WKN Weer, Klimaat en Natuurrampen
Lees alles over het onstuimige weer op onze planeet, volg orkanen en tornado's, zie hoe vulkanen uitbarsten en hoe Moeder Aarde beeft bij een aardbeving. Alles over de verwoestende kracht van onze planeet en tal van andere natuurverschijnselen.
Oftewel: all bets are offquote:Op dinsdag 2 april 2013 17:22 schreef stan12 het volgende:
This is a short blog post about the earthquake swarm in Tjörnes Fraction Zone.
The largest earthquake so far is a magnitude 5.5. The largest aftershocks so far are magnitude 4.4 that took place at 01:14 UTC and 4.7 that took place at 08:55 UTC this morning. This earthquake swarm is taking place on a complex fault area that is highly active. There is also big question what effect this earthquake swarm is going to have on other faults in the area. There is a risk that this earthquake swarm is going to start other earthquake swarms in nearby faults.
130402_1430
The earthquake activity in TFZ. Green stars are earthquakes that are larger then magnitude 3.0. Copyright of this image belongs to Icelandic Meteorological Office.
130402_1430_trace
This trace shows how dense this earthquake swarm has been. Copyright of this image belongs to Icelandic Meteorological Office.
bhrz.svd.02.04.2013.14.05.utc
The earthquake is appearing clearly on my geophone network. This is Böðvarshólar geophone station. This image is released under Creative Commons licence. Please see the CC Licence page for more details.
hkbz.svd.02.04.2013.14.05.utc
The largest earthquakes as they did appear on Heklubyggð geophone station. This image is released under Creative Commons licence. Please see the CC Licence page for more details.
There have been over 500 earthquake recorded since this earthquake swarm did start. It is impossible to know for sure when this earthquake swarm is going to stop, or if it is going to pick up again. But the earthquake swarm is already starting to shown signs of dropping activity. But that might change again if there is new larger earthquake in this area, or swarm of larger earthquake.
I am going to post update of anything major happens in this earthquake swarm. It is possible to monitor the current status of this earthquake swarm here on my geophone web page.
Bron: http://www.jonfr.com/volcano/
en verder geen idee...
Dare to unleash my rage..
That's my secret Captain... I'm always angry...
There's nothing like a trail of blood, to find your way back home.
That's my secret Captain... I'm always angry...
There's nothing like a trail of blood, to find your way back home.
Denk niet dat er qua seismische activiteit in de zee heftige verschijnselen op kunnen treden aangezien de platen waar IJsland op ligt uit elkaar bewegen ipv dat er subductie plaatsvindt wat af en toe vast loopt en losschiet.
Swarm!quote:
De Borg komen er aan
Inorbit: zeg dat dan typluie triangeljosti
Beauregard: Een beetje FOK!ker laat het brood door z'n moeder smeren.
Ecosia
ek's 'n flash drive, jy's 'n floppy
Beauregard: Een beetje FOK!ker laat het brood door z'n moeder smeren.
Ecosia
ek's 'n flash drive, jy's 'n floppy
Update on the TFZ earthquake swarm at 18:31 UTC
Posted on April 3, 2013 by Jón Frímann
This is a short update on the TFZ earthquake swarm. There is no point in making a long update about what is taking place in TFZ at the moment. Since information gets outdated quickly during this earthquake swarm.
About 775 earthquakes have been recorded by Icelandic Meteorological Office since this earthquake swarm started on 2. April 2013 (about 48 hour period). This number is going to be outdated soon or already is outdated by the time this blog post gets published. Since there are about 40 – 60 earthquakes every 1 hour currently. The earthquake swarm however drops regularly in terms of activity. Over 80 magnitude 3.0 earthquakes have been recorded so far. This number is going to increase if this earthquake swarm continues as it has been doing for the past 48 hour period.
The earthquake activity in TFZ. The green stars show the earthquakes with larger magnitudes then 3.0. There is a second fault that has gone active since the earthquake activity started yesterday (02.04.2013). Copyright of this image belongs to Icelandic Meteorological Office.As can be seen here. The earthquake swarm has been really powerful at times. Copyright of this image belongs to Icelandic Meteorological Office.
