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Microorganisms Found in the Basal Horizons of the Antarctic Glacier above Lake Vostok
      
Problems of such kind arise in glaciology when one estimates the stability of snow on mountain slopes or determines the catastrophic movement of a glacier; the results can also be applied to solifluction phenomena [2, 3].
      
It was assumed that the temperature at the bed of the glacier could reach the melting point due to nonstationary heating and that the conditions would be produced for motion of the glacier.
      
Here we examine the nonstationary response of a glacier to small deviations of the system parameters from critical values corresponding to the stationary state.
      
Numerical investigation and self-similar solutions of the glacier-ocean interaction problem
      
By analyzing the equations involved [3, 6] it is possible to establish the principal factors and dimensionless numbers determining glacier dynamics and provide justification for neglecting the secondary terms.
      
In this case many of the qualitative characteristics of glacier dynamics are preserved even in one-dimensional models within the subisothermal approximation.
      
Permanent sea ice sheet existed during the deglaciation, and glacier meltwater was intensely delivered to the bottom layer.
      
Some biological objects found in the accreted lake ice, including bacteria, microalgae, and the pollen of higher plants, were morphologically similar to those found earlier in the glacier ice bulk.
      
It is suggested that the microorganisms found in the lake ice may come from different locations-the bottom layer of the glacier ice, the bedrock underlying the glacier, and the lake water.
      
The low population divergence is explained by a short time of existence of most of them, having been formed after the recession of the upper Pleistocene glacier.
      
Data are presented that concern specific features of primary plant community formation on the moraine complex of the Malyi Aktru Glacier (2190-2300 m a.s.l., Severo-Chuiskii Ridge, Central Altai), which dates from the Minor Glaciation Period.
      
The flora of liverworts has been studied in the vicinity of the Bil'chenok glacier (the Ushkovskii volcano, Kamchatka), which is in a zone of volcanic ash fallout.
      
Activity of the northern volcano group according to drilling data in the Ushkovsky crater glacier, Kamchatka
      
Long-term investigations in the Ushkovsky Volcano caldera were completed in June 1998 using deep drilling of the crater glacier filling the Gorshkov summit cone.
      
Environmental information recorded in shallow ice core of Dasuopu glacier in the Qinghai-Tibetan Plateau
      
The input of Pb to the Dasuopu Glacier is mainly supplied by Indian summer monsoon moisture which traverses the pass at the head of the Dasuopu Glacier.
      
During the past 4 300 years the coast terrace has risen about 18 m without apparently being destroyed, and the age of the glacier retreating process in this area is also earlier than 4 300 aBP.
      
s.I, from the Dasuopu Glacier in the central Himalayas.
      
The seasonal variations of δ18O values and major ion concentrations in the core indicate that present summer monsoon and dust signals are recorded with high-resolution in the Dasuopu Glacier.
      
 

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