The Transformation will occur more rapidly. In 4th Density, the giant comet does not have the magnetic pull that it does in 3rd Density. The effects are lessened, though the general occurrences are the same. Where traumatic, the earthquakes are no greater than experienced today, and the tidal waves no greater than what would be experienced during a hurricane. The reason for the lessened effect is the lighter density.
Greater mass has greater gravitational pull.
Some of our brothers, the Pleiadeans and Sirians, have stated that the Earth will enter a Photon Belt soon, at an indeterminate time in the future. This time is given as indeterminate because entry into the Photon Belt is not determined by the measurable movements of the planets and the motions of the galaxies. The entry into the Photon Belt is determined by the indeterminate behavior and decisions of humanity. Should the orientation of the Earth progress fast enough, so that the Earth would enter 4th Density, then the Photon Belt would be experienced. As it is, the entry into 4th Density is not expected for some years after the cataclysms, and the Photon Belt effects will be taken into consideration at that time.