„Það hefur ekki verið hennar sérfag að haga sér þannig, þannig að þegar það kemur skjálftahrina í Bárðarbungu er alveg full ástæða til þess að vera á varðbergi.“
mbl.is/RAX
„Þegar það kemur skjálftahrina í Bárðarbungu er alveg full ástæða til þess að vera á varðbergi,“ segir Páll Einarsson, prófessor emeritus í jarðeðlisfræði við Háskóla Íslands, í samtali við mbl.is.
Kröftug skjálftahrina hófst í Bárðarbungu í gær þegar skjálfti af stærðinni 4,8 reið yfir rétt eftir klukkan átta.
Síðan hafa yfir 400 skjálftar mælst þó að virknin virðist vera í rénun.
Í tilkynningu frá Veðurstofunni sagði að hrinan væri ein sú kröftugasta síðan síðustu eldsumbrot urðu í Bárðarbungu á árunum 2014 til 2015 og eldgos varð í Holuhrauni.
Minni á aðdraganda Gjálpargossins
Páll segir skjálftahrinuna ekki minna á aðdraganda Holuhraunsgossins heldur frekar á aðdraganda Gjálpargossins frá 1996.
„Sem var líka gos úr Bárðarbungu og þá gerðist þetta með svipuðum hætti. Það var búin að vera röð af stórum skjálftum, fimm stiga skjálftum, árið á undan, alveg eins og núna er búið að vera og yfirleitt hefur eldstöðin þagnað eftir að það kemur svoleiðis skjálfti,“ segir Páll og bætir við að það hafi verið eins og sérstakur eiginleiki þeirra skjálfta, að skjálftavirknin hætti eiginlega þegar skjálftinn líður yfir.
„En í eitt skiptið gerðist það ekki. Þá kom svona stór skjálfti og strax á eftir öflug hrina og sú hrina endaði með Gjálpargosinu og þetta er sams konar atburðarás og varð núna í gærkvöldi. Það kom skjálfti upp á 4,8 stig sem var af þessu tagi og í staðinn fyrir að þagna þá kemur þessi öfluga skjálftahrina í kjölfarið og það er óvenjulegt.“
Páll Einarsson, prófessor emeritus í jarðeðlisfræði við Háskóla Íslands.
mbl.is/Hallur Már
Skjálftahrinur ekki algengar
Hann segir að eldgos á þessum slóðum verði að öllum líkindum frekar meinlítil, þó sé aldrei hægt að vera alveg viss.
„Eins og reyndar stóra gosið í Holuhrauni sýndi. Þetta var stærsta gos á Íslandi síðan í Skaftáreldum og tjónið var sáralítið. Það er allt eins víst að næsta gos verði að því leyti tiltölulega tjónlítið en það er aldrei hægt að vera alveg viss því Bárðarbunga er með mjög öfluga stöð og býður upp á margar mismunandi sviðsmyndir fyrir framhaldið af atburðarás.“
Hrinunni sem hófst í gærkvöldi þykir svipa til annarrar hrinu sem varð í öskjunni í janúar í fyrra.
„Þá gerðist eitthvað svipað en ekki samt nákvæmlega eins, ekki beinlínis í kjölfarið á svona stórum skjálfta eins og núna. Þetta minnir meira á aðdraganda Gjálpargossins heldur en sú hrina gerði, hún var vissulega eftirtektarverð enda var send út viðvörun vegna hugsanlegs eldgoss.“
Bætir hann við að skjálftar séu tíðir í Bárðarbungu, stundum stórir og hafa stærstu skjálftarnir undanfarin ár verið þar. Páll segir skjálftahrinur þó ekki eins algengar í eldstöðinni.
„Það hefur ekki verið hennar sérfag að haga sér þannig, þannig að þegar það kemur skjálftahrina í Bárðarbungu er alveg full ástæða til þess að vera á varðbergi.“
„Þetta hefur tekist mjög vel“
Að endingu segir Páll að vert sé að nefna að síðastliðin 50 ár hafi tekist að senda út viðvörun um yfirvofandi eldgos áður en það hefst í 75% tilfella. Hafi þetta hvergi tekist í heiminum með þessum ágætum.
„Þessu er bara aldrei haldið til haga. Það er nánast litið á það sem sjálfsagðan hlut að það sé send út viðvörun áður en gos hefst. Þetta hefur tekist mjög vel.“
Við getum til dæmis litið til Reykjanesskagans, ekkert af þessum tólf gosum sem hafa orðið þar hefur komið okkur algjörlega að óvörum. Það hafa verið sendar út viðvaranir á undan öllum gosunum en það þýðir ekki að við getum spáð fyrir um hvað gerist í næstu viku eða þess háttar.“
Páll bætir við að í öðrum löndum þyki það ágæt frammistaða ef það tekst að senda út viðvörun í 5-10% tilfella.
Read the full article at Morgunblaðið / mbl.is →📄Source document: Icelandic Meteorological Office→11 reports
Morgunblaðið / mbl.isIndependentCenter5 days agoThe flight code over Bárðarbunga has been lowered to green after being raised to yellow yesterday. This was confirmed by meteorologists at the Icelandic Meteorological Office in an interview with mbl.is. The area had shown typical background activity in the solar ring, so the color code was reduced again. A small earthquake was measured at Reykjanes at 3:00 AM this morning, followed by a series of small earthquakes in the evening, but the area has since calmed down.
Bias read (Center): The article reports on seismic activity and changes in the aviation safety color code without taking a stance or showing bias. It provides factual information based on official sources.
Morgunblaðið / mbl.isIndependentCenter6 days ago Hrinan in Bardarbunga was not approvedAn earthquake sequence began in Bárðarbunga on Saturday evening and continued until Monday morning. This was unusual for the area due to the duration of the activity. Magnús Tumi Guðmundsson, a professor of geophysics, commented on the seismic activity, noting that it was significant but not unprecedented. The largest quake measured 4.8 on the Richter scale.
