The Instituto Vulcanológico de Canarias (Volcanological Institute of the Canary Islands) and National Geographic Institute's seismic monitoring station located in Valverde detected increased seismic activity beginning on 17 July 2011. Coast El Golfo, El Hierro 2011 seismic activity
Local tsunami are likely to have been triggered by these landslides but no evidence has been found to confirm this.
Islas canaries series#
Detailed analysis of these deposits suggests that the slope failure did not occur as a single event but a series of smaller failures over a period of hours or days. Turbidite deposits related to this landslide have been recognized in drill cores from the Agadir Basin to the north of the Canary Islands. The landslide formed the El Golfo valley and created a debris avalanche with a volume of 150–180 km 3. The most recent of these was the 'El Golfo' landslide that occurred about 15,000 years ago, involving collapse of the northern flank of the island. There is evidence of at least three major landslides that have affected El Hierro in the last few hundred thousand years. There was a revolt of the natives against the harsh treatment of the governor Lázaro Vizcaíno, but it was suppressed. Many Frenchmen and Galicians subsequently settled on the island. In return for control over the island, Béthencourt promised to respect the liberty of the natives, but his son eventually broke his promise, selling many of the bimbaches into slavery. Augeron had been captured years before by the Europeans and now served as mediator between the Europeans and the Guanches. Béthencourt had as his ally and negotiator Augeron, brother of the island's native monarch. The ancient natives of the island, called Bimbaches, were subjected to Spanish rule by Jean de Béthencourt (d.1425) – more by the process of negotiation than by military action. The Gran diccionario guanche gives the meaning of the Guanche word hero in Spanish as "fuente" ('spring ').
It is believed that the Bimbaches had to construct cisterns to save fresh rainwater. Richard Henry Major, however, in notes on his translation of Le Canarien, observes that the Guanche word hero or herro, meaning 'cistern', could easily have lapsed into hierro by a process of folk etymology. Juan de Abreu Galindo (in a manuscript translated and published by George Glas in 1764) gives the native name of the island as Esero (or Eseró), meaning 'strong'.
It is thought to be derived from one of several words in the Guanche language of the pre-Hispanic inhabitants, known as Bimbaches. Nevertheless, the origin of the name ero or erro or yerro is not definitely known. As early as the 16th century, maps and texts called the island after the word for 'iron' in other languages: Portuguese Ferro, French l'île de Fer, and Latin Insula Ferri. The confusion with the name of the metal had effects on the international naming of the island. The H in the name of the metal is derived from the F of Latin ferrum (compare higo for 'fig'), a phonetic mutation that was complete by the end of the Middle Ages. The name El Hierro, although spelled like the Spanish word for 'iron', is not related to that word. 'Fierro' is not yet on the prime meridian, although it is close. At 268.51 square kilometres (103.67 sq mi), it is the second-smallest of the eight main islands of the Canaries.
0 kommentar(er)
