Mars InSight Events

Where multiple origins are present for an event, each is listed independently.

Preferred origins are highlighted.

Events belonging to the Low and High frequency families are labelled following the convention S[xxxx][z]; where [xxxx] indicates the InSight mission sol the event begins on (starting from sol 0, the sol InSight landed on Mars), and [z] is a letter that ensures unique names if multiple events occur on a single Sol.

SF events are assigned the prefix letter T instead of S in order to clearly separate them from other events: T[xxxx][z].

Events that are confirmed meteorite impacts include a marker: M

• LOW FREQUENCY (LF)

  energy in 3 components all below 2.4Hz

• BROADBAND (BB)

  energy in 3 components predominantly below 2.4Hz though also includes excitement at possibly above 2.4Hz

• HIGH FREQUENCY (HF)

  energy in 3 components predominantly at 2.4Hz and above.
  ‘Predominantly’ indicates some leakage of energy below 2.4Hz is possible

• 2.4Hz

  energy in 3 components centered around 2.4Hz resonance, with very limited excitation above of below.
  (It is likely these are small amplitude HF events.)

• VERY HIGH FREQUENCY (VF)

  special case of high frequency events that show clear differences in energy between vertical and horizontal components. Horizontal energy is significantly larger than vertical energy at higher frequencies.

• SUPER HIGH FREQUENCY (SF)

  very short duration high frequency events that do not include energy at 2.4Hz or below. Energy is typically between 8-15Hz, and horizontal energy is significantly larger than vertical energy.

Where uncertainties are given in the source data, they are shown next to the value:

18.9 +12.3 -8.5

This indicates a value of 18.9, with a lower uncertainty of 8.5 and an upper uncertainty of 12.3 (eg. between 10.4 and 31.2)

• A - High Quality

  Multiple clear and identifiable phases / clear polarisation (implies possibility both distance and back azimuth are determined, and hence location

• B - Medium Quality

  Multiple clear and identifiable phases but no polarisation (implies possibility of distance but no location) OR polarisation, but not enough clear phase picks for a distance estimate

• C - Low Quality

  Signal is clearly observed but phase picking is challenging:
  • (HF/2.4Hz/VF) Pg and Sg pickable, but speculative OR large uncertainty OR low SNR
  • (LF/BB) no clear phases can be identified OR only a single phase is clearly identifiable OR multiple phases are identifiable, but no clear picks can be attributed to P and S phases
  • (SF) peak signal amplitude of data with 7.9Hz filter is above 2x10-9m/s

• D - Suspicious

  • Signal only weakly observed OR
  • Signal is likely not attributable to a seismic event OR
  • (HF/2.4/VF) impossible to pick both Pg and Sg OR
  • (SF) peak signal amplitude of data with 7.9Hz filter is below 2x10-9m/s

• MW

  Scale using spectral fitting. Preferred.

• M2.4

  Scale using 2.4Hz resonance amplitudes

• MbP

  Scale using P body phase amplitudes

• MbS

  Scale using S body phase amplitudes.