@inbook {GraciaE.BartolomeR.PereaH.MorenoX.GomezdelaPenaL.RaneroC.RLoIaconoC.Martinez-LorienteS.DiezS.MasanaE.Danobeitia2014, title = {{Seismic hazard of active faults in the Alboran Sea inferred from submarine paleosismology}}, booktitle = {Una aproximaci{\'o}n multidisciplinar al estudio de fallas activas, los terremotos y el riesgo s{\'\i}smico}, year = {2014}, pages = {101{\textendash}104}, isbn = {978-84-617-2049-1}, url = {http://www.researchgate.net/publication/267574309\_Una\_aproximacin\_multidisciplinar\_al\_estudio\_de\_las\_fallas\_activas\_los\_terremotos\_y\_el\_riesgo\_ssmico}, author = {Gr{\`a}cia, E. and Bartolome, R. and Perea, H. and Moreno, X. and G{\'o}mez de la Pe{\~n}a, L. and Ranero, C.R and Lo Iacono, C. and Martinez-Loriente, S. and Diez, S. and Masana, E. and Da{\~n}obeitia, J.} } @article {Gori2013, title = {{Bathymetrical distribution and size structure of cold-water coral populations in the Cap de Creus and Lacaze-Duthiers canyons (northwestern Mediterranean)}}, journal = {Biogeosciences}, volume = {10}, number = {3}, year = {2013}, month = {mar}, pages = {2049{\textendash}2060}, abstract = {Submarine canyons are known as one of the seafloor morphological features where living cold-water coral (CWC) communities develop in the Mediterranean Sea. We investigated the CWC community of the two westernmost submarine canyons of the Gulf of Lions canyon system: the Cap de Creus Canyon (CCC) and Lacaze-Duthiers Canyon (LDC). Coral associations have been studied through video material recorded by means of a manned submersible and a remotely operated vehicle. Video transects have been conducted and analyzed in order to obtain information on (1) coral bathymetric distribution and density patterns, (2) size structure of coral populations, and (3) coral colony position with respect to the substrate. Madrepora oculata was the most abundant CWC in both canyons, while Lophelia pertusa and Dendrophyllia cornigera mostly occurred as isolated colonies or in small patches. An important exception was detected in a vertical cliff in LDC where a large L. pertusa framework was documented. This is the first record of such an extended L. pertusa framework in the Mediterranean Sea. In both canyons coral populations were dominated by medium and large colonies, but the frequent presence of small-sized colonies also indicate active recruitment. The predominant coral orientation (90{\textdegree} and 135{\textdegree} ) is probably driven by the current regime as well as by the sediment load transported by the current flows. In general, no clear differences were observed in the abundance and in the size structure of the CWC populations between CCC and LDC, despite large differences in particulate matter between canyons. {\textcopyright} Author(s) 2013.}, issn = {1726-4189}, doi = {10.5194/bg-10-2049-2013}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84880722043\&partnerID=tZOtx3y1}, author = {Gori, A. and Orejas, C. and Madurell, T. and Bramanti, L. and Martins, M. and Quintanilla, E. and Marti-Puig, P. and Lo Iacono, C. and Puig, P. and Requena, S. and Greenacre, M. and Gili, J. M.} } @article {DeJuan2013, title = {{Benthic habitat characterisation of soft-bottom continental shelves: Integration of acoustic surveys, benthic samples and trawling disturbance intensity}}, journal = {Estuarine, Coastal and Shelf Science}, volume = {117}, year = {2013}, month = {jan}, pages = {199{\textendash}209}, abstract = {Eleven sites were located on Mediterranean continental shelves to explore the link between the physical characteristics and epibenthic fauna from soft-sediment habitats. These sites, at 32-82 m in depth, were associated with fishing grounds and the trawling intensity was estimated at the site scale to assess the effects of trawling on benthic communities. Each site was surveyed with Multi-Beam (bathymetry and backscatter), side-scan sonar, benthic grabs and a surface dredge. The sites were clustered in three habitat types. Habitat 1, with moderate trawling disturbance, was characterised by homogeneous mud and associated epifauna that was also highly homogeneous across sites. Habitat 2, with sandy mud and scattered gravel