Ⅰ. REVIEW The Institute of Theoretical Physics (ITP) of the CAS was founded in 1978 with the personal approval of Comrade Deng Xiaoping, in the same year when the Third Plenary Session of the Central Committee of the...Ⅰ. REVIEW The Institute of Theoretical Physics (ITP) of the CAS was founded in 1978 with the personal approval of Comrade Deng Xiaoping, in the same year when the Third Plenary Session of the Central Committee of the CPC (Communist Party of China) was convened. Over the past 20 years, the Institute has been striving to explore a road for sound development in a bid to achieve the following targets: In regard to research, the institute strives展开更多
The phase of a system of quantum states is calculated as the Selenu’s phase, else as the circulation of the quantum momentum linear connection. The latter is shown to be the quantum potential generated by translation...The phase of a system of quantum states is calculated as the Selenu’s phase, else as the circulation of the quantum momentum linear connection. The latter is shown to be the quantum potential generated by translations of the quantum states of the linear momentum of the quantum wave fields.展开更多
A conference on Future of Earth-Space Science and Education(Future ESSE)was held in the Abdus Salam International Centre of Theoretical Physics(ICTP)in Trieste from 2nd to 6th November 2015.ICTP is governed by UNESCO,...A conference on Future of Earth-Space Science and Education(Future ESSE)was held in the Abdus Salam International Centre of Theoretical Physics(ICTP)in Trieste from 2nd to 6th November 2015.ICTP is governed by UNESCO,IAEA,and Italy,and is a UNESCO Category 1 Institute.The conference was organized by our sister union IUGG and was followed by the annual meeting of ICSU’s GeoUnions from 6^(th) to 7^(th )November.展开更多
Density and elastic modulus change ratios are introduced to describe the sound velocity of submarine sediment. The density change ratio is a composite parameter describing the sound velocity. It is expressed by three ...Density and elastic modulus change ratios are introduced to describe the sound velocity of submarine sediment. The density change ratio is a composite parameter describing the sound velocity. It is expressed by three physical parameters： porosity, solid phase density and seawater density. The elastic modulus change ratio is also a composite parameter of sound velocity. It is expressed by three physical parameters, including porosity, solid phase modulus and seawater bulk modulus. The sound velocity formula can be developed into a Taylor polyno- mial formula of these two composite parameters. The change in the two composite parameters constitutes the sound velocity surface, which contains the complete information regarding ve- locity properties and sediment characteristics. The one-parameter velocity formula is a curve on the velocity surface. Each porosity-velocity empirical formula, which represents various sea locations and conditions, is transformed to a standard form. This result is the product of a reference velocity and a modulation function. Comparisons of the numerical calculation and measurements show that the derived modulation functions yield similar results. The difference between the velocity formula derived in this paper and the Wood velocity formula is due to the elastic modulus models.展开更多
文摘Ⅰ. REVIEW The Institute of Theoretical Physics (ITP) of the CAS was founded in 1978 with the personal approval of Comrade Deng Xiaoping, in the same year when the Third Plenary Session of the Central Committee of the CPC (Communist Party of China) was convened. Over the past 20 years, the Institute has been striving to explore a road for sound development in a bid to achieve the following targets: In regard to research, the institute strives
文摘The phase of a system of quantum states is calculated as the Selenu’s phase, else as the circulation of the quantum momentum linear connection. The latter is shown to be the quantum potential generated by translations of the quantum states of the linear momentum of the quantum wave fields.
文摘A conference on Future of Earth-Space Science and Education(Future ESSE)was held in the Abdus Salam International Centre of Theoretical Physics(ICTP)in Trieste from 2nd to 6th November 2015.ICTP is governed by UNESCO,IAEA,and Italy,and is a UNESCO Category 1 Institute.The conference was organized by our sister union IUGG and was followed by the annual meeting of ICSU’s GeoUnions from 6^(th) to 7^(th )November.
基金supported by the National Natural Science Foundation of China(41176034,41476028)the Natural Science Foundation of Guangdong,China(10151009001000052)the Key Laboratory of Marine Mineral Resources,Ministry of Land and Resources(KLMMR-2014-B-03)
文摘Density and elastic modulus change ratios are introduced to describe the sound velocity of submarine sediment. The density change ratio is a composite parameter describing the sound velocity. It is expressed by three physical parameters： porosity, solid phase density and seawater density. The elastic modulus change ratio is also a composite parameter of sound velocity. It is expressed by three physical parameters, including porosity, solid phase modulus and seawater bulk modulus. The sound velocity formula can be developed into a Taylor polyno- mial formula of these two composite parameters. The change in the two composite parameters constitutes the sound velocity surface, which contains the complete information regarding ve- locity properties and sediment characteristics. The one-parameter velocity formula is a curve on the velocity surface. Each porosity-velocity empirical formula, which represents various sea locations and conditions, is transformed to a standard form. This result is the product of a reference velocity and a modulation function. Comparisons of the numerical calculation and measurements show that the derived modulation functions yield similar results. The difference between the velocity formula derived in this paper and the Wood velocity formula is due to the elastic modulus models.
