Best El Hierro Thread On GLP - Canary Islands - ACTIVITY HAS RETURNED - AGAIN! | |
Anonymous Coward User ID: 3035674 United Kingdom 10/10/2011 05:46 PM Report Abusive Post Report Copyright Violation | spot the difference? [link to www.01.ign.es] explain? An insight look at Harmonic Tremors; Bernard Chouet From Wikipedia, the free encyclopedia Bernard A. Chouet (born 1945) is a geophysicist who specializes in volcanic seismology. He discovered that volcanic eruptions could be predicted by observing the frequency of certain seismic waves that are generated by volcanoes. Prediction of volcanic eruptions Since 1977, Chouet’s colleague Keiiti Aki had been developing mathematical models of magma-filled fractures in volcanoes, in order to determine what seismic waves would be produced by such fractures.[2] Since 1985 Chouet himself had also been developing models of such fractures.[3] The turning point in Chouet’s research occurred in 1986, when Chouet examined the seismic records of the 1985 eruption of the Nevado del Ruiz volcano in Colombia.[4] In the seismic records, he found that so-called “B-type events” or “long-period events” had occurred with increasing frequency prior to the eruption. (“Long-period events” are the records of seismic waves that are produced by volcanic fluids surging through fissures in a volcano — a phenomenon similar to water hammer.) Chouet then used the occurrence of long-period events to predict the 1989 and 1990 eruptions of Mount Redoubt in Alaska and the 1993 eruption of Galeras in Columbia.[5][6] In 2000, Mexican officials used Chouet’s methods to predict the eruption of Popocatépetl in Mexico. (For further information, see Wikipedia's entry: Prediction of volcanic activity .) Linky; [link to en.wikipedia.org] Water Hammer; Water hammer (or, more generally, fluid hammer) is a pressure surge or wave resulting when a fluid (usually a liquid but sometimes also a gas) in motion is forced to stop or change direction suddenly (momentum change). Water hammer commonly occurs when a valve is closed suddenly at an end of a pipeline system, and a pressure wave propagates in the pipe. It may also be known as hydraulic shock. This pressure wave can cause major problems, from noise and vibration to pipe collapse. It is possible to reduce the effects of the water hammer pulses with accumulators and other features. Rough calculations can be made either using the Joukowsky equation,[1] or more accurate ones using the method of characteristics. Linky; [link to en.wikipedia.org] |
Anonymous Coward User ID: 3010200 Portugal 10/10/2011 05:48 PM Report Abusive Post Report Copyright Violation | Special report: Eruption at El Hierro volcano, Canary Islands Posted on October 10, 2011 by Jón Frímann At 04:18 UTC on 10 October, 2011 a eruption did start somewhere close to the El Hierro volcano Island (but inside El Hierro volcano system). So far nothing has been seen to this eruption, so location is uncertain at the moment. At the moment this eruption has only been confirmed by harmonic tremors seen on seismometers on El Hierro island. From what I can tell, based on the harmonic tremor plots. It seems that the eruption has been growing in size since it started well over 12 hours ago. This suggests that the eruption is growing in size. more at link [link to www.jonfr.com] |
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Anonymous Coward User ID: 3028716 United Kingdom 10/10/2011 06:10 PM Report Abusive Post Report Copyright Violation | [link to www.wired.com] 5 Mins Ago GeoRaving Seems that earthquakes are ongoing. 20:09 for example. [link to i56.tinypic.com] |
Anonymous Coward User ID: 3028716 United Kingdom 10/10/2011 06:15 PM Report Abusive Post Report Copyright Violation | [link to www.wired.com] Quoting: Anonymous Coward 3028716 5 Mins Ago GeoRaving Seems that earthquakes are ongoing. 20:09 for example. [link to i56.tinypic.com] Its the green spike that jumps up into the blue area. Earthquakes are still happening, there just not telling us. |
curiouslyinterested User ID: 1555914 Canada 10/10/2011 06:29 PM Report Abusive Post Report Copyright Violation | Ya. According to the Report, there have only been 5 minor tremors today.... LOL [link to www.01.ign.es] |
