Cours 3: Gravimétrie
Cours 3: Gravimétrie
Cours 3: Gravimétrie
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Mars Gravity<br />
● Tharsis<br />
● Large freeair anomaly indicates it is<br />
uncompensated<br />
● But it’s too big and old to last like this<br />
● Mantle plume provides dynamic<br />
compensation?<br />
● Utopia<br />
● Probably compensated initially<br />
● Filled later when lithosphere was thicker<br />
● Crustal thickness<br />
● Assume Bouguer anomalies caused by<br />
thickness variations in a constant density<br />
crust<br />
● Need to choose a mean crustal thickness<br />
● Isidis basin sets a lower limit<br />
Free Air<br />
Zuber et al., 2000
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