Perpendicular and off-perpendicular to B observations of 150-km echoes: evidence of meridional modulation and structure
| Title: | Perpendicular and off-perpendicular to B observations of 150-km echoes: evidence of meridional modulation and structure |
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| Authors: | Chau Chong Shing, Jorge Luis; Woodman Pollitt, Ronald Francisco; Milla, Marco |
| Publisher Information: | Instituto Geofísico del Perú |
| Publication Year: | 2009 |
| Subject Terms: | Interferometry; Ionosphere; Plasma; Radar; http://purl.org/pe-repo/ocde/ford#1.05.01; http://purl.org/pe-repo/ocde/ford#1.05.00 |
| Description: | Póster presentado en: ISEA12, Greta, Grecia, Mayo 18-25, 2008. ; Although discovered more than 40 years ago [Balsley, 1964], there is still no physical mechanism that explains the occurrence of coherent echoes from altitudes around 150 kms (the so called 150-km echoes). East-West oblique beam [Fawcett, 1999] as well as wide beam imaging observations at Jicamarca, indicates that temporal variability of 150-km echoes (the pearls in the necklace) is not due to structuring and/or modulation in the zonal direction. These results point to a meridional modulation [E. Kudeki, personal communication]. Recently Chau [2004] reported the observations of echoes from off-perpendicular to B angles, implying that the aspect sensitivity (i.e., the North-South angular brightness) is not a narrow Gaussian as originally thought… |
| Document Type: | conference object |
| File Description: | application/pdf |
| Language: | English |
| Relation: | http://hdl.handle.net/20.500.12816/3806 |
| Availability: | https://hdl.handle.net/20.500.12816/3806 |
| Rights: | info:eu-repo/semantics/openAccess ; https://creativecommons.org/licences/by/4.0/ |
| Accession Number: | edsbas.892F45B7 |
| Database: | BASE |