Floods and Landslides: What Happened
Over the past week, a large part of Asia has been hit by devastating floods and landslides, resulting in multiple deaths. The main cause of these events was the torrential rain that hit Vietnam, southern China, and South Korea. According to the Vietnam National Center for Hydro-Meteorological Forecasting, the Phuc Than meteorological station recorded 206mm of rain in 24 hours, between last Thursday and Friday, causing the destruction of houses, power outages, and the destruction of 238 hectares (588 acres) of agricultural land.
In addition, sudden floods swept through the village of Muong Than, in southern Vietnam, on Friday morning, causing the death of at least four people and leaving four others missing. South Korea was also affected, with rainfall totals reaching almost 200mm, with a station in Paju, north of Seoul, recording 192.5mm, causing the flooding of houses and roads.
Why It Matters
Flood and landslide events have a significant impact on the affected communities. In addition to loss of human life, these events also cause significant damage to infrastructure, agriculture, and the local economy. Floods can lead to the loss of homes, schools, hospitals, and other essential buildings, leaving communities without access to basic services.
In addition, floods can have a long-term impact on public health, as standing water can become a breeding ground for mosquitoes and other disease vectors. This can lead to outbreaks of diseases such as malaria, dengue, and yellow fever.
The Mechanism Behind Floods and Landslides
Floods and landslides are caused by a combination of factors, including intense rainfall, terrain topography, and soil drainage capacity. When rain falls in an area, part of it is absorbed by the soil, while the rest flows over the surface as surface runoff.
If the rain is intense enough, the surface runoff can become a rapid and powerful flow of water, capable of carrying rocks, trees, and other debris. This can lead to floods and landslides, especially in areas with steep slopes or unstable soil.
Bigger Picture
Floods and landslides are not isolated events, but rather part of a larger pattern of global climate change. The planet's temperature is rising, which is leading to an increase in evaporation of water from the oceans and, consequently, an increase in rainfall and the frequency of extreme events.
In addition, urbanization and deforestation are increasing the vulnerability of communities to floods and landslides. The removal of vegetation and soil impermeabilization can reduce the soil's ability to absorb water, leading to an increase in surface runoff and, consequently, floods and landslides.
What Happens Next
It is likely that floods and landslides will continue to affect Asia and other regions of the world in the coming years. It is essential that communities and governments take measures to reduce vulnerability to these events, including the implementation of early warning systems, the construction of flood-resistant infrastructure, and the promotion of sustainable soil management practices.
In addition, it is essential that further research is conducted to better understand the mechanisms behind floods and landslides, as well as to develop effective strategies to mitigate their impacts.
Source / Reference
This article was based on information from The Guardian Environment.