Imagine a structure that has stood tall for nearly 1,400 years, witnessing the rise and fall of dynasties and the evolution of a civilization. That is the Giant Wild Goose Pagoda in Xi'an, the capital of Shaanxi Province in the Chinese mainland. But even the most legendary landmarks get old, and for a long time, the internal health of this 64-meter-tall Buddhist icon was a total mystery. 🧐
Until recently, experts only knew what they could see on the surface—cracks and weathering. They didn't know if the core was solid or how it would handle a major earthquake. Enter the tech squad! A team of researchers has finally given the pagoda its first full-body checkup using a mind-blowing combination of electromagnetic waves, satellite radar, and artificial intelligence (AI). 🛰️✨
Peeking Inside Without Breaking a Brick 🧱
The researchers didn't want to drill holes into a UNESCO World Heritage site (obviously!). Instead, they used electromagnetic resonance technology. Think of it like a digital fingerprint; every material has its own unique frequency. By sending these waves through the walls, they mapped the pagoda's "anatomy" without touching a single brick.
The results? They discovered the pagoda is like a historical onion! It has a rammed earth core, original Tang Dynasty brickwork, reinforcements from the Ming Dynasty, and an internal wooden pillar system. They even found a hidden 50-millimeter gap between the Tang and Ming layers that no one knew existed. Talk about a history lesson! 📖
The "Silent Killers": Water and Salt 💧🧂
While the tower is stable, it's fighting some invisible battles. The team found that water seeping from the foundation carries dissolved salts upward. When the water evaporates, the salt crystals expand and chip away at the bricks. Add in the freezing winter cycles, and you have a recipe for deterioration.
There is also a slight tilt—about 0.9 degrees to the northwest. While it's not leaning like the Tower of Pisa, this tilt actually increases earthquake stress on the upper sections by over 40%. 😱 Researchers also noted that vibrations from city traffic and tourist footsteps are pushing close to safety limits, leading to suggestions that foot traffic be managed during peak hours to keep the structure happy.
AI to the Rescue 🤖
The coolest part? The team trained an AI system to scan photographs and automatically spot cracks and eroded mortar. What used to take humans days of tedious manual labor now takes the AI just a few hours, with over 90% accuracy. Talk about a glow-up for heritage conservation!
What's next? The team is planning to create a "digital twin"—a high-precision virtual replica of the pagoda. This will allow them to run simulations and test protection strategies in a digital world before applying them to the real-life masterpiece. 🌍💻
By blending ancient architecture with futuristic tech, the Giant Wild Goose Pagoda is getting the care it needs to stand strong for another thousand years! ✨
Reference(s):
cgtn.com
