@booklet {Dagnino,
	title = {{Comparison of Objective Functionals in Seismic Full Waveform Inversion}},
	year = {Submitted},
	publisher = {European Association of Geoscientists and Engineers},
	abstract = {The FWI method is a powerful tool that allows one to obtain high-resolution information from the subsurface. However, the method is highly non-linear as in the convergence to the solution it might get trapped in local-minima. Among other techniques, it becomes crucial a suitable choice of the objective function. We have selected five objective functions to perform a comparative study under a common 2D-acoustic FWI scheme: the L2-nom, cross-correlation travel time (CCTT), non-integration-method (NIM), envelope and phase objective functions. We test with a 2D-canonical model the susceptibility of the functions to the initial model perturbations. To complete de study with a more realistic synthetic example we test the functions with the Marmousi model. The L2-norm and phase objective functions give the highest resolution images and the CCTT, NIM and envelope objective functions lead to smooth models. However in realistic initial conditions, L2 and phase misfits fail in recovering the velocity model in contrast to the CCTT, NIM and envelope functions that maintain a more consistent behavior},
	author = {Dagnino, D and Jiminez-Tejero, C E and Ranero, C{\'e}sar R and Sallares, Valenti}
}
@article {Garcia20154261,
	title = {{Structure of the mantle beneath the Alboran Basin from magnetotelluric soundings}},
	journal = {Geochemistry, Geophysics, Geosystems},
	volume = {16},
	number = {12},
	year = {2015},
	pages = {4261{\textendash}4274},
	abstract = {We present results of marine MT acquisition in the Alboran sea that also incorporates previously acquired land MT from southern Spain into our analysis. The marine data show complex MT response functions with strong distortion due to seafloor topography and the coastline, but inclusion of high resolution topography and bathymetry and a seismically defined sediment unit into a 3-D inversion model has allowed us to image the structure in the underlying mantle. The resulting resistivity model is broadly consistent with a geodynamic scenario that includes subduction of an eastward trending plate beneath Gibraltar, which plunges nearly vertically beneath the Alboran. Our model contains three primary features of interest: a resistive body beneath the central Alboran, which extends to a depth of \~{}150 km. At this depth, the mantle resistivity decreases to values of \~{}100 Ohm-m, slightly higher than those seen in typical asthenosphere at the same depth. This transition suggests a change in slab properties with depth, perhaps reflecting a change in the nature of the seafloor subducted in the past. Two conductive features in our model suggest the presence of fluids released by the subducting slab or a small amount of partial melt in the upper mantle (or both). Of these, the one in the center of the Alboran basin, in the uppermost-mantle (20-30 km depth) beneath Neogene volcanics and west of the termination of the Nekkor Fault, is consistent with geochemical models, which infer highly thinned lithosphere and shallow melting in order to explain the petrology of seafloor volcanics. {\textcopyright} 2015. American Geophysical Union. All Rights Reserved.},
	doi = {10.1002/2015GC006100},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84955347580\&partnerID=40\&md5=9ce7a52b6fe74ed86c20613d5230a4db},
	author = {Garcia, X.a and Seill{\'e}, H.b and Elsenbeck, J.c and Evans, R.L.c and Jegen, M.d and H{\"o}lz, S.d and Ledo, J.e and Lovatini, A.f and Marti, A.e and Marcuello, A.e and Queralt, P.e and Ungarelli, C.f and Ranero, C.R.g}
}
@article {Alcalde2013481,
	title = {{3-D reflection seismic imaging of the hontom{\'\i}n structure in the basque-cantabrian Basin (Spain)}},
	journal = {Solid Earth},
	volume = {4},
	number = {2},
	year = {2013},
	pages = {481{\textendash}496},
	abstract = {The Basque-Cantabrian Basin of the northern Iberia Peninsula constitutes a unique example of a major deformation system, featuring a dome structure developed by extensional tectonics followed by compressional reactivation. The occurrence of natural resources in the area and the possibility of establishing a geological storage site for carbon dioxide motivated the acquisition of a 3-D seismic reflection survey in 2010, centered on the Jurassic Hontom{\'\i}n dome. The objectives of this survey were to obtain a geological model of the overall structure and to establish a baseline model for a possible geological CO2 storage site. The 36 km2 survey included approximately 5000 mixed (Vibroseis and explosives) source points recorded with a 25 m inline source and receiver spacing. The target reservoir is a saline aquifer, at approximately 1450 m depth, encased and sealed by carbonate formations. Acquisition and processing parameters were influenced by the rough topography and relatively complex geology. A strong near-surface velocity inversion is evident in the data, affecting the quality of the data. The resulting 3-D image provides constraints on the key features of the geologic model. The Hontom{\'\i}n structure is interpreted to consist of an approximately 10 7 m2 large elongated dome with two major (W-E and NW-SE) striking faults bounding it. Preliminary capacity estimates indicate that about 1.2 Gt of CO2 can be stored in the target reservoir. {\textcopyright} 2013 Author(s).},
