Donnees thermometriques relatives a l'atmosphere de la Grotte Poarta lui Ionel (Monts du Bihor, Roumanie)

“AIR TEMPERATURE DATA IN POARTA LUI IONEL CAVE (BIHORMOUNTAINS, ROMANIA)”. The authors analyzed the one-year temperature cycle values continuously registered in Poarta lui Ionel Cave by using five data loggers. Pursuant to the distinctive cave morphology, the big gallery that forms the basal level is under a permanent bidirectional ventilation effect, while the upper gallery is characterized by an obvious stability. According to the dynamics of air exchanges, theoutside influences are strong enough, so that to the cave temperature vary during a year period with an evident periodicity, not only seasonal, but also daily. In spite of the lack of a similar periodicity, the daily amplitudes are quite important, exceeding 1°C in the extremity of the basal gallery. These facts mean that, beside the convection phenomena, the outside influences can also propagate in the cave by conduction.