The South pole aera offers one of the best locations on the Earth for studying the composition of the background aerosol. For this purpose, aerosol samples were collected in particle size fractions by 8 stages cascade...The South pole aera offers one of the best locations on the Earth for studying the composition of the background aerosol. For this purpose, aerosol samples were collected in particle size fractions by 8 stages cascade impactors. Aerosol sampling was begun in Jan. and finished in Dec. 1986 at the St. Great Wall, South Pole. The samples were analysed by Proton Induced X-ray Emission (PIXE) method. In order to learn the enrichment factors of various elements all the results were separated into two groups: coarse (> 10μm) and fine (< 10μm) particles. The correlation coefficients of elements of both coarse and fine particles were discussed. The aerosol levels measured at St. Great Wall were compared to those recently measured at some other locations. It can be concluded the South Pole is a good background area on the Earth.展开更多
There are diverse and contradictory opinions about of the existence of the global warming.Is not easy to find papers that explain with enough detail,how to measure the atmospheric temperature that support this stateme...There are diverse and contradictory opinions about of the existence of the global warming.Is not easy to find papers that explain with enough detail,how to measure the atmospheric temperature that support this statement.In this context,the south pole is a one the most marked geographical areas,as harmed by global warming.Nevertheless,our last research work showed that during the year 2018,the Antartica cooled almost 1℃.In this situation,and in order to clarify this question,we decided to undertake our own research work.We had used as data source,the value collected by Amundsen-Scott sounding.This base is the most near to the geographic south pole.All its measurements are available in the web site of Wyoming University.With these data,we calculate the average temperature from the surface level to the mayor high level that arrive the sounding balloon.Each day,each month;since January l of 2018 to December 31 of 2019.The result obtained from our study,cast doubt the existence of the atmospheric warm over the south pole.展开更多
A comparison of theoretical seismograms under discussion with four teleseismograms recorded by WWSSN of SBA(New Zealand) and SPA (U.S.A.),shows that the crustal thickness beneath South Pole is a double-layered structu...A comparison of theoretical seismograms under discussion with four teleseismograms recorded by WWSSN of SBA(New Zealand) and SPA (U.S.A.),shows that the crustal thickness beneath South Pole is a double-layered structure, about 45 km ; crustal thickness below the Ross Sea Beach,a single structure, is about 24 km ;and at the depth of 350～450 km there exists a low velocity layer. The above results indicate the different tectonic characteristics on both sides of Antarctic Transantarctic Mountains.展开更多
[ Objective] The research aimed to contrast and analyze meteorological factors between Zhongshan station of the South Pole and Chi- nese inland. [ Method ] Based on meteorological observation data at Zhongshan station...[ Objective] The research aimed to contrast and analyze meteorological factors between Zhongshan station of the South Pole and Chi- nese inland. [ Method ] Based on meteorological observation data at Zhongshan station of the South Pole since established, contrast and analysis were taken on the atmospheric temperature, relative humidity and atmospheric pressure with that at Shanghe station of Chinese inland, to find out variation laws of the each meteorological factor in the two stations, and to analyze different change relations among factors. [ Result] Although geo- graphic positions of the two stations were different, and they were respectively in south and north hemispheres, each meteorological factor at the two stations had same change rules. Interannual anomaly relationship of the meteorological factor had certain rule. That was to say, variation of the positive or negative anomaly advanced or lagged for 1 -2 years. [ Conclusion] The research had reference value for studying global climatic variation.展开更多
