Austin Elliott

@TTremblingEarth

Earthquake aficionado personally and professionally. Former 'Brit', current SFer. Also tweets abt clouds & maps & sustainable transit. Views my own 🏳️‍🌈he/him

Vrijeme pridruživanja: siječanj 2013.

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  1. Prikvačeni tweet
    17. sij

    One thing I can never get enough of is how profoundly our cities--the whole urban landscape--are shaped by the faults and tectonics that surround and underlie them. I could always just stare and marvel at what an influence the seismic faults have even when they're not lurching

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  2. proslijedio/la je Tweet

    Jaw-dropping sunset this evening ⁦

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  3. This post was 30% because I'm excited/happy, 50% because he looks really dang cute, and 20% because the photo contains basically all of my top 5 favorite things. Bonus points for IDing them all

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  4. At the end of last week--just in time to miss Brexit--my husband finally also moved here from London. He may be a European but I'd say he already looks like a natural in SF. 👖🚊🌴🥦😎👬🏳️‍🌈

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  5. proslijedio/la je Tweet
    prije 14 sati

    The media get it right, scientists are the ones who keep getting it wrong. We do too use the Richter scale: every modern scale in use today was designed to dovetail smoothly with Richter's original formulation, with more sensible values for large magnitudes.

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  6. proslijedio/la je Tweet
    prije 17 sati

    Did you feel today's earthquake in the Mid Atlantic?

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  7. 3. velj
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  8. proslijedio/la je Tweet
    1. velj

    Awesome tool by for making 'ridgeline' topographic maps in the style of Joy Division's iconic Unknown Pleasures album cover: Here's , - it's fun to identify all the . A simple yet compelling way to visualize topography.

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  9. 2. velj
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  10. proslijedio/la je Tweet
    2. velj

    Look at that straight edge to our stratus clouds this morning! Happens when very dry air descends on the back end of a cold front. 📸

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  11. 2. velj
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  12. 2. velj

    Dry cold front coming thru, from above and from below

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  13. 2. velj

    As someone who has moved back and forth between the US and Europe I really appreciate this, and I wish I had more notes to take and letters to write today on which to note the date

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  14. 2. velj

    ...and has subsided again. It was just here to appreciate the sunset too

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  15. 2. velj
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  16. 2. velj

    ...the rest of the "time lapse" of overtaking the city at sundown. 😍🤩🌫️🌁

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  17. 2. velj

    A tsunami of fog just crashed across San Francisco, perfectly beautifully on cue as the sun set and its heat could no longer fend off the Pacific air

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  18. 2. velj

    👀 is coming in to roost for the night

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  19. 1. velj

    The 4.4 earthquake in Long Valley Caldera, 321km away, as recorded here in SF on my

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  20. proslijedio/la je Tweet
    1. velj

    Seismologists use this phenomenon in earthquake early warning. The faster P wave is detected first & sets in motion the calcs of where & how large the EQ is. Then they determine when the slower *more destructive* S waves will arrive at various places.

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  21. proslijedio/la je Tweet
    1. velj

    Fun illustration of the different speeds of P- & S-waves from this mornings M4.4 earthquake near Mammoth. Notice the P-S time gap near the epicenter (3 mi) is 4.5 seconds. 160 miles away near Ridgecrest the P-S gap is 29 seconds. (data from Station Monitor)

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