Re:Liquid water 'lake' revealed on Mars
by BurningFrog on Wednesday July 25, 2018 @10:21PM
(#17614633)
If I understand the Science article¹ right, this lake is 1.5 km beneath the surface. That's a lot of digging when you can't go buy a new shovel.
Besides the fact it was only discovered right now, that is.
¹ The two-way pulse travel time between the surface and basal echoes can be used to estimate the depth of the subsurface reflector and map the basal topography. Assuming an average signal velocity of 170 m/μs within the SPLD, close to that of water ice (20), the depth of the basal reflector is about 1.5 km below the surface
Besides the fact it was only discovered right now, that is.
¹ The two-way pulse travel time between the surface and basal echoes can be used to estimate the depth of the subsurface reflector and map the basal topography. Assuming an average signal velocity of 170 m/μs within the SPLD, close to that of water ice (20), the depth of the basal reflector is about 1.5 km below the surface