Lunar effects in the counter electrojet near the magnetic equator

Journal Article · Tue Jan 01 04:00:00 EST 1974 · J. Atmos. Terrest. Phys., v. 36, no. 1, pp. 167-170

DOI:https://doi.org/10.1016/0021-9169(74)90074-9· OSTI ID:4359130

Rastogi, R G

The examination of H magnetograms of Huancayo for the period, 1948 to 1971, has shown that the negative effects on the daily variation of H occur primarily in the morning hours around 07 hr and in the evening between 15 and 17 hr. The occurrence of the evening event is maximum around lunar ages 1.4 and 13.4 hr or around lunar times 2.2 and 14.2 hr. The occurrence of the morning events is maximum around lunar ages 4.8 and l6.8 hr or around lunar times 2.3 and 14.3 hr. These lunar times correspond to that of maximum negative effect in H due to lunar tidal wave. These counter electrojet effects are suggested to be due to the superposition of lunar semi-diurnal wave over the solar daily wave of H. The late appearance of sporadic-E in the morning or the earlier disappearance of E/sub s/ in the evening is due to these counter electrojet events, when the ionospheric currents over the equatorial regions are reversed to westward direction during the daylight hours. (auth)

• Research Organization: Physical Research Lab., Ahmedabad, India
• NSA Number: NSA-29-013701
• OSTI ID: 4359130
• Journal Information: J. Atmos. Terrest. Phys., v. 36, no. 1, pp. 167-170, Journal Name: J. Atmos. Terrest. Phys., v. 36, no. 1, pp. 167-170; ISSN JATPA
• Country of Publication: United Kingdom
• Language: English

Related Subjects

*ELECTROJETS-- DAILY VARIATIONS
*SPORADIC E-- ELECTROJETS
GEOMAGNETIC EQUATOR
GEOMAGNETIC FIELD
MOON
N58100* --Physics (Atmospheric)--Auroral & Ionospheric Phenomena
SUN