This earthquake swarm is the largest one in the area for long time now. At the moment there are no sign about that this earthquake swarm is about to end any time soon.
skj20130403a
Map showing the largest earthquakes in this swarm. Copyright of this image belongs to Icelandic Meteorological Office.
gri.03.04.2013.16.58.utc
Earthquake activity as it appears on Grímsey SIL station. Copyright of this image belongs to Icelandic Meteorological Office.
skr.svd.03.04.2013.16.58.utc
Earthquake activity as it appears on Skrokkalda SIL station. Copyright of this image belongs to Icelandic Meteorological Office.
nor.svd.03.04.2013
Reviewed area of earthquake activity on TFZ. This map does not show the current earthquakes. It is few hours old also. Copyright of this image belongs to Icelandic Meteorological Office.
This earthquake swarm is complex and might last for a long time. There is a continued risk of a large earthquake in this area. But there has not been a earthquake larger then magnitude in this part of TFZ since 1910 at least. So this area has a lot of build up stress. Since there has not been a strong earthquake there for a long time. But the magnitude 5.5 earthquake and the following aftershocks have just released tiny amount of the stress that has build up in this area.
Map showing historical earthquake activity in TFZ. The image is from here. Copyright of this image belongs to Gunnar B. Gudmundsson, Pall Halldorsson, Ragnar Stefansson and other connected people.
For the moment. It is just best to keep watching the activity that is taking place in TFZ. It is impossible to know for sure what happens in TFZ during the next few hours to days.
Posted on April 3, 2013 by Jón Frímann
This is a short update on the TFZ earthquake swarm. There is no point in making a long update about what is taking place in TFZ at the moment. Since information gets outdated quickly during this earthquake swarm.
About 775 earthquakes have been recorded by Icelandic Meteorological Office since this earthquake swarm started on 2. April 2013 (about 48 hour period). This number is going to be outdated soon or already is outdated by the time this blog post gets published. Since there are about 40 – 60 earthquakes every 1 hour currently. The earthquake swarm however drops regularly in terms of activity. Over 80 magnitude 3.0 earthquakes have been recorded so far. This number is going to increase if this earthquake swarm continues as it has been doing for the past 48 hour period.
The earthquake activity in TFZ. The green stars show the earthquakes with larger magnitudes then 3.0. There is a second fault that has gone active since the earthquake activity started yesterday (02.04.2013). Copyright of this image belongs to Icelandic Meteorological Office.As can be seen here. The earthquake swarm has been really powerful at times. Copyright of this image belongs to Icelandic Meteorological Office.
This earthquake swarm is the largest one in the area for long time now. At the moment there are no sign about that this earthquake swarm is about to end any time soon.
skj20130403a
Map showing the largest earthquakes in this swarm. Copyright of this image belongs to Icelandic Meteorological Office.
gri.03.04.2013.16.58.utc
Earthquake activity as it appears on Grímsey SIL station. Copyright of this image belongs to Icelandic Meteorological Office.
skr.svd.03.04.2013.16.58.utc
Earthquake activity as it appears on Skrokkalda SIL station. Copyright of this image belongs to Icelandic Meteorological Office.
nor.svd.03.04.2013
Reviewed area of earthquake activity on TFZ. This map does not show the current earthquakes. It is few hours old also. Copyright of this image belongs to Icelandic Meteorological Office.
This earthquake swarm is complex and might last for a long time. There is a continued risk of a large earthquake in this area. But there has not been a earthquake larger then magnitude in this part of TFZ since 1910 at least. So this area has a lot of build up stress. Since there has not been a strong earthquake there for a long time. But the magnitude 5.5 earthquake and the following aftershocks have just released tiny amount of the stress that has build up in this area.
Map showing historical earthquake activity in TFZ. The image is from here. Copyright of this image belongs to Gunnar B. Gudmundsson, Pall Halldorsson, Ragnar Stefansson and other connected people.
For the moment. It is just best to keep watching the activity that is taking place in TFZ. It is impossible to know for sure what happens in TFZ during the next few hours to days.
As van Eyjafjallajökull zorgt voor enorme planktonboost
De uitbarsting van de IJslandse vulkaan Eyjafjallajökull zorgde drie jaar geleden niet enkel voor chaos in de luchtvaart, maar ook voor een enorme toename van de hoeveelheid plankton in de Atlantische Oceaan. Dat staat te lezen op de website van de Britse openbare omroep BBC.
Eind maart 2010 vertoonde de Eyjafjallajökull tekenen van vulkanische activiteit en op 14 april begon een explosieve uitbarsting. In grote delen van Europa werd het vliegverkeer dagenlang volledig stilgelegd vanwege de asdeeltjes in de atmosfeer, die de vliegtuigen konden beschadigen.
