The IACG 1st Campaign Begins

Volume 12, Number 1, March 1996
by James Green

The Inter-Agency Consultative Group (IACG) has officially begun a multispacecraft, multiagency coordinated science campaign to study magnetotail energy flow and non-linear dynamics. This campaign has been referred to as the IACG 1st Campaign since it is the first in a series of campaigns defined in 1992.

The 1st Campaign is subdivided into two phases: 1. the Structure of the Global Magnetotail System, especially during quiet periods; and 2. Magnetotail Effects of the Global Solar Wind-Magnetosphere interaction, especially during active periods. The science objectives of the 1st Campaign will address various aspects of boundary region structures, quiescent configurations of the magnetosphere and tail systems, and the origin of plasma in the plasma sheet.

The IACG core missions involved in the 1st Campaign are the GEOTAIL (Institute of Space and Aeronautical Science [ISAS]), WIND (NASA), Interball-Tail, (the Space Research Institute of the Russian Academy of Sciences [IKI]), Interball-Auroral (IKI), and POLAR (NASA) spacecraft. At the present time only the first three of these are on orbit. However, it is clear that many of the scientific objectives defined above can be met using these spacecraft in conjunction with, for example, the Interplanetary Monitoring Platform (IMP) 8, the Geostationary Operational Environmental Satellite (GOES) 6 and 7, the Los Alamos National Laboratory equatorial spacecraft, and a variety of ground-based radar and other instruments.

At the IACG meeting in Sapporo, Japan, on September 6, 1995, a number of time intervals were selected in 1995 and 1996 for the first phase of the 1st Campaign. These intervals are as follows: October 18-21, 1995; October 26-27, 1995; October 31-November 1, 1995; November 11-12, 1995; November 17, 1995; November 27-30, 1995; December 3-4, 1995; December 7, 1995; December 15, 1995; December 18-20, 1995; and January 12, 1996. These 1st Campaign intervals are all based on having a solar wind monitor (WIND or IMP 8) with GEOTAIL and Interball-Tail near their apogees in the mid-tail or boundary layer regions.

A major mechanism for disseminating information about the IACG campaigns is the World Wide Web (WWW). The URL is The pages for the 1st Campaign are presently undergoing reconstruction and expansion; however, they include the following:

For questions about becoming part of the IACG 1st Campaign, please contact James L. Green at

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Author:Miranda Beall
Curators: Erin Gardner and Miranda Beall
Responsible Official: Dr. Joseph H. King, Code 633
Last Revised: 21 Nov 1996 [EDG]