Frank Yang, the NTU geochemist leading Taiwan's research into the phenomenon, says that the gases residing deep in the Earth's crust-primarily carbon dioxide, methane, radon, and helium-are quite different from the nitrogen and oxygen that predominate at its surface.
國內主持該項研究的台大地質系教授楊燦堯指出，地殼深處的氣體以二氧化碳、甲烷、氡氣及氦氣為主，與地表上方的空氣成份（氧、氮為主）截然不同。