Effect of Earth‐Air Movement on Water Transport in the Rock Surrounding Cave B113 in the Mogao Grottoes

Research at the Mogao Caves reveals that earth-air movement, driven by air pressure differences (APD), significantly influences water transport and moisture dynamics in the rock surrounding Cave B113. The study found that APD fluctuates inversely with atmospheric pressure (AP) and increases with depth, acting as a driving force for earth-air movement. This process affects humidity levels in the rock layers, with temperature influencing water vapor concentration while the movement of earth-air impacts relative and absolute humidities. The magnitude of AP fluctuations determines the volume of water migrating within the rock, ultimately affecting evaporation patterns and moisture characteristics. These findings provide critical insights into the degradation mechanisms of cave wall paintings, offering a scientific basis for developing targeted conservation strategies.

Wang, S., Li, H., Li, F., Gong, Y., & Wang, X. (2025). Effect of Earth‐Air Movement on Water Transport in the Rock Surrounding Cave B113 in the Mogao Grottoes. Hydrological Processes, 39(2). Portico. https://doi.org/10.1002/hyp.70073