1976 Tangshan Earthquake

On July 28, 1976, at 3:42 AM, a magnitude 7.5 earthquake struck the sleeping city of Tangshan, China. The official death toll was 242,469, making it the deadliest earthquake since modern seismic recording began. Why was this earthquake so deadly? Learn about six factors that came together to create a worst case scenario.   ⏱️ Timestamps INTRODUCTION 00:00 – Welcome 00:18 – Topic Introduction 1976 EARTHQUAKE FACTS 00:35 –Tangshan in 1976 00:58 –Date, time, magnitude 01:21 – Deaths and Damage WHY WAS THIS EARTHQUAKE SO DEADLY? 01:49 – Early morning; people were sleeping 02:20 – What is a survivable void? 02:56 – Shallow earthquake in urban area 03:18 – MMI X and XI shaking intensity 03:47 – Seismic hazard underestimated 04:07 – Unreinforced masonry buildings 04:35 – Sedimentary soils 05:07 – Liquefaction 05:23 – Damage hampered rescue operations 05:54 – Medical infrastructure destroyed 06:06 – Political turmoil 06:22 – International assistance declined TURNING POINT IN SEISMIC SAFETY 06:55 – National seismic code in 1978 07:11 – Tangshan's reconstruction 07:27 – Tangshan today CLOSING 07:39 – Tangshan earthquake memorial <