Everything Mt. Fuji Q&A

Everything Mt. Fuji Q&A

This session answers questions about the ‘Osawa Failure,’ which receives the most questions.

●Outline of the Osawa Failure

Answer
Q 1:When did the Osawa Failure start?
⇒Q1
Q 2:What kind of river is the Osawa River, which originated from the Osawa Failure?
⇒Q2
Q 3:What is the Headwater Area of Osawa River like?
⇒Q3
Q 4:What is the Osawa River Valley Area?
⇒Q4
Q 5:What is the Osawa Mid-stream Area?
⇒Q5
Q 6:What is the Iwadoi Area of Osawa River?
⇒Q6
Q 7:What is the Osawa River Alluvial Fan?
⇒Q7
Q 8:Are there any other large mountain streams on Mt. Fuji apart from Osawa River Valley? ⇒Q8
 

●About collapses and debris flows

Answer
Q 9:What are the characteristics of the debris flow of Osawa River?
⇒Q9
Q10:What is the ‘yukishiro’ (snow that melts and flows into rivers) that appeared in many Osawa River disasters before?
⇒Q10
Q11:Is it possible to predict the occurrence of debris flows in Osawa River?
⇒Q11
Q12: How are the inner areas of Osawa Failure measured? ⇒Q12
 

●About future forecast

Answer
Q13:Do collapses frequently accompany Tokai earthquake? ⇒Q13
 

●Prevention Measures against Landslide Disasters

Answer
Q14:What are some prevention measures against debris flow disasters for Osawa River?
⇒Q14
Q15:How effective are the disaster prevention facilities?
⇒Q15
Q16:What are attempts to restore vegetation states at Osawa Failure? ⇒Q16