Anonymous Coward User ID: 2877994 United States 10/10/2011 06:31 PM Report Abusive Post Report Copyright Violation | You're welcome...my family on the other hand isn't so happy I'm devoting my time to it :) Please tell your wife, from one female to another, I understand how she feels. However, you are providing a place/thread that is factual and hard to come by elsewhere. Maybe if you haven't already done so, you could involve her a little more. If you have, let her know how much we appreciate her lending you to us at the time. Sweet of you to say so. Thanks :) |
doc P (miss) User ID: 1380857 Netherlands 10/10/2011 06:34 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1225332 United States 10/10/2011 06:37 PM Report Abusive Post Report Copyright Violation | Looking from Tenerife, there has been a massive ship out to sea all day. Now all lit up, just wondering if they are monitoring. All ships we usually see are passing by but this has been out there at least 12hrs now. Quoting: Anonymous Coward 2790935 do you get that sinking feeling that maybe you'll miss the boat?.... USS ILLUMINATI ? /\ That!!! |
Anonymous Coward User ID: 1679900 United States 10/10/2011 06:39 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 3014950 United States 10/10/2011 06:39 PM Report Abusive Post Report Copyright Violation | Looking back at the past weeks ... some thoughts: Quoting: Anonymous Coward 3025946 1. The authorities and scientists don't really seem to know what they talk about, making in the best of cases educated guesses. They had put the possibility of an eruption at just a 15%, and it has happened. Either they are incompetent, where lying, or simply fail to recognise that the state of science doesn't enable to give any sort of prediction. Seems you can get the same results by looking into a crystal ball. 2. The authorities and scientists have being constantly repeating that people had nothing to fear about, they would warn in advance if any changes happened in the situation. They didn't. It seems to have been local fishermen. Hours passed without an official statement. They are just too slow, for those of you expecting the tsunami doom, you can't expect to be warned in advance, by the time they have finished checking the data and decide to do anything hours could have passed. |
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curiouslyinterested User ID: 1555914 Canada 10/10/2011 06:44 PM Report Abusive Post Report Copyright Violation | And I think the seismograph and PDS have stalled again. Seems to have stopped at 22:08 (including the PSD). [link to www.01.ign.es] |
doc P (miss) User ID: 1380857 Netherlands 10/10/2011 06:46 PM Report Abusive Post Report Copyright Violation | Quoting: Shenue |
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Anonymous Coward User ID: 1783204 10/10/2011 08:10 PM Report Abusive Post Report Copyright Violation | [link to www.01.ign.es] 9,978....slowly creeing to 10k |
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DoorBert User ID: 1520426 United States 10/10/2011 08:24 PM Report Abusive Post Report Copyright Violation | Submarine eruption [now official] based on ground deflation, reduced seismicity, tremor + dead fishes [link to twitter.com] |
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PsycoCandy User ID: 3050468 Brazil 10/10/2011 08:35 PM Report Abusive Post Report Copyright Violation | Submarine eruption [now official] based on ground deflation, reduced seismicity, tremor + dead fishes Quoting: DoorBert [link to twitter.com] [link to translate.google.com.br] "The Directorate for Civil Protection Specific Plan and Emergency Response for Volcanic Risk (PEVOLCA) confirmed, at the end of the meeting tonight, which has begun the process eruption on the island of El Hierro about 5 miles of the coast and depth of about one kilometer, thereby preventing the magmatic material to surface. " |
Geos User ID: 586866 United States 10/10/2011 08:39 PM Report Abusive Post Report Copyright Violation | [link to www.01.ign.es] 9,978....slowly creeing to 10k Quoting: Idgits Is the alert up to orange now? or still at yellow? Eruption sure didn't relieve any energy overall. A massive underwater eruption could be just as bad as one on the surface - landslide above or below the water's surface. |
DoorBert User ID: 1520426 United States 10/10/2011 08:43 PM Report Abusive Post Report Copyright Violation | Volcanologists have confirmed that this Monday morning has been a submarine volcanic eruption about 5 kilometers from the village of La Restinga, El Hierro in the municipality of El Pinar. [link to www.elmundo.es] |