Por |
Chau Chong Shing, Jorge Luis; Woodman Pollitt, Ronald Francisco; Milla, Marco
(Instituto Geofísico del Perú, 2009)
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, ...