Summary

The deadliest day in human history occurred on January 23, 1556, when the Shaanxi Earthquake in China resulted in the deaths of 830,000 people, a toll no single day has surpassed despite the global population increase to nearly 8 billion.

Abstract

The Shaanxi Earthquake, with an estimated magnitude of 8.0–8.3, struck central China on January 23, 1556, during the reign of the Jiajing Emperor of the Ming Dynasty. It led to the collapse of cities, landslides, mudslides, ground fissures, and fires, causing the highest number of fatalities ever recorded on a single day. Despite advancements in technology and an almost 16-fold increase in the world's population, no event has resulted in a higher death toll in one day. The earthquake's impact was exacerbated by the construction methods of the time, particularly the use of loess caves and rigid stone buildings that were vulnerable to seismic activity. Although the largest recorded earthquake was the 1960 Great Chilean Earthquake with a magnitude of 9.5, it did not result in as many deaths as the Shaanxi Earthquake. The article emphasizes the need to learn from historical disasters to prevent future catastrophes, noting that even with modern advancements, humanity has not experienced a day as deadly since 1556.

Opinions

The author suggests that despite humanity's technological advancements, including the development of nuclear weapons, nature's fury, as demonstrated by the Shaanxi Earthquake, has not been surpassed in terms of single-day mortality.
The article implies that the construction practices of the time, such as building homes in loess caves and using rigid stone for structures, contributed significantly to the high death toll.
It is highlighted that the Shaanxi Earthquake serves as a historical lesson for disaster prevention and that understanding past events is crucial for mitigating future disasters.
The author takes a cautionary stance, urging respect for nature's power and the importance of learning from history to avoid similar catastrophes.
The article concludes with a call to action for readers to support the author's writing journey by subscribing and using their referral link to join Medium, emphasizing the value of shared knowledge and storytelling.

The Deadliest Day in Human History

It was a Thursday in January

The deadliest earthquake in human history is at the heart of the deadliest day in human history. On January 23, 1556, more people died than on any day by a wide margin.

Although military weaponry has advanced vastly since 1556, including the nuclear bombs’ advent, mother nature’s wrath has yet to be passed by humanity.

The world population in 1556 is estimated to have been less than 500 million people. Still, even as the world approaches 8 billion people, no single day has been as deadly as that Thursday in January when the Shaanxi Earthquake hit central China.

The Shaanxi Earthquake

The Shaanxi Earthquake caused the deaths of 830 thousand people in China. The earthquake leveled the three cities closest to the epicenter in Shaanxi province. It caused landslides, mudslides, ground fissures, and fires that killed people over a 520-mile swath of land in central and eastern China.

The 1556 earthquake is often referred to as the Jiajing Great Earthquake. According to Britannica, the earthquake took place during the Jiagjing Emperor's rule, the Ming Dynasty's eleventh emperor.

Ripe for destruction

According to Climate Policy Watcher, many people in central China at the time of the Shaanxi Earthquake built their homes in loess caves. Loess is fine-grained soil eroded from the Gobi desert in northern China. Loess is an easy building material to manipulate, but its structures had no chance to stand up to the tremors of a powerful earthquake.

Loess is only part of the story. The cities in the area were built with rigid stone. The problem with stone buildings is that they are susceptible to collapse under vibration, and when they collapse on people, their weight tends to kill them.

The deadliest day in human history

It was a winter day in central China when tragedy struck. A normal January Thursday turned into the deadliest human catastrophe in world history.

According to History, the epicenter was in the Wei River Valley between the cities of Huaxian, Weinan, and Huayin. In Huaxian, every single building collapsed. It is estimated that about 60% of the population was killed in areas closest to the epicenter.

Ground fissures opened up that were 60 feet deep, landslides and mudslides buried people, and fires raged. According to History Collection, a translation from China's annals goes as far as to say that mountains and rivers changed places, and new hills and valleys were formed out of nowhere. All the buildings in certain cities collapsed suddenly.

Magnitude in Perspective

It would not take the most powerful earthquake in world history to cause immense devastation to the area. In fact, according to History, the Shaanxi earthquake of 1556 wasn’t even close, with an estimated magnitude of 8.0–8.3.

According to Rong-Gong Lin II of the LA Times, to put a magnitude of 8 in perspective, an intensity 10 earthquake is extreme, an intensity 9 is violent, and an intensity 8 is severe. However, an intensity 8 earthquake only causes slight damage to specially designed structures but great damage in poorly built structures. As discussed, the central China structures in 1556 were poorly built, which led to maximum devastation.

Largest magnitude in history

According to the USGS, the largest earthquake ever recorded was a magnitude of 9.5 on May 22, 1960. An earthquake of magnitude 10 or larger cannot happen because magnitude relates to the length of a fault line on which it occurs.

The 1960 Great Chilean Earthquake happened in Chile and killed approximately 1,655 people there. It resulted in a Tsunami that killed an additional 61 in Hawaii, 138 in Japan, and 32 in the Philippines.

Why China was unprepared for the Shaanxi Earthquake

China had not seen an earthquake of the magnitude of the Shaanxi Earthquake in over 250 years since the 1303 Hongdong Earthquake.

Long before the Ming dynasty came to power, the Mongol dynasty, also known as the Yuan dynasty, ruled China. According to Britannica, Temur, Kublai Khan’s grandson, was China's ruler during 1303, when the Hongdong Earthquake happened on September 25 of that year.

According to Science Museums of China, The 1303 Hongdong Earthquake was estimated to have a magnitude of 8.0. It is described similarly to the catastrophe of 1556. More than 200 thousand people were killed, and the cities of Taiyuan and Pingyang were leveled.

After 250 years, when the Shaanxi Earthquake struck, perhaps the legends of massive earthquakes were considered in the past.

Takeaways

Mother nature is still the most powerful force in our world. Human technological capabilities have improved drastically, but (at least in one day), we have never inflicted as much death on ourselves as she has.

According to Hannah Ritchie of Our World in Data, even as the world population nears 8 billion, the yearly death toll is under 60 million. This equates to an average daily death toll of just over 160 thousand people per day. This means even though our population has grown 16-fold since the Shaanxi earthquake, no day has surpassed it in terms of lives lost.

The Shaanxi earthquake catastrophe teaches us that we need to learn from our past to prevent disasters. This does not mean only looking at the recent past but also throughout history.

In the twentieth century, two Chinese earthquakes had death tolls surpassing 200 thousand: the 1920 Gansu Earthquake (magnitude 8.3) and the 1976 Tangshan Earthquake (magnitude 7.5).

I take solace in the fact that the deadliest day in human history was long in the past, but I do so with caution. We need to learn from the past and respect the awesome power of mother nature.

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