1923 Great Kantō earthquake are the peak of the typhoon season. Schools and public and private organizations host disaster drills. Tokyo is located near a fault zone beneath the Izu Peninsula which, on average, causes a major earthquake about once every 70 years, and is also located near the Sagami Trough, a large subduction zone that has potential for large earthquakes. Every year on this date, schools across Japan take a moment of silence at the precise time the earthquake hit in memory of the lives lost. Some discreet memorials are located in Yokoamicho Park in Sumida Ward, at the site of the open
1923 Great Kantō earthquake in Yokosuka in compliance with the Washington Naval Treaty of 1922. The earthquake damaged the "Amagi" beyond repair, leading it to be scrapped, and the unfinished fast battleship "Kaga" was converted into an aircraft carrier in its place. In contrast to London, where typhoid fever had been steadily declining since the 1870s, the rate in Tokyo remained high, more so in the upper-class residential northern and western districts than in the densely populated working-class eastern district. An explanation is the decline of waste disposal, which became particularly serious in the northern and western districts when traditional methods of waste disposal