Latest news with #Kuroshio
TimesLIVE
3 hours ago
- Science
- TimesLIVE
With a primitive canoe, scientists replicate prehistoric seafaring
Our species arose in Africa roughly 300,000 years ago and later trekked worldwide, eventually reaching some of Earth's most remote places. In doing so, our ancestors surmounted geographic barriers including treacherous ocean expanses. But how did they do that with only rudimentary technology available to them? Scientists now have undertaken an experimental voyage across a stretch of the East China Sea, paddling from Ushibi in eastern Taiwan to Japan's Yonaguni Island in a dugout canoe to demonstrate how such a trip may have been accomplished some 30,000 years ago as people spread to various Pacific Islands. The researchers simulated methods Paleolithic people would have used and employed replicas of tools from that prehistoric time period such as an axe and a cutting implement called an adze in fashioning the 7.5-metre-long canoe, named Sugime, from a Japanese cedar tree chopped down at Japan's Noto Peninsula. A crew of four men and one woman paddled the canoe on a voyage lasting more than 45 hours, travelling roughly 225km across the open sea and battling one of the world's strongest ocean currents, the Kuroshio. The crew endured extreme fatigue and took a break for several hours while the canoe drifted at sea, but managed to complete a safe crossing to Yonaguni.
Deccan Herald
3 hours ago
- Science
- Deccan Herald
Scientists retrace 30,000-year-old sea voyage, in a hollowed-out log
In 2017, with the support of Taiwan's National Museum of Prehistory, the scientists toyed with rafts made of bamboo and rattan. A prototype was durable but, as was the case with the reed crafts, not fast enough to negotiate the Kuroshio. A second, lighter version was prone to cracking and did not last long in the high seas.
10 hours ago
- Science
Voyage from Taiwan to Japan Isle 30,000 Yrs Ago Possible: Team
News from Japan Society Culture Jun 26, 2025 07:59 (JST) Tokyo, June 26 (Jiji Press)--A Japanese team has concluded that it was possible to travel from Taiwan to Japan's westernmost island of Yonaguni in a dugout canoe 30,000 years ago. The voyage in a log boat, with no sails, was possible if all the rowers were highly skilled and adjusted their course with the fast Kuroshio current in mind, the team said. The team's findings resulted from a project by Japan's National Museum of Nature and Science to recreate how Japanese ancestors traveled from mainland China to present-day Taiwan, which was connected by land at the time, and then sailed to Yonaguni, east of Taiwan. The findings were included in two papers published in U.S. journal Science Advances on Wednesday. "You can see Yonaguni from some of the high peaks in Taiwan, but you don't arrive by chance (at Yonaguni) just by drifting," said Yosuke Kaifu, the team's leader and professor at the University of Tokyo. [Copyright The Jiji Press, Ltd.] Jiji Press
Yahoo
13 hours ago
- Science
- Yahoo
With a primitive canoe, scientists replicate prehistoric seafaring
By Will Dunham (Reuters) -Our species arose in Africa roughly 300,000 years ago and later trekked worldwide, eventually reaching some of Earth's most remote places. In doing so, our ancestors surmounted geographic barriers including treacherous ocean expanses. But how did they do that with only rudimentary technology available to them? Scientists now have undertaken an experimental voyage across a stretch of the East China Sea, paddling from Ushibi in eastern Taiwan to Japan's Yonaguni Island in a dugout canoe to demonstrate how such a trip may have been accomplished some 30,000 years ago as people spread to various Pacific Islands. The researchers simulated methods Paleolithic people would have used and employed replicas of tools from that prehistoric time period such as an axe and a cutting implement called an adze in fashioning the 25-foot-long (7.5-meter) canoe, named Sugime, from a Japanese cedar tree chopped down at Japan's Noto Peninsula. A crew of four men and one woman paddled the canoe on a voyage lasting more than 45 hours, traveling roughly 140 miles (225 km) across the open sea and battling one of the world's strongest ocean currents, the Kuroshio. The crew endured extreme fatigue and took a break for several hours while the canoe drifted at sea, but managed to complete a safe crossing to