Survival for individuals trapped in earthquake rubble hinges on a complex interplay of factors, including the severity of injuries, weather conditions, and the availability of air and water. Experts indicate that in the absence of critical injuries, victims can potentially survive for over a week, provided the environment is not excessively hot or cold.
While the majority of earthquake rescues typically occur within the initial 24 hours following a disaster, the chances of survival diminish with each subsequent day. Victims are frequently found with severe injuries or buried by falling debris. A critical element for survival is the presence of a "survivable void space," such as the area beneath a sturdy desk, which can prevent major injuries from falling materials, according to geophysicist Victor Tsai of Brown University.
The presence of fire, smoke, or hazardous chemicals released during a building's collapse can significantly reduce a person's odds of survival, stated emergency response expert Dr. Joseph Barbera, an associate professor at George Washington University. Beyond immediate dangers, the availability of breathable air and water becomes paramount for sustaining life over time.
"You could survive a while without food,” Barbera noted. “You could survive less without water.”
Temperature also plays a role, influencing both the survival prospects of those trapped and the feasibility of rescue operations. International rescue teams, equipped with trained search dogs and machinery, have been deployed to assist in recovery efforts. In some instances, rescue operations have been observed to become more organized following initial reports of frustration regarding the response level.
Medical considerations are also vital; Dr. Barbera highlighted the importance of providing critical medical care before a survivor is removed from the rubble. Failure to do so could result in toxins from crushed muscles causing shock post-rescue.
Historical accounts demonstrate remarkable survival stories, such as a teenager and his grandmother found alive nine days after an earthquake and tsunami in Japan, and a 16-year-old girl rescued in Haiti after 15 days. However, survival outcomes are often influenced by local building codes and preparedness measures, particularly in regions prone to seismic activity.
In areas like the United States, safety guidelines during an earthquake recommend the "drop, cover, and hold on" technique, urging individuals to seek shelter under heavy furniture or near sturdy structures that might create a survivable pocket. Covering the face with cloth or a mask can protect against dust and debris.
For those who find themselves trapped, conserving energy is advised. Rationing food and water, listening for rescue calls, and using an object to create noise can aid in signaling for help. If a phone is available, conserving its battery and using it for short, intermittent calls is recommended.