierras Exteriores Aragonesas)
Se ha analizado la fábrica magnética de los materiales sedimentarios depositados en ambientes continentales (Fms Campodarbe y Uncastillo) en el borde septentrional de la cuenca de antepaís del Ebro en dos sectores (Luesia ...
North Atlantic millennial-scale climate variability 910 to 790 ka and the role of the equatorial insolation forcing
The Mid-Pleistocene transition (MPT) was the time when quasi-periodic (not, vert, similar 100 kyr), high-amplitude glacial variability developed in the absence of any significant change in the character of orbital forcing, ...
First fossil record of the oribatid family Liacaridae (Acariformes: Gustavioidea) from the lower Albian amber-bearing site of Ariño (eastern Spain)
We describe the first beetle mite (Oribatida) found in the lower Albian (Lower Cretaceous) amber-bearing site of Ariño, located in the Teruel Province (eastern Iberian Peninsula). It represents the first fossil record of ...
Vanishing Clams on an iberian beach: local consequences and global implication of accelerating loss of shells to tourism
Multi-decadal increase in shell removal by tourists, a process that may accelerate degradation of natural habitats, was quantified via two series of monthly surveys, conducted thirty years apart (1978-1981 and 2008-2010) ...
Validating GIC modeling in the Spanish power grid by differential magnetometry
series of experiences and recommendations are presented concerning the derivation of geomagnetically induced currents (GIC) by use of the differential magnetometry method (DMM) under power lines. This indirect technique, ...
Long-term hydroclimate variability in the sub-tropical North Atlantic and anthropogenic impacts on lake ecosystems: A case study from Flores Island, the Azores
Human land use and climate change threaten ecosystems and natural resources, particularly on remote islands such as the Azores Archipelago in the North Atlantic. Since the official Portuguese settlement of the archipelago ...
Les excavacions paleontològiques en els jaciments de calcària litogràfica del Montsec (Noguera, Lleida)
Els jaciments de calcària litogràfica estan situats en el marge sud de la Serra del Montsec de Rúbies, en el terme municipal de Vilanova de Meià, concretament en la pedania de Santa Maria de Meià. Hi ha dos jaciments ...
Groundwater origin and recharge in the hyperarid Cordillera de la Costa, Atacama Desert, northern Chile.
The Cordillera de la Costa is located along the coastline of northern Chile, in the hyperarid Atacama Desert area. Chemical and isotopic analyses of several small coastal springs and groundwater reservoirs between 22.5°S ...
Corte compensado del Pirineo oriental: Geometría de las cuencas del antepaís y edades de emplazamiento de los mantos de corrimiento
El manto del Pedraforca se ha dividido en dos unidades: el manto superior del Pedraforca predominantemente constituido por materiales del Cretftcico inferior y el manto inferior del Pedraforca formado principalmente por ...
Transport and accumulation of floating marine litter in the Black Sea: insights from numerical modeling
Floating marine litter (FML) is a global problem with significant risks to marine life and human health. In semi-enclosed basins like the Black Sea, slow water replenishment and strong input from European rivers create ...
Caracterización sísmica de una cuenca sedimentaria: análisis inicial
Mediante técnicas numéricas analizamos el efecto de una cuenca sedimentaria sobre las ondas sísmicas que la atraviesan, en el presente estudio ondas P. La cuenca sedimentaria la caracterizamos por una serie estratigráfica ...
Caída de bloques de hielo en los frentes del glaciar de casquete de la Isla Livingston (Archipiélago de la Shetland del Sur). Detección por métodos sísmicos. Influencia de las variables ambientales.
Se han utilizado los datos procedentes de una red (array) sísmica situada en la isla Livingston para estudiar la evolución de las caídas de bloques de hielo en los frentes de los glaciares (calving). Pa rtiendo de que la ...
Grosor de la corteza oceánica en dorsales de expansión y alrededores en el Paso del Drake (Antártida) a partir de inversión numérica de datos gravimétricos
The high density of geophysical data (gravity, bathymetry...) collected in the ANTPAC 97/98 cruise by the Spanish BIO Hespérides allows us to obtain the crustal thickness of the areas near the intersection of the Shackleton ...
'Anomalous' magnetic fabrics of dikes in the stable single domain/superparamagnetic threshold
'Anomalous' magnetic fabrics in dikes that appear to indicate flowinto thewall confound many workers. Here, we present extensivemagnetic data on five dikes from Tenerife, Canary Islands, and use these to interpret the ...
Groundwater discharge as a driver of methane emissions from Arctic lakes
Lateral CH4 inputs to Arctic lakes through groundwater discharge could be substantial and constitute an important pathway that links CH4 production in thawing permafrost to atmospheric emissions via lakes. Yet, groundwater ...
Potentially pathogenic bacteria in the plastisphere from water, sediments and commercial fish in a tropical coastal lagoon: an assessment and management proposal
Microplastics in aquatic ecosystems harbor numerous microorganisms, including pathogenic species. The ingestion of these microplastics by commercial fish poses a threat to the ecosystem and human livelihood. Coastal lagoons ...
Anthropogenic activity and millennial climate variability affect Holocene mercury deposition of an alpine wetland near the largest mercury mine in China
Mercury (Hg) is a volatile heavy metal that can be transported globally through the atmosphere and has a significant harmful impact on terrestrial and aquatic ecosystems. Mining is one of the most important anthropogenic ...
The fossil crown wasp Electrostephanus petiolatus Brues in Baltic Amber (Hymenoptera, Stephanidae): designation of a neotype, revised classification,and a key to amber Stephanidae.
The fossil crown wasp Electrostephanus petiolatus Brues comb. rev.(Stephanidae, Electrostephaninae) is re-described from a single male preserved in middle Eocene Baltic Amber. The holotype was lost or destroyed around the ...
El Miocè inferior de la conca del Vallès-Penedès: un registre excepcional dels canvis climàtics i faunístics.
Les intervencions paleontològiques recents han mostrat que el registre de vertebrats continentals del Miocè inferior de la conca del Vallès-Penedès és molt més ric i continu del que es pensava. Avui dia es coneixen una ...
Caracterización paleoclimática de la serie margosa Langhiense de Can Rosell (Barcelona)
La serie de Can Rosell se localiza en la cuenca del Penedés (provincia de Barcelona). Esta serie está formada por una sucesión de margas grises con pequeñas intercalaciones de areniscas que pasan hacia el techo a una ...
