Natural Disasters

The term 'Disaster' occurs with such tragic frequency in news reports today, that it seems superfluous to define it. 'Official' definitions are suggested by the United nations and  the Disaster Management Act. Simply put, a disaster is a  rapidly occuring event that leads to loss of lives and property.  Loss is the defining characteristic of a disaster. With the exception of industrial and other manmnade accidents, the cataclysmic events that lead to this loss are necessary landforming mechanisms.

Earthquakes, floods and resultant landslides, cyclones, and other such events are the processes through which the  earth relieves pressure that might be building up in the crust, reforms river beds, and relieves buildup of atmospheric pressure. When humans are caught in the midst of these events and suffer damage and loss, the events are termed disasters. 

It is not to be denied that these events can be catastrophic in their impact.  The Bhola cyclone, in 1970, caused the deaths of 5 lakh people in India. Three decades later, the Orissa cyclone in 1999 killed 10,000 people.
1. Types of disastersNatural Disasters Infographic (Source: Alexandra Curtis)
Disasters, events that lead to a considerable loss of  life and property, can occur in several ways. The broadest means of  classfication are as manmade and natural disasters. Manmade disasters include industrial and chemical disasters, stampedes, nuclear emergencies, transportation accidents (road, rail, air  and sea), and mines. These, while important, are not withing the purview of the India Water Portal. The discussion therefore will be confined to natural disasters. Natural disasters of course can be exacerbated by human interference such as in the case of landslides which are intensified by  blasting in mountain areas, and floods which are intensified by inappropriate channelization of  river courses.

2. Dealing with disasters:
Traditional means of managing disasters has been confined to response. This is the  rescue and aid that is given immediately after an event. In some cases, rehabilitation has been done, which is ensuring that the aid that disaster  victims need to begin their lives over again is available. In recent years though, the purview of  disaster management has expanded across the continuum of disasters to include mitigation and reconstruction. These now include:

  • Prevention and mitigation
  • Preparedness and response
  • Recovery, reconstruction and rehabilitation

3. Institutional framework in India
Disaster management in India was earlier predominantly focused towards responding to requests for aid after a disaster. However, the nineties saw  series of catastrophic events which led to the creation of a holistic policy of disaster management. The National Disaster Management Authority (NDMA) was established with the vision of a disaster- resilient India; created by enabling prevention, mitigation, preparedness, and effective response (National Disaster Management Authority, 2009).   They recommend the inclusion of disaster prevention, mitigation and preparedness activities within the scheme of disaster management. The  NDMA also recommends several measures at various levels from the national to the individual. A crucial part of these is the formation of State Disaster Management Authorities which oversee the implementation of  the NDMA policies in their states. An important part of the institutional framework to deal with disasters is the emergence of community-led institutions. These range from pan-regional networks such as HYCOS in  the Hindu Kush Himalayas to the village-based flood alert systems seen in Assam. These are explained in David Molden's talk below:

 

4. Voluntary organisations
Despite the existence of the National Disaster Response Force, the first responders on the scene are often local communities and voluntary organisations. The outpouring of support that one sees in the immediate aftermath of a disaster is a matter of pride for the nation, as citizens rally together to support the stricken communities. Local communities do stellar work in immediate rescue of afflicted people. This is especially crucial during landslides in the mountains when afflicted areas can be rendered inaccessible. Communities  that are farther away from the scene of the disaster also rally around when it comes to the  donation of supplies such as food, clothing and shelter. However this  community-driven and impulsive response is largely confined to the rescue and response stages. The delivery of relief material can also be inefficiently handled due to the inexperience of the people dealing with the situation.

It is here that voluntary organisations come to the forefront. They usually have a network of contacts and are able to mobilise both goods and personnel in an efficient manner. Past disasters such as the Latur Earthquake, Leh Landslides, and Uttarakhand floods have seen all manner of voluntary organisations from NGOs to religious trusts offer support, time, and goods. Voluntary organisations also offer more than just the supply of immediately required food and clothing by assisting with construction of shelters, medical aid, and provision of sanitary facilities.

This is best offered by non-political volunteer networks and organisations that are largely devoted to the provision of disaster relief. These have access to highly skilled personnel, donor agencies, and government networks which enable them to provide superlative assistance as and when needed.

RedR is such a network composed  of engineers. Volunteers with RedR participate in regular training which enable them to offer skilled assistance in times of disaster. Medicins Sans Frontiers is a network of doctors who provide skilled medical care in times of disaster and strife.

2.  Personal responsibility
A large part of the casualties during disasters can be prevented by taking a few steps. After all, the first person present at the scene of an accident is the accident victim. While some events may have some warning, it is always better to be prepared for the unforseeable.