	doi = {10.5194/se-4-481-2013},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84893313475\&partnerID=40\&md5=9d3f67fb71a49a58d6a7a48c1da54f43},
	author = {Alcalde, J.a b and Mart{\'\i}, D.a and Juhlin, C.c and Malehmir, A.c and Sopher, D.c and Saura, E.a and Marz{\'a}n, I.a and Ayarza, P.d and Calahorrano, A.e and P{\'e}rez-Esta{\'u}n, A.a b and Carbonell, R.a}
}
@article {Miensopust2013,
	title = {{Magnetotelluric 3-D inversion{\textendash}a review of two successful workshops on forward and inversion code testing and comparison}},
	journal = {Geophysical Journal International},
	volume = {193},
	number = {3},
	year = {2013},
	month = {mar},
	pages = {1216{\textendash}1238},
	abstract = {Over the last half decade the need for, and importance of, three-dimensional (3-D) modelling of magnetotelluric (MT) data have increased dramatically and various 3-D forward and inversion codes are in use and some have become commonly available. Comparison of forward responses and inversion results is an important step for code testing and validation prior to {\textquoteright}production{\textquoteright} use. The various codes use different mathematical approximations to the problem (finite differences, finite elements or integral equations), various orientations of the coordinate system, different sign conventions for the time dependence and various inversion strategies. Additionally, the obtained results are dependent on data analysis, selection and correction as well as on the chosen mesh, inversion parameters and regularization adopted, and therefore, a careful and knowledge-based use of the codes is essential. In 2008 and 2011, during two workshops at the Dublin Institute for Advanced Studies over 40 people from academia (scientists and students) and industry from around the world met to discuss 3-D MT inversion. These workshops brought together a mix of code writers as well as code users to assess the current status of 3-D modelling, to compare the results of different codes, and to discuss and think about future improvements and new aims in 3-D modelling. To test the numerical forward solutions, two 3-D models were designed to compare the responses obtained by different codes and/or users. Furthermore, inversion results of these two data sets and two additional data sets obtained from unknown models (secret models) were also compared. In this manuscript the test models and data sets are described (supplementary files are available) and comparisons of the results are shown. Details regarding the used data, forward and inversion parameters as well as computational power are summarized for each case, and the main discussion points of the workshops are reviewed. In general, the responses obtained from the various forward models are comfortingly very similar, and discrepancies are mainly related to the adopted mesh. For the inversions, the results show how the inversion outcome is affected by distortion and the choice of errors, as well as by the completeness of the data set. We hope that these compilations will become useful not only for those that were involved in the workshops, but for the entire MT community and also the broader geoscience community who may be interested in the resolution offered by MT. {\textcopyright} The Authors 2013. Published by Oxford University Press on behalf of The Royal Astronomical Society.},
	keywords = {Geomagnetic induction, Inverse theory, Magnetotelluric, Numerical solutions},
	issn = {0956-540X},
	doi = {10.1093/gji/ggt066},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84879858225\&partnerID=tZOtx3y1},
	author = {Miensopust, M. P. and Queralt, P. and Jones, A. G.}
}
@article {Garcia-Mayordomo2012,
	title = {{The Quaternary Active Faults Database of Iberia (QAFI v.2.0)}},
	journal = {Journal of Iberian Geology},
	volume = {38},
	number = {1},
	year = {2012},
	month = {sep},
	pages = {301{\textendash}318},
	abstract = {The Quaternary Active Faults Database of Iberia (QAFI) is an initiative lead by the Institute of Geology and Mines of Spain (Instituto Geol{\'o}gico y Minero de Espa{\~n}a, IGME) for building a public repository of scientific data regarding faults having documented activity during the last 2.59 Ma (Quaternary). QAFI also addresses a need to transfer geologic knowledge to practitioners of seismic hazard and risk in Iberia by identifying and characterizing seismogenic fault-sources. QAFI is populated by the information freely provided by more than 40 Earth science researchers, storing to date a total of 262 records. In this article we describe the development and evolution of the database, as well as its internal architecture. Additionally, a first global analysis of the data is provided with a special focus on length and slip-rate fault parameters. Finally, the database completeness and the internal consistency of the data are discussed. Even though QAFI v.2.0 is the most current resource for calculating fault-related seismic hazard in Iberia, the database is still incomplete and requires further review.},
