STORM - Solar system plasma Turbulence:  Observations, inteRmittency and Multifractals

Analysis results

The FP7 project STORM targets data from solar system missions equipped with plasma and electromagnetic field instruments, including magnetometers, electron and ion spectrometers, wave analysers. The STORM "core" missions are:  Ulysses - the European solar wind explorer, Cluster - a state of the art multi-point European mission in the Earth's magnetosphere and Venus Express - the European mission to Venus. The latter two missions also contribute observations of the solar wind.

A full package of analysis methods, as described here, was applied on magnetic field data and, when available, plasma data. We computed the Power Spectral Densities (PSD), the Probability Distribution Functions (PDFs) and the multifractal spectra based on partition function and rank ordered fluctuations. The results of the analyses are cathegorized and organized in databases and catalogues according to the time interval, type of analysis and targeted system. We focus on three time intervals, two at solar minimum and one at solar maximum. We target two solar system plasma systems: (1) the solar wind and (2) the planetary plasma (including the geomagnetic field fluctuations).

You can find below a description of the databases and catalogues created by the FP7 project STORM. We are ready to share these scientific results with members of the space plasma community; the databases and catalogues can be downloaded freely by users registered on this site. Registration is simple, just send an email to marius.echim @ oma.be and give a brief description of the reason why you need access to these results.

D1MAXSW (1999-2001) - a database of spectral power, probability density and multifractal analysis of solar wind data at solar maximum

 This database provides results of solar wind data analysis from Ulysses (1999-2001) and Cluster (2000-2001) and includes three catalogues of analyzed data as shown below:

  1. D1MAXSW_1999_2001_PSD - A catalogue of spectral analysis of solar wind data from Ulysses and Cluster between 1999 and 2001; it includes 510 PSD spectra (295 spectra from Ulysses, 215 spectra from Cluster).
  2. D1MAXSW_1999_2001_PDF - A catalogue of Probability distribution functions computed for magnetic fluctuations recorded  in the solar wind by Ulysses and Cluster between 1999 and 2001; it includes 546 PDFs (340 from Ulysses, 206 from Cluster).
  3. D1MAXSW_1999_2001_Multifractals - A catalogue of multifractal spectra (computed with Partition Function and Rank Ordered methods) of magnetic fluctuations recorded in the solar wind by Ulysses and Cluster between 1999 and 2001. It includes 289 multifractal partition function spectra (151 spectra for fast SW, 138 spectra for slow SW) and 240 ROMA spectra (43 spectra for fast SW, 197 spectra for slow SW).

Read more: D1MAXSW (1999-2001) - a database of spectral power, probability density and multifractal analysis...

D2MAXMSPH (2001-2002) - a database of spectral power, probability density and multifractal analysis of terrestrial magnetosheath and geomagnetic field data at solar maximum

 This database provides results of the analysis of magnetosheath data (from Cluster between 2000 and 2001) and geomagnetic field data (for geomagnetic indices AE, AL, Am, ASYD, AU, Dcm, SYMD, SYMH, and individual magnetic observatories from Finland - Sodankyl√§, Nurmij√§rvi, Belsk). It includes three catalogues, one for each type of data analysis, as shown below:

  1. D2MAXMSPH_2001_2002_PSD - A catalogue of spectral analysis of magnetosheath  data from Cluster and geomagnetic data between 2001 and 2002; it includes 813 PSD spectra of which 381 spectra from Cluster data and 432 spectra for geomagnetic indices and ground-based records.
  2. D2MAXMSPH_2001_2002_PDF - A catalogue of Probability distribution functions (PDFs) computed for magnetosheath data from Cluster and geomagnetic indices and observations between 2001 and 2002; it includes a total number of 2273 PDFs of which 1985 are computed for Cluster data and 276 for geomagnetic indices and ground-based observations.
  3. D2MAXMSPH_2001_2002_Multifractals - A catalogue of multifractal spectra (computed with Partition Function and Rank Ordered methods) for magnetosheath data from Cluster and geomagnetic indices and observations between 2001 and 2002. The catalogue includes 5585 multifractal spectra of which 5345 spectra are computed for Cluster data (856 spectra are computed with partition function and 4479 with rank order approach, respectively).  240 multifractal spectra are computed for geomagnetic indices and ground-based observations.

Read more: D2MAXMSPH (2001-2002) - a database of spectral power, probability density and multifractal...

