Day_72 : 1983 Sea of Japan earthquake

The 1983 Sea of Japan earthquake or 1983 Nihonkai-Chubu earthquake occurred on May 26.The magnitude of the earthquake was 7.8.It occurred in the Sea of Japan. The mortality number was 104 and 100 were caused by the tsunami. The tsunami hit communities along the coast, especially, Aomori and Akita Prefectures and the east coast of Noto Peninsula.
There are three things to share about the tsunami disaster.
The first is the tsunami generated location, the second is the broadcasting, and the third is the victims of school children. The first, there was an ancient tradition which tsunami never hit the coast of the sea of Japan. This normalcy bias* exacerbates the damage. The second, this was the first tsunami disaster  broadcasted all over the world during the time. The people who had homevideo also contributed to the media. The tsunami warning system, wireless tsunami information from the sea of Japan to the local area, to inform local people was improved after the event. The third, 43 school children were hit and 13 were passed away. They were on an excursion. The school teacher could not do anything during the time. The 2011 Great East Japan Earthquake and Tsunami disaster also had some teachers related issues. The both tsunamis were daytime tsunamis.

*Normalcy bias

Day_57 : Normalcy Bias

Day_62 : liquefaction

After the 2011 Great East Japan Earthquake and Tsunami disaster, Chiba prefecture (including Disney Land and Disney Sea) faced liquefaction Problems. The liquefaction means a phenomenon whereby a saturated or partially saturated soil substantially loses strength and stiffness in response to an applied stress, usually earthquake shaking or other sudden change in stress condition, causing it to behave like a liquid *. There were many houses in Chiba prefecture inclined caused by the liquefaction. The people living in the houses lost their health such as dizzy and nauseous symptoms. They also faced financial challenges to fix their houses. Niigata earthquake in 1964 is very famous for the liquefaction as you can see the below Wikipedia site.

NIED(National Research Institute for Earth Science and Disaster Prevention) developed “Ekky” to explain liquefaction for mainly school children.


Day_50 : NWC and Univ. of Oklahoma

Do you know the disaster movie, twister*? This is a very nice movie to recognize the tornado disasters and scientific perspectives. The one of the model location is Oklahoma.

I had an opportunity to visit the National Weather Center (NWC) **and University of Oklahoma to study on disaster information process in 2007, sorry long long time ago. The NWC is located in the University campus. The NWC is the core of not only research activities, but also for contributing to the general public. The University has a lot of shelters inside the buildings***.

The University was active to disseminate the information to the general public. Especially, I learned a lot about the university’s social role for local communities.

There were some shelters in front of the houses in the areas****.




*** University’s auditorium (Can be transformed to a shelter during the time)




I will write more……