Hi Petra. Found part of the story we have been looking for.

F. Omori was on a visit to a geophysical meeting at Riverview, Australia in 1923. As recounted by Aki [1980], the observation at Riverview was a shock to Omori not only because of his concerns about damage and loss of life, but because it also marked a failure in his career. Nearly two decades prior to the Kanto earthquake, A. Imamura, Omori's younger colleague, published warnings of the possibility of a destructive earthquake in the near future. Imamura advised that the earthquake would be followed by a "general conflagration" should the fire protection system remain unimproved, and the possible loss of lives could reach 100,000 or more. Omori and other scientists had denounced Imamura's warnings and criticized him for causing social unrest. Unfortunately, Imamura's concerns were well founded, for the Kanto earthquake occurred in 1923, and nearly 140,000 lives were lost from the fires that resulted. Omori's health declined rapidly during his journey back to Japan, and he died shortly after his return.

I’m still trying to find out what happened to A. Imamura. I have sent out a couple of inquires to some of my contacts in Japan to see if they can give my any information.

Due to the customs at that time and that still exist to some extent today I’m not going to learn much more. A. Imamura could have been ostracized after the quake occurred. He published his warnings and because Omori and others had denounced him Omori “lost face”. A younger colleague just doesn’t do that. Take Care…Don in creepy town.