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Mostrando 10 de un total de 42 resultados de la comunidad: Ciencias del Geoespacio y Astronomía. (0.02 segundos)

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Por | Woodman Pollitt, Ronald Francisco (Instituto Geofísico del Perú, 1976-06-01)

A proposed VHF radar experiment in relation to stratospheric pollution problems

There is no need to stress here the importance of current stratospheric research motivated by possible man-made disturbances of the natural chemical equilibrium state of ozone in the stratosphere. The subject is discussed not only in the technical literature but in newspapers, magazines and television ...
- Stratosphere
- Radar
- Pollution
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Por | Rüster, R.; Woodman Pollitt, Ronald Francisco (Instituto Geofísico del Perú, Radio Observatorio de Jicamarca, 1978)

Digital filtering, calibration and correlation analysis of radar-echoes from the tropo and stratosphere

VHF-radars have been successfully used for remote sensing of the lower and middle atmosphere. The received radar-echoes are digitized and these raw data are processes in several sequential steps. By digitally filtering the raw data which is equivalent to a compression or a coherent integration, the ...
- Radar
- Remote sensing
- Stratosphere
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Por | Chau Chong Shing, Jorge Luis; Goncharenko, L.; Fejer, B.; Liu, H. (Instituto Geofísico del Perú, 2010)

Equatorial and low latitude ionospheric effects due to planetary wave atmospheric forcing

Diapositivas presentadas en First Latin American, FMT Workshop 2010, Ica, Peru, November 22- 26, 2010.
- Ionosphere
- Stratosphere
- Geophysical observatories
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Por | Goncharenko, Larisa P.; Chau Chong Shing, Jorge Luis; Liu, Han-Li (Instituto Geofísico del Perú, 2009)

Perplexing atmosheric connections

Diapositivas presentadas en 2009 Joint Assembly. The Meeting of the Americas. 24-27 May 2009. Toronto, Ontario, Canada.
- Ionosphere
- Stratosphere
- Atmospheric waves
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Por | Goncharenko, L. P.; Coster, A. J.; Rideout, W.; Zhang, S. (Instituto Geofísico del Perú, 2009)

Connections between the stratosphere and ionosphere

Diapositivas presentadas en: CEDAR Workshop 2009 del 28 de junio al 2 de julio de 2009 en Santa Fe, Nuevo México, USA.
- Stratosphere
- Ionosphere
- Geomagnetism
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Por | Goncharenko, L.; Coster, A.; Chau Chong Shing, Jorge Luis; Valladares, C. E. (Instituto Geofísico del Perú, 2011)

Ionospheric effects of recent stratospheric sudden warmings

Recent studies have shown large variations in low-latitude ionospheric parameters occurring after stratospheric sudden warming events. We use observations of vertical ion drift from Jicamarca ISR and GPS total electron content data in the Western Hemisphere for winters of 2008-2009 and 2009-2010 to ...
- Ionosphere
- Ionization
- Stratosphere
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Por | Goncharenko, L.; Coster, A.; Rideout, W.; Chau Chong Shing, Jorge Luis; Liu, H. -L.; Valladares, C. E. (Instituto Geofísico del Perú, 2009)

Ionospheric variations during January 2009 stratospheric sudden warming

The stratospheric sudden warming peaking in January 2009 was the strongest and most prolonged on record. We report significant ionospheric variations is association with this event, which are especially pronounced at low latitudes. Large increase in the vertical drifts is observed at Jicamarca, ...
- Ionosphere
- Seasonal variations
- Stratosphere
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Por | Woodman Pollitt, Ronald Francisco; Chau Chong Shing, Jorge Luis (Instituto Geofísico del Perú, Radio Observatorio de Jicamarca, 2000)

Wide-beam forming using binary phase coding

In imaging work, it is desirable to have the transmitting beam width matched to the receiving one. One possibility to do this at Jicamarca, when single receiving modules are employed, is using one antenna module as the transmitting array (the whole Jicamarca array consists of 8 by 8 modules). However, ...
- Image processing
- Antennas
- Stratosphere
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Por | Chau Chong Shing, Jorge Luis; Fejer, B. G.; Goncharenko, L. P.; González, A. (Instituto Geofísico del Perú, 2010)

The equatorial and low latitude ionosphere during stratospheric sudden waming events

Diapositivas presentadas en Nagoya University, Japan, March 24 2010.
- Ionosphere
- Stratosphere
- Radar
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Por | Chau Chong Shing, Jorge Luis; Goncharenko, Larisa P.; Fejer, Bela G.; Liu, Han L. (Instituto Geofísico del Perú, 2011-08-13)

Equatorial and low latitude ionospheric effects during sudden stratospheric warming events

The sources of ionospheric forcing are from above (solar and magnetospheric forces), internal (chemistry, local neutral dynamics), and from below (lower atmosphere). In this work we review the observed ion-neutral coupling effects at equatorial and low latitudes during large meteorological events ...
- Ionosphere
- Stratosphere
- F region
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