	keywords = {Active fault, Iberia, Portugal, Quaternary, Seismic hazard, Spain},
	issn = {1886-7995},
	doi = {10.5209/rev\_JIGE.2012.v38.n1.39219},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84861912592\&partnerID=tZOtx3y1},
	author = {Garc{\'\i}a-Mayordomo, J. and Insua-Ar{\'e}valo, J.M. and Mart{\'\i}nez-D{\'\i}az, J.J. and Jim{\'e}nez-D{\'\i}az, A. and Mart{\'\i}n-Banda, R. and Mart{\'\i}n-Alfageme, S. and {\'A}lvarez-G{\'o}mez, J.A. and Rodr{\'\i}guez-Peces, M. and P{\'e}rez-L{\'o}pez, R. and Rodr{\'\i}guez-Pascua, M.A. and Masana, E. and Perea, H. and Mart{\'\i}n-Gonz{\'a}lez, F. and Giner-Robles, J. and Nemser, E.S. and Cabral, J.}
}
@booklet {Goldfinger,
	title = {{Turbidite Event History{\textemdash}Methods and Implications for Holocene Paleoseismicity of the Cascadia Subduction Zone}},
	year = {2012},
	publisher = {U. S. Geological Survey},
	abstract = {Appendices. {\textendash} 170 pages, 64 figures, 13 tables.},
	url = {http://digital.csic.es/handle/10261/66386},
	author = {Goldfinger, Chris and Nelson, C. Hans and Morey, Ann E. and Johnson, Joel E. and Patton, Jason and Karabanov, Eugene and Guti{\'e}rrez-Pastor, Julia and Eriksson, Andrew T. and Gr{\'a}cia, Eul{\`a}lia and Dunhill, Gita and Enkin, Randolph J. and Dallimore, Audrey and Vallier, Tracy}
}
@article {Evans2011,
	title = {{Electrical lithosphere beneath the Kaapvaal craton, southern Africa}},
	journal = {Journal of Geophysical Research},
	volume = {116},
	number = {B4},
	year = {2011},
	month = {apr},
	pages = {B04105},
	abstract = {A regional-scale magnetotelluric (MT) experiment across the southern African Kaapvaal craton and surrounding terranes, called the Southern African Magnetotelluric Experiment (SAMTEX), has revealed complex structure in the lithospheric mantle. Large variations in maximum resistivity at depths to 200-250 km relate directly to age and tectonic provenance of surface structures. Within the central portions of the Kaapvaal craton are regions of resistive lithosphere about 230 km thick, in agreement with estimates from xenolith thermobarometry and seismic surface wave tomography, but thinner than inferred from seismic body wave tomography. The MT data are unable to discriminate between a completely dry or slightly "damp" (a few hundred parts per million of water) structure within the transitional region at the base of the lithosphere. However, the structure of the uppermost \~{}150 km of lithosphere is consistent with enhanced, but still low, conductivities reported for hydrous olivine and orthopyroxene at levels of water reported for Kaapvaal xenoliths. The electrical lithosphere around the Kimberley and Premier diamond mines is thinner than the maximum craton thickness found between Kimberley and Johannesburg/Pretoria. The mantle beneath the Bushveld Complex is highly conducting at depths around 60 km. Possible explanations for these high conductivities include graphite or sulphide and/or iron metals associated with the Bushveld magmatic event. We suggest that one of these conductive phases (most likely melt-related sulphides) could electrically connect iron-rich garnets in a garnet-rich eclogitic composition associated with a relict subduction slab. Copyright 2011 by the American Geophysical Union.},
	issn = {0148-0227},
	doi = {10.1029/2010JB007883},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79955426798\&partnerID=tZOtx3y1},
	author = {Evans, Rob L. and Jones, Alan G. and Garcia, Xavier and Muller, Mark and Hamilton, Mark and Evans, Shane and Fourie, C. J. S. and Spratt, Jessica and Webb, Susan and Jelsma, Hielke and Hutchins, Dave}
}
@article {Miensopust2011,
	title = {{Lithospheric structures and Precambrian terrane boundaries in northeastern Botswana revealed through magnetotelluric profiling as part of the Southern African Magnetotelluric Experiment}},
	journal = {Journal of Geophysical Research},
	volume = {116},
	number = {B2},
	year = {2011},
	month = {feb},
	pages = {B02401},
	abstract = {Within the framework of the Southern African Magnetotelluric Experiment a focused study was undertaken to gain improved knowledge of the lithospheric geometries and structures of the westerly extension of the Zimbabwe craton (ZIM) into Botswana, with the overarching aim of increasing our understanding of southern African tectonics. The area of interest is located in northeastern Botswana, where Kalahari sands cover most of the geological terranes and very little is known about lithospheric structures and thicknesses. Some of the regional-scale terrane boundary locations, defined based on potential field data, are not sufficiently accurate for local-scale studies. Investigation of the NNW-SSE orientated, 600 km long ZIM line profile crossing the Zimbabwe craton, Magondi mobile belt, and Ghanzi-Chobe belt showed that the Zimbabwe craton is characterized by thick (\~{}220 km) resistive lithosphere, consistent with geochemical and geothermal estimates from kimberlite samples of the nearby Orapa and Letlhakane pipes (\~{}175 km west of the profile). The lithospheric mantle of the Ghanzi-Chobe belt is resistive, but its lithosphere is only about 180 km thick. At crustal depths a northward dipping boundary between the Ghanzi-Chobe and the Magondi belts is identified, and two middle to lower crustal conductors are discovered in the Magondi belt. The crustal terrane boundary between the Magondi and Ghanzi-Chobe belts is found to be located further to the north, and the southwestern boundary of the Zimbabwe craton might be further to the west, than previously inferred from the regional potential field data. Copyright 2011 by the American Geophysical Union.},
