Latest News

UN official warns that the Himalayas are at risk of severe glacial flooding in the years to come

UN official warns that the Himalayas are at risk of severe glacial flooding in the years to come
UN official warns that the Himalayas are at risk of severe glacial flooding in the years to come

A senior U.N. official has warned that the Himalayan region is at risk of future 'glacial floods'. This comes as the death toll in Nepal's 'last' week's' flood, which was triggered by an iceberg's collapse, exceeded 1,000.

Hydroelectric power is not the only thing at risk. Riverbanks, where millions of people live, could become uninhabitable.

Kanni Wignaraja is an assistant secretary general at the U.N. She told?prenezzeugsprach?sprachhnen in an interview, "Technology cannot keep up to date with the U. or the U.N. In an interview, Kanni Wignaraja, assistant secretary-general at the U.N. said: "Technology cannot move fast enough to prevent loss along these massive river systems that catch the overflow of glacier lakes."

Researchers found 47 glacial lakes that could be dangerous in Nepal, China, and India by 2020. Since then, the real number has been estimated to have been significantly higher.

Wignaraja who is also regional director for Asia and the Pacific of the United Nations Development Programme, said that the population at risk "goes up into the millions". She cited the latest data collected by UNDP and its partner organisations in June.

The devastating flood in Nepal last week was caused by a glacier that collapsed near the Langtang Lirung peak and fell to the valley's floor. This triggered a landslide which sent a wave of water down the Trishuli River.

Outbursts of glacier lakes are a different phenomenon. They occur when melting glacier waters build up behind a barrier. The pressure builds until it eventually causes a rupture or overflow, causing a flash flooding downstream.

U.N. officials warn that both threats are increasing as climate change accelerates the melting of glaciers in the region. This loosens rocks and puts a greater pressure on the glacier lake barriers.

Wignaraja added that the region's mountain ranges are relatively young and more susceptible to tectonic movements, which can cause sudden glacier or?lake?barrier collapses.

NEPAL IS HIGHLY DEPENDENT UPON GLACIERS

Researchers have discovered potentially dangerous glacial ponds in large areas of the?Hindu Kush?region.

Wignaraja stated that no country in this region relies more on the glaciers to provide water and generate income than Nepal. The country is now facing "some very,?hard decisions". Many people who live near rivers may find it difficult to move higher up.

The critical infrastructure will remain vulnerable. Nepal's power loss could be greater than some estimates suggest. UNDP reported that the flood had 'taken out 15 major power plants?underconstruction, in addition those already in operation.

Wignaraja said that new technology could make electrical networks and hydropower stations more resistant to flooding.

The "mud and ice tsunami" of last week would have overcome all defences. She said that no amount of construction could have prevented this.

(source: Reuters)