Citation

Miyaguchi K. Jpn. Railw. Eng. 1979; 18(4): 4-5.

Copyright

(Copyright © 1979, Japan Railway Engineers' Association)

DOI

unavailable

PMID

unavailable

Abstract

Japan is marked by steep topographic features with rivers flowing into the sea in such terrain. To alleviate disasters originating from rainfall, watersheds upstream from railway roadbeds are surveyed with aerial photographs. A technical manual for interpretation of these photos, now being prepared, will show topography before and after disasters that have occurred in the past with characteristic geology and vegetation indicated. Conditions symptomatic of potential future landslides and floods will be stressed.