Fernando Bohoyo

Fernando Bohoyo
Instituto Geológico y Minero de España | IGME · Geophysics

PhD. Geophysics

About

107
Publications
24,395
Reads
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1,737
Citations
Citations since 2016
38 Research Items
1163 Citations
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Additional affiliations
September 2010 - September 2011
Universidad Autónoma de Madrid
Position
  • Research Assistant
January 2006 - present
July 2004 - January 2006
British Antarctic Survey
Position
  • Antarctica Research

Publications

Publications (107)
Article
Full-text available
The Southern Ocean surrounding Antarctica is a region that is key to a range of climatic and oceanographic processes with worldwide effects, and is characterised by high biological productivity and biodiversity. Since 2013, the International Bathymetric Chart of the Southern Ocean (IBCSO) has represented the most comprehensive compilation of bathym...
Chapter
Based on the results of previously unpublished research in recent years by the Spanish research vessel Hesperidas, new and, if necessary, reinterpreted previously known sequences of linear magnetic anomalies in the Powell basin. Magnetic field anomalies were modeled from the perspective of lithospheric plate tectonics and a modern version of the el...
Article
Full-text available
In 2003, 2006–2009, 2014 and 2015, seven oceanographic cruises were carried out on board the Spanish R/V Hespérides in the Cantabrian Margin and the adjacent abyssal plains, covering an area of 219,124 km2. Based on the combined analysis and interpretation of the bathymetric and reflectivity data obtained with multibeam echosounders (SIMRADEM12, EM...
Article
Multibeam bathymetric imagery and acoustic sub-bottom profiles are used to reveal distribution patterns of sub-surface sedimentation in Dove Basin (Scotia Sea). The goals of the study are to determine the imprint of the inflow of deep Antarctic water masses from the Weddell Sea into the Scotia Sea, to establish the factors driving the styles of con...
Article
Full-text available
The variability of sedimentation patterns and processes driven by late Quaternary glacial-interglacial paleoclimatic and paleoceanographic changes are investigated in Ona Basin, southwestern Scotia Sea. The interest of this area lies in the fact that the nearby Antarctic Peninsula has recorded extreme climatic variability, and the Drake Passage-Sco...
Article
The scarcity of paleo-records from the Antarctic Peninsular region of the Southern Ocean hinders our understanding of the timing of the opening of Drake Passage, specifically in the region of the South Orkney Microcontinent (SOM) and Powell Basin, between the Scotia and Antarctic plates. At Ocean Drilling Program (ODP) Hole 696B, SOM sediments reco...
Article
Full-text available
Scotia Sea and the Drake Passage is key towards understanding the development of modern oceanic circulation patterns and their implications for ice sheet growth and decay. The sedimentary record of the southern Scotia Sea basins documents the regional tectonic, oceanographic and climatic evolution since the Eocene. However, a lack of accurate age e...
Article
Full-text available
Rifting of continental lithosphere leading to oceanic basins is a complex process conditioned by different factors such as the rheology and thermal structure of the underlying lithosphere, as well as underlying asthenospheric dynamics. All these processes, which finally lead to oceanic domains, can better be recognized in small oceanic basins. Powe...
Conference Paper
The IODP Expedition 382 (March-May 2019) focused on the study of the climatic history of the Eastern Antarctic Ice Sheet (EAIS), the chronologic correlation with dust, the implications for sea level, the changes in water masses and thermal forcing, the provenance of iceberg rafted debris, the changes in sea ice and the climatic cyclicity and its ca...
Chapter
Full-text available
According to the results of geomagnetic, studies primarily made by Spanish research vessel “Hesperidas”, in the region of the Drake Strait linear magnetic anomalies revealed. Modeling of linear magnetic anomalies within the frame of the lithospheric plates tectonics concept allowed to restore C3–C17 chrones. Analysis of the bottom geochronology and...
Article
Full-text available
Ona Basin, the westernmost oceanic basin in the southern Scotia Sea, is affected by the opposite flows of Circumpolar Deep Water (CDW) and Weddell Sea Deep Water (WSDW); thus, it represents a key location for exploring seafloor morphologies influenced by bottom currents. The present study aims to capture the spatial arrangement of recent subsurface...
