What cataclysmic event would cause a world wide flood?

The Book of Job describes the Earth as seen from space, and when we view the side of the Earth opposite Jerusalem, all we see is the vast Pacific Ocean with a circular horizon inscribed on the face of the water at the boundary of sea and space.
Job 26:10 He drew a circular horizon on the face of the waters, At the boundary of light and darkness.
This horizon is approximately the region known as the Pacific Ocean’s Ring of Fire, characterized by explosive volcanoes, violent earthquakes, and colossal Tsunamis. Recent scientific discoveries indicate this is the location of a massive asteroid impact that would have caused a world wide flood; the Earth is literally still reverberating from this horrific event. The Hawaiian Hot Spot is the remnant of this horrendous collision, and evidence of an impact so violent it virtually punched a hole thru the earth’s crust. The asteroid was at least 20 miles wide and traveling over 30,000 miles per hour. If the angle of impact was from west to east it could have increased the earth’s rotation by one and one quarter days per year, as indicated in the Book of Enoch. The increase in spin and altered gravitational forces would also account for a change in the duration of the month from 30.3 days, to 29.6 days, reducing the length of a month by a little over 16 hours. The impact would have generated tsunami waves several thousand feet tall that would have swept around the globe inundating most of the habitable earth’s surface. The caldera would vaporize billions of gallons of water that condensed into super torrential rains world wide, and the ejecta from the explosive impact would have rained down over the Pacific Ocean vaporizing even more water. This could account for the Bible saying the fountains of the great deep were broken up, and the windows of heaven were opened. Here is how the Book of Jasher describes this event:
Jasher Chapter 6:11 And on that day, the Lord caused the whole earth to shake, and the sun darkened, and the foundations of the world raged, and the whole earth was moved violently, and the lightning flashed, and the thunder roared, and all the fountains in the earth were broken up, such as was not known to the inhabitants before; …