Quantity and spatial distribution of earth-air activity in Cave 108 of the Dunhuang Mogao Grottoes.

ABSTRACT: Monitoring of earth-air humidity in soil has revealed extensive rising/falling activity on the land. Alternation of dry and wet air is the main root cause deterioration in cave wall paintings. However, the quantity and spatial distribution of earth-air activity in caves remain unclear. This study used air flowmeters to monitor the earth-air outflow at 136 points on the west, south, and north walls of Cave 108 in the Dunhuang Mogao Grottoes, and to determine its spatial distribution. Results showed that under the influence of atmospheric fluctuation, there is frequent air exchange between the atmosphere and the earth-air, and that the daily outflow of earth-air from Cave 108 is 50.893 m³/d. Earth-air flux is negatively correlated with atmospheric pressure, and the fluctuation of

SUBMITTER: Li F 

PROVIDER: S-EPMC10877257 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature