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On cosmic rays, IP structures and geospace consequences during WHI

conference contribution
posted on 2023-05-23, 05:30 authored by Dal Lago, A, Guarnieri, FL, da Silva, MR, Gonzalez, WD, Braga, CR, Schuch, NJ, Munakata, K, Kato, C, Bieber, JW, Kuwabara, K, Tokumara, M, Marcus DuldigMarcus Duldig, John Humble
This work presents some observations during the period of the Whole Heliosphere Interval (WHI) of the effects of interplanetary (IP) structures on the near-Earth space using three sets of observations: magnetic field and plasma from the Advanced Composition Explorer (ACE) satellite, ground-based cosmic ray data from the Global Muon Detection Network (GMDN) and geomagnetic indices (Disturbance storm-time, Dst, and auroral electrojet index, AE). Since WHI was near minimum solar activity, high speed streams and corotating interaction regions (CIRs) were the dominant structures observed in the interplanetary space surrounding Earth. Very pronounced geomagnetic effects are shown to be correlated to CIRs, especially because they can cause the so-called High-Intensity Long-Duration Continuous AE Activity (HILDCAAs) - Tsurutani and Gonzalez (1987). At least a few high speed streams can be identified during the period of WHI. The focus here is to characterize these IP structures and their geospace consequences.

History

Publication title

Proceedings of the 27th International Astronomical Union General Assembly

Volume

15

Editors

D Lago

Pagination

488-490

ISBN

978-1-107-00533-4

Department/School

School of Natural Sciences

Publisher

Cambridge

Place of publication

UK

Event title

27th International Astronomical Union General Assembly

Event Venue

Rio de Janeiro

Date of Event (Start Date)

2009-08-03

Date of Event (End Date)

2009-08-14

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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