Vpliv obiskov na mikroklimo jam – analitični pristop

The theoretical basis for describing natural steady-state conditions in caves as well as for their changes in time that follow from the simple advection-diffusion equation, is given. The impacts of visits to caves – direct impacts due to anthropogenic emissions of heat and CO2, as well as indirect ones, such as illumination and possible drafts when opening the door to the cave – are estimated in dependence to the number of visitors and the size of the cave: the size with which the effects of the visits are below the detection threshold is estimated. It is shown that the sources cause linear responses, while the consequences of the exchange with the walls of the cave or with the exterior depend on time exponentially. Characteristic times for linear as well as for exponential responses are roughly estimated.Podane so teoretične podlage za opis naravnih ravnotežnih pogojev v jamah in za njihove časovne spremembe, kot izhajajo iz preproste advektivno-difuzijske enačbe. Ocenjeni so vplivi obiskov v jame - tako neposredno zaradi antropogenih emisij toplote in CO2, kot posrednih, kot so razsvetljevanje in možni prepihi pri odpiranju vrat v jamo. Velikost teh vplivov je ocenjena glede na število obiskovalcev in glede na velikost jame: ocenjena je velikost, pri kateri so učinki obiskov pod pragom zaznavanja. Pokazano je, da viri povzročajo linearne odzive, medtem ko so posledice izmenjav s stenami jame ali z zunanjostjo eksponentno odvisne od časa. Grobo so ocenjeni karakteristični časi za linearno kot za eksponentne odzive so grobo ocenjeni