Recent Disasters Man-Made Disasters The difference between natural and man-made disasters is the element of human intent or negligence that leads to human suffering and environmental damage; many mirror natural disasters, yet man has a direct hand in their occurrence. These are the net result of inadequately managed man-made hazards and they typically cost the most in terms of human suffering, loss of life and long-term damage to a country's economy and productive capacity. Not only did 11 men lose their lives, but the ecosystem in that area was devastated. Part of the reason it is hard to get over is due to the deception surrounding the event.
Earthquakes, floods and landslides, etc. In recent years these hazards took toll of thousands of lives and caused massive destruction of property.
These have adversely affected the vital sectors of our development as agriculture, communication, irrigation, power projects and rural and urban settlements. The time and cost overrun in some cases have been enormous but their indirect impact on our economy has never been calculated.
The unique geo-climatic conditions have exposed this country to natural catastrophes. Disasters can be defined as a sudden, accidental event of great magnitude that causes considerable damage to life and property. They are sudden, drastic and normally occur without any alarm or warning.
Some disasters may be short lived such as earthquakes and some other may be of long duration, such as floods.
However, irrespective of the duration of a disaster, the damage in the form of deaths, injuries and losses of property is immense.
The magnitude of the disasters can be judged by the fact that only during the past two decades, occurrences of floods, earthquakes, landslides, cyclones, etc.
Most of the disasters have a natural origin, however, some disasters are manmade as well. On this basis, disasters can be broadly classified into two groups: When disasters occur due to natural forces they are called natural disasters, over which man has hardly any control.
Some common natural disasters are earthquakes, landslides floods, droughts, cyclones, etc. Tsunamis, volcanic eruptions and wildfires are also included under natural disasters. These disasters cause enormous loss to life and property. Common examples of these disasters are train accidents, aero plane crashes, collapse of buildings, bridges, mines, tunnels, etc.
Some of the common natural disasters, their impact on environment, and their prevention, control and mitigation are discussed below: Ever since it came into existence 4. The earth is primarily composed of three layers: The outer crust, 2. These pieces are called tectonic plates.
These plates are in continuous motion over the mantle, which is known as tectonic movements. These tectonic processes are also responsible for the mountain building processes. The plates that are moving past over one another are slowed by friction along their boundaries.
Due to this, the rocks are under strain. When the stress on the rocks exceeds certain limits, the rocks rupture and form a fault along which the rocks are displaced during tectonic movements.
This sudden rupture of the rocks releases energy in the form of earthquake waves Fig. Thus earthquake is a form of energy, which is transmitted to the surface of the earth in the form of waves called seismic waves.
Scientists who study earthquakes are called seismologists. The instrument that records the seismic waves is called seismograph. The exact spot under the earth surface at which an earthquake originates is called the focus or hypocenter.
The point on the earth surface above the focus is called the epicenter. The Richter scale is used to measure the intensity of earthquakes. The intensity is measured on a scale of 0 to 8 and above Table Impact of Earthquake on the Environment: The destruction, an earthquake causes, depends on its magnitude and duration or the amount of shaking that occurs.
In the last years, earthquakes around the world have killed several million people. Earthquake is one of the most catastrophic natural disasters. Massive loss of life and property occurs due to collapse of buildings.
Besides, roads, bridges, canals, electric poles, etc. Certain regions of the earth are more prone to earthquakes. These are places located in the unstable regions of the earth crust, which are subjected to tectonic activities.man-made-disasters - regardbouddhiste.com Man-made disasters.
Human-instigated disasters are the consequence of technological hazards. UN-SPIDER, the United Nations Programme for Space-based Information for Disaster Management and Emergency Response], a project of the United Nations Office for Outer Space Affairs (UNOOSA).
In this text we will discuss these two disasters, along with correcting a few common misconceptions about nuclear accidents. The worst type of man-made disaster is caused by the use of nuclear weapons. man-made-disasters - regardbouddhiste.com Types of Disasters Disasters can take many different forms, and the duration can range from an hourly disruption to days or weeks of ongoing destruction.
Below is a list of the various types of disasters – both natural and man-made or technological in nature – that can impact a community.
Man Made Disaster: These are mostly caused due to certain human activities. The disasters themselves could be unintentional, but, .