Asia

Nepal earthquakes: Devastation in maps and images

  • 15 May 2015
  • From the section Asia

Thousands of people lost their lives and thousands more were injured in a 7.8-magnitude earthquake that hit Nepal's capital Kathmandu and its surrounding areas on 25 April.

The earthquake was followed by a large number of aftershocks, including one that measured 7.3 on 12 May.

Animated map: The earthquake and its 120 aftershocks

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Daily earthquake chart

Among the worst-hit districts was Sindhupalchok - where more than 2,000 died. In the capital, Kathmandu, more than 1,000 perished. Thousands more were badly injured by falling debris caused by the quake or powerful aftershocks that rocked the region. Mount Everest was also struck by deadly avalanches after the quake on 25 April.

Worst-affected areas

Map showing the Nepal earthquake zone

Since then, people are living in makeshift camps around Kathmandu, having been made homeless by the quake or because they are too afraid to stay inside. Some have tried to leave the capital amid fears of further aftershocks.

Many of the country's historic sites have been severely damaged, including temples and monuments.

Kathmandu

Analysis of satellite imagery captured before and after the devastating quake reveals that more than 180 buildings in the densely populated city centre were destroyed.

At least four out of seven Unesco World Heritage sites in the Kathmandu valley - three of them ancient city squares - were badly affected.

Building damage in Kathmandu: 27 April 2015

building damage in Kathmandu following Nepal earthquake

Dharahara tower, Kathmandu: 27 October 1998 and 26 April 2015

Dharahara tower before and after the quake Image copyright AFP, Getty, EPA
Image caption Dharahara tower, Kathmandu: 27 October 1998 and 26 April 2015

The capital's Durbar Square - the royal Nepalese residence until the 19th century - has also suffered, with many buildings reduced to rubble.

Durbar Square, Kathmandu: via satellite before and after the quake

Durbar Square, Kathmandu before and after the quake Image copyright CNES, Airbus, Pleiades

Durbar Square, Kathmandu: February 2015

Basantapor before the quake Image copyright Google

Durbar Square, Kathmandu: 27 April 2015

Basantapor after the quake Image copyright Getty Images

Temporary shelters have been set up on open spaces in the city - such as fields and stadiums. They offer some protection to families who have lost their homes or those too scared to stay inside after the quake and powerful aftershocks.

'Tent city': field in Kathmandu via satellite before and after the quake

Field in Kathmandu filled with tents and temporary structures following quake Image copyright CNES, Airbus, Pleiades

Narayanhiti Palace, Kathmandu: via satellite before and after the quake

x Image copyright CNES, Airbus, Pleiades
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Bhaktapur

In Bhaktapur, which had been the country's best preserved old city, initial reports claim half of all buildings have been destroyed and 80% of temples damaged.

The ancient city, one of the worst-affected areas, lies to the east of the capital.

Durbar Square, Bhaktapur: February 2015

Bhaktapur's Durbar Square before the quake Image copyright Google

Durbar Square, Bhaktapur: April 2015

Bhaktapur's Durbar Square after the quake Image copyright AP
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Search and rescue operation

International teams of rescuers and medical experts are arriving in Nepal to help hunt and care for earthquake survivors.

INTERACTIVE
  • How a search and rescue operation is carried out

    ×
  • Strong buildings

    ×

    Rescue workers need to be swift to assess where they are most likely to find survivors inside collapsed buildings. Stairwells or the spaces under large concrete beams can provide what rescue workers call 'voids', in which people may have survived.

  • Video cameras

    ×

    Video cameras placed on the end of flexible poles can be squeezed through gaps in the rubble to help locate survivors. Using this technique means time is saved as less rubble is shifted unnecessarily. Thermal imaging equipment can also be used to locate survivors as their body heat can warm the rubble around them.

  • Listening for survivors

    ×

    Specialist sound equipment can detect the faintest of noises to within a few metres. Silence on the site is needed while a member of the rescue team bangs three times and hopes to hear a response. Carbon dioxide detectors can be used to find survivors rendered unconscious. They work best in confined spaces where they detect the greater CO2 concentration in the air exhaled by those still breathing.

  • Weak buildings

    ×

    Many of the buildings in Nepal collapsed in the initial earthquake or the aftershock. Many older neighbourhoods in the capital, Kathmandu, were made up of poorly-constructed brick buildings and these were largely destroyed in the disaster. Fewer, modern structures collapsed.

  • Local knowledge

    ×

    Local people often know the best locations to begin the search for survivors. After speaking to them rescue workers can quickly select the most promising place to begin their work. Many local people have also joined in the search for survivors.

