Results show that from 1970 to 2000, lake area increased from 1941.64 km2 to 1979.79 km2 with a rate of 1.27 km2/a, while glacier area decreased from 167.62 km2 to 141.88 km2 with a rate of 0.86 km2/a.
Intercalated among these time period, the climate was relatively drier and colder during 71～12ka, 188～130ka, 380～334ka, 471～428ka, 658～576ka, 853～788ka, 1273～1265ka and 1727～1640ka, probably correlated with expansion of the mountain glaciers.
Based on investigations and studies of modern and ancient glaciers around the Tanggula Pass,dating of cosmogenic radionuclide 10Be exposure age of the last glacial moraine bounders(or striated outcrops) of this region,four data,i. e. ,(16.1±1.7) ka BP,(31.9±3.4) ka BP,(41.4±4.3) ka BP and(66.8±4.3) ka BP,were gained.
在野外综合考察的基础上,对唐古拉山垭口地区末次冰期的冰碛漂砾(或有冰川擦痕的露头)进行了宇生核素10Be暴露年龄的测定,得到(16.1±1.7)ka BP、(31.9±3.4)ka BP、(41.4±4.3)kaBP和(66.8±4.3)ka BP 4个测年数据.
With methods of high pressure liquid chromatogram (HPLC) or thin layer chromatogram (TLC), the content of 2,2,6,6-tetramethyl-4-piperidone (TMPD) in Glacial crazyweed (Oxytropis glacialis) was 0.082～0.085% and the contents of other two unknown alkaloids were only 0.0097% and 0.0051% respectively.
Hanasi Lake located in Buerjin County,Aertai Region,Xinjiang Prov- ince,48°43′—48°54′N,86°59′—87°09′E,has an area of 45km~2,average depth 120.1m,and maximum depth 188.5m,belonging to a tectonic-glacial deposit dam lake formed by glacial erosion.
The alkaloid crystal I isolated from glacial crazyweed ( Oxytropis glacialis Benth ex Bye) in Ali prefecture in Tibet was identified as 2,2,6,6-tetramethyl-4-piperidone (TMPD) with infrared spectrophotometer, nuclear magnetic resonance spectrophotometer and data base system.
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
The distribution of Abies was deeply influenced by geological events such as the uplift of Himalaya, the Alps, the Rocky Mountains, the occurrence of the Asian Monsoon as well as the Quaternary glaciers.
The problem of stationary inner heating of cold glaciers is considered in [1, 2].
The mathematical modeling of the heat and mass transfer processes in glaciers is an effective means of investigating and predicting their development.
The Pechora till formed in the course of motions of glaciers from the northeast.
The advances and retreats of glaciers and the accompanying regressions and transgressions of the ocean level caused isolation of chum salmon in the refugia belonging hypothetically to the paleo-Shuifen and paleo-Amur regions.
These data suggest that the subspecies has been rapidly spreading northwards since the Pleistocene glaciation (about 15,000 years ago).
In our view, microgeographic subdivision of the populations is caused by recurrent fragmentation of habitats during the Pleistocene glaciation of the Bale Massif and subsequent prolonged isolation of local populations.
The types of mtDNA genetic variability and mismatch distribution between haplotypes in the populations indicate that the southern regions of the Sea of Okhotsk and Sea of Japan served as refugia for chum salmon during glaciation periods.
Differences between the seasonal races of the Amur chum salmon are insignificant, and their emergence dates back to the period of the last Wisconsinian glaciation.
Chromosomal inversion polymorphism was studied in a natural population of Drosophila subobscura from the Djerdap gorge of the Danube River, which is one of southeastern European continental refugia during the last glaciation period.
These corresponding chalcones were reacted with phenyl hydrazide in glacial acetic acid, which led to the formation of novel 4-[5-(substituted phenyl)-1-phenyl-4,5-dihydro-1H-3-pyrazolyl]-2-methylphenol derivatives.
15 m/ka occurred in the mono-depositional sink of the former Changjiang River mouth during 10 000-8000 aBP, when post-glacial transgression happened and the Changjiang water level remained at lower stand.
The Role of Glacial Epochs in the Formation of Chromosomal Polymorphism in the Common Shrew Sorex araneus L.
Lemmings of Bolshevik Island (the Severnaya Zemlya Archipelago) is a Relict of the Last Glacial Epoch
A procedure for the determination of sodium salts of methyl sulfamic acid as tertiary amines by acidimétrie titration in glacial acetic acid was developed.