Myanmar, Thailand earthquake: Bangkok skyscraper collapse rescue operation underway | DW News

Key Concepts:

• Earthquake in Myanmar and Bangkok
• Rescue efforts and challenges
• International aid and access difficulties in Myanmar
• Fatality estimates and factors influencing them
• Seismic activity in the region and the Sagang Fault
• Aftershocks and their potential impact
• Building vulnerability and safety advice

1. Bangkok Skyscraper Collapse and Rescue Efforts

• A skyscraper collapsed in Bangkok due to the earthquake.
• A large-scale rescue operation is underway, involving numerous Thai workers.
• Challenges include the size of the rubble, darkness (past 1:00 a.m.), and the instability of the site, posing risks to rescuers.
• The noisy environment due to generators makes it difficult to hear potential survivors.
• The rescue operation is expected to continue throughout the night and potentially the entire weekend.

2. Earthquake Impact in Thailand and Myanmar

• Bangkok is the area in Thailand most affected by the earthquake.
• Myanmar has experienced a more severe impact, with potentially hundreds of fatalities.
• The military government in Myanmar has requested international aid.
• Civil war and control of territory by different groups (ethnic armed groups and the military) complicate aid delivery.
• Information flow from Myanmar is limited, and electricity has been cut in affected areas.

3. Challenges to Aid Delivery in Myanmar

• The military junta's control over territory and potential restrictions on aid access to rebel-held areas are major concerns.
• The possibility of a temporary truce between the military and opposition groups to facilitate aid delivery is uncertain.
• Myanmar's limited resources compared to Thailand highlight the urgent need for international assistance.

4. USGS Fatality Estimates in Myanmar

• Dara Goldberg, a geophysicist with the US Geological Survey (USGS), estimates potentially thousands of deaths in Myanmar, contrasting with the official death toll of 144.
• The USGS estimates fatalities and economic loss based on the earthquake's location, depth, proximity to population centers, and building types.
• Shallower earthquakes have a greater impact on surface structures.
• The population in the region resides in structures vulnerable to earthquake shaking.

5. Earthquake Characteristics and Impact

• The earthquake is described as large and shallow, causing widespread devastation.
• The rupture extended at least 200 kilometers along the Sagang Fault.
• It is compared to the 2023 earthquake in Turkey, which had a similar magnitude and strike-slip rupture (lateral movement of tectonic plates).
• Approximately 3.9 million people experienced severe shaking.

6. Aftershocks and Future Seismic Activity

• The main shock (magnitude 7.7) is over, but aftershocks are expected in the coming days, weeks, and months.
• There is a 40% chance of a magnitude 6 or larger earthquake in the region within the next week.
• Ten aftershocks have been located, with the largest being a magnitude 6.4 occurring shortly after the initial quake.
• People in the area may continue to feel shaking from aftershocks.

7. Seismic Activity in the Region

• The region is highly seismically active due to the India plate moving northward relative to Eurasia.
• The western part of Myanmar is stuck to the India plate, causing stress along the Sagang Fault.
• The area has experienced several large earthquakes of similar magnitude since 1900.

8. Safety Advice and Building Codes

• People in affected regions should seek information from local authorities who understand the condition of buildings.
• Buildings with slight damage may become more vulnerable during aftershocks.
• The "duck, cover, and hold on" advice (getting under a table) is based on US building codes and may not be universally applicable.

9. Notable Quotes

• Tommy Walker: "...this is going to be an all night operation for sure an all weekend operation if not..." (referring to the rescue efforts in Bangkok)
• Dara Goldberg: "...we estimate fatality is an economic loss based on what we know about the earthquake's location its depth shallower earthquakes have a larger impact on the structures at the surface..." (explaining the USGS methodology)

10. Technical Terms and Concepts

• Strike-slip rupture: A type of fault movement where tectonic plates move laterally past each other.
• Sagang Fault: A major fault line in Myanmar, likely the source of the earthquake.
• Aftershocks: Smaller earthquakes that follow a larger earthquake, caused by adjustments in the Earth's crust.
• Magnitude: A measure of the energy released by an earthquake.

11. Synthesis/Conclusion

The earthquake has caused significant damage and potential loss of life in both Thailand and Myanmar. Rescue efforts are underway in Bangkok, but the situation in Myanmar is complicated by civil conflict and challenges in delivering international aid. The USGS estimates a potentially high death toll in Myanmar due to the earthquake's characteristics and vulnerable infrastructure. Aftershocks are expected, and the region remains seismically active. The need for international assistance and coordinated efforts to provide aid and support to affected populations is critical.