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.
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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.