Op het leven in de oceaan had de uitbarsting een veel positievere invloed dan op de luchtvaart. In grote delen van het noordelijke stuk Atlantische Oceaan werden opgeloste ijzerdeeltjes afgezet, waardoor de hoeveelheid plankton, een microscopisch klein organisme, er enorm toenam. De toename was wel van korte duur, want de ijzerdeeltjes losten snel op.
"Onze studie was uniek in die zin dat we de eersten waren om stalen te nemen van vulkanische afzettingen in de zee, om de chemische en biologische effecten van de uitbarsting te onderzoeken", aldus wetenschapper Eric Achterberg in het wetenschappelijke magazine Geophysical Research Letters.
hln
De uitbarsting van de IJslandse vulkaan Eyjafjallajökull zorgde drie jaar geleden niet enkel voor chaos in de luchtvaart, maar ook voor een enorme toename van de hoeveelheid plankton in de Atlantische Oceaan. Dat staat te lezen op de website van de Britse openbare omroep BBC.
Eind maart 2010 vertoonde de Eyjafjallajökull tekenen van vulkanische activiteit en op 14 april begon een explosieve uitbarsting. In grote delen van Europa werd het vliegverkeer dagenlang volledig stilgelegd vanwege de asdeeltjes in de atmosfeer, die de vliegtuigen konden beschadigen.
Op het leven in de oceaan had de uitbarsting een veel positievere invloed dan op de luchtvaart. In grote delen van het noordelijke stuk Atlantische Oceaan werden opgeloste ijzerdeeltjes afgezet, waardoor de hoeveelheid plankton, een microscopisch klein organisme, er enorm toenam. De toename was wel van korte duur, want de ijzerdeeltjes losten snel op.
"Onze studie was uniek in die zin dat we de eersten waren om stalen te nemen van vulkanische afzettingen in de zee, om de chemische en biologische effecten van de uitbarsting te onderzoeken", aldus wetenschapper Eric Achterberg in het wetenschappelijke magazine Geophysical Research Letters.
hln
De 2 bevingen van gister zijn vandaag opgewaardeerd naar 1.3 en 0.9. Nu weer een beving van 1.1 en op 7.2km diepte.
quote:Minor glacier flood and steam explosion from Kverkfjöll volcano
In a announcement from Icelandic Meteorological Office, an minor glacier flood has now taking place from Kverkfjöll volcano, it appears to have started yesterday (15-August-2013). This is one of the minor glacier lakes in Kverkfjöll volcano. This glacier flood in minor and the water levels are not expected to reach more than normal summer level in the glacier river the flood is going into. The glacier river is called Volga and is a glacier river from Kverkfjöll volcano glacier area.
Currently Icelandic Meteorological Office is taking a trip over Kverkfjöll volcano to see the local changes and what is exactly is going on. Current status of the glacier flood is not well known, but latest report suggested that some subsiding was taking place, if that is because the glacier flood is over or something else is taking place I am not sure about at present time.
Update 1: Icelandic Civil Protection has confirmed that steam explosion took place in Kverkfjöll volcano following the glacier flood (due to sudden pressure release) that took place during the night and in the morning. News about that can be found here in Icelandic.
Allemaal tussen de 20 en 26km diepte. Ben benieuwd want ik heb sinds jaren geen bevingen gezien in de Katla op deze diepte. 4 Dagen geleden was er ook een Swarm ten zuid-oosten van de Katla op de zelfde diepte.
http://www.jonfr.com/volcano/ maar eens in de gaten houden
http://www.ijsland-enzo.nl/ijsland/actueel_nieuwspagina.aspquote:Er is een gletsjervloed gestart vanaf de Vatnajokull-gletsjer. Deze volgt de rivier Skafta. De waterverplaatsing is opgelopen van 80m3/sec 18-01 naar 370m3/sec 19-01 18:00.
Langs de rivier wordt een sterke zwavellucht geroken. Deze is zeer giftig. Mensen wordt om deze reden aangeraden, om NIET dicht bij de rivier te komen.
Het is nog onduidelijk of deze uitstroom gevolgen heeft voor de ringweg, maar de verwachting is van niet.
Deze gletsjervloed werd al weken verwacht.
De Skafta loopt van de Vatnajokull-gletsjer westelijk van Kirkjubaerjarklaustur naar zee.
Op dit moment 20-01 17:00 is de uitstroom alweer verminderd tot 350m3/sec. Er hebben zich geen problemen voorgedaan.
