共查询到20条相似文献，搜索用时 31 毫秒
1.
2.
I. Paulino H. Takahashi A.F. Medeiros C.M. Wrasse R.A. Buriti J.H.A. Sobral D. Gobbi 《Journal of Atmospheric and Solar》2011,73(11-12):1575-1580
During the Conjugate Point Experiment (COPEX) campaign performed at Boa Vista (, dip angle ) from October to December 2002, 15 medium-scale gravity waves in the OHNIR airglow images were observed. Using a Keogram image analysis, we estimate their parameters. Most of the waves propagate to Northwest, indicating that their main sources are Southeast of Boa Vista. Quasi-simultaneous plasma bubble activities in the OI 630 nm images were observed in seven cases. The distances between the bubble depletions have a linear relationship with the wavelengths of the gravity waves observed in the mesosphere, which suggests a direct contribution of the mesospheric medium-scale gravity waves in seeding the equatorial plasma bubbles. 相似文献
3.
《Continental Shelf Research》2007,27(10-11):1447-1464
4.
5.
6.
7.
8.
9.
10.
11.
12.
《Physics of the Earth and Planetary Interiors》2005,148(2-4):131-148
13.
14.
15.
16.
17.
Computation of oceanic vertical stability (Brunt-Väisäläfrequency) with an improved density equation
Wang Dong-Ping 《Earth and Planetary Science Letters》1974,24(1):87-90
Vertical stability of a water column can be computed from the formula: where ρ is density, P is pressure, g is gravity, and c is sound speed.Because Ekman's density equation is not consistent with Wilson's sound speed equation, large errors are introduced by combining these two equations to calculate the vertical stability. However, this difficulty can be overcome with the Wang and Millero density equation derived consistently from Wilson's sound speed equation. In addition to its simplicity, the computation of vertical stability from the above formula using Wilson's sound speed equation and Wand and Millero's density equation can be shown to generally give the most accurate results. 相似文献
18.
19.