[x3d-public] Seismicity related Icelandic fissure eruption

[Andreas Plesch]

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