Results 21 to 30 of about 296,267 (293)

Gravity Wave Investigations over Comandante Ferraz Antarctic Station in 2017: General Characteristics, Wind Filtering and Case Study

open access: yesAtmosphere, 2020
This work presents the characteristics of gravity waves observed over Comandante Ferraz Antarctic Station (EACF: 62.1° S, 58.4° W). A total of 122 gravity waves were observed in 34 nights from March to October 2017, and their parameters were obtained by ...
Gabriel Augusto Giongo   +6 more
doaj   +1 more source

Satellite observations of middle atmosphere gravity wave absolute momentum flux and of its vertical gradient during recent stratospheric warmings [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
Sudden stratospheric warmings (SSWs) are circulation anomalies in the polar region during winter. They mostly occur in the Northern Hemisphere and affect also surface weather and climate.
M. Ern   +12 more
doaj   +1 more source

Influence of the cloud-level neutral layer on the vertical propagation of topographically generated gravity waves on Venus

open access: yesEarth, Planets and Space, 2019
The reason for stationary gravity waves at Venus’ cloud top to appear mostly at low latitudes in the afternoon is not understood. Since a neutral layer exists in the lower part of the cloud layer, the waves should be affected by the neutral layer before ...
Takeru Yamada   +3 more
doaj   +1 more source

Relationship between ionospheric plasma bubble occurrence and lightning strikes over the Amazon region [PDF]

open access: yesAnnales Geophysicae, 2018
The vertical coupling between the troposphere and the ionosphere presents some remarkable features. Under intense tropospheric convection, gravity waves may be generated, and once they reach the ionosphere, these waves may seed instabilities and ...
J. Sousasantos   +4 more
doaj   +1 more source

Angular Momentum Transport via Internal Gravity Waves in Evolving Stars [PDF]

open access: yes, 2014
Recent asteroseismic advances have allowed for direct measurements of the internal rotation rates of many sub-giant and red giant stars. Unlike the nearly rigidly rotating Sun, these evolved stars contain radiative cores that spin faster than their ...
Brown, Ben   +3 more
core   +2 more sources

On the Separation Period Discriminating Gravity and Infragravity Waves off Gyeongpo Beach, Korea

open access: yesJournal of Marine Science and Engineering, 2020
Although there have been a number of studies investigating fundamental characteristics of infragravity waves in coastal zones, a proper method of deciding period ranges that are associated with gravity or infragravity waves remains uncertain.
Jung-Eun Oh   +3 more
doaj   +1 more source

Upward propagation of gravity waves and ionospheric perturbations triggered by the 2022 Hunga-Tonga volcanic eruption

open access: yesEarth, Planets and Space, 2023
Using an atmosphere–ionosphere coupled model (GAIA), atmospheric and ionospheric perturbations triggered by the 2022 Hunga-Tonga volcanic eruption are studied.
Yasunobu Miyoshi, Hiroyuki Shinagawa
doaj   +1 more source

Energy density and pressure of long wavelength gravitational waves [PDF]

open access: yes, 1999
Inflation leads us to expect a spectrum of gravitational waves (tensor perturbations) extending to wavelengths much bigger than the present observable horizon.
A. Abramovici   +23 more
core   +2 more sources

Gravity wave activities in Tibet observed by COSMIC GPS radio occultation

open access: yesGeodesy and Geodynamics, 2018
The Gravity waves activities in the Tibetan Plateau are very complex with different effects and natures that are not clear due to the lack of high resolution data from space and also from ground. In this paper, using COSMICGPS radio occultation data from
Attaullah Khan, Shuanggen Jin
doaj   +1 more source

Characteristics of equatorial gravity waves derived from mesospheric airglow imaging observations [PDF]

open access: yesAnnales Geophysicae, 2009
We present the characteristics of small-scale (<100 km) gravity waves in the equatorial mesopause region derived from OH airglow imaging observations at Kototabang (100.3° E, 0.2° S), Indonesia, from 2002 to 2005.
S. Suzuki   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy