This post will most likely be updated fairly quickly as news come up and we get more information.
It seems like Mt Tongariros awaited eruption has started. The eruption seems to be generated out of the Te Mari Craters. Witnesses report an ash column that exceeds 6 000 meters with steady lightning. There are also reports of lava bombs or incandescent lava slabs being ejected from the volcanic vent located on the side of the mountain. That witnesses talk about a hole in the side of the mountain points towards a new crater in the Te Mari crater-area.
Tongariro is a part of the Taupo volcanic belt. It is one of the most prolific volcanoes in New Zeeland. The last eruption was in 1977. During the last 115 years it has erupted 49 times through the southern crater complex, Ngauruhoe, while the Te Mari crater has been dormant. The Eruption follows magmatic emplacements during 2006 and 2009 and increased activity during the last few weeks.
The Ngauruhoe eruptions have been moderately explosive with only 3 eruptions ranging VEI-3; the others have been predominantly VEI-2 eruptions with just a few being even smaller. 550 BC there was the last larger eruption, a VEI-5 out of Ngauruhoe crater. The last VEI-5 out of Te Mari crater was 9350 BC.
There is currently nothing pointing towards this eruption going to exceed a VEI-3 eruption. One should though note that eruptions from previously semi-dormant craters in a complex andesitic volcano can be livelier than the previous eruptions from a well used crater part.
The amount of activity and height of initial ash column seems to point more towards a small VEI-3 than a VEI-2. So there is some cause for concern for those who live close by.
This post will be updated as soon as we get more news. For latest news we recommend that you follow the comment thread. Expect that there will be a call for evacuation of locals soon.
CARL
Update:
Radio New Zealand News ( pointed out by IngeB )
Again another page on Radio NZ News
Bay of Plenty Times
GeoNet NZ Tongariro Activity
GeoNet NZ Seismometers called Drums
.
Webcam Tongariro
Other webcams listed, all are in Tongariro National park
One can watch a diashow of the “Rivercam” here.
GeoNet informations on Tongariro
Skiing the pacific “ring of fire” and beyond
Tongariro Alpine Crossing.
Wikipedia Tongariro
Weekly Activity report Smithsonian
GVP Tongariro
Claude Grandpey on Tongario today!
And last but not least Erik Klemtti on Eruptions about this event.
Update by Spica
Hi ok i ll kick myself into oblivion now!!!
here it goes.
http://www.radionz.co.nz/news/national/112587/tongariro-erupts,-threat-warning-issued
http://www.bayofplentytimes.co.nz/news/mt-tongariro-erupts-alert-level-raised/1495074/
http://www.geonet.org.nz/volcano/activity/tongariro/
http://www.tourism.net.nz/region/ruapehu/ruapehu—tongariro-national-park/visitor-information/web-cams/other-listings/
http://bildersammlung.ch/tongariro-river-webcam-live-wetter-webcam-tongariro-river-live-cam-panorama-neuseeland/webcam.php ( diashow
http://www.civildefence.govt.nz/
http://www.geonet.org.nz/volcano/our-volcanoes/tongariro.html
http://www.skimountaineer.com/ROF/ROF.php?name=Tongariro
http://www.tongarirocrossing.org.nz/
The good thing about being a dragon is… you can drag yourself out again 🙂 !!!
Oh dear God!!!
That was a whale of links…
Feel free to add it to the post. Please!
I am totally and officially Schtumped.
Spica, ich liebe dich!!
ok, free beer then.
lol
Post updated!
Thank you. The links are clearer now; appreciated 🙂
Meh?
Why would you kick yourself?
*Hurredly un-kicking Spica and placing a soft pillow on the Chair*
Those are all the links i could find in 15 minutes.
You are wonderful, but… How on earth???
Schtill Schtumped!
Shall i update the post and edit them all in? ( But with discriptions which are linked not the links itself, Yes No?
Yes!
