China Seismo-Electromagnetic Satellite （CSES） will be launched at the end of 2016 and the orbit is sun- synchronous and the altitude is about 500 km. The design of CSES satellite and ground segment are introduced in...China Seismo-Electromagnetic Satellite （CSES） will be launched at the end of 2016 and the orbit is sun- synchronous and the altitude is about 500 km. The design of CSES satellite and ground segment are introduced in this paper first. And then the preliminary proposals of scientific data verification and cross-verification in CSES mission are given, which can be used to classify the payloads＇ operation state, and validate the reliability of data.展开更多
Radioecological Assessment of the Uranium Tailings in Tuyuk-Suu （Kyrgyzstan）. The aim of our research is the radioecological assessment of the current state of uranium tailings in Tuyuk-Suu. The methods of field and...Radioecological Assessment of the Uranium Tailings in Tuyuk-Suu （Kyrgyzstan）. The aim of our research is the radioecological assessment of the current state of uranium tailings in Tuyuk-Suu. The methods of field and laboratory analysis were conducted with the modem radiological and nuclear physics equipment. Gamma survey was shown that the surface of the tailings Tuyuk-Suu and Taldy-Bulak may effectively reduce the exposure dose of gamma radiation, the body Tuyuk Suu is flooding with water flowing near the river in a concrete channel, so it should be constantly monitoring the state of the tailings and the river Tuyuk-Suu. In this article is given the analysis and estimates of the current radiation condition of the tailings dam and Min-Kush settlement. It was for the first time made the radiological analysis after closing of the uranium tailings in a body of the most tail material and it is estimated states possible pollution to environment.展开更多
The decreasing of Arctic sea ice is projected to continue with global warming,which makes the summer navigation conditions of the Arctic improve.Based on the multi-source remote-sensing data with inter-sensor calibrat...The decreasing of Arctic sea ice is projected to continue with global warming,which makes the summer navigation conditions of the Arctic improve.Based on the multi-source remote-sensing data with inter-sensor calibration processing and the ship-based observational data from R/V Xuelong and M/V Yongsheng,the sea ice conditions of the Arctic Northeast Passage(NEP)during the 2002-2021 summer seasons were analyzed,and the navigability of the NEP between July and October from 2002 to 2021 was discussed.Inter-sensor calibration could effectively reduce the deviation from different passive microwave data.Sea ice extent and thickness in the NEP decreased annually,which resulted in the navigability of the NEP showing a potential tendency toward improvement in navigability.The navigation period was mainly concentrated in early August to early October.The middle part of the NEP was primarily affected by sea ice.This influence decreased over time,while the navigation period increased,especially in the Vilkitsky Strait,which is a key shipping area.This analysis of sea ice conditions and navigability in the past 20 years could provide a reference for future scientific investigations and aid in merchant ship navigation in the Arctic summer.展开更多
基金supported by the civil space project "CSES Scientific Data Verification Technology Research"National Natural Science Foundation of China(granted No.41374127)
文摘China Seismo-Electromagnetic Satellite （CSES） will be launched at the end of 2016 and the orbit is sun- synchronous and the altitude is about 500 km. The design of CSES satellite and ground segment are introduced in this paper first. And then the preliminary proposals of scientific data verification and cross-verification in CSES mission are given, which can be used to classify the payloads＇ operation state, and validate the reliability of data.
文摘Radioecological Assessment of the Uranium Tailings in Tuyuk-Suu （Kyrgyzstan）. The aim of our research is the radioecological assessment of the current state of uranium tailings in Tuyuk-Suu. The methods of field and laboratory analysis were conducted with the modem radiological and nuclear physics equipment. Gamma survey was shown that the surface of the tailings Tuyuk-Suu and Taldy-Bulak may effectively reduce the exposure dose of gamma radiation, the body Tuyuk Suu is flooding with water flowing near the river in a concrete channel, so it should be constantly monitoring the state of the tailings and the river Tuyuk-Suu. In this article is given the analysis and estimates of the current radiation condition of the tailings dam and Min-Kush settlement. It was for the first time made the radiological analysis after closing of the uranium tailings in a body of the most tail material and it is estimated states possible pollution to environment.
基金supported by the National Key Research and Development Program of China[grant number 2017YFA0603104]the National Natural Science Foundation of China[grant number 42076235]+1 种基金the Fundamental Research Funds for the Central Universities[grant number 2042022kf0018]the Special Fund for High Resolution Images Surveying and Mapping Application[grant number 42-Y30B04-9001-19/21]。
文摘The decreasing of Arctic sea ice is projected to continue with global warming,which makes the summer navigation conditions of the Arctic improve.Based on the multi-source remote-sensing data with inter-sensor calibration processing and the ship-based observational data from R/V Xuelong and M/V Yongsheng,the sea ice conditions of the Arctic Northeast Passage(NEP)during the 2002-2021 summer seasons were analyzed,and the navigability of the NEP between July and October from 2002 to 2021 was discussed.Inter-sensor calibration could effectively reduce the deviation from different passive microwave data.Sea ice extent and thickness in the NEP decreased annually,which resulted in the navigability of the NEP showing a potential tendency toward improvement in navigability.The navigation period was mainly concentrated in early August to early October.The middle part of the NEP was primarily affected by sea ice.This influence decreased over time,while the navigation period increased,especially in the Vilkitsky Strait,which is a key shipping area.This analysis of sea ice conditions and navigability in the past 20 years could provide a reference for future scientific investigations and aid in merchant ship navigation in the Arctic summer.