and rocks, had a high abundance of sessile suspension feeders that probably attach to the coarser substratum and benefit from the low fishing disturbance in these sites. Habitat 3 included sites with heterogeneous sediments with ma{\"e}rl as the prevailing biocenosis and having the highest species richness, despite being subjected to variable trawling intensity. Statistical models were used to relate environmental parameters and the species abundance. More than 3 physical variables were necessary to explain the epifaunal patterns across sites, including the percentage of mud, sediment heterogeneity and fishing effort. These analyses are an essential step for extrapolating information from benthic samples to the larger scale of habitats, mapped through acoustic surveys. Despite this, a good integration is required between the mapping of physical habitat distribution and the ecological knowledge of communities. {\textcopyright} 2012 Elsevier Ltd.}, keywords = {benthic habitats, Continental shelf, Fishing disturbance, Mediterranean Sea, Multi-beam, Side-scan sonar}, issn = {02727714}, doi = {10.1016/j.ecss.2012.11.012}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84873710304\&partnerID=tZOtx3y1}, author = {de Juan, S. and Lo Iacono, C. and Demestre, M.} } @article {Gracia2012a, title = {{Acoustic and seismic imaging of the Adra Fault (NE Alboran Sea): in search of the source of the 1910 Adra earthquake}}, journal = {Natural Hazards and Earth System Science}, volume = {12}, number = {11}, year = {2012}, month = {nov}, pages = {3255{\textendash}3267}, publisher = {European Geosciences Union}, abstract = {Recently acquired swath-bathymetry data and high-resolution seismic reflection profiles offshore Adra (Almer{\'\i}a, Spain) reveal the surficial expression of a NW-SE trending 20 km-long fault, which we termed the Adra Fault. Seismic imaging across the structure depicts a sub-vertical fault reaching the seafloor surface and slightly dipping to the NE showing an along-axis structural variability. Our new data suggest normal displacement of the uppermost units with probably a lateral component. Radiocarbon dating of a gravity core located in the area indicates that seafloor sediments are of Holocene age, suggesting present-day tectonic activity. The NE Alboran Sea area is characterized by significant low-magnitude earthquakes and by historical records of moderate magnitude, such as the Mw Combining double low line 6.1 1910 Adra Earthquake. The location, dimension and kinematics of the Adra Fault agree with the fault solution and magnitude of the 1910 Adra Earthquake, whose moment tensor analysis indicates normal-dextral motion. The fault seismic parameters indicate that the Adra Fault is a potential source of large magnitude (Mw <= 6.5) earthquakes, which represents an unreported seismic hazard for the neighbouring coastal areas.{\textcopyright} 2013 IEEE.}, issn = {1684-9981}, doi = {10.5194/nhess-12-3255-2012}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84881091009\&partnerID=tZOtx3y1 http://digital.csic.es/handle/10261/64147}, author = {Gr{\`a}cia, E. and Bartolome, R. and Lo Iacono, C. and Moreno, X. and Stich, D. and Mart{\'\i}nez-Diaz, J. J. and Bozzano, G. and Martinez-Loriente, S. and Perea, H. and Diez, S. and Masana, E. and Danobeitia, J. J. and Tello, O. and Sanz, J. L. and Carre{\~n}o, E.} } @article {Alfaro2012, title = {{The Bajo Segura Fault Zone: Active blind thrusting in the Eastern Betic Cordillera (SE Spain)}}, journal = {Journal of Iberian Geology}, volume = {38}, number = {1}, year = {2012}, month = {sep}, pages = {287{\textendash}300}, abstract = {The Bajo Segura Fault Zone, located at the NE end of the Eastern Betic Shear Zone, has been the site of some of the most intense seismic activity on the Iberian Peninsula in the historical and instrumental time periods. This structure is an active blind fault that does not show any surface rupture. It is characterised by a set of ENE-WSW trending blind thrust faults that offset the Triassic basement and cause active folding of the Upper Miocene-Quaternary sedimentary cover. The main active structures of this fault zone are two ENE-WSW striking reverse blind faults, the Torremendo and the Bajo Segura Faults, and several secondary NW-SE striking dextral faults (San Miguel de Salinas, Torrevieja and Guardamar Faults). These structures continue offshore to the east. From geological, geomorphological and geodetic data, we obtain fault slip rates between 0.2 and 0.4 mm/yr, whereas other authors have proposed higher values ranging between 0.75 and 1 mm/yr. The fault zone can generate earthquakes with maximum estimated magnitudes (Mw) from 6.6 to 7.1 and has approximate recurrence intervals between 4.500 and 21.500 years.