Gla­cial lake out­burst

Bhutan Times - - Editorial -

T he gla­cial lake out­burst of the Lemthang Lake last Sun­day has taught us many lessons.There was a gen­eral panic as the sirens were heard through the val­ley. The peo­ple in the lower level were moved to the higher level. It has been re­ported that some bridges has been washed away mak­ing Laya cut from the rest of the Dzongkhags and the coun­try. The restora­tion is said to take about two months,

The Home min­is­ter tweeted that His Majesty the King has most gra­ciously com­manded the Royal Bhutan Army for re­con­struc­tion of the Tong­sho bridge over the Mochu which was washed away by the flood along with sev­eral other smaller bridges in Laya. It comes at a time when all the able-bod­ied peo­ple of Laya are out in the moun­tains col­lect­ing Cordy­ceps and are stranded with­out the bridges con­nect­ing to their vil­lages. Laya stands to­tally cut off from Gasa or Lingzhi af­ter the Shinchey La lake out­burst.

The restora­tion of the bridges over Tongt­sho has al­ready started with the 23 army per­son­nel from Wang­due and as per the Dzongkhags of­fi­cials all the re­quired ma­te­ri­als has reached the site. And is ex­pected that Laya will be con­nected within a month or so.

As Bhutan has more than 2,674 gla­cial lakes and 25 of them are rated as po­ten­tially dan­ger­ous gla­cial lakes. Lemthang Lake which burst last week is also cat­e­go­rized as dan­ger­ous one and gov­ern­ment has promised that it will carry out the as­sess­ment of all dan­ger­ous gla­cial lakes within the coun­try and in­stall sirens sys­tems in all the po­ten­tial dan­ger­ous gla­cial lakes.

On the other hand a re­search car­ried out by the in­ter­na­tional or­ga­ni­za­tions stated that one of the rea­sons for the out­burst of gla­cial lake is the rise in tem­per­a­ture and earth­quake. It states that with the rise tem­per­a­ture the sun will even­tu­ally hit the newly ex­posed ice. Af­ter the sun melts the ice and end up cre­at­ing a pos­si­ble flood which in pre­vent­ing is dif­fi­cult.

In or­der pre­vent that we may have to re­frain from do­ing all things that leads to global warm­ing, ar­ti­fi­cial deep­en­ing of the spill way and low­er­ing of the wa­ter level by ar­ti­fi­cial means. The other means would be to in­stall ef­fec­tive early flood warn­ing sys­tems that will save the life of many peo­ple, an­i­mal and prop­erty.

How­ever on the other hand it is equally im­por­tant to pre­pare the in­ven­to­ries of the gla­cial lakes and iden­tify for fur­ther in­ves­ti­ga­tions. A lake mon­i­tor­ing sys­tem is de­signed and im­ple­mented. A set of in­di­ca­tors may be de­signed to clas­sify the lakes ac­cord­ing to the risk. Af­ter that upon the method cho­sen, the site in­ves­ti­ga­tions are car­ried out and the lake drainage de­signed and im­ple­mented to save life and prop­erty.

Newspapers in English

Newspapers from Bhutan

© PressReader. All rights reserved.