The earth gravity field model CDS01S of degree and order 36 has been recovered from the post processed Science Orbits and on-board accelerometer data of GFZ’s CHAMP satellite. The model resolves the geoid with an acc...The earth gravity field model CDS01S of degree and order 36 has been recovered from the post processed Science Orbits and on-board accelerometer data of GFZ’s CHAMP satellite. The model resolves the geoid with an accuracy of better than 4 cm at a resolution of 700 km half-wavelength. By using the degree difference variances of geopotential coefficients to compare the model CDS01S with EIGEN3P, EIGEN1S and EGM96, the result indicates that the coefficients of CDS01S are most close to those of EIGEN3P. The result of the comparison between the accuracies of geopotential coefficients in the above models, indicates that the accuracy of coefficients in CDS01S is higher than that in EGM96.The geoid undulations of CDS01S and GGM01C up to 30 degrees are calculated and the standard deviation is 4.7 cm between them.展开更多
This paper first explores the development and direction of disaster and emergency medicine in China and abroad from the perspective of international environment and history background, analyses four elements of disast...This paper first explores the development and direction of disaster and emergency medicine in China and abroad from the perspective of international environment and history background, analyses four elements of disaster and emergency medicine, including subject content, professionals, education practice and technical innovation, clarifies the interdependency between disaster medicine and emergency medicine, and reveals the developing rules of disaster medicine and emergency medicine. It also provides suggestions for China's development of disaster medicine and emergency medicine.展开更多
文摘The earth gravity field model CDS01S of degree and order 36 has been recovered from the post processed Science Orbits and on-board accelerometer data of GFZ’s CHAMP satellite. The model resolves the geoid with an accuracy of better than 4 cm at a resolution of 700 km half-wavelength. By using the degree difference variances of geopotential coefficients to compare the model CDS01S with EIGEN3P, EIGEN1S and EGM96, the result indicates that the coefficients of CDS01S are most close to those of EIGEN3P. The result of the comparison between the accuracies of geopotential coefficients in the above models, indicates that the accuracy of coefficients in CDS01S is higher than that in EGM96.The geoid undulations of CDS01S and GGM01C up to 30 degrees are calculated and the standard deviation is 4.7 cm between them.
基金National Key Research Program(2017YFC0806702-8)。
文摘This paper first explores the development and direction of disaster and emergency medicine in China and abroad from the perspective of international environment and history background, analyses four elements of disaster and emergency medicine, including subject content, professionals, education practice and technical innovation, clarifies the interdependency between disaster medicine and emergency medicine, and reveals the developing rules of disaster medicine and emergency medicine. It also provides suggestions for China's development of disaster medicine and emergency medicine.
