The Granada Basin, home to the Alhambra, is located in one of the most seismically active zones in the Iberian Peninsula. Historical evidence shows that the last major earthquake occurred there in 1431. New evidence indicates, however, that the topographical features of the area surrounding the Alhambra reflect recent and recurrent, though moderate, seismic activity. The research is published this week in Journal of Quaternary Science.
The Alhambra, one of the most visited monuments in Europe and a world heritage site, was the focus of research carried out by scientists in Granada. They studied the cracks and other damage to the structure of the monument, small-scale faults affecting the substratum, topographic steps, and seismic focal mechanisms, which evidence seismic activity produced by normal faults nearby the Alhambra.
Although the structural damage displayed by the Alhambra is far from significant, the cracks were able to be related with underlying faults that are possibly seismically active. Some of the cracks showed a geometrical continuity with fault planes in the underlying conglomerates, while collapsed segments of a wall surrounding the Alhambra coincide with underlying faults that cut Quaternary soil levels. Thus the structural damage and topographical steps in the neighbourhood of the Alhambra are shown to be caused by repeated earthquakes over the last 800 ka.
Jaida Butler | alfa
Wandering greenhouse gas
16.03.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Unique Insights into the Antarctic Ice Shelf System
14.03.2018 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...
On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...
The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...
At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
When the EU restricted the use of hexavalent chromium compounds to special applications requiring authorization, the move prompted a rethink in the surface...
At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...
16.03.2018 | Event News
13.03.2018 | Event News
08.03.2018 | Event News
16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences