Facultat de Ciències de la Terra: Recent submissions
Now showing items 21-40 of 41
Active tectonics in Northern Africa: The Nubia-Eurasia boundary in Tunisia
This PhD thesis presents a geological and geophysical study that characterizes the Quaternary stratigraphy, geomorphology, recent tectonics, and discusses their implications to understand the geodynamic evolution of North ...
Inversion of multichannel seismic data by combination of travel-time and full-waveform tomography
This thesis presents the implementation and application of a procedure combining different geophysical techniques to extract high-resolution information that helps characterizing the structure and properties (p-wave velocity, ...
Effects of CO2 and long day length on primary productivity in the Arctic Ocean: a perspective on climate change = Efectos del CO2 y largos fotoperiodos en la productividad primaria del Océano Ártico: una perspectiva sobre el cambio climático
Climate change, caused by anthropogenic emissions of carbon dioxide (CO2) and other greenhouse gasses into the atmosphere, is producing profound impacts on ecosystems. The Arctic Ocean is one of the most vulnerable regions ...
Origen de la estructura de la caldera Cañas Dulces y su relación con el recurso geotérmico de alta entalpía
El ambiente geotectónico en que se ubica Costa Rica, ha permitido el desarrollo de un arco volcánico activo, contexto geológico que favorece la formación de sistemas hidrotermales con potencial geotérmico; fuente de energía ...
Geophysical evidence of the preparedness for a volcanic eruption: El Hierro 2011-2012
The observational data recorded by the monitoring networks during El Hierro 2011-2012 volcanic unrest and eruption, allowed us to conduct a study of the volcanic eruptive phenomena with that wide view. The lack of previous ...
Developing a management strategy for the red shrimp Aristeus antennatus fishery in the northwestern Mediterranean Sea = Desarrollo de una estrategia de gestión para la pesquería de la gamba roja Aristeus antennatus en el Mediterráneo Noroccidental
The deep-sea red shrimp Aristeus antennatus is one of the main target species for bottom trawl fishery in the northwestern Mediterranean Sea. In the Catalan region, this species is fished along the continental margin of a ...
Caracterización gravimétrica de zonas de rift en islas volcánicas oceánicas : aplicación a las islas de Tenerife y el Hierro
Los sistemas de rift en configuraciones volcánicas, se encuentran relacionadas con crecimiento de grandes edificios volcánicos y se definen como áreas de la corteza sometidas a esfuerzos extensivos que generan fracturas ...
The origin and tectono-sedimentary structure of the Alboran Basin
In this PhD thesis we present a geophysical study of the westernmost Mediterranean basin: the Alboran Basin. This basin is located between the Iberian Peninsula and North Africa, and it is surrounded by the Betics and Rif ...
Tectonic structure and formation kinematics of the Western Mediterranean basins
In this work we present a geophysical study of three Western Mediterranean basins: Valencia Trough, Gulf of Lions and Algero-Balearic Basin. The work aims to define the tectonic structure, nature of the basement, and to ...
North Atlantic Oscillation imprints in the Central Iberian Peninsula for the last two millennia: from ordination analyses to the Bayesian approach
The climate variability of the Iberian Peninsula (IP) can be explained in terms of relatively few large-scale atmospheric modes, such as the North Atlantic Oscillation (NAO), the East Atlantic (EA) and the Scandinavian ...
Two-dimensional modeling and inversion of the controlled-source electromagnetic and magnetotelluric methods using finite elements and full-space PDE-constrained optimization strategies
The controlled-source electromagnetics (CSEM) and magnetotellurics (MT) methods are common geophysical tools for imaging the Earth's electrical interior. To appreciate measured data, both methods require forward and inverse ...
Understanding the processes that controlled rifting of the Tyrrhenian basin
This thesis is focused in the processes that took place in the Tyrrhenian Sea, which is a Neogene basin belonging to the Western Mediterranean realm. Its formation is related with the subduction system of the African plate ...
Links Between Dimethylated Sulfur and Phytoplankton Photophysiology in the Surface Ocean Geographical Paterns and Short-Term Variability = Relación entre el Dimetilsulfuro y la Fotofsiología del Fitoplancton en la Superfcie del Océano. Patrones Geográfcos y Variabilidad a Corto Plazo
Dimethylsulfide (DMS) and its algal metabolite precursor, dimethylsulfoproprionate (DMSP), are major players in the oceanic and atmospheric sulfur cycle. DMS is the most abundant volatile organic sulfur compound in the ...
Occurrence, Transport and Fate of Persistent Organic Pollutants in the Global Ocean = Presencia, Transporte y Destino de Contaminantes Orgánicos Persistentes en el Océano Global
The Open Ocean has been recognized as playing a key role on global dynamics of pollutants due to its large coverage of the planet surface, its high degradation potential and its sink and accumulation capacities towards ...
Estrategias del procesado y análisis espectral de datos sísmicos para el estudio de procesos dinámicos en oceanografía física
La circulación oceánica de gran escala se encuentra relacionada con la pequeña escala a través de los procesos turbulentos, los cuales hacen posible el intercambio de energía cinética. Alrededor de la frecuencia de Coriolis, ...
Sedimentary processes and resulting continental margin configuration during large-scale sea-level drawdown: The Messinian Salinity Crisis in the Western Mediterranean Sea
At the end of the Miocene (5.97-5.33 Ma), the Mediterranean basins underwent deep morphological and sedimentological changes as a result of the large-scale sea-level fall during the so-called Messinian Salinity Crisis (MSC) ...
Development of a New Parallel Code for 3-D Joint Refraction and Reflection Travel-Time Tomography of Wide-Angle Seismic Data. Synthetic and Real Data Applications to the Study of Subduction Zones
This dissertation is devoted to seismic tomography. I have implemented a new modelling tool for 3-D joint refraction and reflection travel-time tomography of wide-angle seismic data (TOMO3D). The reason behind this central ...
Non Stationary Magnetotelluric Data Processing
Studies have proven that the desired signal for Magnetotellurics (MT) in the electromagnetic (EM) field can be regarded as 'quasi stationary' (i.e. sufficiently stationary to apply a windowed Fourier transform). However, ...
The structure of the south‐central Taiwan thrust belt
The Taiwan thrust belt is generally thought to develop above a shallow, through-going basal detachment confined to within the sedimentary cover of the Eurasian continental margin. A number of data sets, however, such as ...
Hydrmagmatic monogenetic volcanism in continental and oceanic island enronments
Monogenetic volcanism is characterized by a large diversity of eruptive styles, morphologies and deposits. Monogenetic landforms are the result of a complex merging of internal (magma composition, vesiculation) and external ...
