subsidence and sinkholes

 Hello Everybody!

Afghanistan like many regions around the world, face almost all of the geological hazards, one of which is subsidence and sinkholes. the gradual sinking or settling of the earth's surface often caused by the collapse of underground voids while holes that form when the ground collapses due the dissolution of soluble rocks it is called Subsidence. these rocks can be limestone, gypsum or salt. 

In Afghanistan subsidence and sinkholes mostly occur in areas with soluble rock formations, such as limestones regions in parts of the country. which groundwater weakens the underlaying structure. Over time this can lead formation of sinkholes. 

The sinkholes can damage roads, buildings and other infrastructure. 

Afghanistan has taken several measures to prevent subsidence and sinkholes and to raise awareness among the people. some of these initiatives include:

1. Geological Surveys: doing comprehensive geological surveys to identify areas prone to subsidence and sinkholes. these surveys help in mapping regions and finding out sinkholes and subsidence and their hazards.
 
2. Educating the people; Efforts are made to inform people about the danger of subsidence and sinkholes and the preventive measures they can take. 

3. Monitoring Earthquakes; Afghanistan uses monitoring systems to detect subsidence and sinkholes and share them with people.
 
4. International Cooperation; Afghanistan collaborates with other nations and organizations to enhance its understanding of subsidence and sinkholes and improve disaster readiness.
 
Even though Afghanistan still has a tough time dealing with subsidence and sinkholes because of problems like complex challenge and the country being hard to get around.

https://www.mdpi.com/2072-4292/12/15/2461

Landslides & Avalanches

 

Afghanistan, characterized by its diverse geology, is prone to various natural hazards, including mass wasting such as landslides and avalanches. These hazards are exacerbated by factors such as steep slopes, seismic activity, deforestation, making many regions susceptible to sudden slope failures.

1.    1.   Landslides: Afghanistan’s mountainous landscape predisposes it to landslides which can be triggered by heavy rainfall, snowmelt, earthquakes, or human activities such as deforestation and construction. Afghanistan experiences landslides predominantly during wet seasons, posing a threat to communities living in mountainous areas.

2.   2.    Avalanches: in winter months are so common occurring in high altitudes regions, particularly in Hindu Kush and Pamir Mountain ranges. Heavy snowfall coupled with steep slopes make these areas prone to avalanches, endangering settlements, and transportation routes.

To mitigate the danger or risks associated with mass wasting hazards and enhance community resilience, Afghanistan has been undertaking various initiatives >>

a)    a)      Risk Assessment and monitoring: Afghanistan with the support of international organizations and donors, conducts risk assessments to identify vulnerable areas and assess the likelihood of mass wasting events.

b)  b)       Early Warning Systems: efforts have been made to establish early warning systems to alert communities about imminent landslide and avalanches threats.

c)  c)        Infrastructure Development: Afghanistan invest a lot in infrastructure to minimize the impacts of mass wasting events. Building and maintaining roads, bridges and retaining walls with proper engineering standards.

d)  d)       Community Preparedness and Education: Afghanistan made programs to aim raise awareness about the risks associated with mass wasting hazards and educate people on evacuation procedures and safe practices.

Despite these efforts, challenges remain, including limited resources, inadequate infrastructure, and the ongoing conflict situation in certain parts of Afghanistan.

The link below shows one of the landslides that happen in Afghanistan >>

https://www.cnn.com/2014/05/05/world/asia/afghanistan-landslide/index.html

https://www.researchgate.net/figure/Photo-of-Abe-Barek-landslide-photo-Fardin-Waezi-UNAMA-UN-2014_fig4_276859687