UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary of Karst and Cave Terms

1. Temporarily rising water level in a cave caused by downstream passage being too small to pass an abnormally high discharge. The excavation and reexcavation of some caves is ascribed to the enlargement of a passage at or near the water table by gravity flow alternating with periods of calcite precipitation [10]. 2. Flooding due to backup of excess flow behind a constriction in a major conduit. Water that is ponded in tributary passages and proto-caves upstream of the constriction may contribute to the enlargement of maze caves [9].