On the morning of June 19, 2024, residents across multiple districts in Chengdu reported hearing a loud boom, sparking widespread public concern and speculation. Some netizens described shaking windows and slight ground vibrations, with a few mistakenly believing it was an explosion or earthquake. In response, the Chengdu Emergency Management Bureau quickly clarified that initial investigations ruled out earthquakes, explosions, gas leaks, or other safety incidents. Subsequently, the Air Force Staff Department of the Western Theater Command confirmed that the loud noise was caused by a sonic boom generated during routine supersonic flight training by military aircraft. A sonic boom occurs when an aircraft exceeds the speed of sound, creating a shockwave due to rapid air compression; while it produces a thunder-like sound, it is generally harmless to people and structures on the ground. Authorities reassured the public there was no cause for alarm, noting such exercises are standard military operations that may continue in designated airspace. The incident also highlighted public sensitivity to unexpected acoustic phenomena, prompting calls for enhanced science communication to improve public understanding of both natural and military-related events.
2024年6月19日上午，成都多个区域居民反映听到一声巨大轰鸣，引发广泛关注和猜测。部分网友称窗户震动、地面微颤，甚至误以为发生爆炸或地震。对此，成都市应急管理局迅速作出回应，经初步排查，排除了地震、爆炸、燃气泄漏等安全事故可能。随后，西部战区空军参谋部确认，该巨响系空军部队在组织飞行训练时，战机突破音障产生的音爆现象。音爆是超音速飞行器在速度超过音速时，因空气剧烈压缩而产生的冲击波，常伴随巨大声响，但对地面人员和建筑通常无害。官方提醒市民不必恐慌，并表示此类训练属正常军事活动，未来仍可能在特定空域进行。此次事件也反映出公众对突发异常声响的高度敏感，相关部门呼吁加强科普宣传，提升民众对自然与军事现象的科学认知。
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