Despite the uncertainty of when such an earthquake will occur, local authorities are already taking action to prepare … Dr Yokota and his team’s data were able to reveal most previously unknown undersea regions, except for some of the areas directly adjacent to the Nankai Trough. Below you can select how you’d like us to interact with you and we’ll keep you updated with our latest content. Yokota Y. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. More than 70 years have passed since the … 00:01:31:17 DR MARYANNE DEMASI: Just 900km south of Japan's island of Honshu, the Nankai Trough lies along the Pacific Ring of Fire, where 90% of the world's earthquakes occur. New technology for earthquake prediction: Nankai Trough, Japan Dr Yusuke Yokota and colleagues at the University of Tokyo are developing so-called GNSS-A technology, which combines satellite positioning technology (GNSS) and acoustic positioning technology (A) to create precise observations of the seafloor position. In addition, the strong measures to be taken after the Tokai Earthquake prediction And if it is in the Nankai Trough, it might be a huge quake." We optimized the loop kernel for velocity update and intergrid communication on a three-dimensional torus network. Seventy-one municipalities in 10 prefectures, including Tokyo, on the Pacific coast could be hit by tsunami at least 3 meters high within 30 years if a huge earthquake happens in the Nankai Trough (see below), according to the estimated probability of tsunami by the government’s Earthquake Research Committee. For details, see our. But this time, it showed the degrees of urgency for tsunami that have a high possibility of occurring. Cleanup, rescue operations underway in Japan after severe rains kill over 200 people and strand thousands in the recent flooding and landslides in west Japan. To be ready for a national crisis should the Nankai Trough Mega Earthquake occur, we are making every effort to promote various operations. If time changes can be detected, the detailed state before the earthquake can be known, and this will lead to great progress. The Japanese government has released a new projection that nearly 10 million people will seek refuge if a large earthquake occurs in the Nankai Trough region. By clicking below to submit this form, you acknowledge that the information you provide will be transferred to MailChimp for processing in accordance with their Privacy Policy and Terms. Seafloor crustal deformation data along the subduction zones around Japan obtained by GNSS-A observations. They also plan to assess any long-term changes in crustal deformation in the regions over the course of the coming decades. Gradient field of undersea sound speed structure extracted from the GNSS-A oceanography, https://doi.pangaea.de/10.1594/PANGAEA.885139, https://www.researchgate.net/profile/Yusuke_Yokota4, http://sgoi.iis.u-tokyo.ac.jp/index_e.html, http://sgoi.iis.u-tokyo.ac.jp/figure/pamphlet_190724e.pdf, https://www1.kaiho.mlit.go.jp/KOHO/chikaku/kaitei/sgs/datalist_e.html, https://researchoutreach.org/articles/new-technology-for-earthquake-prediction-nankai-trough-japan, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, Preventing aluminium oxide contamination of dental implant surfaces. The GNSS-A technique combines satellite radiowave data with acoustic data measured from under the sea. Do you think the prediction of large earthquakes and tsunamis in the region is going to be easier as a result of this new data? Dr Yokota and his team used their measurement techniques to calculate a sound speed profile roughly from the sea surface to the bottom in order to study the characteristics of the ocean water. This relationship was also predicted in previous observational studies. TOKYO (The Japan News/ANN) - According to Earthquake Research Committee seventy-one municipalities in 10 prefectures, on the Pacific coast could be hit by tsunami at least 3 meters high within 30 years if a huge earthquake happens in the Nankai Trough. The Asahi Shimbun An anticipated offshore mega-quake in the Nankai Trough within 30 years would generate tsunami at least 3 meters high smashing into dozens of municipalities along a … It is predicted that the quake will cause a massive tsunami that could devastate the extensive coastline along the Pacific Ocean, from Shizuoka to Miyazaki (throughout central to west Japan). Damage predictions in Mie Prefecture, if the Nankai Trough Earthquake occurs, will be approximately 9,200 deaths caused by the earthquake and 42,000 deaths caused by tsunami. By contrast, … While the government estimates there is a 70 to 80 percent chance of a magnitude 8 to 9 quake occurring along the Nankai Trough within the next 30 years, the survey underscores the increasing difficulty of precisely predicting the timing, location and strength of imminent quakes, based on observational data. The committee calculated the possibility of tsunami as of Jan. 1, 2020, with reference to magnitude-8 or 9-class earthquakes along the Nankai Trough that had happened once in about 100 or 200 years. Four phases and seven key tasks “Life-saving” phase Task 1 Disseminate timely information, and fully support evacuation from mega tsunami’s landfall in … Nankai Trough, Japan." This is thanks to constant and great technological progress. The Nankai Trough earthquake is a type of megathrust earthquake anticipated to occur along the Nankai Trough off the Pacific coast. The sequence also revealed that inland earthquakes preceded great offshore earthquakes which occurred along the Nankai trough. It is the Nankai Trough earthquake that is said to occur there. Info on Nankai Trough quake to be issued The new information is to come in 2 types -- emergency and regular. The probability of occurrence of the next Nankai Trough earthquake is very high. The Nankai earthquakes or the giant earthquakes that occur off the coast of Shikoku and Kii Peninsula are recorded frequently in the ancient documents. The team also applied this measurement technique to the study of the ocean. Predicted Nankai Trough quake could cause 3-meter or higher tsunami in 10 prefs in 30 yrs, စီးပွားရေးနယ်ပယ်မှထင်ရှားမှုနှင့်ထူးခြားမှုများ, စာပေအနုပညာနယ်ပယ်မှကျော်ကြားသူများနှင့်ထင်ရှားမှုများ, Japan to incorporate carbon neutrality goal into law, CE: Hong Kong will continue to be an international city, Samut Sakhon Covid-19 cases shoot up by another 146, bringing the total number of new cases to 689, S. Korea, US need to work together in Asia but first set objectives: officials. The Nankai Trough Earthquake, predicted to occur in the Mie prefecture of Japan, serves as the case study. Yomiuri Shimbun writes that in areas between the Tokai and Tonankai troughs, and along Nankai Trough, magnitude-8 earthquakes occur every 100 … This effort has focused on a seafloor observation network using a combined Global Navigation Satellite System (GNSS; e.g., Global Positioning System) and acoustic ranging technique. Nature, 534(7607), 374. Dr Yokota completed his PhD in the Department of Earth and Planetary Science, at University of Tokyo in 2013. What other applications are there for the technology? A major earthquake is expected to strike sometime along the Nankai Trough, a submarine trench running off the Japanese archipelago from around Shizuoka Prefecture in … They are difficult to accurately predict in terms of timing, location and scale. Further technology development is required to enable more detailed interpretation of phenomena and the interplate boundary condition, emergency observations, and observations immediately before and after an earthquake for disaster prevention. It is estimated that the death toll will be over 300,000 and 2 million buildings will be damaged. The committee calculated the possibility of tsunami as of Jan. 1, 2020, with reference to magnitude-8 or 9-class along the Nankai Trough, not only in the Tokai region, as more than 70 years have passed since the last two Nankai Trough Earthquakes, the 1944 Showa Tonankai Earthquake and the 1946 Showa Nankai Earthquake (Figure 1). The observation system consists of a seafloor unit with multiple acoustic mirror transponders (devices for receiving and emitting an acoustic signal), and a sea surface unit with an acoustic transducer (a device for converting the acoustic signal into electric signals), a GNSS antenna-receiver and a dynamic motion sensor, to measure the attitude (tilt) of the survey vessel. The committee calculated the possibility of tsunami as of Jan. 1, 2020, with reference to magnitude-8 or 9-class earthquakes along the Nankai Trough that had happened once in about 100 or 200 years. 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