|
Size: 1813
Comment:
|
Size: 2135
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 15: | Line 15: |
| || Dipole moment || T-m³ || 7.91e15 || ~0 || 7.91e15 || | || Dipole moment || T-m³ || 7.91e15 || ~0 || 2.25e15 || |
| Line 26: | Line 26: |
The shielding effect of the magnetic field is not due to surface field strength, but the size of the magnetosphere ... which is due to dipole moment and the solar magnetic field strength at that distance. Presume inverse cube for the solar magnetic field strength; so the Mars field can be (1/1.52)³ or 0.285 weaker |
Magnetizing Mars
... sorry, no
Superconductors do not make a stupid idea into a super idea.
Some talk about terraforming Mars, turning this dead ball of rock into a miniature Earth. Mars has no magnetic field, so an artificial atmosphere (somehow) would get stripped away by solar UV and the much weaker gravity. How would a terraformed Mars 2 compared to Earth and Mars today?
|
units |
Earth |
Mars |
Mars 2 |
Semimajor Axis |
AU |
1.0 |
1.52 |
1.52 |
Mass |
kg |
5.972e24 |
6.42e23 |
6.42e23 |
Radius |
km |
6371 |
3389.5 |
3389.5 |
Gravity |
m/s² |
9.81 |
3.71 |
3.71 |
Planet Density |
kg/m³ |
5510 |
3930 |
3930 |
Escape Velocity |
m/s |
11.2 |
5.03 |
5.03 |
Escape Energy |
J/kg |
63 |
12.6 |
12.6 |
Dipole moment |
T-m³ |
7.91e15 |
~0 |
2.25e15 |
Iron Core radius (est) |
km |
3400 |
1800 |
1800 |
Atmosphere @surface: |
||||
Mass |
kg |
5.15e18 |
2.5e16 |
? |
Temperature |
K |
288 |
210 |
288 |
Density |
kg/m³ |
1.2 |
? |
? |
Pressure |
kPa |
101 |
0.64 |
? |
Pressure Scale Height |
km |
8.5 |
11.5 |
? |
Temperature Lapse Rate |
K/km |
6.5 |
2.2 |
? |
Primary Components |
|
N₂, O₂ |
CO₂ |
N₂, O₂ |
Molecular Weight |
g/mol |
30.5 |
44.0 |
30.5 |
The shielding effect of the magnetic field is not due to surface field strength, but the size of the magnetosphere ... which is due to dipole moment and the solar magnetic field strength at that distance. Presume inverse cube for the solar magnetic field strength; so the Mars field can be (1/1.52)³ or 0.285 weaker