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The SEGMA array: current status M. Vellante Physics Department, University of L’Aquila, Italy

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The SEGMA array: current status M. Vellante Physics Department, University of L’Aquila, Italy. ULTIMA Meeting Tsukuba, Japan 14 November 2008. 1. SEGMA: South Europe GeoMagnetic Array. Cooperating institutions: University of L’Aquila, Italy

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The SEGMA array: current status

M. Vellante

Physics Department, University of L’Aquila, Italy

ULTIMA Meeting

Tsukuba, Japan

14 November 2008

1

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SEGMA: South Europe GeoMagnetic Array
  • Cooperating institutions:
  • University of L’Aquila, Italy
  • Space Research Institute (IWF), Graz, Austria
  • Geodetic and Geophysical Research Institute, Sopron, Hungary
  • Geophysical Institute, Sofia, Bulgaria

2

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NCK

CST

RNC

PAG

AQU

Map of the recording stations of the SEGMA array

3

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Main features of the fluxgate instrument and data acquisition:
  • 0.01 nT resolution
  • Max. data rate 64 vectors/sec
  • Standard final sampling rate: 1Hz
  • Absolute time via GPS receiver
  • Check operations and data recovery made frequently at AQU, NCK and PAG. Once every 1-2 months at CST and RNC.

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From the WEB site of SEGMA (http://sole-terra.aquila.infn.it/staz_segma.asp?lang=en)

it is possible to get:

- user defined magnetograms:

- cross-phase spectra (daily and monthly vision):

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Scientific objectives
  • General purpose:
  • Investigation of the dynamical features of the solar wind – magnetosphere interaction.
  • Ground support to space missions.
  • Specific objectives:
  • Understanding of generation mechanisms of ULF waves in the magnetosphere,
  • relation with solar wind conditions.
  • Understanding of propagation characteristics of ULF waves,
  • transformation they undergo in the magnetosphere (resonances) and
  • in the transmission through the ionosphere.
  • Study of connection between Pi2 pulsations and geomagnetic substorms.
  • Monitoring of plasma mass density in the plasmasphere and ionosphere by means of
  • detection of field line resonances.

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