  • Search and rescue

    ×

    The co-ordinating agency, usually the UN, and the host country, have to take the difficult decision of when to stop looking for a few remaining trapped people and concentrate resources on looking after the thousands of other survivors. The average time for this switch is between five and seven days, but individuals have been known to survive as long as 13 days, if they have access to water.

  • Rescue dogs

    ×

    Dogs are extremely effective at using their sense of smell to pick up on signs of life that human rescuers cannot. They are also able to cover large areas quickly, speeding up the search and rescue process.

  • Lifting equipment

    ×

    Diggers and hydraulic jacks are among the heavy machinery that rescue workers employ to shift rubble. Large concrete slabs on the outside of buildings can be pulled aside by diggers, enabling rescuers to get a view of any people still trapped inside. Rescue workers are also taking chainsaws and other power tools to cut through wreckage.

  • Shifting rubble

    ×

    Before the heavy-lifting equipment arrives, rescuers use pick axes and shovels to dig through the rubble. Other tools used by rescuers include chainsaws, disc-cutters and rebar cutters - which can be used to tackle the metal bars in reinforced concrete.

The United Nations, which estimates 6.6 million people live in the districts affected by the earthquake, is helping to co-ordinate rescue efforts.

Many have been left homeless by the disaster and the country is already reported to be running out of water and food. There are also frequent power cuts.

The British organisation, Search and Rescue Assistance in Disasters (SARAID) has sent a team of experts with 1.5 tonnes of specialist equipment. This includes an electrical power generator and power tools for cutting through concrete and steel.

They also have their own tents and food supplies, so they will not be a drain on local resources.

India and China are among the other countries to send teams of rescuers.

How a search and rescue operation is carried out

Illustration of how a search and rescue operation is carried out

Strong buildings

Rubble Image copyright Getty Images

Rescue workers need to be swift to assess where they are most likely to find survivors inside collapsed buildings. Stairwells or the spaces under large concrete beams can provide what rescue workers call 'voids', or gaps in which people may have survived.

Video cameras

Video camera Image copyright PA

Video cameras placed on the end of flexible poles can be squeezed through gaps in the rubble to help locate survivors. Using this technique means time is saved as less rubble is shifted unnecessarily. Thermal imaging equipment can also be used to locate survivors as their body heat can warm the rubble around them.

Listening for survivors

Rescue workers checking bags Image copyright Getty Images

Specialist sound equipment can detect the faintest of noises to within a few metres. Silence on the site is needed while a member of the rescue team bangs three times and hopes to hear a response. Carbon dioxide detectors can be used to find survivors rendered unconscious. They work best in confined spaces where they detect the greater CO2 concentration in the air exhaled by those still breathing.

Weak buildings

Rubble Image copyright EPA

Many of the buildings in Nepal collapsed in the initial earthquake or the aftershocks. Many older neighbourhoods in the capital, Kathmandu, were made up of poorly-constructed brick buildings and these were largely destroyed in the disaster. Fewer, modern structures collapsed.

Local knowledge

People forming human chain Image copyright Getty Images

Local people often know the best locations to begin the search for survivors. After speaking to them rescue workers can quickly select the most promising place to begin their work. Many local people have also joined in the search for survivors.

Search and rescue

Seraching in the rubble Image copyright Reuters

The co-ordinating agency, usually the UN, and the host country, have to take the difficult decision of when to stop looking for a few remaining trapped people and concentrate resources on looking after the thousands of other survivors. The average time for this switch is between five and seven days, but trapped individuals have been known to survive as long as 13 days, if they have access to water.

Rescue dogs

Rescue dogs Image copyright Getty Images

Dogs are extremely effective at using their sense of smell to pick up on signs of life that human rescuers cannot. They are also able to cover large areas quickly, speeding up the search and rescue process.

Lifting equipment

~Digger Image copyright AFP

Diggers and hydraulic jacks are among the heavy machinery that rescue workers employ to shift rubble. Large concrete slabs on the outside of buildings can be pulled aside by diggers, enabling rescuers to get a view of any people still trapped inside. Rescue workers are also taking chainsaws and other power tools to cut through wreckage.

Shifting rubble

Rescuers using shovels Image copyright Reuters

Before the heavy-lifting equipment arrives, rescuers use pick axes and shovels to dig through the rubble. Other tools used by rescuers include chainsaws, disc-cutters and rebar cutters - which can be used to tackle the metal bars in reinforced concrete.

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