Yonaguni. Just as prehistoric people would have, the voyagers navigated by the sun and stars, as well as the direction of the ocean swells, though for safety's sake they were accompanied by two escort craft. Yonaguni is part of the Ryukyu chain of islands stretching from Kyushu, the southernmost of Japan's four main islands, down to Taiwan. The researchers previously failed with attempted crossings using reed rafts and then bamboo rafts, finding that they were too slow, insufficiently durable and unable to overcome the strong ocean current. "Through the project with many failures, we have learned the difficulties of crossing the ocean, and this experience gave us a deep respect for our Paleolithic ancestors," said University of Tokyo anthropologist Yousuke Kaifu, lead author of the study published on Wednesday in the journal Science Advances. "We found that the Paleolithic people could cross the sea with the strong ocean current if they had dugout canoes and were skillful, experienced paddlers and navigators. They had to face the risk of being drifted by the strong ocean current and the possibility that they would never be able to come back to their homeland," added Kaifu, who was aboard one of the escort boats. Archeological evidence indicates that people approximately 30,000 years ago first crossed from Taiwan to some of the Ryukyu islands, which include Okinawa. But scientists had puzzled over how they could do this with the rudimentary technology of the time - no maps, no metal tools and only primitive vessels. And the Kuroshio current, comparable in strength to the Gulf Stream off Mexico, presented a particular challenge. The research was in the vein of the famous 1947 Kon-Tiki expedition in which Norwegian explorer Thor Heyerdahl carried out a much longer journey by raft from South America across the Pacific to the Polynesian islands. Heyerdahl aimed to show how prehistoric people from the Americas could have colonized Polynesia. "His theory is now countered by a series of pieces of evidence, but it was a great trial at the time. Compared to the time of the Kon-Tiki, we have more archeological and other evidence to build realistic models" of prehistoric voyages, Kaifu said. The researchers in a companion study published in the same journal used simulations of sea conditions between Taiwan and Yonaguni 30,000 years ago to examine whether such a crossing was attainable at a time when the Kuroshio was even more powerful than today. "As our paleo-ocean model simulation showed, crossing the Kuroshio was possible in ancient times, so I believe they achieved it," said physical oceanographer and study lead author Yu-Lin Chang of the Japan Agency for Marine-Earth Science and Technology. "However, ocean conditions were highly variable. Thus, ancient people may have encountered unpredictable weather conditions during their journey, which could have led to failure," Chang added.
Straits Times
15 hours ago
- Science
- Straits Times
With a primitive canoe, scientists replicate prehistoric seafaring
A dugout canoe with four men and one woman paddling is pictured during a crossing across a region of the East China Sea from near Ushibi, Taiwan to Yonaguni Island, traversing the Kuroshio current, in this handout image released on June 25, 2025. Yousuke Kaifu/Handout via REUTERS Researcher Kunihiro Amemiya uses a period-accurate axe to chop down a Japanese cedar tree in Noto Peninsula, Japan, to make a dugout canoe for a crossing across a region of the East China Sea from Taiwan to Yonaguni Island, in this handout image released on June 25, 2025. Yousuke Kaifu/Handout via REUTERS An axe accurate to a period of 30,000 years ago, that scientists used to make a dugout canoe for a crossing across a region of the East China Sea from Taiwan near Ushibi to Yonaguni Island, traversing the Kuroshio current, is seen at Noto Peninsula, Japan, in this handout image released on June 25, 2025. Yousuke Kaifu/Handout via REUTERS A dugout canoe with four men and one woman paddling is pictured during a crossing across a region of the East China Sea from near Ushibi, Taiwan to Yonaguni Island, traversing the Kuroshio current, in this handout image released on June 25, 2025. Yousuke Kaifu/Handout via REUTERS A dugout canoe is pictured before departure on a crossing across a region of the East China Sea to Yonaguni Island, with leaf wave guards at the bow and stern, near