Effect of automobile emissions on the Jenolan Caves
Julia M. James,Sarah J. Antil ,A. Cooper , M. J. D. Stone - (27/1,1998)
Jenolan Caves are a major tourist attraction in NSW, Australia. One of the major features of the caves is a natural archway known as the Grand Arch, through which a road passes. Carbon dioxide (CO2), sulfur oxides (SOx), nitrogen oxides (NOx), volatile organic compounds (VOCs) and particulate matter were measured in an attempt to determine the associated risk to the caves. CO2 levels were above the average atmospheric concentration but below the limestone damage threshold of 2400 ppm. The SOx, NOx and VOCs concentrations were exceptionally low. Vehicle-produced particulate matter from the Grand Arch was found up to 100 m into the tourist caves but was prevented from further penetration by a barrier of moist cave air.