Tirelessly updating Avalon on the El Hierro eruption.

[Amzer Zo]

Summary of the day from Julio del Castillo Vivero with his time-lapsed video.

Of particular interest is the very beginning of the video where "burning" lava floats are seen, strikingly similar to the "C-Whale" videos... floating Chinese lanterns (see post # 1802).

Source: http://www.youtube.com/watch?v=ogIYWxqfUQ8

Same as seen from the Guardia Civil helicopter:

Source: http://www.youtube.com/watch?v=2qYhch_XI-8

Source: http://www.youtube.com/watch?v=E4R4dS11UsQ

[Amzer Zo]

Some pictures from the same Guardia Civil flight:

[Amzer Zo]

From space on the 30th:

and 31st Jan. 2012:

[Amzer Zo]

Strongest so far (no data):

For the day:

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

How is El Hierro looking like, now:

(Click on picture to go to webcam page)

Refresh your browser to get the latest traces

For the last 10 days, it now shows whatever Polly is up to as far as seismic activity is concerned:

Since the beginning

New cumulative graph starting October 10, 2011. The continuously changing scales keeps compressing the earlier graphs to the bottom and to the left!

Location of the EQs for the last 10 days:

Since the beginning

Refresh your browser page to get the latest numbers and positions.

[Amzer Zo]

Strongest so far (2.7 at 01:14):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Strongest so far (3.4 at 04:40):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Seems like Polly is kicking and groaning more than ever...

... meanwhile:

***

Thank you to the more than 85,000 viewers who support this thread!

Since July, IGN has officially logged 12,135 tremors at El Hierro... and still counting since the seismic activity is picking up again!

Thank you for your support and for dropping by!

Thank you.......

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

From space:

February 1st:

February 2sd:

February 4th:

Geolurking 3D rendering of earthquake locations from year's beginning:

Source: http://www.youtube.com/watch?v=4US-B_O9RUE

See post # 1887 for the background story mentioned in his intro to the video.

[Amzer Zo]

Strongest so far (2.6 at 15:45):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Ramon Margalef is coming back to the scene...

[Amzer Zo]

Yesterday's state of the plume:

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Now, this is very interesting: that in spite of a minimal to non-existent Harmonic Tremor (see graphs above), Polly is still spewing lava enough to generate smoking lava floats which in turns means that magma is still circulating... so, when I read of vent collapse etc... shutting down magma ejection... I am kind of doubtful.

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

In a long article published in El Mundo (http://www.elmundo.es/elmundo/2012/0...328782759.html) summarizing the views around whether or not the eruption south of La Restinga is going to last or is in its last moments; the only reliable datum provided is this one:

"We have reached the fourth month, which makes it historically the longest eruption in the Canary Islands with the exception of Lanzarote in 1730," says Marti, who argues that "symptoms" suggest that the process will be increasingly less, as noted by the composition of the magma.

In this regard, he notes that the degree of crystallinity of the rocks has changed quite a lot because, at first, when the magma was hotter, it was only about 5% of crystals, whereas now this composition is almost 50%, an indicator of apparently no deeper magma recharge.

Joan Martí adds that there are no scientific or technical means to calculate how much magma is left to get out and explains that the only thing you can do is continue the monitoring since access to the structure of an underwater volcano and its cone "is very difficult ".

The percentage of crystallized components in the lava floats was about 35% two months ago (see post # 1869).

It just means that the original magma is cooling down and not being "re-heated/melted" through new injections of fresh hot magma and, therefore, should be entirely "frozen," i.e. crystallized, soon.

However, with this recent earthquake at a depth of 26 kilometers east of Tenerife, there seems to be some magma movements deep down there...


Evento ------ Fecha ---- Hora(GMT)* -- Latitud --- Longitud -- Prof.(km) -- Int. -- Máx.Mag. -- Tipo Mag.(**) -- Localización
1125421 -- 09/02/2012 -- 03:38:09 ---- 28.2694 -- -16.3194 --- 26 ------- 2.3 ------ 4 ----- SE GÜÍMAR.ITF

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams

[Amzer Zo]

Strongest so far (no data):

For the day: :

Frequencies spectrogram, the vertical streaks indicate “events” (tremors/EQs) whereas the horizontal ones reflect volcanic/magmatic activity:

From Wikipedia: A Harmonic tremor is a sustained release of seismic and/or infrasonic energy typically associated with the underground movement of magma and/or venting of volcanic gases from magma. Being a long-duration continuous signal from a temporally extended source, a volcanic tremor contrasts distinctly with transient sources of seismic radiation, such as tremors that are typically associated with earthquake and explosion.

See top of page for the other auto-updating diagrams