2034-03-11 1542EST The Ultimate Tornado
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The g forces at the gravity spike are absurdly high - far outside the realm of intuition. The spike effectively creates a hard vacuum atop a fissure a few hundred metres deep. At the bottom of the fissure is a layer of molten rock made up of what was the crust.
The spike appears to be moving westward at 1180km/h due to the Earth rotating under the spike.
The atmosphere is hitting the spike fast enough that there is no particular wind on this edge. This atmosphere is pulled to the bottom in less than a millisecond.
Compressed by 10-15%.
Compressed and liquified.
Forced downward many Km, but not significantly compressed. This would cause an upward flow in the surrounding fluid, but the volume and pressure change would be relatively small.
Explosive decompression, but much of it gets caught in the spike. A wind follows the spike, driven by the air pressure dropping drastically. Near the edge, wind speeds reach 400km/h. The inrushing air forms vorticies and tornados.
Strong current towards the lance.
Rapid decompression and cooling, but mostly upwelling from pressure in the mantle.
The upward flow makes the magma flow much faster than normal (60km/h), erupting up at around 100km/h (28m/s).
North and South Edges
The atmosphere is sucked in to the vacuum, but the wind speed is relatively low, increasing as the spike passes by, and then fading.
- The KiloGrav (KGr) downforce drilled the trench westward at 1180km/h - the rotational velocity of the Earth at about 45°N. The rock under the (ultimately) 472Km2 strip (236x2Km) was pulverized and then deeply compacted all the way to the upper mantle - not far down for much of the path. This is a huge vent for the disturbed mantle to pour out of. The eruption doesn't send a lot of material into the atmosphere at first. It does cause thousands of Km3 of liquid rock to pour up the vent and then spill out over the landscape and sea floor. River valleies were filled in minutes - including the Columbia. Of course having the lance cross the river and then drill into the ocean was not so good.
- In the upper atmosphere the spike sheds thousands of horizontal vorticies as the atmosphere was pulled inward with literally astronomical force. These cause weird mixing of the normal layers, and spark thunder cells and tornados of epic proportions. Apocalyptic, even.
Reports from geologists in the region indicated that the entire Ring of Fire is somewhat destabilized, though no major quakes have happened yet. Simulations showed that the pulverized, compacted rock would form plates of something like granite, roughly 80% of the thickness of the igneous rock in the region. The flexible strength of the rock was a matter of intense speculation. If it were strong enough it might plug the giant hole to the mantle for long enough to stabilize and not flood the region with magma.
NASA reported that all LEO satellites that cross the low g zone were knocked out of orbit by the changed g force and the significant expansion of the atmosphere in the region. Similar but smaller effects have been observed during atmospheric heating by solar flares.