D3MINSW (2007-2008) - a database of spectral power, probability density and multifractal analysis of solar wind data at solar minimum

 This database provides results of solar wind data analysis from Ulysses (2007-2008),  Cluster (2007-2008) and Venus Express (2007-2008); it includes three catalogues organized as a function of analysis method, as shown below:

  1. D3MINSW_2007_2008_PSD - A catalogue of spectral analysis of solar wind data from Ulysses,  Cluster and Venus Express between 2007 and 2008; it includes 1765 PSD spectra (448 spectra for fast solar wind, 1317 spectra for slow wind).
  2. D3MINSW_2007_2008_PDF - A catalogue of Probability distribution functions computed for magnetic fluctuations recorded  in the solar wind by Ulysses, Cluster and Venus Express between 2007 and 2008; it includes 2736 PDFs (1203 for fast solar wind, 1533 for slow wind).
  3. D3MINSW_2007_2008_Multifractals - A catalogue of multifractal spectra (computed with Partition Function and Rank Ordered methods) of magnetic fluctuations recorded in the solar wind by Ulysses, Cluster and Venus Express between 2007 and 2008. This catalogue includes an overall number of 3007 multifractal spectra of which 821 spectra are computed for fast solar wind (643 spectra are derived with partition function and 372 spectra are derived with rank ordered approach, respectively). Of the 2186 multifractal spectra computed for slow wind, 1618 are obtained with partition function and 716 with rank ordered approach.

Read more: D3MINSW (2007-2008) - a database of spectral power, probability density and multifractal analysis...

D4MINMSPH (2007-2008) - a database of spectral power, probability density and multifractal analysis of planetary plasma and geomagnetic data at solar minimum

 This database provides results of planetary plasma data analysis from Cluster (2007-2008) and Venus Express (2007-2008); it also includes an analysis of geomagnetic field fluctuations for the same time interval. The database includes three catalogues, one for each type of analysis, organized as shown below:

  1. D4MINMSPH_2007_2008_PSD - A catalogue of spectral analysis of magnetospheric (mainly magnetosheath from Cluster and Venus Express) and geomagnetivc data between 2007 and 2008; it includes 870 PSD spectra (337 from Cluster data, 396 from geomagnetic field data, 101 spectra from Venus Express data).
  2. D4MINMSPH_2007_2008_PDF - A catalogue of Probability distribution functions (PDFs) computed for magnetic fluctuations recorded  in the planetary plasma (mainly magnetosheath) by Cluster and Venus Express and a few events from Cassini, between 2007 and 2008; it includes 3921 PDFs of which 1685 from Cluster data, 274 for geomagnetic field data, 1930 from Venus Express data, 15 PDFs from Cassini.
  3. D4MINMSPH_2007_2008_Multifractals - A catalogue of multifractal spectra (computed with Partition Function and Rank Ordered methods) of magnetic fluctuations recorded in the planetary magnetosheath by Cluster and Venus Express between 2007 and 2008; it also includes a multifractal analysis of geomagnetic field fluctuations within the same time period. The catalogue includes 6752 multifractal spectra, of which 316 Partition Function spectra and 2616 ROMA spectra for terrestrial magnetosphere, 1544 Partition Function spectra and 2334 ROMA spectra for Venus magnetosheath, and 120 Partition Function spectra and 120 ROMA spectra for geomagnetic indices.

Read more: D4MINMSPH (2007-2008) - a database of spectral power, probability density and multifractal...

D5MINSW (1997-1998) - a database of spectral power, probability density and multifractal analysis of solar wind data at solar minimum

 

 This database provides results of solar wind data analysis from Ulysses (1997-1998); it includes three catalogues organized as a function of analysis method, as shown below:

  1. D5MINSW_1997_1998_PSD - A catalogue of spectral analysis of solar wind data from Ulysses 1997 and 1998; it includes 136  PSD spectra (61 spectra for fast solar wind, 75  spectra for slow wind).
  2. D5MINSW_1997_1998_PDF - A catalogue of Probability distribution functions computed for magnetic fluctuations recorded  in the solar wind by Ulysses between 1997 and 1998; it includes 90 PDFs (6 for fast solar wind, 84 for slow wind).
  3. D5MINSW_1997_1998_Multifractals - A catalogue of multifractal spectra (computed with Partition Function and Rank Ordered methods) of magnetic fluctuations recorded in the solar wind by Ulysses between 1997 and 1998. This catalogue includes an overall number of 99 multifractal spectra of which 33  spectra are computed for fast solar wind (21 spectra are derived with partition function and 12 spectra are derived with rank ordered approach, respectively). Of the 65 multifractal spectra computed for slow wind, 41 are obtained with partition function and 24  with rank ordered approach.

Read more: D5MINSW (1997-1998) - a database of spectral power, probability density and multifractal analysis...