The European Space Agency
Mars Express: MARSIS

The MARSIS Subsurface Sounding Radar/Altimeter primary objective is to map the distribution of water and ice in the upper portions of the Martian crust. The instrument analyzes reflections of radio waves in the upper 2-3 km of Martian crust to reveal the subsurface structure. The MARSIS Principal Investigator is Prof. Giovanni Picardi, (Roberto Orosei, acting), Universita di Roma 'La Sapienza', Rome, Italy.

The primary source for MARSIS data is the ESA Planetary Science Archive.

Through a cooperative agreement between ESA and NASA, the PDS Geosciences Node is hosting a copy of the MARSIS data archive.

• MARSIS Experiment Data Record (raw data)
  • Nominal Mission
  • Extended Mission 1
• MARSIS Subsurface Reduced Data
• MARSIS Active Ionospheric Sounder data
  • Nominal Mission
  • Extended Mission 1
  • Extended Mission 2
  • Extended Mission 3
  • Extended Mission 4
  • Extended Mission 5    
• MARSIS Total Electron Content of the Ionosphere
  • Nominal Mission
  • Extended Mission 1
• MARSIS AIS Electron Plasma Density and Magnetic Field Magnitude
  • Nominal Mission
  • Extended Mission 4
  • Extended Mission 5

More information about MARSIS is on the ESA web site.

Online Tools

Mars Orbital Data Explorer - Provides search, display, and download  tools for this data set.

Sept. 26, 2016. New Extended Mission 5 AIS data have been released, with coverage through March 30, 2016.

Sept. 6, 2016. New Extended Mission 5 AIS data have been released, with coverage through Dec. 30, 2015.

July 13, 2016. New Extended Mission 5 AIS data have been released, with coverage through May 22, 2015.

May 26, 2016. Three new MARSIS data sets have been added: AIS data for Extended Mission 5 through March 29, 2015, and Electron Plasma Density and Magnetic Field Magnitude data for Extended Missions 4 and 5 with coverage from January 1, 2013 through May 14, 2015.

April 12, 2016. A new MARSIS AIS data set has been released, the Electron Plasma Density and Magnetic Field Magnitude data. This release covers the period June 22, 2005 through January 3, 2006.

February 12, 2016. New Extended Mission 4 AIS RDR data are now online, with data coverage through January 3, 2015.

June 17, 2015. New Extended Mission 4 AIS RDR data are now online, with data coverage through Oct. 2, 2014.

April 29, 2015. New Extended Mission 4 AIS RDR data are now online, with data coverage through May 31, 2014.

March 4, 2015. New Extended Mission 4 AIS RDR data are now online, with data coverage through January 1, 2014.

September 17, 2014. New Extended Mission 4 AIS RDR data are now online, with data coverage through October 3, 2013.

March 17, 2014. The first release of Extended Mission 4 AIS RDR data are now online, with data coverage through June 2013.

November 6, 2013. New data have been added to the Extended Mission 3 AIS RDR data set, with coverage through 31 December 2012.

September 11, 2013. New data have been added to the Extended Mission 3 AIS RDR data set, with coverage through 30 September 2012.

May 10, 2013. New data have been added to the Extended Mission 3 AIS RDR data set, with coverage through 30 June 2012.

June 21, 2012. New data have been added to the Extended Mission 3 AIS RDR data set, with coverage through 30 Sep 2011.

March 8, 2012. New data have been added to the Extended Mission 3 AIS RDR data set, with coverage through 30 June 2011.

September 27, 2011. The first release of Extended Mission 3 AIS RDR data are now online, including data coverage through 2 July 2010.

September 13, 2011. All Extended Mission 2 Active Ionospheric Sounder RDR data have been revised again, and new data have been added. The data set now extends through 31 Dec 2009.

May 31, 2011. All Extended Mission 2 Active Ionospheric Sounder RDR data have been revised. The data set extends through 29 Dec 2008 (orbit 6410).

April 21, 2011. Extended Mission 2 Active Ionospheric Sounder RDR data through 29 Dec 2008 (orbit 6410) have been added.

November 30, 2010. Extended Mission 2 Active Ionospheric Sounder RDR data through 2 Jan 2008 (orbit 5139) have been added.

September 20, 2010. Extended mission Ionospheric Sounder RDR data through 5 Aug 2007 (orbit 4598) have been added.