}, keywords = {Active blind thrust, Bajo segura fault, Eastern betic shear zone, Palaeoseismology, Slip rate}, issn = {1886-7995}, doi = {10.5209/rev\_JIGE.2012.v38.n1.39217}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84861777780\&partnerID=tZOtx3y1}, author = {Alfaro, P. and Bartolom{\'e}, R and Borque, M.J. and Est{\'e}vez, A. and Garc{\'\i}a-Mayordomo, J. and Garc{\'\i}a-Tortosa, F.J. and Gil, A.J. and Gr{\`a}cia, E. and Lo Iacono, C. and Perea, H.} } @article {Bartolome2012, title = {{Evidence for active strike-slip faulting along the Eurasia-Africa convergence zone: Implications for seismic hazard in the southwest Iberian margin}}, journal = {Geology}, volume = {40}, number = {6}, year = {2012}, month = {apr}, pages = {495{\textendash}498}, abstract = {New seismic imaging and seismotectonic data from the southwest Iberian margin, the site of the present-day boundary between the European and African plates, reveal that active strike slip is occurring along two prominent lineaments that have recently been mapped using multibeam bathymetry. Multichannel seismic and subbottom profiler images acquired across the lineaments show seafloor displacements and active faulting to depths of at least 10 km and of a minimum length of 150 km. Seismic moment tensors show predominantly WNW-ESE rightlateral strike-slip motion, i.e., oblique to the direction of plate convergence. Estimates of earthquake source depths close to the fault planes indicate upper mantle (i.e., depths of 40-60 km) seismogenesis, implying the presence of old, thick, and brittle lithosphere. The estimated fault seismic parameters indicate that the faults are capable of generating great magnitude (Mw >= 8.0) earthquakes. Such large events raise the concomitant possibility of slope failures that have the potential to trigger tsunamis. Consequently, our findings identify an unreported earthquake and tsunami hazard for the Iberian and north African coastal areas. {\textcopyright} 2012 Geological Society of America.}, issn = {0091-7613}, doi = {10.1130/G33107.1}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84862119131\&partnerID=tZOtx3y1}, author = {Bartolome, R. and Gr{\`a}cia, E. and Stich, D. and Martinez-Loriente, S. and Klaeschen, D. and de Lis Mancilla, F. and Lo Iacono, C. and Danobeitia, J. J. and Zitellini, N.} } @article {LoIacono2012a, title = {{Large, deepwater slope failures: Implications for landslide-generated tsunamis}}, journal = {Geology}, volume = {40}, number = {10}, year = {2012}, month = {aug}, pages = {931{\textendash}934}, abstract = {Deepwater landslides are often underestimated as potential tsunami triggers. The North Gorringe avalanche (NGA) is a large (\~{}80 km3 and 35 km runout) newly discovered and deepwater (2900 m to 5100 m depth) mass failure located at the northern fl ank of Gorringe Bank on the southwest Iberian margin. Steep slopes and pervasive fracturing are suggested as the main preconditioning factors for the NGA, while an earthquake is the most likely trigger mechanism. Near-fi eld tsunami simulations show that a mass failure similar to the NGA could generate a wave >15 m high that would hit the south Portuguese coasts in \~{}30 min. This suggests that deepwater landslides require more attention in geo-hazard assessment models of southern Europe, as well as, at a global scale, in seismically active margins. {\textcopyright} 2012 Geological Society of America.}, issn = {0091-7613}, doi = {10.1130/G33446.1}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84868693659\&partnerID=tZOtx3y1}, author = {Lo Iacono, C. and Gr{\`a}cia, E. and Zaniboni, F. and Pagnoni, G. and Tinti, S. and Bartolome, R. and Masson, D. G. and Wynn, R. B. and Lourenco, N. and Pinto de Abreu, M. and Danobeitia, J. J. and Zitellini, N.