The effects of thermodynamics on the Qinghai-Xizang Plateau is a problem that has for years received much attention from the meteorological circles in China as well as in other countries. It has been verified by many ...The effects of thermodynamics on the Qinghai-Xizang Plateau is a problem that has for years received much attention from the meteorological circles in China as well as in other countries. It has been verified by many objective facts that the earth’s surface of the Qinghai-Xizang Plateau is a huge heat source during the summer展开更多
Natural cosmogenic tritium or artificial tritium from thermonuclear tests takes the form of HTO to circulate. Before thermonuclear tests, the tritium content in precipitation was meagre, mean value 5—10 TU. After 195...Natural cosmogenic tritium or artificial tritium from thermonuclear tests takes the form of HTO to circulate. Before thermonuclear tests, the tritium content in precipitation was meagre, mean value 5—10 TU. After 1954, however, great influence has apparently been exerted by artificial tritium from numerous thermonuclear tests. In 1963,展开更多
Ⅰ. GENERAL CONDITION Situated on the northern slope of Daxue Mountain (大雪山) in the western part of Qilian Mts., Glacier No. 12 of Laohugou (老虎沟) is the longest valley glacier, covering an area of 21.45 km^2 wit...Ⅰ. GENERAL CONDITION Situated on the northern slope of Daxue Mountain (大雪山) in the western part of Qilian Mts., Glacier No. 12 of Laohugou (老虎沟) is the longest valley glacier, covering an area of 21.45 km^2 with 10 km in length. Its physical property is of significance in the continental glaciers of China. In 1959—62, the first Glacier Location Observa-展开更多
The meltwater from Tianshan Glaciers and the precipitation in that region are the main water resources for industry and agriculture in Xinjiang. In the region in which the highest peak of the Tianshan Mountains, Mt. T...The meltwater from Tianshan Glaciers and the precipitation in that region are the main water resources for industry and agriculture in Xinjiang. In the region in which the highest peak of the Tianshan Mountains, Mt. Tomur (托木尔) is located, there are over 600 glaciers, covering 3800 km^2, forming the largest region of glacier action.展开更多
The climatic history of China during recent centuries are not known in detail, though there exist many indirect evidences of the significant climatic change. Dendroclimatic analysis presents a very promising method to...The climatic history of China during recent centuries are not known in detail, though there exist many indirect evidences of the significant climatic change. Dendroclimatic analysis presents a very promising method to acquire information on the chronology展开更多
The process of the change in the frozen wall can be divided into four stages, i. e. the pre-circumscribed circling, the active freezing, the keep （or inactive） freezing and the natural recovery periods. It is assume...The process of the change in the frozen wall can be divided into four stages, i. e. the pre-circumscribed circling, the active freezing, the keep （or inactive） freezing and the natural recovery periods. It is assumed that the frozen holes are distributed on the circumference of a circle with radius R0 and the center concurrent with the center of digging shaft. Having a discussion on the water content together with the thermal effect and considering展开更多
In the section of fine-grained soil of regions with perennial and deep seasonally frozen ground, a crux to protect railroad, highway, water conservancy and other buildings from, frost damages is to reveal the laws of ...In the section of fine-grained soil of regions with perennial and deep seasonally frozen ground, a crux to protect railroad, highway, water conservancy and other buildings from, frost damages is to reveal the laws of water migration in the frozen, freezing and thawing soil. Most of the previous works on this subject have been concentrated on solving the problem of water migration from the unfrozen part of freezing ground towards the freezing front.展开更多
Beginning from the late sixties, American scientists, such as J. C. Barnes et al., have successfully studied snow hydrology and snow mapping from meteorological satellite images, SKYLAB EREP Data and landsat (formerly...Beginning from the late sixties, American scientists, such as J. C. Barnes et al., have successfully studied snow hydrology and snow mapping from meteorological satellite images, SKYLAB EREP Data and landsat (formerly ERTS). Soviet scientists have also investigated the problem of forecasting spring flood in the Volga River region and in central Asia from satellite data.展开更多
At the foot of Lushan widely distributes a group of red 'boulder-clay' diamictons, taken as an important evidence of Quaternary glaciation and called the piedmont glacial deposits of 'Dagu (Taku) Glaciatio...At the foot of Lushan widely distributes a group of red 'boulder-clay' diamictons, taken as an important evidence of Quaternary glaciation and called the piedmont glacial deposits of 'Dagu (Taku) Glaciation' by Prof. Li Siguang 50 years ago. He asserted categorically that 'those deposits would seem to point to the operation of a heretofore unknown process or processes if their glacial origin to be denied'. The scientists at that time had only rudimentary studies on diamictons and knew very展开更多