Please see below for some tips 'Do's & Dont's to protect yourself and your family in case of an emergency: 

Earthquake         Tsunami        Landslide         Biological            Floods           Cyclone          Nuclear            Heat Wave       Chemical Disaster

 


 

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A one-meter sea level rise will inundate 6000 square kilometers in India, of which Mumbai, Kolkata and Chennai will be the major cities being affected. This would mean losses of billions of dollars in infrastructural, social, physical assets and capital. Posted on 26 Aug, 2009 05:34 PM

125 million people are likely to migrate in the coming century of which 75 million will be from Bangladesh. The people from Bangladesh will most likely migrate to India in addition to our own 50 to 60 million people who will be displaced due to sea-level rise, shrinking water sources due to CC in the densely populated coastal regions of India.

Megh Pyne Abhiyan: An initiative to promote rainwater harvesting to provide safe drinking water during floods
A brief introduction to what drives the Megh Pyne Abhiyan Posted on 21 Aug, 2009 12:15 PM

Megh Pyne Abhiyan - Baadh prabhavit sthalon mein varsha jal sangrahan

Read more about the effort in Hindi

Satellite map images showing the impact of the 2004 Tsunami on Tamil Nadu
Satellite images from UNOSAT show the impact of the 2004 Tsunami at different locations on the Tamil Nadu coast Posted on 18 Aug, 2009 11:08 AM

These "before-after" satellite map images from the UNOSAT website depict the impact of the 2004 Tsunami on the Tamil Nadu coast.

Satellite maps of the flood affected areas in the state of Bihar (2007 and 2008)
Map from UNOSAT of the flood affected areas in Bihar Posted on 12 Aug, 2009 12:56 PM

These images from the UNOSAT site, are an example of flood detection based on satellite maps of the affected state of Bihar, both in 2007 and 2008. These maps are based on preliminary analysis and not validated in the field.

Impact of the 2004 Tsunami on the Nicobar Islands
The before-after satellite imagery from National Remote Sensing Agency depicting the impact of 2004 Tsunami on Nicobar Islands Posted on 11 Aug, 2009 11:41 AM

These "before-after" satellite map images from the UNOSAT website depict the impact of the 2004 Tsunami on the Nicobar Islands.

Map showing the site where river Bagmati breached its embankments in Sitamarhi, Bihar in 2009
Mpa showing the spot near Tajpur in Sitamarhi where the Bagmati breached its embankments Posted on 04 Aug, 2009 09:50 AM

The following map from South Asia Network on Dams Rivers & People gives a schematic sketch of the Bagmati Breach site near Tajpur in Bihar’s Sitamarhi district.   

Pictures from the Bagmati embankment breach in Bihar in 2009
These photos were taken by NGO Ghoghardiha Prakhand Swarajya Vikas Sangh, Madhubani Posted on 03 Aug, 2009 10:10 AM

The google map at this URL shows Runi Sayedpur and Sitamarhi, along national highway 77: http://tinyurl.com/lxwfmj

Background documents on the Bagmati embankment breach: Article and presentation
Article and presentations on the Bagmati and its embankments from the Central Water Commission and well known scholar Dinesh Kumar Mishra Posted on 03 Aug, 2009 09:46 AM

1) A presentation from the Central Water Commission of the Government of India studying the flood problem on the Bagmati and making some recommendations:

flood-management-in-bagmati-basin

Cyclone Aila 2009
Cyclone Aila Posted on 01 Jun, 2009 11:27 AM

Tropical Storm Aila struck southern Bangladesh and eastern India on May 27, 2009. The New York Times reported that floods and mudslides killed at least 191 people and left hundreds of thousands more homeless. As of May 27, the death toll was expected to rise. Images from The Nasa Earth Observatory.

aila_tmo_2009145

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite captured this true-color image of Aila on May 25, 2009, the same day that the storm temporarily strengthened to a Category 1 cyclone. Aila almost completely fills this scene, stretching from the Bay of Bengal deep into India, Bangladesh, and Burma (Myanmar). On May 25, Aila's wind speeds ranged from 74 kilometers per hour (46 miles per hour or 40 knots) to 120 kilometers per hour (75 miles per hour or 65 knots). More information and detailed images can be accessed here:Cyclone Aila

NASA Earth Observatory: Cyclone Bijli
A ragged-looking Tropical Storm Bijli draped the east coast of India in this image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite on April 16, 2009. Posted on 07 May, 2009 12:03 PM

Image & Content Courtesy: NASA Earth Observatory

A ragged-looking Tropical Storm Bijli draped the east coast of India in this image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Terra satellite on April 16, 2009. Bijli became a tropical storm in the northwest Bay of Bengal on April 15, and initially headed north, toward the west coast of India. By April 16, it had begun a northeastward turn, however, and the storm was being projected to make landfall in eastern Bangladesh on April 17, according to Unisys. Access higher resolution image here:Cyclone Bijli

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