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95464
From: ao, [DNS_Address]
Subject: Kilauea Summit Eruption Over? Paused? Not erupting at this time..
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Late yesterday morning the summit, as measured by a tilt meter and plotted above*, started deflating at a rate that was a little greater than it's daily fluctuations. In the first 24 hours this amounted to three microradians as the decline began to taper off.. and now is relatively flat. This is not a lot by any stretch, but, as you can see in the plot, is a greater change than we've been experiencing lately. Between four and five hours after the onset of deflation the tremor associated with the summit eruption died back to what is background noise hereabouts.. and there is no other seismic activity. This entire event has been aseismic. The eruption site is covered in a thick layer of fog. But still the infrared camera has been recording activity in the lake until sometime in the early hours of this morning. Ever since the lava lake has appeared crusted over, and the tempetures being recorded have dropped off significantly. Though this is hard to interpret because the heat is coming through thick fog. None the less the crust of the pond has been immobile since this morning. With that much info it's seems reasonable to conclude the eruption has at least taken a break.. *note that the plot above is dynamic.. ie.. live.. updated every 10 minutes or so. So the data will change as time goes by.. |
95469
From: Redhart, [DNS_Address]
Subject: Re: Kilauea Summit Eruption Over? Paused? Not erupting at this time..
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or... the magma is on the move to somewhere else. Good to keep an eye on this. Thanks, ao |
95472
From: ao, [DNS_Address]
Subject: Re: Kilauea Summit Eruption Over? Paused? Not erupting at this time..
URL: Episodic Deflation–Inflation Events at Kīlauea Volcano and Implications for the Shallow Magma System
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Hey Redhart.. The mountain is unusually quiet at the moment.. ie no seismic noise.. few earthquakes.. and barely any tremor (though it's picking up slightly with the change in tilt noted below) so it's hard to imagine the magma is going anywhere.. My take is it looks more like a bubble in the system.. some gap in the delivery.. a burp. The question is does the roof.. the surface.. solidify enough before more magma flows so as to force it to accumulate underground or does the next batch of magma push what little has turned to stone aside and the eruption resumes.. we'll probably know soon in that as of a few hours ago the mountain started to inflate again.. look at the plot on my original post to see this.. We have pauses.. and we also have events we refer to as DI events.. short for Deflation Inflation Event... and I'm thinking this is one of either.. something associated with the shallow movement of magma from one chamber to another.. very local to the summit. To understand Kilauea's DI events try reading the paper at the link above.. |
Responses:
[95481]
95481
From: ao, [DNS_Address]
Subject: Re: Kilauea Summit Eruption resumed late Monday afternoon..
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All indications are the eruption at Kilauea's summit resumed about 4 local time yesterday, Monday, afternoon.. Anyone keeping track understands that the islands had a pretty serious weather system come through yesterday.. as such things have been a bit spotty.. local wireless telemetry can get fickle at times with that much wind and rain. But all indications.. between the tilt rebounding, tremor resuming, and an occasional peek with the remote cameras.. are that the eruption is back in full force. Which, admittedly, ain't much but a bit of lava pooling in the crater.. current pics at the link above.. |
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