Kobe earthquake

A big shake hit a city in Japan.

It happened on a cold morning. The ground shook for 20 seconds. This shake broke many roads and houses.

It also caused many fires. Many people helped each other after. People from all over Japan came to help. The city worked hard to fix things. It grew back very fast.

The people will not forget.

On January 17, 1995, a big earthquake hit Japan.

It happened early in the morning. The shaking lasted for about 20 seconds. This was an inland shallow earthquake. This means the shaking started less than 20 km below the ground. It happened near the Nojima Fault.

This quake was very strong. It reached Level 7 on the JMA scale. This is the highest level of shaking. The city of Kobe was hit the hardest. Many buildings and roads broke. Some houses had heavy roofs. These roofs fell and crushed the walls.

About 300 fires started in the city. The earthquake also caused liquefaction. This is when water comes up through the soil. It made the ground soft on man-made islands. At least 5,000 people died. Many people from all over Japan came to help. This helped start a new way of helping others.

Kobe worked hard to fix itself. The city grew back very fast.

On January 17, 1995, a powerful earthquake struck Japan.

This event is often called the Kobe earthquake. It happened in the southern part of Hyogo Prefecture. The shaking was very strong and lasted for about 20 seconds. It was a major disaster for the region. It was the second deadliest earthquake in Japan during the 20th century. The 1923 Great Kanto earthquake was the only one more deadly. This event changed how people thought about helping others in times of need.

This was an inland shallow earthquake. This means the shaking started less than 20 km below the surface. It happened along active faults in the ground. The quake started north of Awaji Island. It spread along the Nojima Fault and other faults like the Suma and Suwayama faults.

The movement was caused by east-west pressure. The south side of the Nojima Fault moved 1.5 meters to the right. It also moved 1.2 meters downwards. These shifts in the earth caused the intense tremors. The earthquake even had four smaller foreshocks before the main event.

The earthquake was measured at a 6.9 magnitude. It was the first time Japan measured a Level 7 on its intensity scale.

Level 7 is the highest level of shaking on the JMA scale. This intense shaking hit several cities very hard. Kobe was the closest major city to the center. Ashiya, Nishinomiya, and Takarazuka also felt the strong Level 7 shaking. Other nearby regions felt levels between 4 and 6. The damage to the city was widespread and severe. Many buildings and roads could not be used anymore.

Many structures were destroyed by the shaking.

Nearly 400,000 buildings were damaged. Some traditional houses had very heavy tile roofs. These roofs could weigh two tons. When the wooden frames broke, the roofs crushed the houses. This is sometimes called a pancake collapse. About 300 fires also broke out across the city. The earthquake also caused liquefaction on artificial islands. This is when water is forced up through the soil. It makes the ground act like a liquid.

Kobe is a very important place for trade. It has one of the largest container ports in the world. The earthquake caused a big drop in the Japanese stock market. However, the local economy recovered very quickly. Within 15 months, manufacturing was almost back to normal. Many volunteers from all over Japan came to help. This was a big moment for volunteer work in Japan. Now, the government has a special day to remember this. It is called Disaster Prevention and Volunteerism Day. It helps people prepare for the future.

The Kobe earthquake, also known as the Great Hanshin earthquake, was a massive seismic event. It occurred on January 17, 1995, at 05:46:53 JST. The earthquake struck the southern part of Hyōgo Prefecture in Japan. It specifically impacted the Hanshin region. This event was a major disaster for the nation. It was Japan's second deadliest earthquake of the 20th century. Only the 1923 Great Kantō earthquake resulted in more deaths.

This event was classified as an inland shallow earthquake. Most large Japanese earthquakes come from the subduction of the Philippine Sea or Pacific plates. Those occur in coastal regions of northeastern Japan. However, this earthquake happened along active faults near the surface. The hypocenter, or the point where the earthquake begins underground, was 17 km deep. This is less than the 20 km threshold for shallow earthquakes. The epicenter was located on the northern end of Awaji Island. This was only 20 km away from the city center of Kobe.

The earthquake was driven by a strike-slip mechanism. This mechanism accommodated east–west shortening of the Eurasian plate. This shortening happened because the plate collided with the Philippine Sea plate. The movement spread along several specific fault lines. It moved along the Nojima Fault on Awaji Island. It also moved along the Suma and Suwayama faults through Kobe. During the 20 seconds of shaking, the Nojima Fault shifted significantly. The south side moved 1.5 meters to the right. It also moved 1.2 meters downwards. Four foreshocks occurred before the main event. The largest foreshock was a magnitude 3.7 event.

Measuring the power of the earthquake revealed its extreme intensity. It measured 6.9 on the moment magnitude scale. It also reached a maximum intensity of 7 on the JMA Seismic Intensity Scale. This was the first time Japan officially recorded a Level 7 intensity.

High intensity was felt in northern Awaji Island and several cities. These included Kobe, Ashiya, Nishinomiya, and Takarazuka. Other regions like Kansai and Chūgoku felt intensities between 4 and 6. Following this event, Japan fully mechanized its seismic intensity observations in 1996. The JMA also divided intensity levels 5 and 6 into two sub-levels.

The physical destruction was widespread and severe. At least 5,000 people died, with about 4,600 of those deaths in Kobe. Nearly 400,000 buildings suffered irreparable damage. In some areas, one in five buildings was destroyed or uninhabitable.

Many traditional houses experienced a pancake collapse. These homes had heavy tile roofs weighing up to two tons. The light wooden frames could not support the weight when the shaking started. The roofs then crushed the walls and floors. Additionally, approximately 300 fires broke out across the city. Artificial islands like Port Island also suffered from liquefaction. This process forced water up through the soil, making the ground unstable.

Transportation and infrastructure also faced massive failures. Ten spans of the Kobe Route elevated expressway collapsed. This blocked a road that carried 40% of traffic between Osaka and Kobe. Only 30% of the Osaka-Kobe railway tracks remained operational initially. The Sanyo Shinkansen high-speed rail line had to shut down completely. This happened because wooden supports inside concrete pilings collapsed. The port of Kobe was also heavily hit. About 120 of its 150 quays were damaged. This was a major blow to the global economy. Kobe was one of the world's sixth-largest container ports.

Despite the tragedy, the region showed incredible resilience. The local economy recovered very quickly after the disaster. Within 15 months, manufacturing activity reached 98% of pre-quake levels. Import volumes through the port recovered fully within one year. This event also changed Japanese society. It became a turning point for volunteerism in Japan. Many people from across the country traveled to Kobe to help. The government later declared January 17 as National Disaster Prevention and Volunteerism Day. This ensures that the lessons of 1995 are never forgotten.