Study of geoeffective interplanetary structures during intense geomagnetic storms and substorms

• Grant number: 08/06650-9
• Support type: Regular Research Grants
• Duration: November 01, 2008 - October 31, 2010
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal researcher: Walter Demetrio Gonzalez Alarcon
• Grantee: Walter Demetrio Gonzalez Alarcon
• Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil

Abstract

For time intervals with intense geomagnetic activity during solar cycle 23, we are interested to study the geoeffective interplanetary structures that were responsible for the development of intense storms and substorms, as well as the solar wind parameters that mostly characterizeded such interplanetary structures.For this aim, we plan to use satellite obsevations near the magnetosphere through already existing collaboration with several foreign research groups. We will also use interplanetary-magnetosphere interaction models in order to describe the external and internal magnetospheric response to the passage of such interplanetary structures. (AU)

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ECHER, E.; TSURUTANI, B. T.; GONZALEZ, W. D.; KOZYRA, J. U.. High Speed Stream Properties and Related Geomagnetic Activity During the Whole Heliosphere Interval (WHI): 20 March to 16 April 2008. SOLAR PHYSICS, v. 274, n. 1-2, p. 303-320, DEC 2011. (08/06650-9)

ALVES, M. V.; ECHER, E.; GONZALEZ, W. D.. Geoeffectiveness of solar wind interplanetary magnetic structures. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 73, n. 11-12, SI, p. 1380-1384, JUL 2011. (08/06650-9)

ECHER, E.; GONZALEZ, W. D.; TSURUTANI, B. T.. Statistical studies of geomagnetic storms with peak Dst <=-50 nT from 1957 to 2008. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, v. 73, n. 11-12, SI, p. 1454-1459, JUL 2011. (08/06650-9)

ECHER, E.; ZARKA, P.; GONZALEZ, W. D.; MORIOKA, A.; DENIS, L.. Solar wind effects on Jupiter non-Io DAM emissions during Ulysses distant encounter (2003-2004). Astronomy & Astrophysics, v. 519, SEP 2010. (08/06650-9)

TSURUTANI, B. T.; ECHER, E.; GONZALEZ, W. D.. The solar and interplanetary causes of the recent minimum in geomagnetic activity (MGA23): a combination of midlatitude small coronal holes, low IMF B-Z variances, low solar wind speeds and low solar magnetic fields. Annales Geophysicae, v. 29, n. 5, p. 839-849, 2011. (08/06650-9)

GONZALEZ, WALTER D.; ECHER, EZEQUIEL; TSURUTANI, BRUCE T.; CLUA DE GONZALEZ, ALICIA L.; DAL LAGO, ALISSON. Interplanetary Origin of Intense, Superintense and Extreme Geomagnetic Storms. SPACE SCIENCE REVIEWS, v. 158, n. 1, p. 69-89, 2011. (08/06650-9)