Argyllcraig

Jon is reporting a lot of activity in Katla tonight. Harmonic tremors are continuing to increase this evening following earlier earthquake swarms. From Jon's blog: When this is written around 00:36 UTC on 9. July 2011 the harmonic tremor levels on SIL stations around Katla volcano have continued to increase. The latest spike in harmonic tremor levels happened after an ML1.5 (automatic size) earthquake that took place at 22:13 UTC. There has been an small earthquake swarm in Katla volcano caldera yesterday. But the largest earthquake in that earthquake swarm had the size ML2.4. The harmonic levels are getting so strong that they have started to appear on stations around Hekla and on my own geophone, even if it is located almost 60 km away from the source of the harmonic tremor. Currently there is little to suggests that this is slowing down at the moment. But that might yet happen. But it is impossible to know for sure at the moment. The lack of earthquakes tells me that the magma has not yet reached the surface. When or if that might happen is an good question that I do not have the answer to. But this might take several more hours until something happens in terms of earthquakes or other activity in Katla volcano. Harmonic tremor can clearly be seen on this SIL station at the end of the tremor chart. This is saved around 00:36 UTC 9. July 2011. Copyright of this picture belongs to Icelandic Met Office. As sad before the harmonic tremor can now be seen on SIL stations far away from Katla volcano. But the maximum range so far is around 65 km or so at the moment. This is the last update for tonight. I am going post an update tomorrow on what has happened during the night. Even just to say people that things have slowed down or gone back to normal. Whatever happens. I am going to post information about it tomorrow when I awake up.

Its an Infra red overlay of the eruption.. amazing to see the lava to the north west

There are some bits and bobs out regarding Nabro albeit most is satelite imagery due to the difficulty in getting people on the ground. Nabro sat Pic... Infra-red enhanced

The quakes are quite often removed or replaced as a result of human interpretation

Can see the plume from Nabro today... causing problems for regional air routes as the plume was reported as high as 35000 feet. MODIS terra link Soz Red Raven... i see you have already posted the sat24 run Sat Plume image

Could have sworn this was the volcanic thread

Ah the good old ring of fire.... its always an active watch

Interesting update on Jon Frimann's blog... (anyone unfamiliar, he runs a very good blog on all things Iceland... well worth checking from time to time) He's highlighted activity from Katla.. looking at what he has posted it appears that katla is experiencing low level harmonic tremors at quite a depth beneath Katla and possibly from within the volcanic system itself. This would suggest that magma is moving into or around the chamber system but as Jon himself stresses this does not in itself represent a possible eruption event soon however it does signal possibly a more active phase in the volcano. Lots of possibles and maybes but worth keeping a wee eye on. http://www.jonfr.com/volcano/

Sorry about the American samoa... saw it on ABC news on my phone app, looked for it this morning and its an old news story.

Appears American samoa was struck by a tsunami also as a result of the activity in the pacific... some dramatic aftermath scenes showing a lot of flooding

Penkridge does seem to get some cracking storms.. i remember the day a giant cell spawned about 4 tornado's and funnel cloud, with the hockey centre towards Cannock getting a battering. I think that must have been about 8 years ago now, was something to see especially the lightening that day.

It weird looking at the loyalty islands tremors.... at the start of 2011 we would have viewed a 7.1 as a major event anywhere in the world, oh how our perception has changed since. It may well be that the 7.1 is the release for the area and that what is happening is the aftershocks normally associated with a big quake.

Hearing this morning that Tepco are planning to dump the radio active water they currently have in storage into the pacific to make room for more water they are pouring on the plant. I've admittedly not read the whole story but find it a bit worrying that they may be about to dump the waste water. Maybe someone with a bit more knowledge can perhaps explain the negs or positives of this but i do recall outcries in the north of Scotland when Dounreay had accidental leaks and discharges into the sea. What would normally happen with the coolant fresh water at such sites? is it not normally held in permanent storage too along with the fuel?

its not really a question of sunrise and sunset though.... daylight hours are longer than the actual rising and setting of the sun. Its bad enough in the summer having only a couple of hours of almost darkness at night which is awful for sleep and in the winter to have daylight not occur until around 9.30am would be so depressing and even worse for areas in the mountains and north of the central belt where villages sitting in the shade of the hills pretty much get no sun anyway. As for doing more in the evening.... why would u want to do more than sit out after 10pm?

Yes this is being reported as the case. I think the boxing day tsunami and earthquake did something similar.

Mag 6 quakes do happen quite frequently, the last fortnight has seen between 1 and 6 quakes of this size on any given day and not all linked to the area off east Japan. Earthquakes of mag 6 and above however tend to take years to build up the stresses involved in that size of quake and im not sure how a passing phase of the moon would influence what was going to take place anyway.

Honolulu has been having earthquakes recently this is mainly due to a spike in ongoing volcanic activity on the islands and the eruption on the kamoamoa fissure.

The dead fish? im assuming you mean the sardines in the states? Im pretty sure that was due to a lack of oxygen after the sardines flooded a small harbour after being chased inshore. Never know though. The last year has been interesting. Volcanology is more my area of interest and certainly here we saw a large number of eruptions particularly in the latter part of the year so for sure things have been quite active recently.

Are the times for the arrival of the Tsunami in GMT times?

This really looks like a monster quake at a fairly shallow depth too, seems the aftershocks also are coming in at over 7 on the richter scale. The Tsunami's look aweful and shocking in the way they are just sweeping everything away! While the north east looks to have been hit badly it appears much of the country may have been affected to some degree. Much of the pacific now is on alert

As someone who mountaineers i have to allow for magnetic variation...... nothing new, depending on the age of the map determines how many degrees the magnetic pole has moved.

Scottish snowline depends on the time of year too. In general from nov to april its probably around the 600m level or roughly 1800-2000feet. As a consequence this where most of the ski resorts can be found. As for Ben Nevis, well its snow free pretty much every year barring a couple of snow patches that sometimes hang on around the northface in the shade from the huge cliffs.

Seems things are starting to calm down on the Reykjanes ridge this morning with the earthquakes subsiding. So far there have been over 800 quakes around Krisuvik volcano with several over mag 3 with the strongest being around 4.1 which was felt in the capital. Whilst not entirely unusual for this area, the shear focus and ongoing nature of the seismic activity could signal magma moving within the fracture zone. will be worth keeping a eye on to see how it develops or whether things continue to quieten down.

Indeed Coldfingers, the local press in Reykjavik has been reporting the tremors and that the land has visibly moved in places along the ridge. It will be interesting to see if an eruption takes place as has been noted the last eruption was around the 13th or 14th century i believe. i for one will certainly be stuck viewing the data coming through for a wee while

A great deal of activity in Iceland again at the moment. With over 400 earthquakes under the Krisuvik volcano there certainly seems to be something a foot! Activity here has been high over the last week but the last 24 hours has seen things really step up a notch. one of the best sources for info is a local blogger at http://www.jonfr.com/volcano/ Suggests that an eruptive phase may well be under way as this is symptomatic of magma pressure building below the crust, if an eruption does occur then its likely to be similar to Kilauea in Hawaii. http://en.vedur.is/earthquakes-and-volcanism/earthquakes/reykjanesridge/