Geologists are releasing their findings from the massive undersea earthquake and warning that the eastern coastal regions of Japan are in danger of falling into the trench created in the sea floor.

After the earthquake it was hard to collect GPS data points. The results during an earthquake in the east-southeast direction showed moving about 5.3m for Oshika Peninsula, about 1.2m found that there was a new settlement . Moreover, the continued gradual deformation after an earthquake was in wide range around the focal area, after a change from large earthquakes it was greater than 20 cm.

The areas closest to the epicenter of the quake jumped a full 4 meters (13 feet) closer to the United States, geophysicist Ross Stein at the United States Geological Survey told The New York Times. As Japan’s eastern coastline sunk, the tsunami’s waves rolled in.

The 2011 off the Pacific coast of Tohoku Earthquake largely sank the ground level of the Pacific coast of Tohoku region and northern part of Kanto region. The risk of the submergence and flood in these regions has become larger than before the 2011 off the Pacific coast of Tohoku Earthquake.

Therefore, it is necessary to pay special attention to the tide level and to prepare for the submergence and flood in these regions, especially during the spring tide, when the flood tide level becomes higher than usual.

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On the other view, there was a prediction related to this made by Edgar Cayce (1877-1945), the so-called "sleeping prophet". He made a number of remarkably accurate predictions of the future. In 1934, Cayce predicted the beginning and end of World War II many years before it happened. He also predicted the end of Communism. In 1941 he stated "The greater portion of Japan must go into the sea."