	issn = {0148-0227},
	doi = {10.1029/2010JB007740},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-79951472921\&partnerID=tZOtx3y1},
	author = {Miensopust, M. P. and Jones, A. G. and Muller, M. R. and Garcia, X. and Evans, R. L.}
}
@article {Nemser,
	title = {{Compilation of parameterized seismogenic sources in Iberia for the SHARE European-scale seismic source model.}},
	year = {2010},
	pages = {201{\textendash}204},
	keywords = {Database, Fault, Seismogenic, SHARE},
	isbn = {978-84-693-6088-0},
	url = {https://dspace.uevora.pt/rdpc/handle/10174/6247},
	author = {Nemser, E.S. and Garc{\'\i}a-Mayordomo, J. and Cabral, J. and Fonseca, J. and Mart{\'\i}nez-D{\'\i}az, J.J. and Alfaro Garc{\'\i}a, P. and {\`A}lvarez G{\'o}mez, J.A. and Atakan, K. and Aza{\~n}{\'o}n Hern{\'a}ndez, J.M. and Basili, R. and Besana-Ostman, G.M. and Bezzeghoud, M. and Borges, J.F. and Brum da Silveira, A. and Carlos Lopes, F. and Carvalho, J. and Dias, R.P. and Figueiredo, P.M. and Garc{\'\i}a Fern{\'a}ndez, M. and Giner Robles, J. and Gonzalez, A. and Gr{\`a}cia, E. and Gutierrez, F. and Insua Ar{\'e}valo, J.M. and Jim{\'e}nez, M.J. and Jim{\'e}nez-D{\'\i}az, A. and Lafuente Tom{\'a}s, P. and Lucha, P. and Madeira, J. and Martin Gonz{\'a}lez, F. and Masana, E. and Matias, L. and Moreno, X. and Ortu{\~n}o, M. and Perea, H. and P{\'e}rez L{\'o}pez, R. and Rodr{\'\i}guez Pascua, M.A. and Ruano, P. and Santanach, P. and Sanz de Galdeano, C. and Silva Barroso, P. and Silva, S. and Sim{\'o}n, J.L. and Terrinha, P. and Vilanova, S. and Villamor, P. and Wong, J.}
}
@article {Geissler2010,
	title = {{Focal mechanisms for sub-crustal earthquakes in the Gulf of Cadiz from a dense OBS deployment}},
	journal = {Geophysical Research Letters},
	volume = {37},
	number = {18},
	year = {2010},
	month = {sep},
	pages = {n/a{\textendash}n/a},
	abstract = {An eleven-month deployment of 25 ocean bottom seismometers provides an unprecedented opportunity to study low-magnitude local earthquakes in the complex transpressive plate boundary setting of the Gulf of Cadiz, known for the 1755 Lisbon earthquake and tsunami. 36 relocated earthquakes (ML 2.2 to 4.8) concentrate at 40-60 km depth, near the base of the seismogenic layer in \~{}140 Ma old oceanic mantle lithosphere, and roughly align along two perpendicular, NNE-SSW and WNW-ESE striking structures. First motion focal mechanisms indicate compressive stress for the cluster close to the northern Horseshoe fault termination which trends perpendicular to plate convergence. Focal mechanisms for the second cluster near the southern termination of the Horseshoe fault indicate a strike-slip regime, providing evidence for present-day activity of a dextral shear zone proposed to represent the Eurasia-Africa plate contact. We hypothesize that regional tectonics is characterized by slip partitioning. {\textcopyright} 2010 by the American Geophysical Union.},
	issn = {00948276},
	doi = {10.1029/2010GL044289},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77957722745\&partnerID=tZOtx3y1},
	author = {Geissler, W. H. and Matias, L. and Stich, D. and Carrilho, F. and Jokat, W. and Monna, S. and IbenBrahim, A. and Mancilla, F. and Gutscher, M.-A. and Sallar{\`e}s, V. and Zitellini, N.}
}
@article {Garcia2010b,
	title = {{Internal structure of the western flank of the Cumbre Vieja volcano, La Palma, Canary Islands, from land magnetotelluric imaging}},
	journal = {Journal of Geophysical Research},
	volume = {115},
	number = {B7},
	year = {2010},
	month = {jul},
	pages = {B07104},
	abstract = {Large-scale mass wasting is a natural part of the evolution of volcanic islands, where deformation and indications of flank instability, such as large-scale faulting and seismic and aseismic slip are common. The Cumbre Vieja volcano on the island of La Palma (Canary Islands) provides an ideal setting to address fundamental questions about the structure, evolution and stability of island volcanoes. The island of La Palma is still in a shield-building stage, and it has been postulated that the western side of the island lies over a pre-existing zone of weakness that can nucleate ruptures. We undertook an audiomagnetotelluric (AMT) survey over the proposed unstable western flank to try to image structures that may be associated with the zone of weakness. The magnetotelluric method (MT) is a geophysical technique used to map the presence of fluids or image important structural contrasts. The goals of this study were (1) to delineate the unstable flank, (2) to map the structures underneath and (3) to determine the presence and geometry of fluids. The results show a 1 km thick top resistive layer overlaying an area of reduced resistivity (enhanced conductivity), interpreted as a layer consisting of an alteration zone and also fluids. Our results confirm previous studies that suggested the existence of a western flank lying over collapse debris material and hyaloclastites, and also they allow us to map part of the subaerial southern extent of the Cumbre Nueva units that lie beneath the more recent Cumbre Vieja rocks. In addition, dimensionality analysis maps the rotation of the dike emplacement off ridge, along the western flank in an en echelon fashion.Copyright 2010 by the American Geophysical Union.},
