The National Museum of Nature and Science, the University of Tokyo, and the Institute of Oceanography, National Taiwan University have released findings that make it difficult to migrate from Taiwan and the Philippines to the Ryukyu Islands due to the Kuroshio tide.It denies the theory that the Paleolithic people moved to the Ryukyu Islands 3 years ago as a result of being swept away by the Kuroshio Current, and the research group thinks that the Paleolithic people gathered knowledge about the Kuroshio Current and aimed at Yonaguni Island. There is.
According to the National Museum of Nature and Science, a research group analyzed the movement of drifting buoys washed away from Taiwan and the Philippines between 1989 and 2017, and 95% were unable to cross the Kuroshio Current entering the East China Sea between Taiwan and Yonaguni Island. rice field.
There were buoys that could be crossed when the sea was rough due to typhoons and north winds, but it is unlikely that ancient people sailed at this time, and it was possible to approach within 20 km from the island of Okinawa prefecture as a whole. It was only 3%.
Studies have shown that there must be at least 10 men and women to maintain a population on a stranded island.The research group says that the theory of drifting to Okinawa cannot be affirmed because it is unlikely that more than 10 men and women are on board an ancient boat.
It is believed that the Paleolithic people migrated from the continent to the Japanese archipelago around 3 years ago, and the history of humankind began, but people already lived in the entire Ryukyu Islands 8000 to 3 years ago. rice field.However, it was not known how the people who were in the Ryukyu Islands came, and there were theories that they accidentally drifted to the island and that they sailed toward the island.
Paper information:[Scientific Reports] Palaeolithic voyage for invisible islands beyond the horizon