Conference Paper
The large-scale reconstruction of the opening of the Drake Passage and the formation of the Scotia Sea has been attempted in previous works mainly based on integration of different geophysical datasets. However, the lack of consensus on timing and development models has prevented an accurate reconstruction of the major regional events and their glo...
Poster
Full-text available
New tectonic map of the Iberian Peninsula and its adjacent mountain ranges: The submarine domain of Alboran, Gibraltar Arc and Gulf of Cádiz
Article
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The NW Iberian continental margin has a complex structure, resulting from the succession of several rifting episodes close to a ridge triple junction, and a superimposed partial tectonic inversion stage. The wide-ranging physiography matches the diverse tectonic deformation domains related to its evolution. Each deformation domain has a distinctive...
Article
The Scotia Sea is a complex geological area located in the Southern Ocean which evolution is closely linked to the opening of the Drake Passage. Structural highs of continental nature derived from the former continental bridge between South America and the Antarctic Peninsula surround the abyssal plains of the Scotia Sea, restricting small isolated...
Article
Information gathered from multibeam echosounders and seismic profiles in the Gulf of Cadiz show several morphological reliefs having circular to sub-circular shape having been associated to mud volcanoes. The distribution of mud volcanoes in this area can be related to fluids escapes (gases and water), comprising mud and rock blocks from a pressuri...
Article
Full-text available
The Drake Passage is an oceanic gateway of about 850 km width located between South America and the Antarctic Peninsula that connects the southeastern Pacific Ocean with the southwestern Atlantic Ocean. It is an important gateway for mantle flow, oceanographic water masses, and migrations of biota. This sector developed within the framework of the...
Article
Full-text available
Asthenospheric mantle flow drives lithospheric plate motion and constitutes a relevant feature of Earth gateways. It most likely influences the spatial pattern of seismic velocity and deep electrical anisotropies. The Drake Passage is a main gateway in the global pattern of mantle flow. The separation of the South American and Antarctic plates sinc...
Article
Full-text available
The Argentine Tierra del Fuego comprises part of the roughly east-west trending southern end of the Andean Cordillera intensely deformed since the Mesozoic. Mesostructures have been measured in Late Jurassic to Miocene rocks. Taking into account statistical criteria to provide a representative stress tensor from a fault population, this study defin...
Article
Full-text available
The acoustic facies analyses have provided an important basis for sedimentary processes in the deep-sea environments. The echo-character mapping, through the interpretation and correlation of very high-resolution seismic profiles, is a very useful tool for the characterization of the recent sedimentary processes and their distribution. This work pr...
Article
Full-text available
The second generation Antarctic magnetic anomaly compilation (ADMAP-2) for the region south of 60oS includes some 3.5 million line-km of aeromagnetic and marine magnetic data that more than doubles the initial map’s near-surface database. For the new compilation, the magnetic datasets were corrected for the International Geomagnetic Reference Field...
Article
The identification of recent major tectonic structures in the Galicia continental margin and adjacent abyssal plains was carried out by means of a quantitative analysis of the linear structures having bathymetric expression on the seabed. It was possible to identify about 5800 lineaments throughout the entire study area, of approximately 271,500 km...
Article
The Gebra–Magia Complex is an important example of a submarine mass-movement composite located on the lower continental slope of the Antarctic Peninsula (Central Bransfield Basin). Continuous instability dynamics over time is inferred to have affected the palaeo-trough-mouth fans present in the study area. The depositional architecture and the outs...
Conference Paper
En el marco del proyecto ALGECO2 han sido seleccionadas tres estructuras geológicas localizadas en la plataforma continental al sur del Delta del Ebro como potenciales almacenes de CO2. Se han analizado un total de 59 perfiles de sísmica multicanal, junto con las diagrafías de tres sondeos petrolíferos para establecer las características geométrica...
Conference Paper
Full-text available
El Margen Continental Cantábrico fue elegido en el marco del proyecto ALGECO2 como una zona potencial de almacenamiento de CO2. Una de las zonas seleccionadas se localiza en torno al sondeo Mar Cantábrico J-1 (MCJ-1), situado a 1,5 km de la costa de Santander, donde han sido interpretados 30 perfiles de sísmica de reflexión multicanal. Este sondeo...