	issn = {0148-0227},
	doi = {10.1029/2009JB006445},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77955204988\&partnerID=tZOtx3y1},
	author = {Garcia, X. and Jones, A. G.}
}
@article {Munjiza2010,
	title = {{The Virtual Geoscience Workbench, VGW: Open Source tools for discontinuous systems}},
	journal = {Particuology},
	volume = {8},
	number = {2},
	year = {2010},
	month = {apr},
	pages = {100{\textendash}105},
	abstract = {In 1989 work began on merging finite and discrete elements. During 1990 algorithmic solutions for the new combined method were developed, together with a C-based implementation known as the Y code. In 2004 these developments and implementations were published as a textbook. Queen Mary University of London (QMUL) and Imperial College are currently engaged in a research project to make Y codes in both 2D and 3D available in Open Source format and with mainly geoscience problems in mind. The result is a set of Open Source tools for Geoscience (VGW), key components of which are summarised in this paper, together with illustrative range of simulation results. {\textcopyright} 2009 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences.},
	keywords = {Combined finite-discrete element, Geoscience, Modelling, Workbench},
	issn = {16742001},
	doi = {10.1016/j.partic.2009.04.008},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-77949485463\&partnerID=tZOtx3y1},
	author = {Munjiza, A. and XIANG, J. and Garcia, X. and Latham, J.P. and D{\textquoteright}Albano, G.G. Schiava and John, N.W.M.}
}
@article {Jones2009,
	title = {{Area selection for diamonds using magnetotellurics: Examples from southern Africa}},
	journal = {Lithos},
	volume = {112},
	year = {2009},
	month = {nov},
	pages = {83{\textendash}92},
	abstract = {Southern Africa, particularly the Kaapvaal Craton, is one of the world{\textquoteright}s best natural laboratories for studying the lithospheric mantle given the wealth of xenolith and seismic data that exist for it. The Southern African Magnetotelluric Experiment (SAMTEX) was launched to complement these databases and provide further constraints on physical parameters and conditions by obtaining information about electrical conductivity variations laterally and with depth. Initially it was planned to acquire magnetotelluric data on profiles spatially coincident with the Kaapvaal Seismic Experiment, however with the addition of seven more partners to the original four through the course of the experiment, SAMTEX was enlarged from two to four phases of acquisition, and extended to cover much of Botswana and Namibia. The complete SAMTEX dataset now comprises MT data from over 730 distinct locations in an area of over one million square kilometres, making SAMTEX the largest regional-scale MT experiment conducted to date. Preliminary images of electrical resistivity and electrical resistivity anisotropy at 100 km and 200 km, constructed through approximate one-dimensional methods, map resistive regions spatially correlated with the Kaapvaal, Zimbabwe and Angola Cratons, and more conductive regions spatially associated with the neighbouring mobile belts and the Rehoboth Terrane. Known diamondiferous kimberlites occur primarily on the boundaries between the resistive or isotropic regions and conductive or anisotropic regions. Comparisons between the resistivity image maps and seismic velocities from models constructed through surface wave and body wave tomography show spatial correlations between high velocity regions that are resistive, and low velocity regions that are conductive. In particular, the electrical resistivity of the sub-continental lithospheric mantle of the Kaapvaal Craton is determined by its bulk parameters, so is controlled by a bulk matrix property, namely temperature, and to a lesser degree by iron content and composition, and is not controlled by contributions from interconnected conducting minor phases, such as graphite, sulphides, iron oxides, hydrous minerals, etc. This makes quantitative correlations between velocity and resistivity valid, and a robust regression between the two gives an approximate relationship of Vs [m/s] = 0.045 * log(resistivity [ohm m]) + 4.5. {\textcopyright} 2009.},
	keywords = {Cratonic lithosphere, Diamond exploration, Electrical conductivity, Kaapvaal Craton, Sub-continental lithospheric mantle, Zimbabwe Craton},
	issn = {00244937},
	doi = {10.1016/j.lithos.2009.06.011},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-72149117671\&partnerID=tZOtx3y1},