I am a greedy Dragon today 🙂
SWEEEEEEEEEEEEEEEEEEEET list of link. How on earth did you do all that in 15 minutes? *Scheverely Schtumped*
A webcan for Tongariro (but you can’t see much on it at the moment):
& from TVNZ:
http://tvnz.co.nz/national-news/flame-like-explosions-mount-tongariro-erupts-5009957
Image of MTSAT satellite which seems to show a plume at 13h UTC. The emission of a single plume :
Animation : http://mscweb.kishou.go.jp/sat_dat/img/reg/sat_img.htm
You’ve always been “éminente en decouvrir des caches d’information excellent”, but I think that today you’ve been matched by Spica!
Meanwhile now the sun’s up in NZ … the White Island webcams show a plume of white smoke/ash/steam.
The spectrogram looks interesting:
http://www.geonet.org.nz/volcano/activity/white-island/rsam-ssam.html
It does, but white island is far away from Tongariro. Claude noticed that the alert level was raised there too. I had that in the last post.
It is far away from Tongariro – but it is still erupting. 🙂
Also worth looking at the differences in the seismographs and spectrograms between the eruptions.
Yeah, links to white island on the last post.
Interesting colours on the 07:30 image:
Etna also has a glow. HT is rising, but is stil low.
http://www.radiostudio7.it/webcam.asp?web=2&id=2
http://lave.geolinfo.eu/webcams_etna.php?numero=2
Also: http://www.etnawalk.it/Gallery/Show/188/southeast-crater–live-/2861#
Dragons watch out 997,207 views. We could reach the million tomorow!
But i ll pass, BBGN!
BBGN! Shleep well!
I guess we will pass that one between 4 tonight and 6 in the morning (Blog Time).
Since two major volcanoes are erupting in New Zealand I think we should have a rather juicy background for what is happening tomorrow.
So if there is not a lot of important new, there will be something really beefy tomorrow from a Mysterious Writer.
A new riddle? Guess the writer 🙂
Mystery writer? Or a writer of mysteries? J.K. Rowling or Dan Brown! 😉 😀
The aviation colour code for Tongariro has been raised to red.
Yes, some flights have been cancelled:
http://tvnz.co.nz/national-news/flame-like-explosions-mount-tongariro-erupts-5009957
Pix
http://tvnz.co.nz/national-news/flame-like-explosions-mount-tongariro-erupts-5009957/photos
White island, Tongariro, Ngauruhoe and Ruapehu are part of the Kermadec – Collville Ridges by molten rock rising above the deeply diving Pacific Plate. The trough continues ashore into the Rotorua–Taupō area of New Zealand, where the land is also being stretched. You can see the Ash clouds also on the cams from Ngauruhoe and Ruapehu on http://www.geonet.org.nz/volcano/activity/ruapehu/ being further away it is amazing to see
Shameless plug.
This is a plot I did of 3 years of quakes (2009 to 2012) for the Tongariro, Ngauruhoe and Ruapehu area.
On the second rotation I opened the depth up to 250 km so you can see the descending slab that feeds the volcanic systems as it melts.
Very nice! It immediately reminds me of illustrations made to explain subduction melting such as this one – http://mabryonline.org/blogs/woolsey/images/subduction3-2.jpg Fantastic to see it “in real life” as it is!
According to the VAAC Wellington 20120806/1820Z report, the ashcloud went to FL200. That’s about 6.096 km and equates to a DRE rate of just under 131m³/s (Mastin et al) to 188 m³/s (Sparks)
Not an extremely lively eruption.
From the drum recordings, the festivity seems to have been short lived.
And a look at what data I can find in lieu of actual imagery.
Very useful image, perhaps a helpful dragon might add it to the post in a forthcoming update?
It is comming today.
nice one Lurk,
it should be noted that the wind was not headed towards highway 46 which lies to the north, but towards the Desert Road to the east. I suspect the report of 5 cm is highly exaggerated.
And this was quite fittingly view number 1 million!
Congratulations to Lurking to making the numero 1 million view into a plot!
Most Fitting!
Congratulations from Volcano Café!
there could possibly be a lahar since it is winter and we there has been a ‘bit ‘of snow around, it looks a bit of cough ans splatter, time will tell
Looks like it might be multiple vents.
http://www.bayofplentytimes.co.nz/photos/mt-tongariro-eruption/13835/#num=1&id=mt-tongariro-eruption
Found sneaking around WUWT
“Update: GNS, New Zealand’s monitoring agency says the eruption seems to be a steam driven event not magma.”