Conference Paper
Full-text available
Recent sedimentation patterns of presumed Quaternary age in the Scotia Sea appear to be dominated by contourite drifts generated by the influence of the Antarctic Circumpolar Current (ACC), the Weddell Sea Deep Water (WSDW) and/or the interaction between both water masses. Intercalated between stratified contourite deposits, chaotic lenses interpre...
Article
The spatial distribution and temporal occurrence of mass transport deposits (MTDs) in the sedimentary infill of basins and submerged banks near the Scotia-Antarctic plate boundary allowed us to decode the evolution of the tectonic activity of the relevant structures in the region from the Oligocene to present-day. The 1020 MTDs identified in the av...
Article
Full-text available
Bouguer anomaly maps are powerful cartographic tools used mainly by geoscientists and natural resources' companies (oil, mining, etc.) since they reflect rock density distribution at different depths, allowing the identification of different tectonic features. At upper crustal levels, Bouguer anomaly maps can help, for instance, in characterizing p...
Article
Dove Basin, a small oceanic domain located within the southern Scotia Sea, evidences a complex tectonic evolution linked to the development of the Scotia Arc. The basin also straddles the junction between the main Southern Ocean water masses: the Antarctic Circumpolar Current (ACC), the Southeast Pacific Deep Water (SPDW) and the Weddell Sea Deep W...
Article
Full-text available
The Iberian continental margins are mainly passive margins. Nevertheless, the northern sector of the margin was active during some stages of its geological evolution. The southern sector is considered as a transformed margin, which defines the boundary between the Iberian and African plates. This margin was also an active margin in the past. The di...
Article
Full-text available
The Iberian continental margins are mainly passive margins. Nevertheless, the northern sector of the margin was active during some stages of its geological evolution. The southern sector is considered as a transformed margin, which defines the boundary between the Iberian and African plates. This margin was also an active margin in the past. The di...
Article
Sedimentary processes in small, isolated oceanic basins that form adjacent to continental margins but detached from continents remain poorly understood. This work describes two such basins located in the southern Scotia Sea, the Protector and Pine basins. We analysed multichannel seismic profiles to interpret morphostructural features and stratigra...
Conference Paper
The objective of this work is to establish the geometric characteristics of Fault System Eastern Amposta-Northern Montsià from the interpretation of 40 multichannel seismic profiles and establish its seismic hazard. The Northern Montsià Fault is part of a system oblique to the main Eastern Amposta Fault, and it constitutes its reveal toward the nor...
Article
The geological evolution of the Scotia Arc, which developed between Antarctica and South America, has facilitated the connection between the Pacific and Atlantic oceans and, has important global implications. To improve the knowledge of the late Mesozoic evolution of the southern Scotia Arc, over 6000 brittle mesostructures were measured over the l...
Article
Full-text available
Analysis of a new regional compilation of magnetic anomalies from marine, aeromagnetic and satellite data reveals the main structural/tectonic elements of the Scotia Arc. The most relevant magnetic anomaly in the continental crust, the Pacific Margin Anomaly (PMA), is related to composite magmatic arc batholiths. It was emplaced by subduction proce...
Article
The major structural and tectonic features of the Fuegian Andes provide an outstanding onshore geological framework that aids in the understanding of the tectonic evolution of the Scotia Arc, mainly known from offshore studies. The orogenic history of the Fuegian Andes (Late Cretaceous-Miocene) is thus compared and integrated with the tectonic hist...
Article
The N-S trending Scan Basin is the easternmost deep basin north of the South Scotia Ridge, which is a geologically complex structural elevation that hosts the strike-slip boundary between the Scotia and Antarctic plates. We characterized the main morpho-structural features of the basin by analyzing the available multichannel seismic reflection prof...
Article
Full-text available
Ona Basin is a small intra-oceanic basin located in the southwestern corner of the Scotia Sea. This region is crucial for an understanding of the early phases of opening of Drake Passage, since it may contain the oldest oceanic crust of the entire western Scotia Sea, where conflicting age differences from Eocene to Oligocene have been proposed to d...
