GMC - Resumos em livros de actas
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- Abrupt sea surface temperature changes during The Last Glacial-Interglacial Transition in the Iberian margin: sea level implicationsPublication . Rodrigues, Teresa; Grimalt, Joan O.; Abrantes, Fátima; Naughton, Filipa; Flores, José-Abel
- Active faults and geomorphology in the seafloor between the Gibraltar straits and the Tore-Madeira RisePublication . Terrinha, Pedro; Duarte, João; Valadares, Vasco; Rosas, Filipe M.; Matias, L.; Batista, L.; Gonçalves, João Noiva; Cunha, T.; Silva, S.; Gràcia, Eulàlia; Zitellini, N.Apresenta-se um mapa tectónico das falhas activas e um mapa geomorfologico entre a Crista Tore-Madeira e o estreito de Gibraltar. Classificam-se as falhas do ponto de vista geométrico, cinemático e cronológico. Apresentam-se resultados de modelação numérica e análoga para a interferência de falhas de desligamento dextrógiro (próximas de WNW-ESE/90º) e cavalgamento (NE-SW/SE) e ainda para a interferência destas falhas de desligamento com o prisma acrecionário do Golfo de Cádis. Os resultados experimentais sugerem que no primeiro caso de interferência simulado se formam falhas de coalescência entre os desligamentos e os cavalgamentos, locais onde se concentra a sismicidade registada durante 12 meses por 25 OBS (2006-07). As experiências sugerem ainda que o prisma acrecionário e os desligamentos são ambos activos no presente. Discute-se a partição da deformação e a migração da frente de deformação ao longo da Margem Ocidental Ibérica.
- An examination of potential controls on shell Mn-Ca ratios in the calcite of the bivalve Mytilus edulisPublication . Freitas, Pedro Seabra; Clarke, Leon J.; Kennedy, H. A.; Richardson, Christopher A.
- Baseline contents of Cr, Ni, Pb and Zn in the portuguese shelf sedimentsPublication . Mil-Homens, Mário; Stevens, R. L.; Cato, Ingemar; Abrantes, Fátima
- Benchmarks, sediment source and hydrodynamics of the 1755 Lisbon tsunami deposit at Boca do Rio EstuaryPublication . Font, Eric; Pires, Cristina Veiga; Pozo, Manuel; Nave, Silvia; Costas, Susana; Ruiz Muñoz, Francisco; Abad, Manuel; Simões, Nuno; Duarte, Sílvia
- Centennial-scale nannoplankton productivity changes in the Mid-latitude North Atlantic during Marine Isotope Stages 11-12 : evidence from IODP Site 1313Publication . Kulhanek, D. K.; Voelker, Antje H. L.; Grützner, J.
- Characterizing active faults and associated mass transport deposits in the South Iberian Margin (Alboran Sean and Gulf of Cadiz): on-fault and off-fault paleoseismic evidencePublication . Gràcia, Eulàlia; Bartolomé, Rafale; Lo Iacono, C.; Moreno, X.; Martínez-Loriente, S.; Perea, Hector; Masana, E.; Pallàs, R.; Diez, S.; Dañobeitia, Juanjo J.; Terrinha, Pedro; Zitellini, N.During the last years we have carried out successive high-resolution marine geological and geophysical surveys to investigate the seismic potential of the slow-moving seismogenic faults from the South Iberian Margin. Based on ,ultiscale acoustic mapping, sub-seafloor seismic imaging and dating methods we have characterized submarine fault systems with unprecedented resolution. We present primary paleoseismic evidence obtained by direct investigations of selected faults from theMediterranean Sea (i.e. Carboneras Fault, Bajo Segura Fault, Adra Fault) and the external part of the Gulf of Cadiz (i.e. Marques de Pombal Fault, Horseshoe Fault, Coral Patch Ridge Fault and SWIM lineaments). The obtained fault seismic parameters suggest that these faults are active and capable of generating large magnitude (Mw > 6) seismic events, representing an earthquake and tsunami hazard for the surrounding coastal areas. Secondary paleoseismic evidence in the SW Iberian Margin (based on landslides and turbidite deposits) yields a regional recurrence rate of large magnitude earthquake of 1800 - 2000 years.
- Climate change towards more arid conditions in SW Iberia during the HolocenePublication . Ribeiro, Carlos; Terrinha, Pedro; Voelker, Antje H. L.; Candeias, António; Azevedo, Maria do Rosário; Ribeiro, Sara; Rosado, Lúcia
- Climate changes in the Western Iberian Margin during Marine Isotope Stages 15-9, 580 to 300 : suborbital glacial variabilityPublication . Rodrigues, Teresa; Abrantes, Fátima; Voelker, Antje H. L.; Grimalt, Joan O.; Naughton, Filipa
- Climate variability during the last glacial-interglacial transition and Holocene in north-western Iberian margin and adjacent landmassesPublication . Naughton, Filipa; Sánchez Goñi, María Fernanda; Duprat, Josette; Cortijo, Elsa; Desprat, Stéphanie; Abrantes, Fátima