At the beginning of this century, the study of melting snow runoff promoted the measurement of spectral reflection characteristics of snow which, until 1947, were measured within the range from 400 to 900 nm only. Bec...At the beginning of this century, the study of melting snow runoff promoted the measurement of spectral reflection characteristics of snow which, until 1947, were measured within the range from 400 to 900 nm only. Because of the need of展开更多
Natural tritium (H^s), half-life 12.26 yr, is originated in the universe. Since 1954, a great deal of artificial tritium has been released by thermonuclear experiments, making the total volume of tritium in the world ...Natural tritium (H^s), half-life 12.26 yr, is originated in the universe. Since 1954, a great deal of artificial tritium has been released by thermonuclear experiments, making the total volume of tritium in the world an increase of several orders in magnitude. Increment of tritium content in natural water has become an ideal tracer element in the investigation of water cycle and being widely applied to scientific fields, such as hydrology, meteorology, oceanology, environment science and so on.展开更多
Ⅰ. CALCULATING THE POTENTIAL OF FREEZING In the permafrost regions where the active layer extends to continuous permafrost,the seasonal thawing can reach to its maximum, but the seasonal freezing cannot. It means the...Ⅰ. CALCULATING THE POTENTIAL OF FREEZING In the permafrost regions where the active layer extends to continuous permafrost,the seasonal thawing can reach to its maximum, but the seasonal freezing cannot. It means the potential freezing depth will be deeper than the thawing depth. The residual capacity which is not able to present itself as freeze soil is called the freezing potential. From the view point of energy analysis, the processes of freezing and thaw-展开更多
The Batura Glaeier lies on the northern slope of the Hunza Karakoram, northwest of the Karakoram Mountain System. It is a huge longitudinal valley glacier, with a length of 59.2 km and covering a total area of 285 km^...The Batura Glaeier lies on the northern slope of the Hunza Karakoram, northwest of the Karakoram Mountain System. It is a huge longitudinal valley glacier, with a length of 59.2 km and covering a total area of 285 km^2. The Karakoram Highway, built jointly by the People’s Republic of China and the Islamic Republic of Pakistan, passes not far away below the terminus of this glacier at the mileage between 115 and 119 km on the right bank of the Hunza River. To ascertain the changing features of the Ba-展开更多
A series of mountain systems and intermountane basins extend across the northern and western China. The largest of the basins are those of Tarim, Junggar and Qaidam. A thick sedimentary sequence has been deposited in ...A series of mountain systems and intermountane basins extend across the northern and western China. The largest of the basins are those of Tarim, Junggar and Qaidam. A thick sedimentary sequence has been deposited in these basins during the Cenozoic. Accordingly, the region has great potential for the study of the Quaternary stratigraphy. However, information on the Quaternary sedimentology and chronostratigraphy of this huge region is sparse.展开更多
The microparticle concentration in an ice core from coast area, East Antarctica, has been measured by a Coulter counter and optic counting. It is proposed in the present paper that the microparticle concentrations in ...The microparticle concentration in an ice core from coast area, East Antarctica, has been measured by a Coulter counter and optic counting. It is proposed in the present paper that the microparticle concentrations in different areas are different, especially from the coast to the inland in Antarctica. After its comparison with microparticle concentrations from other cores, it is also proposed that there is a lag between the coldest climate (i. e. 18 ka B. P.) and the highest microparticle concentration.展开更多
文摘The effects of thermodynamics on the Qinghai-Xizang Plateau is a problem that has for years received much attention from the meteorological circles in China as well as in other countries. It has been verified by many objective facts that the earth’s surface of the Qinghai-Xizang Plateau is a huge heat source during the summer
文摘Natural cosmogenic tritium or artificial tritium from thermonuclear tests takes the form of HTO to circulate. Before thermonuclear tests, the tritium content in precipitation was meagre, mean value 5—10 TU. After 1954, however, great influence has apparently been exerted by artificial tritium from numerous thermonuclear tests. In 1963,
文摘Ⅰ. GENERAL CONDITION Situated on the northern slope of Daxue Mountain (大雪山) in the western part of Qilian Mts., Glacier No. 12 of Laohugou (老虎沟) is the longest valley glacier, covering an area of 21.45 km^2 with 10 km in length. Its physical property is of significance in the continental glaciers of China. In 1959—62, the first Glacier Location Observa-
文摘The meltwater from Tianshan Glaciers and the precipitation in that region are the main water resources for industry and agriculture in Xinjiang. In the region in which the highest peak of the Tianshan Mountains, Mt. Tomur (托木尔) is located, there are over 600 glaciers, covering 3800 km^2, forming the largest region of glacier action.
