Gorkha earthquake Flashcards
when was the Gurkha earthquake
25th April 2015
what is the GDP of Nepal
$24 billion
what is the HDI of Nepal
0.583
what plate boundary
eurasian and indian plate - convergent
continental - continental
fold mountains
how prone is Nepal to earthquakes
11th in the world
on average how many earthquakes every 40 years
two 7-8 Mw earthquakes
how does the geological structure of Nepal increase seismic risk
valley structures
in Kathmandu valley the depth of sediment reaches 600m
as seismic waves pass through this material - they are amplified - causing structures to swing violently
where was the epicentre
90 km NE of Kathmandu
how many aftershocks occurred
51 aftershocks equal or greater than 5 MW
included a 7.3 MW shock in May - 200 more fatalities
why did liquefaction occur
localised liquefaction in Kathmandu due to lake sediments and high water table
landslides and avalanches caused by the earthquake
4000 landslides
most severe in Langtang valley - destroying 3 villages and killing 52
everest avalanche killed 22
economic impacts (4)
$10 bn cost to national economy
tourism fell to a 6 year low - loss of $600 million
60 countries offered assistance including EDC’s and LEDC’s
7000 schools destroyed - long term smaller workforce
social impacts (4)
increased trafficking of young women and girls for prostitution
1mn in need of food aid
2.8 million people displaced - mainly rural migrants living in Kathmandu
tibetan villages in Himalayas hit hard - due to living on the slopes
environmental impacts (4)
freshwater ecosystems in Koshi basins damaged due to increased sediment
loss of family livestock - 17,000 (cattle) - 40,000 chickens
escape of rainbow trout from fish farms damaging local species
2.2% of forest cover lost
political impacts (3)
aid distribution hampered by political corruption and ethnic minorities were marginalised
single women struggled to obtain aid - due to patriarchal society norms
India accused of virtue signalling and using aid as method to exert influence in Nepal