Figure 3.

Scaling law relationship between crater radius and the momentum imparted into the target for exciting seismic energy during an impact. A) Comparison of the results for the Eq. 7 scaling law for 6.5 km/s (solid line) and 11.5 km/s (broken lines) for bolide velocity. Material types are regolith (red), cohesive sediments (yellow), and bedrock (black). Crater diameters are derived from Supplemental Table 1 in (Daubar et al., 2019). Gray shading indicates range of scaling used by (Teanby & Wookey, 2011) for Mars, and circles are from lunar impact craters (Whitaker, 1972), cyan, corrected for martian gravity, and (Plescia et al., 2016), blue. B) Histograms of the bolide momentum obtained from using martian impact velocities (6.5, 11.5 km/s) and relevant material properties (see text) for Eq. 7, and the individual diameters measured in the (Daubar et al., 2019)crater database. Colors are the same as in part A. C) Histogram of source duration τ obtained using Eq. 2 to scale impact momentums of individual craters in our database. Colors are the same as in part A. All data used to create this figure are available Supplemental Table 1.