	author = {Jones, Alan G. and Evans, Rob L. and Muller, Mark R. and Hamilton, Mark P. and Miensopust, Marion P. and Garcia, Xavier and Cole, Patrick and Ngwisanyi, Tiyapo and Hutchins, David and Fourie, C.J.S. and Jelsma, Hielke and Evans, Shane and Aravanis, Theo and Pettit, Wayne and Webb, Sue and Wasborg, Jan}
}
@article {Gutierrez-PastorJ.NelsonC.H.GoldfingerC.JohnsonJ.E.EscutiaC.ErikssonA.T.MoreyA.E.\&ShipboardScientificPartyamongthemGracia2009,
	title = {{Earthquake Holocene turbidite frequency confirmed by hemipelagic sedimentation on the Cascadia and Northen California active tectonic continental margins}},
	journal = {Society for Sedimentary Geology},
	year = {2009},
	pages = {20},
	keywords = {92, C., C.H., Goldfinger, Guti{\'e}rrez-Pastor, J., Nelson, Society for Sedimentary Geology, Sp. Pub.},
	isbn = {978-1-56576-136-0.},
	url = {http://www.activetectonics.oce.orst.edu/paper\_files/Gutierrez-Pastor et al,2009.pdf},
	author = {Gutierrez-Pastor, J. and Nelson, C.H. and Goldfinger, C. and Johnson, J.E. and Escutia, C. and Eriksson, A.T. and Morey, A.E. and Shipboard Scientific Party (among them Gr{\`a}cia, E.)}
}
@article {Muller2009,
	title = {{Lithospheric structure, evolution and diamond prospectivity of the Rehoboth Terrane and western Kaapvaal Craton, southern Africa: Constraints from broadband magnetotellurics}},
	journal = {Lithos},
	volume = {112},
	year = {2009},
	month = {nov},
	pages = {93{\textendash}105},
	abstract = {A 1400~km-long, 2-D magnetotelluric (MT) profile, consisting of 69 sites at 20~km intervals, across the western part of the Archaean Kaapvaal Craton, the Proterozoic Rehoboth Terrane and the Late Proterozoic/Early Phanerozoic Ghanzi-Chobe/Damara Belt reveals significant lateral heterogeneity in the electrical resistivity structure of the southern African lithosphere. The lithospheric structures of the Rehoboth Terrane and Ghanzi-Chobe/Damara Belt have not been imaged previously by geophysical methods. Temperature is the primary control on the resistivity of mantle minerals, and the MT derived lithospheric thicknesses therefore provide a very reasonable proxy for the "thermal" thickness of the lithosphere (i.e., the thickness defined by the intersection of a conductive geotherm with the mantle adiabat), allowing approximate present-day geotherms to be calculated. The work indicates the following present-day average lithospheric thicknesses, to a precision of about {\textpm} 20~km, for each of the terranes traversed (inferred geotherms in brackets): Eastern Kimberley Block of the Kaapvaal Craton 220~km (41~mW m- 2), Western Kimberley Block 190~km (44~mW m- 2), Rehoboth Terrane 180~km (45~mW m- 2) and Ghanzi-Chobe/Damara Belt 160~km (48~mW m- 2). A clear relationship between the electrical resistivity structure of the lithosphere and the tectonic stabilisation-age of the terrane is evident. Good agreement between the inferred present-day lithospheric geotherms and surface heat flow measurements indicate the latter are strongly controlled by variations in lithospheric thickness. A significant difference in lithospheric thickness is observed between the Eastern and Western Kimberley blocks, and is consistent with previous seismic tomography images of the Kaapvaal Craton. The present-day lithospheric thickness, and reduced depth extent into the diamond stability field, accounts for the absence of diamondiferous kimberlites in the Gibeon and Gordonia kimberlite fields in the Rehoboth Terrane. Previously published mantle xenolith P-T arrays from the Gibeon, Gordonia and Kimberley fields, however, suggest that the Rehoboth Terrane had equilibrated to a cooler conductive palaeo-geotherm (40-42~mW m- 2 ), very similar to that of Eastern Kimberley Block of the Kaapvaal Craton, at some time prior to the Mesozoic eruption of the kimberlites. The timing and nature of both the thermal equilibration of the Rehoboth Terrane, and the subsequent lithospheric heating/thinning event required to account for its present-day lithospheric structure, are not well constrained. A model consisting of the penetration of heat transporting magmas into the lithosphere, with associated chemical refertilisation, at an early stage of Mesozoic thermalism appears to be the most plausible model at present to account for both the present-day lithospheric structure of the Rehoboth Terrane and an earlier, cooler palaeo-geotherm. Some problems, however, remain unresolved in terms of the isostatic response of the model. Based on a compilation of xenocryst Cr/Ca-in-pyrope barometry observations, the extent of depleted mantle in the Rehoboth Terrane is found to be significantly reduced with respect to the Eastern Kimberley Block: 117~km versus 138-167~km. It appears most likely that the depletion depth in both terranes, at least in the vicinity of kimberlite eruption, is explained by refertilisation of the lower lithospheric mantle. {\textcopyright} 2009.},
	keywords = {Diamond, Geotherm, Lithosphere, Magnetotellurics, Southern Africa, Xenolith},
	issn = {00244937},
	doi = {10.1016/j.lithos.2009.06.023},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-72049130282\&partnerID=tZOtx3y1},