Bias read (Center): The article provides factual information about an earthquake sequence without taking a political stance or showing bias in framing. It includes expert commentary and does not favor any particular viewpoint.
Official sources cited
- statement Magnús Tumi Guðmundsson
Morgunblaðið / mbl.isIndependentCenter7 days ago The full reason for being on guardA professor emeritus in geophysics at the University of Iceland discusses recent seismic activity under Bárðarbunga volcano, noting it is the most significant since the 2014–2015 eruptions at Bárðarbunga and Holuhraun. He suggests the current unrest might be related to the 1996 Gjálp eruption rather than the Holuhraun area.
Bias read (Center): The article focuses on geological activity and expert analysis without political commentary or framing. It provides factual information based on scientific observations and does not take a stance on any political issue.
RÚV FréttirState / PublicCenter7 days agoA strong earthquake occurred at the Bardarbunga volcanic system in Iceland, with over 400 tremors recorded since the activity began. The largest quake measured 4.8 on the Richter scale. No signs of an imminent eruption have been detected yet. Professor Magnus Timi Gudmundsson notes that while this is the strongest seismic event since the end of the last major eruption ten years ago, it does not necessarily indicate an upcoming eruption.
Bias read (Center): The article provides factual information about seismic activity and quotes experts without apparent bias. It focuses on geological data and scientific assessments rather than political implications.
Official sources cited
- statement Magnús Tumi Guðmundsson
VísirIndependentCenter7 days agoApproximately 400 earthquakes were measured during an intense earthquake swarm that began around midnight in Bárðarbunga yesterday, with the largest measuring 4.8 in magnitude. A geophysicist attributes the swarm to tectonic activity related to the power plant. A decision has been made to increase the flight restriction code in the area.
Bias read (Center): The article reports on seismic activity and related decisions without taking a stance or using biased language. It presents factual information and does not favor any particular viewpoint.
RÚV FréttirState / PublicCenter7 days ago The strongest earthquake measured 4.8 – no injuries reportedThe largest earthquake measured 4.8 on the Richter scale during an ongoing seismic activity in Bárðarbunga, Iceland. The Icelandic Meteorological Office reported that around 400 earthquakes have been recorded since the activity began. The seismic activity was strongest around 3 AM but has since decreased. However, it is too early to determine if the activity will subside. The last similar seismic event in the Bárðarbunga area occurred in January of last year. The aviation safety code was raised to yellow, indicating that the volcano is showing signs of activity beyond normal conditions. No eru
Bias read (Center): The article provides factual information about seismic activity and volcanic monitoring without any apparent ideological framing or biased language.
Official sources cited
- government Icelandic Meteorological Office
VísirIndependentCenter7 days ago 250 earthquakes, but no injuriesA series of 250 earthquakes followed a main earthquake measuring 4.8 on the Richter scale, which began late evening. None of these earthquakes resulted in casualties. Between 22:00 and 02:00, 250 earthquakes were recorded, with five of them exceeding magnitude 3.
Bias read (Center): The article provides factual information about seismic activity without any apparent ideological framing or emphasis on political aspects. It focuses solely on the number and magnitude of earthquakes and their outcomes.
RÚV FréttirState / PublicCenter7 days ago One of the most powerful swarms in Bárðarbunga since the 2014 eruptionThe Meteorological Office has raised the aviation warning code for Bárðarbunga to red following a significant earthquake in the northern part of the volcano. The largest quake occurred at 20:14 in the evening with a magnitude of 4.8, followed by around 250 aftershocks, some exceeding magnitude 3. No injuries have been reported. This is the most powerful eruption since the summer of 2014. According to a statement from the Meteorological Office, this event is the strongest since the eruptions between 2014 and 2015.
Bias read (Center): The article provides factual information about an earthquake and volcanic activity without any apparent ideological framing or biased language. It reports on events related to natural phenomena and does not involve political commentary or partisan perspectives.
Official sources cited
- government Veðurstofa (Meteorological Office)
VísirIndependentCenter7 days ago Earthquake in Bárðarbunga of size 4.8Two earthquakes were measured in Bárðarbunga at sizes 2.6 and 4.8 starting around 8 PM. Earthquakes of this magnitude are relatively common in Bárðarbunga, according to the Meteorological Office.
Bias read (Center): The article provides factual information about earthquake measurements without any apparent ideological framing or emphasis. It cites the Meteorological Office as an official source and remains neutral in tone.
Morgunblaðið / mbl.isIndependentCenter7 days ago Bárðarbunga tremorsEarthquakes measuring 2.6 and 4.8 were recorded at Bárðarbunga in the ninth hour tonight.
Bias read (Center): The article reports on seismic activity without any political commentary, framing, or biased language. It simply states the facts about earthquake measurements.
RÚV FréttirState / PublicCenter7 days ago Magnitude 4.8 earthquake near BárðarbungaA magnitude 4.8 earthquake was recorded in Bárðarbunga at 8:14 PM today. Another smaller earthquake of magnitude 2.6 occurred shortly before, at 8:10 PM. Both earthquakes were located in the northern part of Bárðarbunga at depths between 2-4 kilometers. Around 20 aftershocks have been measured. Earthquakes of this size are regularly measured in Bárðarbunga, with the last earthquake over magnitude 5 occurring on January 31 and measuring 5.4. The image shows where the earthquake originated.
Bias read (Center): The article provides factual information about seismic activity without any political commentary, framing, or biased language. It focuses solely on the technical details of the earthquakes and their measurements.
Official sources cited
- government Veðurstofa Íslands
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