Browsing Facultat de Ciències de la Terra by Title

Reactivity and composition of phytoplankton-derived organic matter: implications for the marine Carbon cycle

Cabrera Brufau, Miguel (Date of defense: 2023-02-17)

[eng] Marine phytoplankton are responsible for approximately half of the photosynthetic production of organic matter (OM) and oxygen in Earth. The composition and reactivity of phytoplankton- derived OM influences two of ...

Reconstructing the topography and water level of the Mediterranean Sea during the Messinian Salinity Crisis

Heida, Hanneke (Date of defense: 2022-12-01)

[eng] During the Messinian Salinity Crisis (MSC, 5.97 – 5.33 Ma), an environmental crisis unparalleled in recent geological history, thick evaporites were deposited in the Mediterranean Basin associated with major erosion ...

Sedimentary processes and resulting continental margin configuration during large-scale sea-level drawdown: The Messinian Salinity Crisis in the Western Mediterranean Sea

Lago Cameselle, Alejandra (Date of defense: 2015-11-16)

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) ...

Shear Waves Characterization of the Sub-surface: Imaging Active Fault and Critical Zone along the Eastern Betic Shear Zone, SE Iberian Peninsula

Handoyo (Date of defense: 2023-02-16)

[eng] The Earth System is formed by four components that sustain life: the atmosphere, the biosphere, the hydrosphere and the geosphere. The complex region in which these elements interact is known as the ‘Critical Zone’. ...

Tectonic evolution of the São Vicente area and tsunamigenic potential of the active structures in the SW Iberian margin: Implications for hazard assessment

Sánchez Serra, Cristina (Date of defense: 2021-09-09)

The southwestern margin of the Iberian Peninsula, which includes the Gulf of Cadiz, is characterized by a present-day active deformation mainly driven by the NW-SE trending convergence between the African and Eurasia plates. ...

Tectonic structure and formation kinematics of the Western Mediterranean basins

Viñas Gaza, Marina (Date of defense: 2017-01-20)

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 ...

The importance of seasonality at different levels of ecological organization in the marine ecosystem of the Northwestern Mediterranean Sea

Lloret Lloret, Elena (Date of defense: 2023-05-17)

[eng] From an oceanographic perspective, seasonality has been widely studied, and abundant research exists about low trophic level organisms such as phytoplankton and zooplankton. Nevertheless, at a regional scale, this ...

The last 70 kyr of Rano Aroi (Easter island, 27ºS) peat record: New insights for the Central Pacific paleoclimatology

Margalef Marrasé, Olga (Date of defense: 2014-03-14)

The PhD entitled “Last 70kyr of Rano Aroi (Easter Island, 27ºS) peat record: New insights for Central Pacific paleoclimatology” presents an environmental and climate reconstruction of Easter Island during the last 70.000 ...

The structure of the south‐central Taiwan thrust belt

Camanni, Giovanni (Date of defense: 2014-10-20)

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 ...

Transformations and pathways of Southern Ocean waters into the South Atlantic Ocean

Olivé Abelló, Anna (Date of defense: 2023-03-20)

[eng] The returning limb of Atlantic Meridional Overturning Circulation (AMOC) is partly supplied by the cold-fresh waters that enter through the Drake Passage. Up to the isoneutral 28.0 kg m−3, the mean water inflow through ...

Transformations and pathways of Southern Ocean waters into the South Atlantic Ocean

Olivé Abelló, Anna (Date of defense: 2023-03-20)

[eng] The returning limb of Atlantic Meridional Overturning Circulation (AMOC) is partly supplied by the cold-fresh waters that enter through the Drake Passage. Up to the isoneutral 28.0 kg m−3, the mean water inflow through ...

Two-dimensional modeling and inversion of the controlled-source electromagnetic and magnetotelluric methods using finite elements and full-space PDE-constrained optimization strategies

Galiana Blanch, Savitri (Date of defense: 2016-09-27)

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

Guzman Vendrell, Montserrat (Date of defense: 2015-11-30)

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 ...

Volcanic risk assessment at Irazú volcano, Costa Rica

Campos Durán, Daniela (Date of defense: 2023-11-23)

[eng] Irazu is the highest volcano in Costa Rica (3427 m.a.s.l.); it constitutes an andesitic shield, with two main craters at the top and several pyroclastic cones cuspidal, and adventitial on the South Flank. The first ...