MD-T chart in 釧路地方中南部

MD-T chart in 釧路地方中南部 (Central Southern Kushiro region) 

MD values between 1978-2002 were going toward the shallow depth around 2km. In 2004/11/29, M7.1 of 50km depth was occurred as Kushiro Earthquake. After it, Earthquakes of 1km have increased in 2015. In 1961/8/12, M7.5 of 50km depth was occurred also (No proper name because of no serious damage).