Last week, it was impressive to see Asaoka-san's anguish over the damage caused by the landslide. This time, it's a quiz about landslides!

A landslide is a general term for disasters that occur when earth and rocks move due to natural forces. So, how many types of landslides are there in total?

Difficulty level is ★★★☆☆(3/5)!

• 
  3 types
  Correct answer

  There are three types of landslides: cliff collapses, debris flows, and landslides.
  

  A landslide is a phenomenon in which a mountain slope collapses. It is the fastest of the three types, and it is difficult to evacuate after it occurs.

  A "debris flow" is a phenomenon in which soil and stones flow together with water. They flow down at speeds of 20 to 40 km per hour. This is about the same speed as a mamachari (a bicycle for women) sprinting at full speed, so it may be difficult to run away after this occurs.

  The image of a landslide is that the soil falls as is, while a debris flow is that the soil flows down in a muddy state.

  A landslide is a phenomenon in which the surface of a mountain slides down. It may be easier to understand if you think of it as a shift rather than a fall.

  All of these disasters are often caused by heavy rain. That's why, when you watch the news about heavy rain, you often hear the phrase "Beware of landslides." If you listen carefully to the news, you'll hear it repeated over and over again.

  However, few people have actually seen a landslide disaster. This is because, unlike strong winds or high waves, landslides are pinpoint disasters. They often occur in the mountains and do not cause any damage to humans.

  However, as you can see from hazard maps, there are areas all over Japan that are at risk of landslides. (In fact, the area behind my house is also a special landslide risk zone.)
  

  Every time the news says "Beware of landslides," a wide area is exposed to danger. However, since it is difficult to escape after an earthquake has occurred, the only measure humans can take is to "escape in advance." That's why weather forecasters keep saying "Beware of landslides" so many times that we're sick of hearing it.

  [Sources and References]
  Disaster prevention column "Landslides"
  https://tenki.jp/docs/note/disaster/1eb5864.html

  "Overlay Hazard Map"
  https://disaportal.gsi.go.jp/index.html

• 
  5 types
  Incorrect
• 
  10 types
  Incorrect

MM

I got my qualifications at about the same age as Monet, and experienced the same weather reporting as Monet during my university days. I noticed the fun and problems of it. I am now a graduate student doing research on how to communicate weather in an enjoyable way. Especially since Monet came to Tokyo, I have been surprised at how many points we share in common lol

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