The size of the earthquake and the length of the fault line it occurred on contributed to the devastation.
www.bbc.com
看看BBC怎么说的,起码应该比较客观, 而且请了专家分析,而不是靠普通人逻辑思维:
1. Why was the earthquake felt so far away?
How earthquakes are felt at the surface is also determined by the type of soil.
In soft soil - which is what Bangkok is built on - seismic waves (the vibrations of the earth) slow down and build up, getting bigger in size.
So Bangkok's geology would have made the ground shaking more intense.
这么远这么严重是因为土地软,放大了振幅, 就像海啸一样
2. Yet the building that collapsed was new - in fact, it was still under construction when the earthquake hit - and the updated building standards would have applied.
Dr Pimarnmas said Bangkok's soft soil may have also played a part in its collapse, as it can amplify ground motions three or four times over.
He added: "However, there are other assumptions such as material (concrete and reinforcements) quality and some irregularity in [the] structural system. These remain to be investigated in detail."
3. Having studied the video, Dr Málaga-Chuquitaype said it appears a "flat slab" construction process was being favoured - which is no longer recommended in earthquake-prone areas.
"A 'flat slab' system is a way of constructing buildings where floors are made to rest directly on columns, without using beams," he explained.
"Imagine a table supported only by legs, with no extra horizontal supports underneath.
"While this design has cost and architectural advantages, is performs poorly during earthquakes, often failing in a brittle and sudden (almost explosive) manner."