Zag afgelopen weekend nog een documentaire over Katla... erg boeiend... volgens mij was het op Nat.Geo of History... weet ik ff niet meer.
Dat was "How the earth works" op Discoveryquote:
Zag afgelopen weekend nog een documentaire over Katla... erg boeiend... volgens mij was het op Nat.Geo of History... weet ik ff niet meer.
.Erg interessant om te zien. Ook leuk dat ze op de Solheimgletsjer liepen. Een maand geleden wandelde ik daar zelf ook namelijk
.
Ah dat was um idd, Discovery dusquote:
[..]
Dat was "How the earth works" op Discovery
Erg interessant om te zien. Ook leuk dat ze op de Solheimgletsjer liepen. Een maand geleden wandelde ik daar zelf ook namelijk
Heb het net gedownload en gekeken, mooie docu. 
En meteen ook maar die van Krakatoa en Campi Flegrei gekeken.
En meteen ook maar die van Krakatoa en Campi Flegrei gekeken.
Webcam Heklaquote:Hekla Volcano “Could Erupt Soon
The magma chamber under volcano Hekla is now almost full, according to Páll Einarsson, professor in geophysics at University of Iceland.
Hekla, which is the most active volcano in Iceland, could erupt with very short notice, Páll told Morgunblaðið, adding that people should not climb the mountain.
During the last eruption, in 2000, it took just 79 minutes from the first quake until eruption, and Páll says that is longer than in previous eruptions.
Hekla has erupted more than 20 times in the last 1,000 years. The last big eruption in Hekla was in 1947.
Wat meer informatie
More magma in Hekla magma chamber then before 2000 eruption
Posted on March 17, 2014 by Jón Frímann
Send to Kindle
According to news today on mbl.is there is now more magma in Hekla volcano then before the 2000 eruption. The news says that since the year 2006 there has been more magma in Hekla magma chamber then before the last eruption in the year 2000. This has not meant an eruption so far. Hekla volcano magma chamber have the depth of around 10 to 20 km. This means this inflation that is now taking place does not appear clearly on the surface, but changes are being measured by GPS system that Icelandic Meteorological Office has. This is also appearing on GPS instruments that geological department University of Iceland has. Even if inflation is now more in Hekla volcano then during the eruptions in the year 1991 and 2000 it does not mean that next eruption is going to be bigger. Since the size of the eruption depends on how much of the magma is mobile in the magma chamber. That amount remains unknown until eruption takes place and even then not all of the mobile magma might erupt.
It is also pointed out in the news that it is risky to go on top of Hekla volcano as is. At least while no eruption has taken place currently. Since the risk of eruption is in place and the time from magma starts to move and until eruption takes place is short. Often less then 1 hour. It is advised in this news that people should not go on top of Hekla volcano. The risk is that eruption starts and trap people on top of the volcano, with deadly consequences.
It is possible to read the Icelandic news here. Please use Google Translate with care. It’s not always correct.
Kvikusöfnun meiri í Heklu en árið 2000 (mbl.is)
http://www.jonfr.com/volcano/
More magma in Hekla magma chamber then before 2000 eruption
Posted on March 17, 2014 by Jón Frímann
Send to Kindle
According to news today on mbl.is there is now more magma in Hekla volcano then before the 2000 eruption. The news says that since the year 2006 there has been more magma in Hekla magma chamber then before the last eruption in the year 2000. This has not meant an eruption so far. Hekla volcano magma chamber have the depth of around 10 to 20 km. This means this inflation that is now taking place does not appear clearly on the surface, but changes are being measured by GPS system that Icelandic Meteorological Office has. This is also appearing on GPS instruments that geological department University of Iceland has. Even if inflation is now more in Hekla volcano then during the eruptions in the year 1991 and 2000 it does not mean that next eruption is going to be bigger. Since the size of the eruption depends on how much of the magma is mobile in the magma chamber. That amount remains unknown until eruption takes place and even then not all of the mobile magma might erupt.
It is also pointed out in the news that it is risky to go on top of Hekla volcano as is. At least while no eruption has taken place currently. Since the risk of eruption is in place and the time from magma starts to move and until eruption takes place is short. Often less then 1 hour. It is advised in this news that people should not go on top of Hekla volcano. The risk is that eruption starts and trap people on top of the volcano, with deadly consequences.
It is possible to read the Icelandic news here. Please use Google Translate with care. It’s not always correct.
Kvikusöfnun meiri í Heklu en árið 2000 (mbl.is)
http://www.jonfr.com/volcano/