If thats the case, this was a phreatic event. (water flashing to steam)
That would mean that the temperature somewhere above 2.5 km deep has risen above the steam formation temperature. Below about 2.5 km, the hydrostatic pressure keeps it from flashing to steam. (not exact, but pretty #### close)
that would explain the multiple vents.
what about the lightening ?
Doesn’t stop the lightning or the ash. Think “Maar”
It’s an eruption either way, just steam driven.
Essentially, it means that the main show could be yet to come.
Note, I don’t intend to infer that this is a Maar, just that the driving mechanism is pretty much the same. Maars can spit out quite a bit of mobilized ash/rock, and with that you get lightning.
Given the VAAC warning height, and the amount of DRE equivalent, it was a pretty significant event… for being steam powered. Since it is likely a steam event… the DRE calcs are probably gonna be a bit off… to the high side.
It still takes a lot of energy to break up that much material and loft it that high.
Yes, it is quite common for andesitic volcanoes to start with a steam eruption. And, it is often indicative of the size of the upcoming eruption.
It was judging from this that I estimated an upcoming VEI-3 event together with level of harmonic tremor and earthquakes. Problem is just that I am not good at the behaviour of NZ volcanoes.
Thanks Lurk and others for the links, i ll add them tonight ( work calls) and place the plot on the special plot page.
998,917 unique views
Oh and Sissel the stone is here, i ll check for Cocoliths hopefully today.
Good it arrived. I’ll send you pictures “before and after smashing”.
BTW, Eruptions posted a satellite view of the plume… it looks to line up directly with the FL200 drop point.
Stupid question what is the FL200 drop point?
My 22:38 post has a graphic using Goog earth. In it is a scaled FL200 note at the correct distance from the grount for that elevation. There is a drop line from it to the surface that pretty much nails where the satellite image of the plume originates.
20 000 feet.
New Zealand’s Mt Tongariro erupts, ash cloud causes disruptionsRead more: http://www.news.com.au/travel/news/new-zealands-mt-tongariro-erupts/story-e6frfq80-1226444411707#ixzz22pxerOEZ
To give you an idea of the locality, here is a slide show of pics I took from the desert road from the direction where most of the ash fell. They are not very informative pics I am afraid as Tongariro was covered in cloud, but it might give you an idea of the distances involved. The first two photos are towards Tongariro and the last ones towards Ruapehu:
ugh. Dragons, please correct that first sentence above to read: To give you an idea…
right, coffee is needed.
Done by volcanocafe2 dragon. Please enjoy your coffee!
PS these are OLD photos, not from yesterday’s eruption.
Wow Spica! That was fast. I think you deserve an Olympic Gold for rooting out links! Thanks for a good. informative post Carl.
Good morning, and G’day especially to any Kiwis who may join us today.Here is a good resume of the situation as it stands in New Zealand this morning.
Stay Safe to our Kiwi friends in the area around the volcano and be careful of that Ash! It really is bad stuff to breath in! It may be worth wearing masks, like the Japanese do, if you are in an ashy area.
Whilst we are waiting for the next, or even a main event, Volcanically, Google has a cute little time- waster to play with this morning.
https://www.google.com/doodles/hurdles-2012
Game wise it is on a par with Google translation service.
Re. ashfall:
After my experience with it in Iceland: It helps, if you are in the direction of ashfall, to tape the windowframes with broadband tape. Does perhaps not keep all of it away, but prevents some of the fine ash from entering – and this seems to be andesitic, so rather fine ash like the one of Eyjafjallajökull two years ago.
Stay safe, and better be indoors, that’s really good advice.
🙂
I think I am in need of some more coffee:
Intended to say: “prevents some of the fine ash from entering” — ähm — hope this is understandable … 😳
Comment above edited by volcanocafe2 dragon. Please enjoy your coffee!
@Diana:
Hi, good to hear from you again. How is your appetite re. chocolate cake? Back again? 🙂
Hi Inge. Thank you for asking. I am now well into chocolate cake again although I am supposed to be cutting down. 😳
As I have an over-abundance of courgettes on my veggie patch I am churning out Lemon Courgette cakes on a regular basis at the moment. They are almost yummier than chocolate cake but I have convinced myself as they are heavily vegetable based they are very good for you!!!!
