The Megathrust Effects of the Sunda Strait and the Potential Threat of Major Earthquakes and Tsunamis

Kapanlagi.com - Still fresh in discussions, the potential for a major earthquake in the megathrust zone of the Sunda Strait has resurfaced. Recent research from the National Research and Innovation Agency (BRIN) depicts a concerning scenario: an earthquake with a magnitude reaching 9.1 that could trigger a devastating tsunami, threatening the coasts of Java and Jakarta.

In simulations conducted by BRIN, it was revealed that tsunami waves as high as 20 meters could strike the southern coast of Java. Meanwhile, in the Sunda Strait, wave heights are predicted to range from 3 to 15 meters. Even more shocking, waves of 1.8 meters are estimated to hit Jakarta just 2.5 hours after the earthquake occurs!

Nuraini Rahma Hanifa, one of BRIN's researchers, emphasized that this potential is not just a prediction but a real threat that requires preparedness from both the community and the government. The energy trapped in the Sunda Strait subduction zone continues to accumulate and could be released at any time.

1. Sunda Strait Megathrust: The Impact of Tsunami on the Jakarta and Banten Regions

If the Sunda Strait megathrust erupts, the impact will directly hit Jakarta and Banten. With a high population density and soft soil, Jakarta is at risk of experiencing severe damage from the earthquake tremors and tsunami waves.

Quoting Liputan6.com, the northern coastal area of Jakarta is predicted to be swept by waves as high as 1.8 meters, which could paralyze economic activities and damage critical infrastructure. On the other hand, the Cilegon industrial area is also threatened, with the potential for fires and hazardous chemical leaks.

2. Sunda Strait Megathrust: The Threat of Giant Tsunami and Damage in Coastal Areas

Terrifying waves are ready to threaten! Recent research from BRIN reveals that the megathrust in the Sunda Strait could trigger a devastating tsunami with heights reaching 20 meters on the southern coast of Java and 3-15 meters in the Sunda Strait.

This tsunami not only has the potential to destroy settlements and damage vital infrastructure along the coast, but it could also cause significant economic losses by destroying ports, factories, and logistics distribution networks in coastal areas. Stay alert, as this disaster could come at any time!

3. Sunda Strait Megathrust: Jakarta is Vulnerable with Dense Infrastructure

Jakarta, the magnificent yet vulnerable capital, faces a serious threat from the potential megathrust of the Sunda Strait. The latest simulations from BRIN indicate that a tsunami as high as 1.8 meters could hit the city in just 2.5 hours after an earthquake strikes.

With vital infrastructure such as ports, toll roads, and electrical networks at risk, along with a high population density, the risk of casualties could soar if the evacuation system does not function properly.

The soft soil in Jakarta also exacerbates the situation, increasing shaking and damaging high-rise buildings. BRIN researcher, Nuraini Rahma Hanifa, emphasizes the importance of strengthening building structures in densely populated areas to mitigate the risks of this disaster.

4. Sunda Strait Megathrust: Danger to Industrial and Economic Areas in Banten

The industrial area in Banten, especially Cilegon, is on the brink of a looming threat, namely a megathrust earthquake and tsunami. Large factories storing chemicals and fuels are at risk of fire and explosions if structural damage occurs.

The National Research and Innovation Agency (BRIN) warns that the consequences of this disaster will not only disrupt the production and distribution chain of goods but also pose a risk of environmental pollution due to spills of hazardous substances.

Therefore, mitigation measures that include enhancing safety standards in factories and providing dedicated evacuation routes become crucial to protect safety and the environment.

5. Megathrust of the Sunda Strait: Loss of Housing and Refugee Crisis

Behind the material losses caused by the megathrust of the Sunda Strait, there is a greater threat lurking, namely a social crisis due to the loss of housing for thousands of coastal residents.

The tsunami that strikes has the potential to destroy fishing villages, triggering a massive wave of displacement towards safer areas.

In this context, BRIN emphasizes the urgency of establishing temporary evacuation sites that can accommodate many residents, as well as preparing logistical aid, clean water, and medical facilities to prevent a health crisis after the disaster.

6. Sunda Strait Megathrust: Underwater Landslide Risks and Tsunami Double Effects

BRIN revealed that in addition to the threat of major earthquakes, the megathrust in the Sunda Strait can also trigger underwater landslides that have the potential to amplify the height and speed of tsunamis.

A similar phenomenon occurred during the Pangandaran tsunami in 2006, which worsened the disaster impact on the southern coast. If an underwater landslide occurs in the Sunda Strait, the resulting large waves could strike coastal areas with greater speed and force.

Therefore, BRIN researchers emphasize the importance of active monitoring of seabed movements and the enhancement of early warning systems to face the possibility of these terrifying double effects.

7. Disaster Mitigation Steps: Infrastructure and Public Education

In an effort to minimize disaster impacts, the National Research and Innovation Agency (BRIN) proposed the construction of tsunami barriers in coastal areas, while the planting of vegetation such as mangroves and sea pandan along the coast is recognized as an effective measure to dampen tsunami waves.

Moreover, local governments are also focusing on educating the community about evacuation routes and providing emergency supplies. To enhance preparedness, regular tsunami simulation training is expected to equip residents with the knowledge and skills to face emergency situations.

8. Technology and Tsunami Early Warning Systems

The government, together with BRIN and BMKG, is tackling the tsunami threat by launching a state-of-the-art early warning system. This system will provide instant notifications via SMS and mobile applications as soon as dangerous waves are detected.

BRIN researcher, Nuraini Rahma Hanifa, emphasized that this device must be tested and updated regularly to ensure its performance in emergency situations.

"The continuity of testing is very important," she stated in an official BRIN release on Saturday (1/4/2025).

In addition, strengthening the radio communication system is also a major focus so that information can reach remote areas. The public is urged to understand evacuation procedures as soon as they receive warnings for the sake of collective safety.

9. Community Preparedness Against Tsunami Threats

Residents in coastal areas, especially in southern Java and northern Jakarta, are urged to immediately design an emergency plan for their families. Providing a disaster readiness bag containing food, water, medication, and other essential supplies is a crucial step that should not be overlooked.

Moreover, conducting evacuation drills with the local community is highly recommended so that when a disaster strikes, our response can be quicker and better coordinated. Together, we can be more prepared for any eventuality!

10. What is the Sunda Strait megathrust?

The Sunda Strait megathrust, a fault zone located on the seabed, holds tremendous potential to trigger large earthquakes and tsunamis due to the dynamic movement of surrounding tectonic plates. This natural phenomenon is a serious concern, given the power it can generate and the impact it could have on the surrounding areas.

11. How large could the tsunami be as a result of this megathrust?

Shocking simulation results show the potential tsunami that could strike the southern coast of Java with heights reaching 20 meters, while Jakarta may face waves as high as 1.8 meters.

12. How long will it take for the tsunami to reach Jakarta?

It is estimated that the tsunami waves will hit Jakarta about 2.5 hours after the earthquake shakes the Sunda Strait, marking a moment of tension and alertness for the capital's residents.

13. What mitigation steps are recommended by BRIN?

Some smart steps proposed to face this challenge include the construction of sturdy levees, planting mangroves that serve as natural protectors, strengthening early warning systems to keep us always alert, and effective evacuation training to ensure the safety of every individual.

14. Are Jakarta and Banten ready to face this disaster?

The local government is now actively enhancing disaster preparedness by involving the community through engaging education, conducting educational disaster simulations, and establishing close coordination with BMKG to ensure that the early warning system functions optimally.

(kpl/rmt)