Ushibi, Taiwan, in this handout image released on June 25, 2025. Yousuke Kaifu/Handout via REUTERS Our species arose in Africa roughly 300,000 years ago and later trekked worldwide, eventually reaching some of Earth's most remote places. In doing so, our ancestors surmounted geographic barriers including treacherous ocean expanses. But how did they do that with only rudimentary technology available to them? Scientists now have undertaken an experimental voyage across a stretch of the East China Sea, paddling from Ushibi in eastern Taiwan to Japan's Yonaguni Island in a dugout canoe to demonstrate how such a trip may have been accomplished some 30,000 years ago as people spread to various Pacific Islands. The researchers simulated methods Paleolithic people would have used and employed replicas of tools from that prehistoric time period such as an axe and a cutting implement called an adze in fashioning the 25-foot-long (7.5-meter) canoe, named Sugime, from a Japanese cedar tree chopped down at Japan's Noto Peninsula. A crew of four men and one woman paddled the canoe on a voyage lasting more than 45 hours, traveling roughly 140 miles (225 km) across the open sea and battling one of the world's strongest ocean currents, the Kuroshio. The crew endured extreme fatigue and took a break for several hours while the canoe drifted at sea, but managed to complete a safe crossing to Yonaguni. Just as prehistoric people would have, the voyagers navigated by the sun and stars, as well as the direction of the ocean swells, though for safety's sake they were accompanied by two escort craft. Yonaguni is part of the Ryukyu chain of islands stretching from Kyushu, the southernmost of Japan's four main islands, down to Taiwan. The researchers previously failed with attempted crossings using reed rafts and then bamboo rafts, finding that they were too slow, insufficiently durable and unable to overcome the strong ocean current. "Through the project with many failures, we have learned the difficulties of crossing the ocean, and this experience gave us a deep respect for our Paleolithic ancestors," said University of Tokyo anthropologist Yousuke Kaifu, lead author of the study published on Wednesday in the journal Science Advances. "We found that the Paleolithic people could cross the sea with the strong ocean current if they had dugout canoes and were skillful, experienced paddlers and navigators. They had to face the risk of being drifted by the strong ocean current and the possibility that they would never be able to come back to their homeland," added Kaifu, who was aboard one of the escort boats. Archeological evidence indicates that people approximately 30,000 years ago first crossed from Taiwan to some of the Ryukyu islands, which include Okinawa. But scientists had puzzled over how they could do this with the rudimentary technology of the time - no maps, no metal tools and only primitive vessels. And the Kuroshio current, comparable in strength to the Gulf Stream off Mexico, presented a particular challenge. The research was in the vein of the famous 1947 Kon-Tiki expedition in which Norwegian explorer Thor Heyerdahl carried out a much longer journey by raft from South America across the Pacific to the Polynesian islands. Heyerdahl aimed to show how prehistoric people from the Americas could have colonized Polynesia. "His theory is now countered by a series of pieces of evidence, but it was a great trial at the time. Compared to the time of the Kon-Tiki, we have more archeological and other evidence to build realistic models" of prehistoric voyages, Kaifu said. The researchers in a companion study published in the same journal used simulations of sea conditions between Taiwan and Yonaguni 30,000 years ago to examine whether such a crossing was attainable at a time when the Kuroshio was even more powerful than today. "As our paleo-ocean model simulation showed, crossing the Kuroshio was possible in ancient times, so I believe they achieved it," said physical oceanographer and study lead author Yu-Lin Chang of the Japan Agency for Marine-Earth Science and Technology. "However, ocean conditions were highly variable. Thus, ancient people may have encountered unpredictable weather conditions during their journey, which could have led to failure," Chang added. REUTERS Join ST's Telegram channel and get the latest breaking news delivered to you.