😆
Morning Everyone and I echo Diana’s statement to our Kiwi friends.
El Hierro has seen 2 earthquakes already today one at only 10km deep.
1160062 07/08/2012 01:18:53 27.7403 -18.0426 10 1.2 4 SW FRONTERA.IHI [+] info
1160077 07/08/2012 05:20:31 27.7029 -18.1583 20 1.8 4 SW FRONTERA.IHI [+] info
http://www.ign.es/ign/layoutIn/volcaListadoCatalogoVer.do
This page by New Zealand television has been updated and is sporting an interesting posteruption video of Tonagariro:
http://tvnz.co.nz/national-news/flame-like-explosions-mount-tongariro-erupts-5009957
Some information about New Zealand’s volcanic systems:
http://www.teara.govt.nz/en/volcanoes
and
http://data.gns.cri.nz/af/index.jsp
The Restingolitas from El Hierro’s eruption last November has 6 times the normal concentration of the two radioactive elements Thorium and Uran, they are not known in another lava or rock formation in the Canaries or most likely the world, according to chemical and radiology analysis.
I translated this info from Manfred’s website (german) http://elhierro1.blogspot.com.au/
To my surprise, the radioactive concentration is found in the white (center) part of the Restingolitas. Until now I thought the white part consisted of sediments from the seafloor. But wasn’t it stated that magma containing these radioactive elements has a very deep origin?
Here’s the most recent VAG (volcanic ash graphic) from Wellington VAAC (then-current position and forecast positions). Cloud now dispersing but climbing.
http://vaac.metservice.com/vag/0401-08-2012_5
psotion? No coffee yet. Position!
Comment above edited by volcanocafe2 dragon. Please enjoy your coffee!
Thank you so much, your dragon-ness! Coffee is the best cure for the early morning ‘finger-farts’. Doesn’t work quite so well on the late-night beer-posts though!
There is an image prepared for later 12 views to go for the million. Could you bring it in Carl?
Yes I can do that:)
A local resident is reported as saying she has seen three new craters:
“Bennett’s wife Robyn said she had not been able to sleep last night following the spectacular eruption.
“It looked like a huge mushroom cloud. There’s a very strong sulphur smell in the air and it was very hard to breathe last night.”
Robyn Bennett said she and her husband could still hear the mountain rumbling from their home this morning.
“The ash plume is rolling down the side of the mountain. I feel safe and I am not leaving.”
Robyn Bennett said if the mountain did blow “our house will be in the middle of it. The lava flow will come down the valley towards us.”
She could see three new vents from her home.
“They each look to be the size of the Ketetahi Springs.””
http://www.stuff.co.nz/national/7426862/First-Tongariro-eruption-in-over-100-years
Sadly, it sounds like she will be among the first hit if (more like when) a pyroclastic cloud comes down the valley when the real eruption starts.
I hope they will have an evacuation of the adjacent valleys soon.
I agree with Lurking above, this was most likely just the opening stages as water exploded out. The main event has not even started yet.
Aaaand, we are over a million: 1000041 views just now. 🙂
Lurking was the 1 millionth viewer. He became that as he posted the above plot. At least if I am not entirely mistaken. (Might have been someone totally unknown, but the time seems to be correct).
That seems totally appropriate. 😀 😀 😀
Congrats, btw you have 1 too many zeros there 😉
– had, or my ‘puter can’t spell numbers anymore….
Congratulations Volcanocafe! Way to go! Yipeeee! Woooo Hoooo!
Ash fall: I had considerable ashfall when Grimsvotn erupted last year. Even being 200km away from the volcano. This was because wind directly brought ash in my direction. But other than the ash scratching your lungs and irritate your eyes and teeth, its not a big problem. Unless it is high in fluoride (toxic for animal fodder or your vegetable garden). It does help to close windows not to let ash enter your house. The rain is the blessing: it does clean the air and surfaces, so I always enjoy a good rain after the ash has been blowing with dry weather. 1 year later I don´t worry with ash fall from volcanoes unless they erupt right next to my house.
