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Thread: CotoPaxi Volcano - Ecuador seismic status

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Eruption which started near 1600 continued thru the nite, mostly stopping with strong continued instability being noted in the seismographic 0900-1000 am local this morning:






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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Eruption continued through the night - started diminishing 0400-0600 am local time -


    By 0800 am local time, the intensity had dropped to continual high frequency vibration.. quite different than in previous days. This type of pattern has been seen before on the volcanoes during periods of regional instability (stress build-up in the subterranean rock strata).


    You can see in the Tungurahua volcano, quite to the south of CotoPaxi, the spikey, plus pulse activity periods also happening during the late evening and early morning hours:


    As the early morning sun rose, the large double pulsing in Tungurahua started to diminish, BUT there was an increase in HIGH frequency activity ALSO in the Tungurahua volcano:


    Something to keep an eye on today this Friday the 13th..

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Looking at the afternoon seismic graphics of both volcanoes, the 6 hour cycle appears to be present again.. Cotopaxi calmed down slightly, but started activity again around 1600 pm local, and Tungurahua did the same although some explosive events were 45 minute sooner.. Could be something up South of Ecuador is moving around deep..

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    A large 6.7 quake struck in the upper NW of Ecuador near where the 7.8 occurred - using the Tungurahua seismographic to show this and the vibration prior:


    0258 local at the seismograph starts the event

    it lasts for about 7 minutes and then 3 minutes later another pulse lasting 2 minutes

    and

    then 4 minutes later a smaller pulse.


    6 minutes later a much smaller pulse which lasted for two minutes.

    -----------

    Prior to the quake event at about 01:45 am local there was a "triple" pulse event which was odd (haven't seen that before except during eruptions), followed by about 12 minutes afterwards, a very sharp and abrupt "spike" pulse - that was the sequence immediately before.

    ----------

    North of Tungurahua, up at CotoPaxi, both seismic events and eruptive activity was happening:

    Slow-wave (hard to see) starting at 1940 pm local time. At 2021 pm local time eruptive activity picked back up.

    The large seismic event (the quake) can be seen mixed in (increased spikey activity) with the eruptive activity prior to 0300 am local time.

    Last edited by Bob; 18th May 2016 at 14:23.

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Up on the ring of fire, up on the NW coast of the US, the event can be seen on two (selected) of the seismographs there (Mt. Hood).

    It is interesting understanding the "connectedness". And seeing it for oneself on sensitive equipment. (we are told by 'experts' the volcanoes on the ring of fire don't see each other's activity.. hmm)


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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    The second quake as seen on the Tungurahua seismographic followed by the CotoPaxi seismographic - (BTW, there is a feeling of a low rumble, like a big truck passing in an elevated carpark, that type of low frequency rumble. My cats are a bit freaked out..


    You can see the quake and an aftershock(?) or a large event in the CotoPaxi volcano afterwards as well:


    This seismographic gives us good detail of what's happening in the north of Ecuador (as well).

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Continued activity from the last post (18th) till last nite, cycling mostly during the night, diminishing during the day..

    This is the current set of seismographics :




    Spikey activity (rock breaking), and explosive events are able to be seen. Eruptive events are minimal at the moment.

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Large seismic events noted:






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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    After the large series of seismic events regionally, the eruptive events at CotoPaxi appear to have shifted from a night-time cycle to a daytime cycle.

    This switching appeared to have started a few days ago. Coincidental maybe, but there has been a change in solar particle stream energy level directed earthward. (see the coronal hole thread in the solar activity reports part of the website for details).

    Yesterday evening/last night:


    Today:


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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Continued pattern of cycle switch with CotoPaxi - although there were a few night time events, the pattern of events appears to be now running on the daytime cycle.

    Night seismic monitor graph:


    Day seismic monitor graph:


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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    The switch in cycles happened again with CotoPaxi - starting on the 8th, right after a large regional quake (1530),


    and during the night


    and into today


    The seismic pulse pattern output started to take on a regular sputtering emission for about an hour, around 0700 local time.

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Eruptive pattern continues in the night-time cycle with brief 2-3 hours of "off time" during the daytime, usually the afternoon before resuming at night.

    A strong seismic pulse was noted shortly after midnight local time which lasted for 1/2 a minute of increased rumbling activity.


    After the "pulse" the recording network went OFFLINE.
    Last edited by Bob; 15th June 2016 at 16:42.

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Background seismic activity remains high despite the cycling appearing (night-time eruptive activity, diminishing by morning, and resuming as the sun goes down...)

    Large seismic events have been picked up in both CotoPaxi's seismic monitors and Tungurahua volcano's seismic monitors at apx 1036am local.

    Background microseismic events monitored on the Tungurahua's seismic monitors at the moment remains LOW.


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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    1400-1600 hours local time today (see post above for the seismic graphic), the eruptive pattern took a stronger emission pattern, which then subsided to a moderately low level of seismic micro-tremor. Microtremor as of this posting is still remaining constant.


    We're loading this camera image to see if an eruption during the night becomes visible:


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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Hokkaido has just had a sizeable quake M5+ - (waiting for it to show up on USGS) - is likely to bounce across to your side Bob/Bill

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Quote Posted by Bob (here)



    This is very cool: it's a live webcam feed. I didn't know one could embed something like that. It's an animated gif, and cycles around in stop motion... but it's regularly updated. Yesterday evening, the image was pitch black, because it was night.

    What that means is that if the whole thing blows to h***, we'll see it live on the forum here.

    (This is not just a joke: I did hear, off-record, 6 months ago, from someone who knew someone in the Ecuador gov't, that they are '100% certain' of a major eruption, timescale not known.)
    Last edited by Bill Ryan; 16th June 2016 at 15:54.

  17. The Following 4 Users Say Thank You to Bill Ryan For This Post:

    avid (16th June 2016), Bob (16th June 2016), kerrielea (16th June 2016), KiwiElf (16th June 2016)

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    The animated gif stop motion camera feeds are good. Many of the cameras field of view will be showing the clouds, depending on the season, such are heavier/lower.. What I have seen many times close to sundown, or just shortly thereafter, the clouds will drop away.

    I'm watching the cyclic changes on the volcanoes hopefully getting a partial underground 'visual' of what is happening.

    Current morning/afternoon seismic graphic:


    Slowly, after the event yesterday. 1400-1600 hours, the seismic signals started to show less micro-tremor. We can watch to see if the cyclic period picks up during the day and night.

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    In the post above around 1600 hours local, very small low amplitude periods of slow wave were noted. Slow-wave generally is indicative of magma movement. Today throughout the day from 0900 local time onwards, more slow-wave signals were noted, albeit quite small. The low amplitude values could be due to the particular location that the seismic recorder sensor is located is not directly near a magma pipe.


    Tungurahua to the south is showing continual "noisy" activity, but with minimal rock break signatures.

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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Both volcano's seismic recording sensors are continuing to report "noise" (low level microseismic activity) in cycles. CotoPaxi continues to show small slow-wave periods intermixed with high frequency activity.

    There was a 4.5m seismic event (earthquake) which was 4 kilometers deep near the town of MANTA in Ecuador on the coast. This event appeared on both seismic recorders, but appeared stronger in the south, on Tungurahua's monitor.


    Tungurahua:


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    Default Re: CotoPaxi Volcano - Ecuador seismic status

    Brief update - have been watching the seismographics continually since the last post - everything is going 'relatively' quiet.

    Except for a brief now and then 'pulse', or a regional seismic event being recorded (read 'earthquake') by the volcano's seismographs.

    We're still following and will show noteworthy events..


    brief sharp spikes (rock breaks) have appeared and then "quiet".

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