} } @article {Perea2012, title = {{Quaternary active tectonic structures in the offshore Bajo Segura basin (SE Iberian Peninsula {\textendash} Mediterranean Sea)}}, journal = {Natural Hazards and Earth System Science}, volume = {12}, number = {10}, year = {2012}, month = {oct}, pages = {3151{\textendash}3168}, abstract = {The Bajo Segura fault zone (BSFZ) is the northern terminal splay of the Eastern Betic shear zone (EBSZ), a large left-lateral strike-slip fault system of sigmoid geometry stretching more than 450 km from Alicante to Almera. The BSFZ extends from the onshore Bajo Segura basin further into the Mediterranean Sea and shows a moderate instrumental seismic activity characterized by small earthquakes. Nevertheless, the zone was affected by large historical earthquakes of which the largest was the 1829 Torrevieja earthquake (IEMS98 X). The onshore area of the BSFZ is marked by active transpressive structures (faults and folds), whereas the offshore area has been scarcely explored from the tectonic point of view. During the EVENT-SHELF cruise, a total of 10 high-resolution single-channel seismic sparker profiles were obtained along and across the offshore Bajo Segura basin. Analysis of these profiles resulted in (a) the identification of 6 Quaternary seismo-stratigraphic units bounded by five horizons corresponding to regional erosional surfaces related to global sea level lowstands; and (b) the mapping of the active sub-seafloor structures and their correlation with those described onshore. Moreover, the results suggest that the Bajo Segura blind thrust fault or the Torrevieja left-lateral strike-slip fault, with prolongation offshore, could be considered as the source of the 1829 Torrevieja earthquake. These data improve our understanding of present deformation along the BSFZ and provide new insights into the seismic hazard in the area. {\textcopyright} 2012. Author(s) CC Attribution 3.0 License.}, issn = {1684-9981}, doi = {10.5194/nhess-12-3151-2012}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84867926421\&partnerID=tZOtx3y1}, author = {Perea, H. and Gr{\`a}cia, E. and Alfaro, P. and Bartolome, R. and Lo Iacono, C. and Moreno, X. and Masana, E.} } @article {Ribo2011, title = {{Dense shelf water cascades in the Cap de Creus and Palam{\'o}s submarine canyons during winters 2007 and 2008}}, journal = {Marine Geology}, volume = {284}, number = {1-4}, year = {2011}, month = {jun}, pages = {175{\textendash}188}, abstract = {The Cap de Creus and the Palam{\'o}s submarine canyon heads were instrumented during two consecutive winters to study their respective role in the dynamics of the sediment transport on the north-western Mediterranean Sea. Several events of dense shelf-water cascading (DSWC) were identified simultaneously at both canyons and compared between them. DSWC events were characterized by abrupt drops of temperature, increases of current speeds, and peaks of high suspended-sediment concentrations (SSC). Concentrations up to 170mg l -1 were recorded in both studied winters at the Cap de Creus Canyon coinciding with the first DSWC event of the winter concurrent with an eastern storm. Overall, the amount of sediment transported during the DSWC events was one order of magnitude greater at the Cap de Creus Canyon than at the Palam{\'o}s Canyon. Results from this study have identified for the first time the presence of DSWC events also in the Palam{\'o}s Canyon head, south of the Gulf of Lions (GoL), and corroborated previous findings that the Cap de Creus Canyon is the main pathway for DSWC and the associated sediment transport from the GoL down to the deeper regions of the north-western Mediterranean. {\textcopyright} 2011 Elsevier B.V.}, keywords = {Continental margin, Sediment transport, Submarine canyons, Western Mediterranean}, issn = {00253227}, doi = {10.1016/j.margeo.2011.04.001}, url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79957644806\&partnerID=tZOtx3y1}, author = {Rib{\'o}, M. and Puig, P. and Palanques, A. and Lo Iacono, C.} }