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Earthquake of magnitude 4.5 strikes Tibet

Earthquake of magnitude 4.5 strikes Tibet

Time of India3 days ago
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Tibet: An earthquake of magnitude 4.5 struck Tibet on Sunday, statement by the National Center for Seismology (NCS) said.As per the statement, the earthquake occurred at a shallow depth of 10km, making it susceptible to aftershocks.In a post on X, the NCS said, "EQ of M: 4.5, On: 03/08/2025 09:17:04 IST, Lat: 29.76 N, Long: 92.55 E, Depth: 10 Km, Location: Tibet."https://x.com/NCS_Earthquake/status/1951859948452737518Earlier on July 30, two earthquakes struck Tibet.One being of 4.0, and the other being 4.3 magnitude on the Richter Scale.In a post on X, the NCS said, "EQ of M: 4.0, On: 30/07/2025 11:31:02 IST, Lat: 28.32 N, Long: 87.65 E, Depth: 10 Km, Location: Tibet."https://x.com/NCS_Earthquake/status/1950439501844926911"EQ of M: 4.3, On: 30/07/2025 06:58:42 IST, Lat: 28.36 N, Long: 87.68 E, Depth: 10 Km, Location: Tibet."https://x.com/NCS_Earthquake/status/1950370340711886948Shallow earthquakes are generally more dangerous than deep earthquakes. This is because the seismic waves from shallow earthquakes have a shorter distance to travel to the surface, resulting in stronger ground shaking and potentially more damage to structures and greater casualties.The Tibetan Plateau is known for its seismic activity due to tectonic plate collisions.Tibet and Nepal lie on a major geological fault line where the Indian tectonic plate pushes up into the Eurasian plate, and earthquakes are a regular occurrence as a result of it. The region is seismically active due to tectonic uplifts that can grow strong enough to change the heights of the Himalayas' peaks.Meanwhile, downpour in Tibet early on Wednesday morning triggered flood in rivers flowing in Nepal, prompting authorities to issue warning in three districts.The district of Rasuwa, adjoining the Tibetan side which was hit by a flash flood on July 8 had claimed seven lives with over a dozen still missing, after Lhende River swept infrastructure near Nepal-China border.Heavy rainfall in Tibet earlier this morning has triggered flooding in the Trishuli River, raising water levels in areas around Uttar Gaya in Rasuwa and the Trishuli 3B Hub in Kispang. Authorities have issued warnings as water flow continues to rise in the Rasuwagadhi area.
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Not a cloudburst? If Uttarkashi didn't see heavy rain, here's what experts say may have caused Dharali's deadly flood
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  • Time of India

Not a cloudburst? If Uttarkashi didn't see heavy rain, here's what experts say may have caused Dharali's deadly flood

Satellite Images Show Glacier and Lakes Above Dharali Live Events Uttarakhand's Glacial Lake Risk (You can now subscribe to our (You can now subscribe to our Economic Times WhatsApp channel The flash flood that tore through Dharali village in Uttarkashi on Tuesday may not have been caused by a cloudburst, as initially believed. According to experts and scientists studying satellite and meteorological data, the true cause was likely a glacier collapse or a glacial lake reported by TOI, researchers found minimal rainfall in the region around the time of the incident, which cast doubt on the cloudburst theory. The Indian Meteorological Department (IMD) recorded only 6.5mm of rain in Harsil and 11mm in Bhatwari over 24 hours, far below the typical levels associated with cloudburst-triggered scientist at IMD's regional centre Rohit Thapliyal told TOI, "Only very light to light rain was observed in the affected area over 24 hours. The highest rainfall anywhere in Uttarkashi was merely 27mm."Another senior scientist added that such low rainfall amounts were not enough to trigger floods of this scale. 'It suggests a more powerful event like a glacial lake outburst flood (GLOF) or glacier burst,' the expert accessed satellite images that showed significant glaciers and at least two glacial lakes directly above Dharali. One of these lakes is located just above the Kheer Gad stream, which runs near the village.A scientist told TOI, 'If water was suddenly released due to a glacier collapse or lake burst, it could easily result in a high-energy flash flood, similar to what happened during the Raini disaster in Chamoli back in February 2021.'In the Raini incident, a rock-ice avalanche triggered massive floods, destroying the Rishiganga hydel project and damaging the Tapovan-Vishnugad power plant, with over 200 people losing their to the Wadia Institute of Himalayan Geology, Uttarakhand has over 1,260 glacial lakes, some of which pose major downstream threats. The National Disaster Management Authority (NDMA) has flagged 13 of these as high-risk, with five marked as extremely geologist and former executive director of the Uttarakhand Disaster Management Authority, Piyoosh Rautela, told TOI, 'Disasters like this happen when water accumulates at higher altitudes and is suddenly released. Heavy rain alone cannot cause such destruction.'As rescue and relief operations continue in Dharali, scientists are now focused on analysing satellite data and field evidence to confirm the exact cause of the disaster.

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