Table 2 Modified near-surface reference model (referred to as model 2). The numbers in brackets mark the full range explored in the inversion (i.e. bounds of the depth-dependent multizonal prior PDF).

From: The shallow structure of Mars at the InSight landing site from inversion of ambient vibrations

 

Thickness [m]

vP [m/s]

vS [m/s]

Regolith

5 (3−6)

200 (80−300)

111 (40−170)

Blocky ejecta

15 (5−25)

700 (200−2000)

389 (110−1100)

Basalt

150 (100−200)

1500 (500−4000)

833 (280−2220)

Sediments

—

750 (500−1500)

417 (280−840)

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