Almost always, traces of the sulfuric acid produced after large volcanic eruptions are trapped in snow and ice as the acid precipitates out of the contaminated atmosphere.
英
美
- 大型火山喷发后所产生的硫酸遗迹,通常都是密封在雪与冰中,这些硫酸都是来自受污染大气的酸性沉淀物。