Tectonic Plate Boundaries

Nepal is located directly on top of the boundary between two plates - the Indo-Australian and Eurasian. This is a convergent boundary where collision occurs. Collision means that the rock is going to move upward which is what formed the Himalayas and, subsequently, the Tibetan Plateau. This also means that Nepal has significant seismic activity and is prone to earthquakes and flooding. Earthquakes lead to landslides which often dam rivers and lead to flooding, something that is further exacerbated by their monsoon season. They experienced a huge earthquake - magnitude 7.8 - in 2015 that devastated the country and took thousands of lives. Knowing what type of plate boundary they are on should help them to prepare for the natural hazards they are likely to face. However, Nepal is a relatively poor country which means they don’t really have the money to retrofit their buildings such as we do in California. 

There are multiple thrust systems beneath this boundary. If these faults are close together, rupture jumping can occur which means the rupture from an earthquake can reach to another fault which leads to an even larger earthquake. Megathrust faults occur when two plates connect to one another, building up pressure for a long time, then suddenly release and it creates huge earthquakes. 

https://www.geologyin.com/2015/04/what-caused-nepal-earthquake.html

http://blogs.wsj.com/briefly/2015/04/28/5-maps-of-nepals-earthquake-zone/

Comments

  1. Ana GGSeptember 2, 2025 at 9:15 AM

    Interesting research!- Looking forward to your earthquakes findings!

    ReplyDelete

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