Search results for "Lluvia"
showing 10 items of 49 documents
Structure and evolution of a Messinian mixed carbonate-siliciclastic platform: the role of evaporites (Sorbas Basin, South-east Spain).
2010
36 pages; International audience; The Sorbas Member is a late Messinian complex sedimentary systemthat formed immediately following deposition of the Messinian evaporites in the Sorbas Basin (South-east Spain). This work describes the sequence architecture and facies organization of a continuous kilometre long, alluvial fan to open platform transect near the village of Cariatiz in the north-east of the basin. The postevaporitic Cariatiz platform was a mixed carbonate-siliciclastic system composed of four intermediate-frequency, fifth-order depositional sequences (Depositional Sequences 1 to 4) arranged in an overall prograding trend. The intense fracturing and brecciation of these deposits …
Discovery of an Autunian macroflora and lithostratigraphic re-investigation on the western border of the Lodève Permian basin (Mont Sénégra, Hérault,…
2013
11 pages; International audience; Re-investigation of the western edge of the Lodève basin allows reassignment of one sandstone-conglomerate formation previously identified as "terminal Stephanian" to Early Autunian. The existence of two unconformable (Stephanian and Autunian) megasequences, separated by a sedimentary gap, which had been rejected, is thus re-affirmed. The authors also found, less than 20 m above the basal Autunian conglomerate, a macroflora with taxa characteristic of the famous Tuilières flora from a site, located in the eastern part of the basin near Lodève, in the Grey Autunian group. This confirms that the new Mont Sénégra fossiliferous beds belong to the Lower Autunian…
Landscape reconstruction and major flood events of the River Main (Hesse, Germany) in the environs of the Roman fort at Groβkrotzenburg
2020
Abstract Detailed geoarchaeological studies were conducted at the Groβkrotzenburg floodplain (Southern Hesse, Germany) in order to reconstruct the fluvial palaeogeography and search for Roman harbour installations. Another objective was to reconstruct the local flood history based on stratigraphic and geochronological data. Prospection based on electrical resistivity tomography, vibracoring and direct push electrical conductivity logging were carried out to detect and analyze subsurface stratigraphies. Altogether, 6 sediment cores, up to 7 m long, were drilled along transects along and perpendicular to the present course of the River Main. Based on sedimentological and geochemical data, we …
Diplurans of subsurface terrestrial habitats in the Iberian Peninsula, with a new species description (Diplura: Campodeidae)
2017
Although Iberian subsurface terrestrial habitats have been sampled for a half century, they remain poorly known. During the last five years much more sampling of these subsurface habitats has been made, mainly in scree slopes (also called colluvial Mesovoid Shallow Substratum habitats, MSS) but also in alluvial debris of temporal watercourses (alluvial MSS). In our study, diplurans, a basal hexapod group, were extracted from two hundred traps installed in 69 locations in the mountain ranges of six different regions of the Iberian Peninsula, from north to south: Cantabrian, Pyrenees, Iberic System, Central System, Prebaetic and Penibaetic Mountains. A total of 1251 specimens in fifteen diplu…
Early response ofQuercus roburseedlings to soil compaction following germination
2018
Logging operations using heavy machinery effect changes in soil characteristics due to compaction; such conditions can negatively influence seedling development. In stands managed on the basis of close-to-nature silviculture or continuous cover forestry, successful establishment of natural regeneration after logging is important to ensure the proper functioning of a forest ecosystem, to promote soil recovery, and to prevent and mitigate land degradation processes (such as soil erosion, mudflow, waterlogging, and landslides) related to soil compaction and rutting. This work aimed to assess the early response of Quercus robur seedlings to soil compaction during the first 1.5 months after germ…
Evolución temporal de las intensidades máximas de lluvia entre 1989 y 2007 según la escala de observación
2010
La estructura de la precipitación presenta características diferentes en función de la escala temporal en que se realizan las observaciones, de manera que cuanto más se reduce el intervalo de observación, mayores son los valores de intensidad que se alcanzan. Ahora bien, se desconoce cuál es la evolución temporal de los valores extremos de intensidad para cada intervalo de observación. En este sentido y en relación con las tendencias recientes de cambio climático, este trabajo analiza la evolución, desde 1989 a 2007, del comportamiento de las intensidades máximas observadas en distintos intervalos temporales, entre los 5 minutos y las 24 horas. El estudio cubre el territorio de la Confedera…
Criterios de selección y caracterización de episodios de lluvia. Aplicación a la Confederación Hidrográfica del Júcar (1989-2003)
2006
El análisis espacio-temporal de la lluvia precisa de la identificación de episodios, en función del objetivo de la investigación y la escala de trabajo. En esta comunicación se proponen criterios de selección de episodios, con objetivos hidrológicos, y se aplican al territorio de la Confederación Hidrográfica del Júcar, en base a los datos diarios de 15 años (1989-2003), proporcionados por el Sistema Automático de Información Hidrológica. Se seleccionan 363 episodios y se caracterizan en base a indicadores de total, duración, intensidad e irregularidad, calculados en once unidades territoriales. El análisis de estos indicadores evidencia una dicotomía litoral-interior. El ámbito litoral (ex…
La muntanya de L'Aixavegó: Un caso histórico de deslizamiento de grandes proporciones en la Ribera
1981
Primera novela: Primera historia de amor
1949
Primera historia de amor
1949
Texto recogido en un manuscrito de lo que iba a ser la primera novela de José Vidal-Beneyto, que no llegó a publicarse.