The Disaster Research Note website was created.
disasterresearchnotes.site/
Youtube channel 
www.youtube.com/channel/UC2F0Z_WfPkc_8o109TJhqjw

The below disaster link library site which I created before is now under construction.  The site will be updated soon, I hope.
http://disasters.weblike.jp/index.html

The below-linked site is useful to search for disaster-related institutions. The site was created when I was working at NIED.
http://dil.bosai.go.jp/link/world/english/index.html

My NIED(National Research Institute for Earth Science and Disaster Resilience) mentor's work
Mathematical Geomorphology ​
takemizu.karamatu.com/mathgeom/
Lecture"s Notes for DRR (Disaster Risk Reduction)　（in Japanese）
takemizu.karamatu.com/portal/
DRR Essays (in Japanese)
takemizu.karamatu.com/column/00toppage/