Worst Case

Strongest shaking to occur just after the polar shift which should take about 1 hour or less. Shaking to reach a maximum amplitude 1 to 1.5 hour after the shift starts. Biggest jolts coming from crust sliding on top of or in collision with crust (subduction, mountain building). The estimated duration of the strongest shaking to last 30 minutes before it drops by a magnitude of one on the Richter scale. Three hours of high magnitude shaking. 12 hour duration before shaking settles down to less than magnitude 6. Able to barely crawl around after about 9-10 hour. Earth in continuous shaking for approximately 12 days. Quakes continue off an on for 10-20 years after. Maximum of 11.5 magnitude (amplitude) earth quakes with exponential decline with time.

Depending on the location on the planet: Average maximum expected amplitude of motion vertical (up and down) of the ground to be 100 ft to 200 ft with a maximum of 5 G acceleration. This applies to something fastened to bedrock. Maximum expected amplitude of the motion of the ground in a horizontal (side to side) direction to be 200 ft to 300 ft with a maximum of 9 to 10 G acceleration. Note: "G" is a useful measure of force exerted when something is vibrating. 1 G = 32 ft/sec^2 or acceleration of gravity - practically speaking 1 G produces a force of acceleration or deceleration equal to it's current weight - 2 Gs would produce a force equal to twice it's current weight and so on.

With a vertical acceleration of 5 G anything loose on the surface will leave the surface of the bed rock which is vibrating, this includes sand, hard clay soil, domes, and other objects not securely fastened to bed rock. As a worst case say a dome is accelerated up for an amplitude of 200 ft at up to 5 G acceleration. The Bed rock stops and reverses direction. The dome being not tied to bedrock will still keep going up and will reach a maximum of say 250 to 300 ft and began to fall at 1 G. Meanwhile Bedrock has gone down to the bottom of it's amplitude and reversed its direction, and on it's way up it hits the falling dome instantly reversing it's direction, picking it up to then be tossed again into the air again. Vertical accelerations of over 1 G bedrock vibration will last for an estimated 10 to 15 minutes. During this time objects will be leaving the earth’s surface. After this Clay, soil and sand due to liquefaction (acts like a liquid) causes sloshing back and forth in a wave action sometimes engulfing objects floating on the surface. This lasts for about 3 hours.

Winds to build up during and after the time of the actual motion of the earth to an average maximum of 350 miles/Hr. High winds expected for 2 weeks to 6 weeks depending on the temperature shift for the area. The greater the temperature shift of the region would causes winds for a longer period of time. Some areas near long term melting ice will experience strong winds for several years. Any standing structure will need to withstand flying objects of various sizes averaging from half a pound up to occasional as large tree trunk size, with up to 2 weeks duration. The closer to the ground the slower the wind, but also, the potential for the larger blown or rolling objects.

Temperature to be in transition for several weeks to 6 months depending on the amount of latitude change for the given location. Due to cloud cover temperature to be warmer at night and cooler in days to stabilize at 12 degree Fahrenheit (7 degree Centigrade) below the current average for the season at any given ending latitude. This would be due to lack of sun light, the cloud cover, and melting poles. Rain, sleet, or snow (depending on location) to be continuous for 1-2 months. Precipitation to continue to be above normal tapering off to near normal for the latitude after about 10-20 years.

The average amount of daylight at midday, (one month after PS) to be equivalent to a typical clear 4 watt (115v) night light bulb held about 6 ft away from the surface being view in a completely dark room. The amount of light, on a full to a new moon night, to be equivalent to the 4 watt bulb about 21 (full moon) to 46 ft (new moon) away from the surface being viewed. Two years after PS the light at midday will improve to become 5 ft (midday), and on a full to new moon night, 18 to 39 ft. The trend will improve exponentially, until we have the light we have today in 25-30 years.

The difference in the radius of earth at the pole, and at the equator is about 13.1 miles (21.4 KM), due to the centrifugal force of rotation at the equate making it bulge. This is over twice the height of the highest mountain on the planet. If the planet poles shifts position by about 90 degrees then the tectonic plates that the north and south poles are on will need to adjust, once the planet begins to rotate. Pressure from the molten liquid, that these plates float on, will grow at the old poles. This will cause slippage, and adjustment in plates which will cause major earth quakes as the land rises about 13 miles at the old poles, and sinks about 13 miles at the new poles. This I believe to be the cause of the near continuous shaking for approximately 12 days as the planet begins to rotate.

Static will make Ham radio communications impossible for 1-2 months for even the best of equipment.

Offered by Mike.