4 documents found, page 1 of 1
Development and collapse of karstic cavities in folded marbles: Geomorphologica...
Martínez-Moreno, F.J.; Galindo-Zaldívar, J.; Liñán Baena, C.; González-Castillo, L.; Benavente Herrera, J.; Martínez-Martos, M.; Del Rosal Padial, Y.Karstic evolution leads to the growth and collapse of cavities by the interaction between geological structures and the hydrogeological framework. Nerja Cave developed within marbles belonging to the Alpujarride complex of the Internal Zones in the Betic Cordillera of Spain. The residual gravity anomaly map of the karstified areas –surrounding the known Nerja Cave– may indicate a likely elongated parallel cave ...
Investigating collapse structures in oceanic islands using magnetotelluric surv...
Martínez-Moreno, F.J.; Monteiro Santos, Fernando Acácio; Madeira, José; Pous, J.; Bernardo, I.; Soares, A.; Esteves, M.; Adão, F.; Ribeiro, J.One of the most remarkable natural events on Earth are the large lateral flank collapses of oceanic volcanoes, involving volumes of rock exceeding tens of km3. These collapses are relatively frequent in recent geological times as supported by evidence found in the geomorphology of volcanic island edifices and associated debris flows deposited on the proximal ocean floor. The Island of Fogo in the Cape Verde arc...
Identifying seawater intrusion in coastal areas by means of 1D and quasi-2D joi...
Martínez-Moreno, F.J.; Monteiro Santos, Fernando Acácio; Bernardo, I.; Farzamian, M.; Nascimento, C.; Fernandes, J.; Casal, B.; Ribeiro, J.A.Seawater intrusion is an increasingly widespread problem in coastal aquifers caused by climate changes –sea-level rise, extreme phenomena like flooding and droughts– and groundwater depletion near to the coastline. To evaluate and mitigate the environmental risks of this phenomenon it is necessary to characterize the coastal aquifer and the salt intrusion. Geophysical methods are the most appropriate tool to ad...
Water prospection in volcanic islands by Time Domain Electromagnetic (TDEM) sur...
Martínez-Moreno, F.J.; Monteiro Santos, Fernando Acácio; Madeira, J.; Bernardo, I.; Soares, A.; Esteves, M.; Adão, F.Water demand in islands, focused in agriculture, domestic use and tourism, is usually supplied by groundwater. Thus the information about groundwater distribution is an important issue in islands water resources management. Time Domain Electromagnetic (TDEM) provides underground resistivity distribution at greater depths and is of easier application than other methods. In this study TDEM technique was used for ...