This work, carried put in the Dpt. of Geodynamics of the University of Granada (Universidad de Granada, [http://www.ugr.es]) and the Andalusian Institute of Earth Sciences, has given rise, for the time being, to four publications in prestigious international scientific journals. “Intense earthquakes can be registered in the area, reaching 7 degrees in the Richter scale, whose tectonic content is similar to that of other densely populated regions of the planet, like the San Andreas Fault (California, United States), the Caribbean arc or Japan”, Bohoyo points out.
Working on the ground is quite difficult. ”The campaign is brought up in Granada in detail, but once there the climatic conditions and the enormous ice blocks limit the possibilities, leaving wide unexplored sectors”, the young scientist says. Expeditions take place on board the Hespérides, ceded to the CSIC (Higher Council of Scientific Research) and crewed by the staff of the Spanish Ministry of Defence.
“The main objective is to study tectonic blocks´ fragmentation and evolution”, Professor Jesús Galindo Zaldívar explains, who is one of the persons in charge for the work, together with Andrés Maldonado López. With data of different scientific nature, researchers from Granada have obtained a map of the morphology and tectonic evolution of the area; thanks to them it has been possible to determine the expansion age of the Scotia Sea oceanic bowls. Galindo adds that “it is a continental crust area that formed a barrier between the Atlantic and the Pacific, between South America and the Antarctic Peninsula, thirty million years ago”.
Circumpolar antarctic current
The opening of this big barrier that connects the two oceans, gave rise to a circumpolar current that, at the present day, influences in a determinant way the planet´s climatology. It is the most important current in Antactica, which connects with others, isolating the anctartic continent. In fact, its existence is one of the keys of the extremely cold anctartic climate and one of the most important international scientific lines at present.
The scientific dimension of this group of the University of Granada is very relevant. Last week (the last week of August), Galindo and Bohoyo were present in the biannual meeting of the SCAR (Scientific Committee on Antarctic Research) in Bremen (Germany). This International Scientific Committee concentrates a total of 28 countries involved in the scientific knowledge of the Antarctica.
Before the work of the researchers from Granada, there were hardly a few scarcely systematized data about the Scotia Arc, from British expeditions in the seventies. As a matter of fact, Fernando Bohoyo goes to the British Antarctic Center, one of the international reference centres on the subject, at the end of this week, to go deeply into data on the external part of the tectonic arc and the northern part of the Scotia Sea. In December, they will go back to the Antarctica to collect more data and continue with this promising scientific study.
Antonio Marín Ruiz | alfa
New research calculates capacity of North American forests to sequester carbon
16.07.2018 | University of California - Santa Cruz
Scientists discover Earth's youngest banded iron formation in western China
12.07.2018 | University of Alberta
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.
Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
16.07.2018 | Physics and Astronomy
16.07.2018 | Life Sciences
16.07.2018 | Earth Sciences