Environment » Other - Environment » Is a landslide a natural disaster?

Is a landslide a natural disaster?

i need this right now


in a sense yes,
but it all depends to its source for example as if it is caused by humans such as building of dams, deforestation ( that would cause less adhesion between water molecule and less water retention time in soil) or by simply poor land managements

Only if humans or their houses are caught in it.

Of course. We have many landslides here in the Philippines. The worst one was in December 2003 when 3 landslides occurred in 3 locations within the province of Leyte which were only 5 kilometers in distance apart from each other and which happened in 30-minute or an hour intervals. Residents in the area heard a very loud explosion and thereafter, rumblings followed. Later, an investigation was made. Aerial pictorial showed that the locations were heavily forested. And the scenes of the landslides showed that the origins had big craters (like sink holes) and the path of slides were trails made by debris of trees that were felled & torn off.

According to our scientists as volcano & geological experts, these landslides were caused by the softening & loosening of the soils due to long days of heavy precipitations. Your replier reacted to this statement and gave his own analysis & evaluation. If these were softening & loosening of the soil,

First - There won't be a very loud explosion;
Second - There won't be any big & deep crater because the loosening must be like they were physically cut or chopped off.

In this vein, your replier ruled that decay microorganisms were responsible for these phenomena as explained hereunder (coming from my recent response to a question that was voted as best answer):

LANDSLIDES. The most common & known cause is the softening of the soil. But your replier had added another cause among many and this is compression of CO2 in the sub-soil. The gravity of the wet soil goes heavier, enclosing the pores of the soil and pressing the top soil down. The decay microbes will take all O2 in the subsoil, releasing CO2. Extreme CO2 will create higher energy as this gas bombards the walls of the sub-soil. The more the soil is compressed, CO2 has no choice but to escape. It will create a louder explosion. This case can also be attributed to sink holes, soil cracks, mudslides and others.

So, if you see landslides with similar data of facts in the scene, CO2-emitting decay microbes have caused the landslide. Case like this kind of natural disaster can be a permanent phenomenon in an abnormal, scald & sick environment brought about by global warming & climate change.

yes it is,until and unless it is not caused because of human activities.let me give you an example-
1-if a landslide is there because of heavy rain,we will say that it was a natural disaster.

2-if a landslide takes place because of construction,etc then it is not counted as a natural disaster.
hope you got my point.:]

yes..................its natural disaster.

India is vulnerable to different natural hazards due to
its proximity to geodynamically active locales and unique
climatic pattern. Both these factors in different combinations
lead to the occurrence of disasters resulting from natural
hazards like floods, earthquakes, draught, cyclones and
landslides in different parts of the country at frequent
intervals. It is estimated that about 60% of landmass of the
country is vulnerable to earthquakes of different magnitudes;
about 8% of total area is susceptible to cyclone hazard; about
68% of the area is draught prone; 12% of area is susceptible
to floods and approximately 15% of total area of the country
is susceptible to landslides. The disaster situation in the
country is further compounded by increased vulnerabilities
r e l a t e d t o r a p i d l y g r owi n g p o p u l a t i o n , u n p l a n n e d
urbanization and fast-paced industrialization, rapid
development in high risk areas, environmental degradation
and climate change. It is observed that impact of natural
disasters is felt more severely by people who are socioeconomically weak because their habitats are located in
vulnerable areas and not designed to withstand the impact
of natural disasters. Therefore, the processes of poverty
eradication and disaster management are intricately linked.
The severity of natural disasters in the country is
indicated by the estimate of the Ministry of Home Affairs
which states that in the decade 1990-2000, annually, an
average of about 4344 people lost their lives and about 30
million people were affected by disasters. In recent years,
a rising trend in both natural as well as man made disasters
is evident. Statistics indicates that during 1994-1998,
approximately 120 million were affected by the natural
disasters and economic losses resulting from same during
the period were estimated to be Rs. 286780 million. These
figures climbed to 560 million and Rs. 474640 million during