In recent years,the Lunar south pole region(SPR)has become the focus of future explorations due to its special illumination condition and the possible water ice in permanently shadowed craters around it.The Shackleton...In recent years,the Lunar south pole region(SPR)has become the focus of future explorations due to its special illumination condition and the possible water ice in permanently shadowed craters around it.The Shackleton crater locates almost exactly at the Moon’s south pole and has become the hottest destination for several landing missions,including the Chang’E-7 mission.However,people still know little about the electric potential and the dust environment around this crater.In this paper,we develop an analytical model to study the surface potential and the electrostatic dust transport around the crater.It is found that the crater’s floor can be negatively charged due to the topographic shielding,and the surface potential is as low as-175 V on the leeward crater wall.Accordingly,a large number of charged dust grains can be emitted from the leeward crater wall,with a maximum height of about 10 km and a horizontal distance of about 40 km,which brings a local dust cloud around the crater.Both the topographic shielding and the local dust cloud are qualitatively verified by a numerical simulation,in which a typical dust density of 10^(4)-10^(5)m^(-3)is found near the crater.Our results are important to the environmental assessment for future explorations near the crater.Furthermore,the results are helpful to understand the surface charging and the electrostatic dust transport on the other airless bodies.展开更多
On the 14th of September,1994, the fastest scientific instrument in space passed the south pole of the Sun,a place where no human-made object has been before. A spaceprobe called Ulysses made the polar pass at about m...On the 14th of September,1994, the fastest scientific instrument in space passed the south pole of the Sun,a place where no human-made object has been before. A spaceprobe called Ulysses made the polar pass at about midday as it continued to collect data on the solar wind,a stream of high-energy展开更多
We performed on paleomagnetic investigation of the Upper Cretaceous red sandstones collected from Fujiau and Guangdong provinces. Significant characteristic directions were isolated by principal comPonent analysis fro...We performed on paleomagnetic investigation of the Upper Cretaceous red sandstones collected from Fujiau and Guangdong provinces. Significant characteristic directions were isolated by principal comPonent analysis from 22 of 25 and 9 of 14 sampling sites iu Fujian and Guangdong,respectively. Maximum concentration of global mean directions every province is achieved at 70 %and complete (100 % ) untilting for Fujian and Guangdong, respectively. We regarded these mean directions as the Late Cretaceous paleomagnetic directions and calculated virtual geomagnetic poles (VGPs); Fujian, Lat. /Lon. = 79. 4°N/210. 3°E (α95= 5. 1°) and Guangdong, Lat. /Lon. = 80. 1°N/193. 4°E (α95=8. 0°). These two VGPs are nearly equal to each other and to a mean VGP from Sichuan Province reported previously. This observation suggests no relative movement among three regions, Fujian, Guangdong and Sichuan, since the Late Cretaceous. Two VGPs from this study are significantly different from previously reported VGPs from the same regions. Further systematic paleomagnetic works are needed to clarify this difference of VGP Positions.展开更多
文摘The South pole aera offers one of the best locations on the Earth for studying the composition of the background aerosol. For this purpose, aerosol samples were collected in particle size fractions by 8 stages cascade impactors. Aerosol sampling was begun in Jan. and finished in Dec. 1986 at the St. Great Wall, South Pole. The samples were analysed by Proton Induced X-ray Emission (PIXE) method. In order to learn the enrichment factors of various elements all the results were separated into two groups: coarse (> 10μm) and fine (< 10μm) particles. The correlation coefficients of elements of both coarse and fine particles were discussed. The aerosol levels measured at St. Great Wall were compared to those recently measured at some other locations. It can be concluded the South Pole is a good background area on the Earth.
文摘There are diverse and contradictory opinions about of the existence of the global warming.Is not easy to find papers that explain with enough detail,how to measure the atmospheric temperature that support this statement.In this context,the south pole is a one the most marked geographical areas,as harmed by global warming.Nevertheless,our last research work showed that during the year 2018,the Antartica cooled almost 1℃.In this situation,and in order to clarify this question,we decided to undertake our own research work.We had used as data source,the value collected by Amundsen-Scott sounding.This base is the most near to the geographic south pole.All its measurements are available in the web site of Wyoming University.With these data,we calculate the average temperature from the surface level to the mayor high level that arrive the sounding balloon.Each day,each month;since January l of 2018 to December 31 of 2019.The result obtained from our study,cast doubt the existence of the atmospheric warm over the south pole.