	author = {Muller, M.R. and Jones, A.G. and Evans, R.L. and Gr{\"u}tter, H.S. and Hatton, C. and Garcia, X. and Hamilton, M.P. and Miensopust, M.P. and Cole, P. and Ngwisanyi, T. and Hutchins, D. and Fourie, C.J. and Jelsma, H.A. and Evans, S.F. and Aravanis, T. and Pettit, W. and Webb, S.J. and Wasborg, J.}
}
@article {Lebreiro2009,
	title = {{Sediment instability on the Portuguese continental margin under abrupt glacial climate changes (last 60kyr)}},
	journal = {Quaternary Science Reviews},
	volume = {28},
	number = {27-28},
	year = {2009},
	month = {dec},
	pages = {3211{\textendash}3223},
	abstract = {It is well established that orbital scale sea-level changes generated larger transport of sediments into the deep-sea during the last glacial maximum than the Holocene. However, the response of sedimentary processes to abrupt millennial-scale climate variability is rather unknown. Frequency of distal turbidites and amounts of advected detrital carbonate are estimated off the Lisbon-Set{\'u}bal canyons (core MD03-2698, at 4602 mwd), within a chronostratigraphy based on radiometric ages, oxygen isotopes and paleomagnetic key global anomalies. We found that: 1) higher frequency of turbidites concurred with Northern Hemisphere coldest temperatures (Greenland Stadials [GS], including Heinrich [H] events). But more than that, an escalating frequency of turbidites starts with the onset of global sea-level rising (and warming in Antarctica) and culminates during H events, at the time when rising is still in its early-mid stage, and the Atlantic Meridional Overturning Circulation (AMOC) is re-starting. This short time span coincides with maximum gradients of ocean surface and bottom temperatures between GS and Antarctic warmings (Antarctic Isotope Maximum; AIM 17, 14, 12, 8, 4, 2) and rapid sea-level rises. 2) Trigger of turbidity currents is not the only sedimentary process responding to millennial variability; land-detrital carbonate (with a very negative bulk $δ$18O signature) enters the deep-sea by density-driven slope lateral advection, accordingly during GS. 3) Possible mechanisms to create slope instability on the Portuguese continental margin are sea-level variations as small as 20 m, and slope friction by rapid deep and intermediate re-accommodation of water masses circulation. 4) Common forcing mechanisms appear to drive slope instability at both millennial and orbital scales. {\textcopyright} 2009.},
	issn = {02773791},
	doi = {10.1016/j.quascirev.2009.08.007},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-70549094210\&partnerID=tZOtx3y1},
	author = {Lebreiro, S.M. and Voelker, A.H.L. and Vizcaino, A. and Abrantes, F.G. and Alt-Epping, U. and Jung, S. and Thouveny, N. and Gr{\`a}cia, E.}
}
@article {Goldfinger2008,
	title = {{Late Holocene Rupture of the Northern San Andreas Fault and Possible Stress Linkage to the Cascadia Subduction Zone}},
	journal = {Bulletin of the Seismological Society of America},
	volume = {98},
	number = {2},
	year = {2008},
	month = {apr},
	pages = {861{\textendash}889},
	abstract = {We relate the late Holocene northern San Adreas fault (NSAF) paleoseismic history developed using marine sediment cores along the northern California continental margin to a similar dataset of cores collected along the Cascadia margin, including channels from Barclay Canyon off Vancouver Island to just north of Monterey Bay. Stratigraphic correlation and evidence of synchronous triggering imply earthquake origin, and both temporal records are compatible with onshore paleoseismic data. In order to make comparisons between the temporal earthquake records from the NSAF and Cascadia, we refine correlations of southern Cascadia great earthquakes, including the land paleoseismic record. Along the NSAF during the last \~{}2800 yr, 15 turbidites, including one likely from the great 1906 earthquake, establish an average repeat time of \~{}200 yr, similar to the onshore value of \~{}240 yr. The combined land and marine paleoseismic record from the southern Cascadia subduction zone includes a similar number of events during the same period. While the average recurrence interval for full-margin Cascadia events is \~{}520 yr, the southern Cascadia margin has a repeat time of \~{}220 yr, similar to that of the NSAF. Thirteen of the 15 NSAF events were preceded by Cascadia events by \~{}0-80 yr, averaging 25-45 yr (as compared to \~{}80-400 yr by which Cascadia events follow the NSAF). Based on the temporal association, we model the coseismic and cumulative postseismic deformation from great Cascadia megathrust events and compute related stress changes along the NSAF in order to test the possibility that Cascadia earthquakes triggered the penultimate, and perhaps other, NSAF events. The Coulomb failure stress (CFS) resulting from viscous deformation related to a Cascadia earthquake over \~{}60 yr does not contribute significantly to the total CFS on the NSAF. However, the coseismic deformation increases CFS on the northern San Andreas fault (NSAF) by up to about 9 bars offshore of Point Delgada, most likely enough to trigger that fault to fail in north-to-south propagating ruptures.},
	issn = {0037-1106},
	doi = {10.1785/0120060411},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-42649087275\&partnerID=tZOtx3y1},
