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Stephen Hicks
& what they reveal about our planet. imaging tectonic plates & quakes . email: s.hicks@ic.ac.uk 🚴🧗🏃
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Stephen Hicks retweeted
Susan Hough 4h
Let’s talk about tsunami hazards in the Caribbean. The Caribbean plate is a small-scale ring of fire, including the Lesser Antilles subduction zone and a complex, highly oblique convergence zone to the north.
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Stephen Hicks 5h
Better than the P word
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Stephen Hicks 23h
Replying to @VolColMac
Hopefully not quite as bad as accidentally shining a laser pointer in the conveners' faces
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Stephen Hicks Mar 21
Me, too. I vividly remember my first ever talk where I was gripping onto the lectern so hard, it was starting to rock from back to front and it could’ve easily been knocked into the audience in row 1 😂 👇
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Stephen Hicks Mar 21
Nice, and maybe the French ML scale is traditionally weighted towards events in the higher Q Alpine region, which is a bit more seismically active.
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Stephen Hicks Mar 21
Replying to @pgoodgame
Hmmmm, not sure ... doesn't seem like it on the face of it but can try and find out
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Stephen Hicks retweeted
Jo Maugham QC Mar 20
Parliament has voted to rule out No Deal. It has voted to rule out the PM's Deal. Logically, that leaves only 'revoke', which Parliament has never voted on. Theresa May has ruled out 'revoke' but we don't live in a dictatorship. Sign so that she listens.
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Stephen Hicks retweeted
emanuele casarotti Mar 20
Dimitri Komatitsch (1970–2019)
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Stephen Hicks Mar 20
For a bit of a Brexit distraction, I recommend this Icelandic crime drama series on iPlayer - very gritty, and even appears to have geothermal-induced earthquakes! Cc - - do you know about this series? Think it's called "Ófærð" in Iceland.
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Stephen Hicks Mar 20
A UK parliamentary group of MPs is looking for expert opinion on earthquakes caused by hydraulic fracturing and associated traffic-light system regulations ...
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Stephen Hicks Mar 20
Uh-oh. Do you have a precise location for the drilling site?
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Stephen Hicks Mar 20
Yes, that's true. Or maybe the Mw estimate used a different set of stations - i.e. closer than those used for the operational hypocentre estimates?
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Stephen Hicks Mar 20
Possibly in reply to this thread ...?
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Stephen Hicks Mar 20
Wow - I agree with Eric. I normally expect Mw and ML to deviate a bit at smaller magnitudes, but that's a huge difference for a M~5 event.
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Stephen Hicks Mar 20
Should be possible to get a waveform moment tensor solution at that magnitude - might also help to constrain better the depth
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Stephen Hicks Mar 20
Replying to @LastQuake
How confident are you of the 2 km depth? Is that a fixed depth or are there arrival times from very close stations?
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Stephen Hicks Mar 20
Replying to @kaseyaderhold
.But what if all these "mini-tremors" are just the self-noise of the instrument/lander...? Time to pull out the old quantum physics analogy: "If a seismometer burps on Mars, and no other seismometer is there to hear coherent background noise, is it a quiet sensor?"
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Stephen Hicks Mar 20
Replying to @gfun
Not convinced by that waveform .... looks a bit ringy ... strange filter, maybe?
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Stephen Hicks Mar 19
Replying to @voooos @CPPGeophysics
Thanks, Paul!
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Stephen Hicks Mar 19
Replying to @voooos @CPPGeophysics
Thanks ... I just didn't want you folks to preempt a potential marsquake observation in the future :) I would use the word "hum" to describe microseismic noise. Personally, I've never seen "quivering" used to describe quakes before. So how about "quivering hum"?
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