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Worldwide geomagnetic data, GIC indices and alert: INTERMAGNET observatories
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.. contents:: Table of contents

The INTERMAGNET programme exists to establish a global network of cooperating digital magnetic observatories, adopting modern standard specifications for measuring and recording equipment, in order to facilitate data exchanges and the production of geomagnetic products in close to real time. From the INTERMAGNET website it is possible to download 1-minute averages (in daily files) of vector components in either (H, D, Z) or (X, Y, Z) reference frame from world wide magnetic observatories. For this reason, it is not possible to exhaustively fill this form. For instance, the time window of data availability changes from observatory to observatory as well as the tern provided (either (H, D, Z) or (X, Y, Z)) . Data from INTERMAGNET will be used only for the limited number of events that will be selected, so that a manual selection of the observatories and of the time period will be made. Data can be downloaded as .gz files from an ftp (ftp://ftp.seismo.nrcan.gc.ca/intermagnet/). Each file contains 1 day of 1-minute magnetic data for a single INTERMAGNET observatory

References
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Dataset summary
~~~~~~~~~~~~~~~

.. list-table::

  * - **internal_name:**
    - ingv_mag_int_timeseries
  * - **publisher:**
    - INTERMAGNET
  * - **alph_code:**
    - 9A
  * - **id_tmp:**
    - 21
  * - **short_name:**
    - INGV_INT_mag
  * - **identifier:**
    - aspis:///ingv/INGV_INT_mag
  * - **dynamic:**
    - This peculialiar version is static being data related only to the 6 CAESAR target events, otherwise it is expected to grow.
  * - **size:**
    - 120MB
  * - **format:**
    - csv
  * - **type:**
    - timeseries
  * - **records_number:**
    - 1274399
  * - **time_start:**
    - 2012-03-07
  * - **time_stop:**
    - 2017-09-15
  * - **spatial:**
    - GROUND
  * - **messenger:**
    - 
  * - **spectral_min:**
    - 1
  * - **spectral_max:**
    - 1
  * - **spectral_units:**
    - 1/minute
  * - **observable:**
    - GIC,GEOINDEX
  * - **latest update:**
    - 2024-03-28 05:08:12

Columns specification
~~~~~~~~~~~~~~~~~~~~~

.. list-table:: 
   :widths: 7 20 15 10 48
   :align: right 
   :header-rows: 1

   * - progr
     - column
     - units
     - type
     - description
   * - 1
     - time
     - UTC
     - datetime
     - no description
   * - 2
     - IAGA_code
     - dimensionless
     - string
     - IAGA identifier of the observatory
   * - 3
     - Geo_Lat
     - deg
     - float
     - Geographic Latitude °
   * - 4
     - Geo_Lon
     - deg
     - float
     - Geographic Longitude °
   * - 5
     - Altitude
     - m
     - float
     - m
   * - 6
     - X
     - nT
     - float
     - nT (X component in NEC frame)
   * - 7
     - Y
     - nT
     - float
     - nT (Y component in NEC frame)
   * - 8
     - Z
     - nT
     - float
     - nT (Z component in NEC frame)
   * - 9
     - F
     - nT
     - float
     - nT total intensity
   * - 10
     - GICx
     - dimensionless
     - float
     - no description
   * - 11
     - GICy
     - dimensionless
     - float
     - no description
   * - 12
     - AlertX
     - dimensionless
     - integer
     - Alert based on GicX index
   * - 13
     - AlertY
     - dimensionless
     - integer
     - Alert based on GicY index
