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Post Info TOPIC: Cumbre Vieja


L

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Date:
Mount Teide
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Tenerife volcano Mount Teide is not about to erupt, despite reports

Mount Teide, an active volcano on Tenerife, is not about to erupt despite a rash of media reports to the contrary.
A seismic swarm - a series of mini earthquakes - gripped part of the island on October 2.
The activity led to headlines claiming there was panic on the island, whose economy is strongly reliant on tourism.

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L

Posts: 130100
Date:
RE: Cumbre Vieja
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Tenerife launches volcano tourism initiative

The Tenerife Tourism Corporation has launched a new initiative encouraging visitors to discover the destination's volcanic attractions.
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L

Posts: 130100
Date:
Canadas del Teide
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Scientists identify trigger for explosive volcanic eruptions

Scientists from the University of Southampton have identified a repeating trigger for the largest explosive volcanic eruptions on Earth. The Las Cañadas volcanic caldera on Tenerife, in the Canary Islands, has generated at least eight major eruptions during the last 700,000 years. These catastrophic events have resulted in eruption columns of over 25km high and expelled widespread pyroclastic material over 130km. By comparison, even the smallest of these eruptions expelled over 25 times more material than the 2010 eruption of Eyjafjallajökull, Iceland.
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L

Posts: 130100
Date:
El Hierro
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La erupción de El Hierro se reactiva de nuevo

No se espera que los movimientos sísmicos, localizados a profundidades de unos 20 kilómetros, superen magnitudes de 3.2 grados en la escala de Ritcher.
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Potential Magmatic Intrusion Underway at El Hierro?

Seismicity under El Hierro have increased since September 13 after months to very low activity and since Friday, over 300 earthquakes have occurred. These earthquakes are mostly deep (18-22 km) and under the central part of the island, and have now reached over 115 earthquakes in the past 24 hours. This sharp increase at depth might suggest a new body of magma is intruding underneath the island. Combine that with the observation of deformation of the land surface at El Hierro, and you can be fairly confidence that new material is entering.
Source

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L

Posts: 130100
Date:
El Hierro submarine volcano
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 La desgasificación del volcán submarino de la isla de El Hierro continúa

Fundamentalmente expulsa CO2 con ausencia total de compuestos de azufre Investigadores del Instituto Español de Oceanografía (IEO) y la Universidad de Las Palmas de Gran Canaria (ULPGC), a bordo del buque oceanográfico Cornide de Saavedra (propiedad del IEO), han constatado que el volcán submarino de la isla de El Hierro continúa expulsando gases y que estos son fundamentalmente CO2, no presentando compuestos de azufre.
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Posts: 130100
Date:
El Hierro volcano
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La batimetría realizada por el IEO establece que la cima del volcán está a 130 metros de profundidad

Los levantamientos batimétricos del Ramón Margalef estiman en 145 millones de metros cúbicos el material depositado en el fondo marino

La batimetría realizada la semana pasada por los científicos del buque oceanográfico Ramón Margalef, perteneciente al Instituto Oceanográfico Español (IEO), ha establecido en 130 metros la profundidad a la que se encuentra la cima del volcán submarino. Así se lo han comunicado, esta mañana, los responsables de la campaña científica a la dirección del Plan de Protección Civil por Riesgo Volcánico (PEVOLCA).
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bat190112.gif

Latitude: 27º 37.18' N, Longitude: 17º 59. 58' W.

Google earth file: Hierro submarine Volcano.kmz (1kb, kmz)



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El Hierro volcano: increased area of upwelling muddy water and discoloration of sea water, but eruption not likely to form an island

The area of upwelling water above the new submarine vent(s) ca. 1 km off the south coast near La Restinga has increased. Muddy water and sometimes foam are visible at the spot, forming larger and smaller circular areas surrounded by greenish water drifting west. The activity occurs in irregular intervals of typically 20-40 minutes.
Another possible submarine vent is visible much further out to the SW, forming a separate greenish spot.

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L

Posts: 130100
Date:
Canary Islands underwater volcano
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Birth of an island: Underwater volcano erupts in the Atlantic

The Canary Islands, a Spanish-claimed archipelago off the coast of Morocco, have an explosive history, literally: All seven of the largest islands were formed by hot volcanic vents pushing upward through cold Atlantic waters. With the rare exception, these reeking peaks have all detonated in the last million years. The islands are also home to the third tallest oceanic volcano in the world, Mount Teide, known as a "Decade Volcano" for its history of destructive blasts and potential for snuffing out large quantities of life.
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Posts: 130100
Date:
Canary Islands
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Underwater Volcano: Offshore eruptions in Canary Islands


An underwater volcano off the coast of the Spanish island of El Hierro has begun to erupt, releasing potentially toxic gasses.



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L

Posts: 130100
Date:
Tenerife
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Geological evidence for a large landslide in Tenerife

One of the most intriguing but poorly understood landslide types is that of the volcanic flank collapse.  This is one of those rare occasions in which the geological term actually does a pretty good job of describing the phenomenon.  In a volcanic flank collapse, the side of a volcano fails, usually catastrophically, generating a landslide.  These slides can be really big - tens or even hundreds of cubic kilometres - and they can travel huge distances along the sea floor.  Such failures grabbed attention a few years ago due to the potential (overstated, in my opinion) for generating a catastrophic tsunami.
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