文摘The climatic history of China during recent centuries are not known in detail, though there exist many indirect evidences of the significant climatic change. Dendroclimatic analysis presents a very promising method to acquire information on the chronology
文摘The process of the change in the frozen wall can be divided into four stages, i. e. the pre-circumscribed circling, the active freezing, the keep （or inactive） freezing and the natural recovery periods. It is assumed that the frozen holes are distributed on the circumference of a circle with radius R0 and the center concurrent with the center of digging shaft. Having a discussion on the water content together with the thermal effect and considering
文摘In the section of fine-grained soil of regions with perennial and deep seasonally frozen ground, a crux to protect railroad, highway, water conservancy and other buildings from, frost damages is to reveal the laws of water migration in the frozen, freezing and thawing soil. Most of the previous works on this subject have been concentrated on solving the problem of water migration from the unfrozen part of freezing ground towards the freezing front.
文摘Beginning from the late sixties, American scientists, such as J. C. Barnes et al., have successfully studied snow hydrology and snow mapping from meteorological satellite images, SKYLAB EREP Data and landsat (formerly ERTS). Soviet scientists have also investigated the problem of forecasting spring flood in the Volga River region and in central Asia from satellite data.
文摘At the foot of Lushan widely distributes a group of red 'boulder-clay' diamictons, taken as an important evidence of Quaternary glaciation and called the piedmont glacial deposits of 'Dagu (Taku) Glaciation' by Prof. Li Siguang 50 years ago. He asserted categorically that 'those deposits would seem to point to the operation of a heretofore unknown process or processes if their glacial origin to be denied'. The scientists at that time had only rudimentary studies on diamictons and knew very
文摘At the beginning of this century, the study of melting snow runoff promoted the measurement of spectral reflection characteristics of snow which, until 1947, were measured within the range from 400 to 900 nm only. Because of the need of
文摘Natural tritium (H^s), half-life 12.26 yr, is originated in the universe. Since 1954, a great deal of artificial tritium has been released by thermonuclear experiments, making the total volume of tritium in the world an increase of several orders in magnitude. Increment of tritium content in natural water has become an ideal tracer element in the investigation of water cycle and being widely applied to scientific fields, such as hydrology, meteorology, oceanology, environment science and so on.
文摘Ⅰ. CALCULATING THE POTENTIAL OF FREEZING In the permafrost regions where the active layer extends to continuous permafrost,the seasonal thawing can reach to its maximum, but the seasonal freezing cannot. It means the potential freezing depth will be deeper than the thawing depth. The residual capacity which is not able to present itself as freeze soil is called the freezing potential. From the view point of energy analysis, the processes of freezing and thaw-
文摘The Batura Glaeier lies on the northern slope of the Hunza Karakoram, northwest of the Karakoram Mountain System. It is a huge longitudinal valley glacier, with a length of 59.2 km and covering a total area of 285 km^2. The Karakoram Highway, built jointly by the People’s Republic of China and the Islamic Republic of Pakistan, passes not far away below the terminus of this glacier at the mileage between 115 and 119 km on the right bank of the Hunza River. To ascertain the changing features of the Ba-
文摘A series of mountain systems and intermountane basins extend across the northern and western China. The largest of the basins are those of Tarim, Junggar and Qaidam. A thick sedimentary sequence has been deposited in these basins during the Cenozoic. Accordingly, the region has great potential for the study of the Quaternary stratigraphy. However, information on the Quaternary sedimentology and chronostratigraphy of this huge region is sparse.
文摘The microparticle concentration in an ice core from coast area, East Antarctica, has been measured by a Coulter counter and optic counting. It is proposed in the present paper that the microparticle concentrations in different areas are different, especially from the coast to the inland in Antarctica. After its comparison with microparticle concentrations from other cores, it is also proposed that there is a lag between the coldest climate (i. e. 18 ka B. P.) and the highest microparticle concentration.