But it might be a problem for children, esp. the little ones which are next to the ground, for elderly people, people with respiratory problems (also asthma and allergies) as well as people with heart deseases. They should try to avoid volcanic ash and ashfall. 😦
Some news:
I spent the last days at Carl’s favourite volcano: Hengill, also its small neighbour Hrómundartindur, the southern end of Langjokull. And then also at Snaefellsjokull, Lysyholl and Ljósfjoll.
I found many soil ash profiles. I have now so much to look at.
What I found is interesting: Snaefellsjokull did had large ash eruptions in the past, which cover a signficant part of Iceland with white pumice. I found Snaefellsjokull white ash as far away as Thingvellir and I still don’t know if some of my former white bands could have been from it rather than Hekla. Its slopes, like Hekla, Askja and Oraefajokull, have large amounts of pumice from its past eruptions.
One paper that Geolurking sent me, actually had stated that Snaefellsjokull did in fact had large ash eruptions in its past that were until now unknown. And this is worrying because it is a large and still active stratosvolcano, as large and apparently as explosive as Hekla.
I also found what might be local ash from Hengill but I am unsure about it. Hrómundartindur did had an eruption in recent millenia, there is at least one lava field at its base, with an age I estimate in 2000-3000 years old, so quite recent. There is also geothermal springs at its slopes just like at its neighbour Hengill. However, to distinguish both volcanoes is subjective, there is a lot of what could be volcanic systems in the area. For example, further north, we found the fissures, craters and ridges south of Langjokull, which are probably an independent volcano of its own (last eruption there about 4000 years ago).
Finally,near Snaefellsjokull there are two other active volcanic systems, Ljósfjoll and Lysholl, which have lava fields from recent millenia, and I think they might also had rhyolite ash from them.
So, lots of less known and studies Icelandic volcanoes!
But Snaefellsjökull is one of the most famous Icelandic volcanoes (Jules Verne!). He is not unknown at all.
Also is he known as one of the – not many – Icelandic stratovolcanoes. And one which covered the west of Iceland not only once in ash (last eruption around 1750 years ago – so long before settlement started in Iceland).
It’s also because of it that Haraldur Sigurdsson asked repeatedly about better SIL covering for Snaefellsnes, but also because of Ljósufjöll another active volcanic system on Snaefellsnes peninsula, with last eruptions around time of settlement (10th cent.).http://vulkan.blog.is/blog/vulkan/entry/1234877/
There was some research done at Snaefellsjökull lately by students from Germany who discovered some small earthquakes series. They were in a depth of 9-13 m, and a lot of them in 28 m depth. Data – sadly – had to be taken out of the net.
http://vulkan.blog.is/blog/vulkan/entry/1235214/
🙂
Furthermore, to Ursula and Renato, and on the 1258 mysterious volcanic eruption. Well, I agree that I have one or two thick white ash layers between both the 1477 Veidivotn and 870 Settlement ash layers. It might be one of them. Hekla erupted around those centuries but not near 1258. Neither Katla. We might have an unknown eruption of Askja or even more strangely from Snaefellsjokull. I found out really thick white layers from Snaefellsjokull, several ones, near the volcano and as I travelled away from it, decreasing in thickness, proving they are from Snaefellsjokull and not Hekla (at least some white layers). So now I am lost with a puzzle to figure out the identity and age of all these white layers, which might have originated from either Hekla, Snaefellsjokull, Askja and even Oraefajokull.
I did not post yet, but I found a profile neaby, which is way better than the one from part I and part II, that shows plenty white ash layers, really many of them. And other spectacular profiles obtained near Snaefellsjokull.
Not that I want to claim the source for the 1258 event in Iceland. Because Iceland being settled at that time, an eruption would have been noticed and recorded. Hence, the mystery. I believe that most likely the eruption happened somewhere without people around. And therefore I doubt it might have happened in Iceland, but I do have bands around that time from Iceland, and I am unsure about where they came from (but my guess is Hekla and from other years: 1341 and 1104)
This research article might help with Snaefellsjökull dating: http://oceanrep.geomar.de/5935/
🙂
New post is up!
https://volcanocafe.wordpress.com/2012/08/07/eruptions-at-tongariro-whaakari-white-island-and-1-million-viewers/
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