हिमालय में 'खतरा' बन रहा GLOF, मोरेन डैम लेक हैं जिम्मेदार, जानें कैसे लाती हैं तबाही

ETVBHARAT

सर्वे से पता चला है कि हिमालय क्षेत्रों में मोरेन डैम लेक सबसे ज्यादा खतरों को दावत देती हैं. उत्तराखंड में 150 ऐसी झीलें मौजूद.

Transcript

00:00In Uttarakhand's Himalayan region, there are 963 glaciers, while there are 1266 lakes.

00:17Due to the changes in these lakes, the Glacier Lake Outburst Flood is known as GLOF.

00:24In simple terms, the GLOF was the main reason behind the Kedarnath of 2013 and the Raini Flood of 2021.

00:34However, behind the GLOF is the Moraine Dam Lake, which is made up of glaciers, which is present in Uttarakhand as 150 lakes.

00:43The Moraine Dam Lake, which is located in front or next to the glacier, is considered to be more responsible for the GLOF.

00:51Glacier scientists also call it the most dangerous.

01:21Glacier is a common phenomenon, a common process.

01:25Earlier, there were not many glacial events, but there were some small glacial events that led to the formation of the GLOF.

01:33The GLOF is not formed today.

01:35The Glacier Lake was there earlier, and the process of the GLOF continues.

01:42Earlier, the acidity of the glaciers was low.

01:49So, if you ask the villagers, they sometimes say that a flood came here suddenly, and it broke so much that the glacier broke.

02:02They call it breaking more glaciers.

02:04So, it seems that this is not a new process.

02:09Although, according to the Glacier scientists, this process of GLOF is not a new thing.

02:15But in recent times, due to less snowfall and global warming, the Moraine Dam Lake is becoming more than the rapidly melting glaciers.

02:25But nowadays, when we talk about global warming, the size of the glacier is decreasing, the snowfall is decreasing, the ice melt is increasing.

02:36The Glacier Lake has become more than that.

02:38Secondly, there is a lot of friction with the glacier, which we call debris.

02:44Debris is also a big problem.

02:48Actually, there are two types of Glacier Lakes.

02:52One type of Glacier Lake is called Glacier Dam Lake, or Super Glacier Lake, or In-Glacier Lake.

03:01The second type of Glacier Lake is called Glacier Surrounding Lake.

03:05The Glacier Surrounding Lake is called Moraine Dam Lake.

03:09Because when the glacier comes, the Moraine Dam Lake is formed.

03:15The process of Moraine Dam Lake is as follows.

03:18When the glacier comes, it works like a dozer and throws the ice on its side.

03:27When the ice melts, what is left is in the Moraine Dam Lake.

03:31If you look at different faces, you can see the height of the glacier.

03:38The Moraine Dam Lake is formed in the middle of the glacier.

03:47Although the good thing is that the Super Glacier Lake is the largest of the 1266 lakes in Uttarakhand.

03:55Which is a temporary lake.

03:57That means there is no danger from them.

04:00Glacier lakes, there are 2-3 inventories in it.

04:04We did one inventory when we were in the Guardian Institute.

04:07We identified 1266 lakes.

04:10In high altitude?

04:12Yes, in high altitude.

04:13Glacier lakes.

04:14We also identified permanent lakes, like Nayan Tal, Bhim Tal.

04:19We identified such lakes.

04:21But their numbers are less.

04:23The maximum lakes we found were superglacial lakes.

04:28They form on top of glaciers.

04:30They are completely temporary lakes.

04:32So they are not dangerous?

04:34No, they form on top of glaciers.

04:38They disappear quickly.

04:40But if there is a glacial return,

04:42or if the water comes down to the glacier,

04:44then it can form a big lake.

04:47According to a survey,

04:49there are 150-127 moraine dam lakes in Uttarakhand.

04:53But they have not been classified as high-risk lakes.

04:56While in Himachal and Sikkim,

04:58some moraine dam lakes have been classified as high-risk.

05:02The moraine dam lakes are dangerous for the globe.

05:08Those lakes are moraine dam lakes.

05:10Their numbers are less.

05:12We identified about 150 lakes.

05:16But a Nepal IC mode survey did it.

05:20They identified the entire Himalayas.

05:22They identified the entire Himalayas.

05:24They identified the entire Himalayas.

05:26They identified the entire Himalayas.

05:28They identified the entire Himalayas.

05:30They identified the entire Himalayas.

05:32They identified the entire Himalayas.

05:34They identified the entire Himalayas.

05:36They identified the entire Himalayas.

05:38They identified the entire Himalayas.

05:40They identified the entire Himalayas.

05:42They identified the entire Himalayas.

05:44They identified the entire Himalayas.

05:46They identified the entire Himalayas.

05:48They identified the entire Himalayas.

05:50They identified the entire Himalayas.

05:52They identified the entire Himalayas.

05:54They identified the entire Himalayas.

05:56They identified the entire Himalayas.

05:58They identified the entire Himalayas.

06:00They identified the entire Himalayas.

06:02They identified the entire Himalayas.

06:04They identified the entire Himalayas.

06:06They identified the entire Himalayas.

06:08They identified the entire Himalayas.

06:10They identified the entire Himalayas.

06:12They identified the entire Himalayas.

06:14They identified the entire Himalayas.

06:16They identified the entire Himalayas.

06:18They identified the entire Himalayas.

06:20They identified the entire Himalayas.

06:22They identified the entire Himalayas.

06:24They identified the entire Himalayas.

06:26They identified the entire Himalayas.

06:28They identified the entire Himalayas.

06:30They identified the entire Himalayas.

06:32They identified the entire Himalayas.

06:34They identified the entire Himalayas.

06:36They identified the entire Himalayas.

06:38They identified the entire Himalayas.

06:40They identified the entire Himalayas.

06:42They identified the entire Himalayas.

06:44They identified the entire Himalayas.

06:46They identified the entire Himalayas.

06:48They identified the entire Himalayas.

06:50They identified the entire Himalayas.

06:52They identified the entire Himalayas.

06:54They identified the entire Himalayas.

06:56They identified the entire Himalayas.

06:58They identified the entire Himalayas.

07:00They identified the entire Himalayas.

07:02They identified the entire Himalayas.

07:04They identified the entire Himalayas.

07:06They identified the entire Himalayas.

07:08They identified the entire Himalayas.

07:10They identified the entire Himalayas.

07:12They identified the entire Himalayas.

07:14We do bathymetry there.

07:16We do bathymetry there.

07:18We also do manual survey.

07:20We also do manual survey.

07:22We also do manual survey.

07:24We also do manual survey.

07:26We also do manual survey.

07:28We also do manual survey.

07:30We also do manual survey.

07:32We also do manual survey.

07:34We also do manual survey.

07:36We also do manual survey.

07:38We also do manual survey.

07:40We also do manual survey.

07:42We also do manual survey.

07:44We also do manual survey.

07:46We also do manual survey.

07:48We also do manual survey.

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