A joint research team including the Japan Agency for Marine-Earth Science and Technology, the Earthquake Research Institute of the University of Tokyo, the Faculty of Science of Hokkaido University, and the Disaster Prevention Research Institute of Kyoto University headed off the coast of the Noto Peninsula on the Japan Agency for Marine-Earth Science and Technology's academic research vessel Hakuho Maru, and investigated the submarine topography. conduct emergency research cruises such as The data obtained will reveal the actual state of earthquake faults and the mechanism of tsunami generation in the Noto Peninsula Earthquake.

 According to the Japan Agency for Marine-Earth Science and Technology, researchers from Tohoku University, Chiba University, Tokyo University of Marine Science and Technology, Tokai University, Hyogo Prefectural University, and Kagoshima University will also participate in the emergency research cruise. It departed from Tokyo Port on the 16th and carried out navigational observations of the ocean floor in the waters surrounding the epicenter area, where active seismic activity continues, such as off the east coast of the Noto Peninsula, and carried out approximately 30 submarine seismometers and 2 submarine potential magnetometers. will be installed, collected approximately one month later, and the recorded data will be analyzed.

 Undersea seismometers measure seismic waves with sensors housed in pressure-tight containers. The seafloor potential magnetometer is a device that observes magnetic and electric fields, making it possible to visualize the ease with which electricity flows beneath the seafloor and understand the distribution of fluids that are believed to have influenced the Noto Peninsula earthquake. The survey results will be used by the government's Earthquake Research Committee for long-term evaluations of active faults in the ocean.

 In the Noto Peninsula earthquake, it has been pointed out that a fault that extends approximately 150 kilometers northeast from the Noto Peninsula moved, and one of the causes is said to be fluid flowing underground. However, since many of the faults are located on the ocean floor, there is a growing need for ocean floor investigations.

reference:[Japan Agency for Marine-Earth Science and Technology] Regarding the implementation of an emergency research cruise of the academic research vessel “Hakuho Maru” in response to the 6 Noto Peninsula Earthquake

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