[x3d-public] [x3dom-users] Seismicity related Icelandic fissure eruption

[Andreas Plesch]

Thanks. I added the animation as outlined showing 12h windows of
events and leaving a ghostly marker after the window passed.
Apparently, IMO updates its table of earthquakes every 5 minutes so it
is worth reloading once in a while.

Cheers, Andreas


On Wed, Nov 15, 2023 at 4:14 PM Nicholas Polys <npolys at vt.edu> wrote:
>
> Fantastic!!!
>
>
> On Wed, Nov 15, 2023 at 1:21 PM Andreas Plesch <andreasplesch at gmail.com> wrote:
>>
>> Let me share a visualization of the the hundreds of earthquakes now
>> occurring daily in Iceland, heralding a volcanic eruption expected for
>> any day now:
>>
>> https://andreasplesch.github.io/earthquakes-3d/iceland/reykjanes-2023/index.html
>>
>> It shows current seismicity along the opening fissure.
>>
>> It is pure x3dom, mashing up the X3D geospatial component, gltf
>> content, geojson processing and live data sourcing from the Icelandic
>> Meteorological Office. The data access required a cors proxy which may
>> not always be available but was stable during testing.
>>
>> A new idea was to use an existing glb of a digital elevation model
>> draped with imagery (provided by Icelandic Institute of Natural
>> History) in an accurately located Geolocation node which worked very
>> well to coregister it perfectly with the earthquakes. The glb is heavy
>> and requires a good data connection but renders well.
>>
>> It would be cool to have the earthquakes animate over time. It may
>> work to assign texture coordinates based on time of occurrence and
>> animate a texture transform. The texture would be 1d with transparent
>> cutoffs.
>> Let's see. The total period is 48h. The texcoord could be fractional
>> hours. So to show the 1h of earthquakes starting at the 10h mark, the
>> texture transform would shift by -10. Scaling can change the duration.
>> Scaling up by 2 would show less earthquakes, so only 30 minutes. I
>> think this could work and be fast.
>>
>> -Andreas
>>
>> --
>> Andreas Plesch
>> Waltham, MA 02453
>>
>>
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>> X3dom-users at lists.sourceforge.net
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>
>
>
> --
> Nicholas F. Polys, Ph.D.
>
> Director of Visual Computing
> Virginia Tech Research Computing
>
> Affiliate Professor
> Virginia Tech Department of Computer Science
> https://people.cs.vt.edu/~npolys/



-- 
Andreas Plesch
Waltham, MA 02453