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- W4289666463 abstract "The ventilation of carbon dioxide within subterranean caves regulates the growth of speleothems --- mineral deposits found in caves that provide important clues about past climate. While previous studies have used internal temperature measurements to predict ventilation rates, such data would not be available for the task of climate reconstruction. Here, we develop a parsimonious model to predict ventilation rates from knowledge of outside temperatures and the cave's physical dimensions only. In the model, ventilation arises from buoyancy-driven flows created in passageways that connect to the outside. A few key simplifications leads to a system amenable to perturbation analysis, resulting in explicit expressions for ventilation rates. We compare these predictions to time-resolved, in-situ measurements of transported cave gases (carbon dioxide and radon). The theory accurately accounts for the timing and magnitude of seasonal and synoptic variations of these gases, and is therefore diagnostic of seasonal bias in speleothem growth." @default.
- W4289666463 created "2022-08-03" @default.
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- W4289666463 date "2018-08-30" @default.
- W4289666463 modified "2023-09-28" @default.
- W4289666463 title "A minimal model for predicting ventilation rates of subterranean caves" @default.
- W4289666463 doi "https://doi.org/10.48550/arxiv.1808.10478" @default.
- W4289666463 hasPublicationYear "2018" @default.
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