文摘A comparison of theoretical seismograms under discussion with four teleseismograms recorded by WWSSN of SBA(New Zealand) and SPA (U.S.A.),shows that the crustal thickness beneath South Pole is a double-layered structure, about 45 km ; crustal thickness below the Ross Sea Beach,a single structure, is about 24 km ;and at the depth of 350～450 km there exists a low velocity layer. The above results indicate the different tectonic characteristics on both sides of Antarctic Transantarctic Mountains.
文摘[ Objective] The research aimed to contrast and analyze meteorological factors between Zhongshan station of the South Pole and Chi- nese inland. [ Method ] Based on meteorological observation data at Zhongshan station of the South Pole since established, contrast and analysis were taken on the atmospheric temperature, relative humidity and atmospheric pressure with that at Shanghe station of Chinese inland, to find out variation laws of the each meteorological factor in the two stations, and to analyze different change relations among factors. [ Result] Although geo- graphic positions of the two stations were different, and they were respectively in south and north hemispheres, each meteorological factor at the two stations had same change rules. Interannual anomaly relationship of the meteorological factor had certain rule. That was to say, variation of the positive or negative anomaly advanced or lagged for 1 -2 years. [ Conclusion] The research had reference value for studying global climatic variation.
基金supported by the Youth Innovation Promotion Association of the Chinese Academy of Sciencessupported by the National Natural Science Foundation of China(Grant Nos.42174216,12075108,41903058&62371215)+2 种基金the Pre-research Project on Civil Aerospace Technologies by CNSA(Grant Nos.D050106,D020201)the Frontier Science Research Program of Deep Space Exploration Laboratory(Grant No.2022-QYKYJH-HXYF023)the Pandeng Program of National Space Science Center,Chinese Academy of Sciences。
文摘In recent years,the Lunar south pole region(SPR)has become the focus of future explorations due to its special illumination condition and the possible water ice in permanently shadowed craters around it.The Shackleton crater locates almost exactly at the Moon’s south pole and has become the hottest destination for several landing missions,including the Chang’E-7 mission.However,people still know little about the electric potential and the dust environment around this crater.In this paper,we develop an analytical model to study the surface potential and the electrostatic dust transport around the crater.It is found that the crater’s floor can be negatively charged due to the topographic shielding,and the surface potential is as low as-175 V on the leeward crater wall.Accordingly,a large number of charged dust grains can be emitted from the leeward crater wall,with a maximum height of about 10 km and a horizontal distance of about 40 km,which brings a local dust cloud around the crater.Both the topographic shielding and the local dust cloud are qualitatively verified by a numerical simulation,in which a typical dust density of 10^(4)-10^(5)m^(-3)is found near the crater.Our results are important to the environmental assessment for future explorations near the crater.Furthermore,the results are helpful to understand the surface charging and the electrostatic dust transport on the other airless bodies.
文摘On the 14th of September,1994, the fastest scientific instrument in space passed the south pole of the Sun,a place where no human-made object has been before. A spaceprobe called Ulysses made the polar pass at about midday as it continued to collect data on the solar wind,a stream of high-energy
文摘We performed on paleomagnetic investigation of the Upper Cretaceous red sandstones collected from Fujiau and Guangdong provinces. Significant characteristic directions were isolated by principal comPonent analysis from 22 of 25 and 9 of 14 sampling sites iu Fujian and Guangdong,respectively. Maximum concentration of global mean directions every province is achieved at 70 %and complete (100 % ) untilting for Fujian and Guangdong, respectively. We regarded these mean directions as the Late Cretaceous paleomagnetic directions and calculated virtual geomagnetic poles (VGPs); Fujian, Lat. /Lon. = 79. 4°N/210. 3°E (α95= 5. 1°) and Guangdong, Lat. /Lon. = 80. 1°N/193. 4°E (α95=8. 0°). These two VGPs are nearly equal to each other and to a mean VGP from Sichuan Province reported previously. This observation suggests no relative movement among three regions, Fujian, Guangdong and Sichuan, since the Late Cretaceous. Two VGPs from this study are significantly different from previously reported VGPs from the same regions. Further systematic paleomagnetic works are needed to clarify this difference of VGP Positions.
