全文获取类型
收费全文 | 89篇 |
免费 | 3篇 |
国内免费 | 2篇 |
专业分类
大气科学 | 8篇 |
地球物理 | 13篇 |
地质学 | 27篇 |
海洋学 | 19篇 |
天文学 | 24篇 |
自然地理 | 3篇 |
出版年
2020年 | 3篇 |
2018年 | 3篇 |
2017年 | 3篇 |
2015年 | 1篇 |
2014年 | 3篇 |
2013年 | 4篇 |
2012年 | 4篇 |
2011年 | 3篇 |
2010年 | 1篇 |
2009年 | 5篇 |
2008年 | 5篇 |
2007年 | 5篇 |
2006年 | 6篇 |
2005年 | 5篇 |
2004年 | 6篇 |
2003年 | 1篇 |
2002年 | 3篇 |
2001年 | 3篇 |
2000年 | 2篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1996年 | 2篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1989年 | 1篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有94条查询结果,搜索用时 67 毫秒
91.
Noriyuki Iwata 《Journal of Oceanography》1983,39(2):43-52
Backscatter cross-sections of microwaves from the sea surface are calculated by using the facet model and are compared withJonswap '75 experimental results. The principal features obtained are: (1) asymmetry of backscatter cross-sections between upwind and downwind directions is attributable to the modulation of the short gravity-capillary wave spectrum by a larger wave, and the non-Gaussian wave slope distribution has a tendency to cancel this effect, (2) angular spreading of the energy spectrum in the higher frequency range should have a narrower band than a simple cosine distribution, (3) the facet model itself should begin to break down at a larger incident angle than previously supposed. 相似文献
92.
Noriyuki Iwata 《Journal of Oceanography》1971,27(3):102-108
Two-dimensional ocean wave spectrum developing under the atmospheric surface pressure fluctuations is linearly correlated with that of wind pressure itself, so that angular distribution of energy of ocean surface waves can be determined by directional properties of surface pressure fluctuations with the same frequency to the surface wave.From empirically determined spectral formula of the atmospheric surface pressure fluctuations the coefficients of Fourier series expanded around mean direction of wind are analytically integrated, from which r.m.s. angular distribution, spectral peakedness and long-crestedness are calculated, compared with previously proposed empirical formulae and observations carried out by ultrasonic current meter. 相似文献
93.
Osamu Chiba 《Boundary-Layer Meteorology》1984,29(4):313-319
Several experimental results indicate that S
w (the skewness of the vertical turbulent velocity) increases with height, and K
w (the kurtosis) decreases with height in the neutral surface layer. The measured behavior of S
w and K
w with height under neutral conditions is shown to be consistent with available models for the gradient-diffusion and the pressure-velocity correlation. In addition, an estimate of the mode of the probability density distribution turns out to be helpful in interpreting the height dependence of K
w. 相似文献
94.