Search Results - "Trivedi, N.B"

Amplitude enhancement of events in the South Atlantic anomaly region by Trivedi, N.B., Abdu, M.A., Pathan, B.M., Dutra, S.L.G., Schuch, N.J., Santos, J.C., Barreto, L.M.

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Geomagnetic phenomena in the South Atlantic anomaly region in Brazil by Trivedi, N.B., Pathan, B.M., Schuch, Nelson J., Barreto, M., Dutra, L.G.

“…The secular variation in the total geomagnetic field F and the westward drift of South Atlantic magnetic anomaly (SAMA) observed in Brazil during the 20th…”
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An experiment to study solar flare effects on radio-communication signals by Contreira, D.B., Rodrigues, F.S., Makita, K., Brum, C.G.M., Gonzalez, W., Trivedi, N.B., da Silva, M.R., Schuch, N.J.

“…The occurrence of radio signal fading events caused by ionospheric absorption plays an important role in the performance of radio-communication systems. It is…”
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Amplitude enhancement of SC ( H ) events in the South Atlantic anomaly region by Trivedi, N.B., Abdu, M.A., Pathan, B.M., Dutra, S.L.G., Schuch, N.J., Santos, J.C., Barreto, L.M.

“…South Atlantic Magnetic Anomaly (SAMA) due to its weak total geomagnetic field F is known to be a sink of trapped charged particles from the inner radiation…”
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CME-geometry and cosmic-ray anisotropy observed by a prototype muon detector network by Munakata, K., Kuwabara, T., Bieber, J.W., Evenson, P., Pyle, R., Yasue, S., Kato, C., Fujii, Z., Duldig, M.L., Humble, J.E., Silva, M.R., Trivedi, N.B., Gonzalez, W.D., Schuch, N.J.

“…We analyze the cosmic-ray anisotropy observed by a prototype network of muon detectors during geomagnetic storms associated with coronal mass ejections (CMEs)…”
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Pc3-4 geomagnetic pulsations at very low latitude in Brazil by Zanandrea, Ademilson, Da Costa, J.M., Dutra, S.L.G., Trivedi, N.B., Kitamura, T., Yumoto, K., Tachihara, H., Shinohara, M., Saotome, O.

“…In order to investigate Pc3-4 geomagnetic pulsations at very low and equatorial latitudes, L=1.0 to 1.2, we analyzed simultaneous geomagnetic data from…”
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Cosmic Ray Muon Observation at Southern Space Observatory—SSO (29°S, 53°W) by Silva, Da, Contreira, D B, Monteiro, S, Trivedi, N B, Munakata, K, Kuwabara, T, Schuch, N J

“…Issue Title: Proceedings of the Eleventh United Nations / European Space Agency Workshop, held in Córdoba, Argentina, 09 - 13 September 2002 Under an agreement…”
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2-D geoelectrical model for the Parnaı́ba Basin conductivity anomaly of northeast Brazil and tectonic implications by Arora, B.R, Padilha, A.L, Vitorello, Í, Trivedi, N.B, Fontes, S.L, Rigoti, A, Chamalaun, F.H

“…A magnetometer array study in the north-northeast of Brazil has revealed a roughly NE–SW-trending conductive structure in the southeastern part of the…”
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Characteristics of the Equatorial Electrojet determined from an array of magnetometers in N-NE Brazil by RIGOTI, A, CHAMALAUN, F. H, TRIVEDI, N. B, PADILHA, A. L

“…An array of 29 vector magnetometers was operated in N-NE Brazil from November 1990 until March 1991. We present the analysis of 16 selected quiet days, for…”
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Geomagnetic field investigation on the polar microsatellite SACI-1 by Trivedi, N.B, Russell, C.T, Barbosa, Maria J.F, Dutra, S.L.G, Teixeira, Nelson R, Means, J.D, Neri, J.A

“…The first Brazilian Scientific Microsatellite, SACI-1, is scheduled to be launched in July 1999 in a near circular polar orbit at an inclination of 98.5° and…”
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Global scale Earth's upper atmosphere monitoring by SACI-1 micro-satellite by Takahashi, H., Neri, J.A., Abdu, M.A., Muralikrishna, P., Jayanthi, U.B., Trivedi, N.B., Sobral, J.H.A., Okano, S., Shepherd, G., Sargoytchev, S., Oyama, K-I, Russell, C.T.

“…The first Brazilian scientific micro-satellite, SACI-1, is scheduled to be launched in the 2nd semester of 1999. It will be placed in a sun-synchronous polar…”
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Amplitude modulation of the equatorial electrojet (EEJ) during a magnetospheric storm by Saka, O., Kitamura, T., Tachihara, H., Shinohara, M., Trivedi, N.B., Reeves, G.D., Hansen, T.L.

“…An encounter of the Earth with a high velocity solar wind stream triggered the magnetic storm of 29 January 1995. The storm lasted for the following seven…”
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X-ray observations in the SAA—Pulsations in electron precipitation accompanied by Pc4 events by Jayanthi, U.B, Pereira, M.G, Martin, I.M, Trivedi, N.B, Lazutin, L

“…A balloon experiment conducted on December 20, 1994, in the South Atlantic Anomaly (SAA) region, detected events with increases in x-ray flux due to electron…”
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Are droughts predictable? by Kane, R.P, Trivedi, N.B

“…From a study of rainfall series at several locations, it is shown that approximate but meaningful predictions of drought-prone intervals are possible only for…”
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Equatorial ionospheric electric fields during magnetospheric disturbances: local time/longitude dependences from recent EITS campaigns by Abdu, M.A., Batista, I.S., Walker, G.O., Sobral, J.H.A., Trivedi, N.B., de Paula, E.R.

“…Data sets collected during a few coordinated Equatorial Ionosphere-Thermosphere System (EITS) observational campaign periods, mainly from the Brazilian and…”
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Enhanced low-energy gamma rays at balloon altitude in the Brazilian magnetic anomaly by MARTIN, I. M, RAI, D. B, PALMEIRA, R. A. R, TRIVEDI, N. B, ABDU, M. A, DA COSTA, J. M

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Enhanced Electron Precipitation in Brazilian Magnetic Anomaly in association with Sudden Commencement by MARTIN, I. M, RAI, D. B, DA COSTA, J. M, PALMEIRA, R, TRIVEDI, N. B

“…Following the first satellite observations of enhanced particle flux in the region of the Brazilian Magnetic Anomaly1,2, various attempts have been made to…”
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