Article
The southern margin of the Scotia Sea hosts the convergent boundary between the Scotia and Antarctic plates where a number of small basins are sitated. Mass transport deposits (MTDs) within two of these small basins, Dove and Scan basins, reveal the importance of seismicity, slope instabilities and depositional processes in their growth patterns. S...
Article
Forests situated above active fault zones may record hillslope evolution, thus holding information about recent seismic events. Lenga trees (Nothofagus pumilio) extend across the Magallanes-Fagnano fault system (MFFS), the active transform boundary between the South American and Scotia plates. Coseismic surface ruptures along the fault scarp tilt t...
Article
1] The Drake Passage is considered a gateway for oceanic and asthenospheric flows since its opening, entailing widespread consequences for climate and plate tectonics, respectively. Both the surface and the 50 km upward continued Bouguer anomaly maps of the Scotia Sea and surrounding areas, based on Gravity Recovery and Climate Experiment gravity s...
Chapter
Palaeostresses inferred from approximately 3200 brittle mesostructures measured at 43 sites in Signy Island show a stress field characterized by compressional, strike-slip and extensional stress states. There is a dominant NW-SE horizontal compression direction as well as three (NNW-SSE, WNW-ESE and ENE-WSW)secondarys1 horizontal stress directions....
Article
Full-text available
The International Bathymetric Chart of the Southern Ocean (IBCSO) Version 1.0 is a new digital bathymetric model (DBM) portraying the seafloor of the circum‐Antarctic waters south of 60°S. IBCSO is a regional mapping project of the General Bathymetric Chart of the Oceans (GEBCO). The IBCSO Version 1.0 DBM has been compiled from all available bathym...
Article
Full-text available
A new magnetotelluric (MT) survey, along with new topographic parametric sonar (TOPAS) profiles and geological field observations, were carried out on the Deception Island active volcano. 3-D resistivity models reveal an ENE–WSW elongated conductor located at a depth between two and ten kilometres beneath the south-eastern part of the island, which...
Article
Multibeam echosounder data and TOPAS seismic reflection profiles collected during the AntPac 1997, Scan 2004, and Scan 2008 cruises aboard the RV Hespérides reveal a host of surficial geomorphological features as yet poorly investigated in the Scan Basin, south-central Scotia Sea. This area represents one of the deep gateways between the Weddell Se...
Article
Full-text available
Multibeam bathymetry, high resolution multi-channel, and very high resolution single-channel (3.5kHz) seismic records were used to depict the complex geomorphology that defines the Galicia Bank region (Atlantic, NW Iberian Peninsula). This region (≈620–5,000m water depth) is characterized by a great variety of features: structural features (scarps,...
Article
Full-text available
The analysis of multichannel seismic profiles reveals that the distribution of sedimentary depocenters within the Protector and Pirie basins of the southern Scotia Sea, close to the Scotia-Antarctica plate boundary, is largely due to the morpho-structural control of the basement and influenced by the distribution of bottom currents. Both basins con...
Article
Full-text available
Deception Island shows the most recent active volcanism, evidence of several eruptions since the late 18th century, and well-known eruptions in 1967, 1969, and 1970 at the western end of the volcanic ridge of the Bransfield Trough, between the South Shetland Islands and the Antarctic Peninsula. The recent tectonic activity of the Bransfield Trough...
Chapter
Full-text available
Multichannel high resolution seismic data acquired during the ERGAP 1 and ERGAP 2 allowed the interpretation of a set of NW-SE to N-S morphological features, mainly ridges, scarps and depressions, recognized in the multibeam data. These features correspond to structures of deformation (faults and folds) that have been developed over the most recent...
Chapter
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Multibeam and seismic data acquired during the ERGAP 1 and ERGAP 2 allowed the recognition and study of three big depressions which are located in the continental slope southeast of the Galicia Bank. These depressions correspond to collapses circular in shape that reach 370 m depth and whose size range between 2000 y 5000 m. Among them the so calle...
Chapter
Full-text available
A Joint submission for the extension of the Continental Shelf beyond 200 miles in respect of the area of the Celtic Sea and the Bay of Biscay was completed and submitted to the Commission on the Limits of the Continental Shelf of the United Nations by four costal states, France, Ireland, Spain and the United Kingdom of Great Britain and Northern Ir...