	author = {Goldfinger, C. and Grijalva, K. and Burgmann, R. and Morey, A. E. and Johnson, J. E. and Nelson, C. H. and Gutierrez-Pastor, J. and Ericsson, A. and Karabanov, E. and Chaytor, J. D. and Patton, J. and Gr{\`a}cia, E.}
}
@article {Garcia2008,
	title = {{Robust processing of magnetotelluric data in the AMT dead band using the continuous wavelet transform}},
	journal = {GEOPHYSICS},
	volume = {73},
	number = {6},
	year = {2008},
	month = {nov},
	pages = {F223{\textendash}F234},
	abstract = {The energy sources for magnetotellurics (MT) at frequencies above 8 Hz are electromagnetic waves generated by distant lightning storms propagating globally within the earth-ionosphere waveguide. The nature of the sources and properties of this waveguide display diurnal and seasonal variations that can cause significant signal amplitude attenuation, especially at 1-5 kHz frequencies - the so-called audiomagnetotelluric (AMT) dead band. This lack of energy results in unreliable MT response estimates; and, given that in crystalline environments ore bodies located at some 500-1000-m depth are sensed initially by AMT data within the dead band, this leads to poor inherent geometric resolution of target structures. We propose a new time-series processing technique that uses localization properties of the wavelet transform to select the most energetic events. Subsequently, two coherence thresholds and a series of robust weights are implemented to obtain the most reliable MT response estimates. Finally, errors are estimated using a nonparametric jackknife algorithm. We applied this algorithm to AMT data collected in northern Canada. These data were processed previously using traditional robust algorithms and using a telluric-telluric magnetotelluric (TTMT) technique. The results show a significant improvement in estimates for the AMT dead band and permit their quantitative interpretation. {\textcopyright} 2008 Society of Exploration Geophysicists. All rights reserved.},
	issn = {0016-8033},
	doi = {10.1190/1.2987375},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-57149105924\&partnerID=tZOtx3y1},
	author = {Garcia, Xavier and Jones, Alan G.}
}
@article {Goldfinger2007,
	title = {{Rupture lengths and temporal history of significant earthquakes on the offshore and north coast segments of the Northern San Andreas Fault based on turbidite stratigraphy}},
	journal = {Earth and Planetary Science Letters},
	volume = {254},
	number = {1-2},
	year = {2007},
	pages = {9{\textendash}27},
	abstract = {74 piston, gravity and jumbo Kasten cores were collected from channel and canyon systems draining the northern California continental margin to investigate the record of periodic Holocene turbidites for possible connection to large magnitude earthquakes on the adjacent Northern San Andreas Fault. Poorly known channel systems were mapped with multibeam sonar to define pathways and channel confluences. Cores sampled all major and many minor channel systems extending from Cape Mendocino to just north of Monterey Bay. Sampling both along and across channels was done and particular attention was paid to channel confluences, as these areas afford opportunities to test for synchronous triggering of turbidity currents. While at sea, all cores were scanned using a GEOTEK multisensor core logger (MSCL), which collects high-resolution photography, P-wave velocity, gamma-ray density, and magnetic susceptibility data from the unsplit cores. Lithology was logged visually, and cores were later imaged with X-radiography. We use 14C ages, relative dating tests at channel confluences, and stratigraphic correlation using physical properties to determine whether turbidites deposited in separate channel systems are correlative, implying they were triggered by a common event. These tests can, in most cases, separate earthquake-triggered turbidity currents from other possible sources. The late Holocene turbidite record off northern California passes these tests for synchronous triggering, and can be correlated with multiple proxies from site to site between Noyo Channel and the latitude of San Francisco. Preliminary comparisons of our event ages with existing and in progress work at onshore coastal sites show good correlation, further circumstantial evidence that the offshore record is primarily earthquake generated. During the last \~{} 2800~yr, 15 turbidites are recognized, including the great 1906 earthquake. Their chronology establishes an average repeat time of \~{} 200~yr, similar to the onshore value of \~{} 230~yr. Along-strike correlation suggests that at least 8 of the youngest 10 of these events ruptured the 320~km distance from the Mendocino Triple Junction to near San Francisco. {\textcopyright} 2006.},
	keywords = {Northern San Andreas Fault, Paleoseismology, Turbidite},
	issn = {0012821X},
	doi = {10.1016/j.epsl.2006.11.017},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-33846271439\&partnerID=tZOtx3y1},
	author = {Goldfinger, Chris and Morey, Ann E. and Nelson, C. Hans and Guti{\'e}rrez-Pastor, Julia and Johnson, Joel E. and Karabanov, Eugene and Chaytor, Jason and Eriksson, Andrew}
}
