히말라야 쇼크 : 재난 사슬 [풀영상] | 창 565회 (KBS 26.9.29.)

On August 26, the north face of Langtang Lirung in the Himalayas collapsed. Rocks and glaciers detached from an altitude of 5,200 meters raced down the valley, drawing in sediment and water to turn into a massive flood. Conventional flood forecasts and existing disaster prevention standards were powerless in the face of this overwhelming scale. This catastrophe, which claimed or left more than 8,000 lives, was named the "Great Himalayan Flood." ■ Overwhelming Scale… "Is it a Landslide or a Flood?" Although it was named a flood, this disaster is difficult to explain solely within the framework of a flood. In a flood, rising water moves sediment. However, this time it was the opposite. Massive rocks and ice poured down first, transforming into debris flows and floodwaters to engulf the downstream area. This is why the flood warning and alert system, which operates based on rainfall volume and river levels, struggled to respond properly. The UT-1 hydroelectric power project site, presumed to be the location where the missing Korean nationals went missing, was also designed based on extreme flood levels corresponding to a 10,000-year return period. However, this disaster far exceeded even the conservatively estimated defense range. ■ At 4,000 meters above sea level, heading toward the glacier The reporting team for Sisa Gijeok Chang headed to the opposite side of the collapse site at Langtang Lirung. The geological conditions are not significantly different from the collapsed slope, and the area has been subjected to the same climatic influences at a similar altitude. The Himalayan glaciers are retreating rapidly. Bedrock that had long been buried beneath the ice has been exposed, and melted water is flowing into the cracks in the rocks, widening the fissures. How does a mountain change when glaciers disappear and frozen bedrock begins to melt? We examined the site to assess the possibility that this change could erupt into a disaster at any moment. ■ Where did all that water come from? The biggest mystery of this disaster is the "water." How did the rocks and ice pouring down from the mountain turn into a massive flood? The reporting team found an unexpected clue at an altitude of 4,000 meters. Beneath terrain that looked like an ordinary field of rocks, ice tens of meters thick was hidden. Then, were there hidden ice on the northern slope of Langtang Lirung where the collapse occurred? Is it possible that debris falling from the mountain struck and scraped away this glacier, drawing even more water into the disaster? 'Current Affairs Program Chang' traces the role this 'hidden glacier' played in the chain of disasters that led to massive debris flows and floods. ■ Disasters That Cause Disasters Disappearing glaciers and changes in permafrost, massive rock ice collapses, entrainment erosion, debris flows, and flash floods. In this disaster, one risk triggered the next, and each time, the scale of the disaster grew. Technology for monitoring each individual risk has advanced. The problem arises when they become interconnected. Conventional disaster prediction generally calculates the future based on the relationship between past disasters and conditions. However, if the climate and alpine environment itself change rapidly, combinations of disasters that did not exist in the past can begin outside the scope of existing statistics. Therefore, the question left by this Himalayan flood is not simple: "It is not about how large a flood we can prevent, but rather, what risks have we not yet connected?" The current affairs program 'Himalaya Shock: The Chain of Disasters' traces the process by which a single collapse amplified into a massive disaster, asking what we need to look at anew to predict unprecedented disasters. #Himalaya #GreatFlood #Disaster #Nepal #LangtangLirung #Glacier #ComplexDisaster #ChainDisaster #ClimateChange #DisasterPrediction #UT1 #HydroelectricPowerPlant Reporter: Oh Jung-hyun Cinematographers: Choi Man-yong, Park Chan-geol Video Editors: Lee Ki-seung, Kim Dae-young Research: Jang Su-bin Assistant Director: Yoon Sang-hoon Graphics: Ahn Seung-bae, Jung Dae-hyun, Jang Su-hyun Broadcast: September 29, 2026, 10:00 PM, KBS 1TV 'Chang' 'Chang' Homepage https://news.kbs.co.kr/vod/program.do... YouTube @kbssisa Facebook Facebook: changkbs WAVVE 'Chang' Window' Search