Contract no. 81-021/18.09.2007,

S tage IV. High Speed Streams Importance Parameter (I) and Geomagnetic Field

Deadline: 10.12.2009

- Activity IV.1. – Correlation between I Parameter of the Rapid Streams in Solar Wind and some Geomagnetic Parameters (ISS)

We calculated the importance parameters (I) of the High Speed Streams with monthly resolution using the different catalogs which cover four solar cycles (SC 20-23). Then we calculated the correlation between importance parameter I and geomagnetic Aa and Ap indices and the corresponding regression lines for each 11-yr solar cycle as well as for the whole interval, 1964-2007.

- Activity IV.2 – Undecenal Variation of Geomagnetic Data on the Romanian Territory (IGAR)

The analysis of the undecenal variation of the geomagnetic data registered on the Romanian territory was done for the measurements made in Surlari station and some other stations of the national network. The secular variation was extracted from the data series using three different methods.

- Activity IV.3 - Dissemination of the results: papers at local and international scientific meetings; publications. (ISS+IGAR)

IV. 3. 1. International scientific meetings:

- Third International Symposium on Space Climate, Saariselka, Finland, 14-23 March 2009:

- C. Demetrescu, V. Dobrica, G. Maris, On the long-term variability of the heliosphere-magnetosphere environment;

- V. Dobrica, C. Demetrescu, G. Maris, On the response of the European climate to the solar/geomagnetic long-term activity;

• STEREO-3/SOHO-22 Workshop: Three Eyes on the Sun - Multi-spacecraft studies of the corona and impacts on the heliosphere, Dorset, Anglia, 27 April – 1 May, 2009:

- M. Mierla , B. Inhester, A. Antunes, On the 3D Reconstruction of Coronal Mass Ejections using Coronagraph Data (invited paper), accepted for publication in Annales Geophysicae;

• Solar Wind 12, Saint-Malo, Franta, 26-29 June 2009:

- L. Rodriguez, A. N. Zhukov, M. West, E. Kilpua, M. Mierla, Origin and evolution of interplanetary CMEs observed by STEREO;

• “Solar Influences on the terrestrial magnetosphere and ionosphere”, Sozopol, Bulgaria, 9-13 July 2009:

- G. Maris, Periodicities of the Solar Wind and its Fast Streams;

• XXVIIth IAU General Assembly, IAU Symposium 264 “Solar and Stellar Variability Impact on Earth and Planets”, Rio de Janeiro, Brazilia, 3 -7 August 2009:

- G. Maris, O. Maris, Rapid Solar Wind and Geomagnetic Variability during the Ascending Phases of the 11-yr Solar Cycles, accepttd for publication in SOLAR AND STELAR VARIABILITY: IMPACT ON EARTH AND PLANETS, Proc. of the 264 th IAU Symposium, A.G. Kosovichev, A.H. Andrei and J.-P. Rozelot eds., Cambridge Univ. Press;

• XXVIIth IAU General Assembly, Joint Discussion 16 “IHY Global Campaign Whole Heliosphere Interval ”, 11-14 August 2009

- G. Maris, O. Maris, WHI High-Speed Streams at Geospace (invited paper), accepted for publication in Highlights of Astronomy , Volume 15, J.F. Corbett ed., Cambridge Univ. Press;

• XIth IAGA General Assembly, Sopron, Ungaria, 22-31 August 2009:

- C. Demetrescu, V. Dobrica, An induction-based magnetic model of the European lithospher;

- C. Demetrescu, V. Dobrica, G. Maris, Signature of Hale and Gleissberg solar cycles in the heliosphere-magnetosphere environment; Dynamics of the high speed streams during the last four solar minima;

• IHY-ISWI Regional Meeting, Heliophysical phenomena and Earth environment, 7-13 September 2009, Šibenik, Croatia:

- G. Maris , O. Maris, Dynamics of the high speed streams during the last four solar minima;

• UN/NASA/ESA/JAXA Workshop on Basic Space Science and the International Heliophysical Year, 21-25 September, 2009, Dajeon, Korea

- G. Maris, O. Maris, High Speed Stream during SC 23 – A Romanian Contribution to IHY;

• “ Sixth European Space Weather Week”, 16-21 November, 2009, Bruges, Belgium

- O. Maris, G. Maris, Fast Solar Wind Features during the Last Prolonged Minimum;

IV. 3. 2. Publications:

- Mierla, M., Inhester, B., Marque, C., Rodriguez, L., Gissot, S., Zhukov, A., Berghmans, D.and Davila, J., On 3D Reconstruction of Coronal Mass Ejections: I Method description and application to SECCHI-COR Data , Sol. Phys. 259, 123, 2009;

- I. Chifu, M. Mierla, L. Rodriguez, Statistical study of halo CMEs and their influence on the Earth magnetic field, Journal of Atmospheric and Solar-Terrestrial Physics (revision process).