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grottoes
Sand drift encroachment in the Dunhuang Mogao Grottoes District and its control
      
The gobi belt on the cliff top of the Mogao Grottoes is not only a natural sand transport field but also a natural protective screen which prevents the megadune and its frontal edge dunes from advancing towards the grottoes or burying the grottoes.
      
Therefore efforts to protect the Mogao Grottoes should be focussed on halting the gobi wind-sand stream rather than on checking the migration of sand dunes.
      
The equilibrium gravel coverage of the deflated gobi above the Mogao Grottoes of Dunhuang, China
      
Blown sand has caused considerable damage to the Dunhuang Mogao Grottoes of China.
      
Experiments were conducted in a wind tunnel and in the field to define the relationships between sand production and gravel coverage in the gobi above the Mogao Grottoes.
      
Gravel coverage has reached an equilibrium state in the portion of the gobi directly above the grottoes, but decreases towards the Mingsha Mountains.
      
Drifting sand from these mountains is the main source of sand damage at the Mogao Grottoes.
      
Therefore, to control the blowing sand above the Mogao Grottoes, emphasis should be placed on controlling erosion from the Mingsha Mountains rather than local erosion of sand in the gobi.
      
It occurs at the reef slope in a depth of 22-48 m at the edge of grottoes.
      
Heavy geological deterioration and other factors have resulted in various degrees of damage to the temple's grottoes and stone carvings over the centuries such that protection and renovation are urgently required.
      
The gobi sand stream and its control over the top surface of the Mogao Grottoes, China
      
The paper discusses measures to protect the Mogao Grottoes, northwest China, from the effects of a gobi sand stream.
      
After constructing the grottoes we had the right to sit by them and demand coppers from the passers-by.
      
Archaeological workers in Longmen Grottoes are responsible for the line drawing from the maps.
      
Although gypsum is a common min eral in desert areas, it is seldom observed in the fan deposits around the Mogao grottoes.
      
Discoloration of paint pigments is very common in grottoes of various periods, especially in those painted during the Tang and Sui dynasties.
      
For example, in order to treat the deteriora tion at the Yulin grottoes, comparisons were made with past work at the Mogao and Maijishan grottoes.
      
Glick digital editing Buddha figure at the World Heritage Yungang grottoes, near Datong.
      
Later, we took the boats out and followed a minke whale around the bergs, sailing through Daliesque arches and poking into cold blue grottoes.
      
 

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