'Potato' Earth's Deep Secrets (Gravity Map)

BBC ^ | 7-24-2003 | Jonathan Amos

[blam]

[kcar]

Does this mean we should be launching rockets from Puerto Rico?

[Arkie2]

I've noticed a disturbing gravity high always in the vicinity of good bourbon.

[blam]

"Does this mean we should be launching rockets from Puerto Rico?"

Nah. It does look like the blue areas are more safe from earthquakes and volcanos though.

[farmfriend]

pinging the short list.

[DoctorMichael]

Interesting. Bump.

[Norse]

so, if i live in peru for 5 years...and then move to wisconsin....will i be superman?

[Redcloak]

California's slightly blueish. I just knew that we lacked gravitas!

[fhayek]

Damn, I'm still living in a blue state.

[FreedomCalls]

So the weight gain that my scale shows when I'm in Florida is not because I drink too many Pina Coladas while there, it's the extra strong gravity!

[SpaceBar]

It's a low pass filtered complete bouger anomaly. It makes some sense if one associates red (highs) with dense, cold, descending lithospheric plate margins and associated vulcanism, and blue (lows) with hot, light, ascending thermal plumes of molten material, hot diverging lithospheric plate margins, and again the associated vulcanism. The filtering removes the relatively high frequency components that distinguish dense oceanic crust and relatively light continental crust to reveal deeper structure.

[DarthFuzball]

I've noticed a disturbing gravity high always in the vicinity of good bourbon.

Which explains why it makes us fall down when we also get in the vicinity of good bourbon.

[EternalVigilance]

Heavy, man...heavy...

[Arkie2]

Precisely my point! Heavy, man!

[Arkie2]

"It's a low pass filtered complete bouger anomaly"

Sounds like the kid who sat in front of me in Biology. Always put up a hand to cover the probe when going for the bouger gold!

[zoyd]

It's a low pass filtered complete bouger anomaly. It makes some sense if one associates red (highs) with dense, cold, descending lithospheric plate margins and associated vulcanism, and blue (lows) with hot, light, ascending thermal plumes of molten material, hot diverging lithospheric plate margins, and again the associated vulcanism. The filtering removes the relatively high frequency components that distinguish dense oceanic crust and relatively light continental crust to reveal deeper structure.

Yeah. What he said.

[FReepaholic]

>>...It's a low pass filtered complete bouger anomaly. It makes some sense if one associates red (highs) with dense, cold, descending lithospheric plate margins and associated vulcanism, and blue (lows) with hot, light, ascending thermal plumes of molten material, hot diverging lithospheric plate margins, and again the associated vulcanism. The filtering removes the relatively high frequency components that distinguish dense oceanic crust and relatively light continental crust to reveal deeper structure...<<

I was going to say that.

[FReepaholic]

Notice the low gravity in the area of the Bermuda Triangle.

Da da DA da, Da da DA da (theme from "The Twilight Zone")

[_Jim]

As one spacecraft lurches and drags through the Earth's uneven gravity field, the second follows 220 km behind, measuring changes in their separation to the nearest micron (a thousandth of a millimetre).

I wonder if they're correcting for any solar 'windage' or the ever-so-slight effects a change in 'medium density' (basically space with a sparse particle population) has on the velocity of radio-wave propagation and any resultant 'phase' (the means by which they've got to be measuring any distance differences between the two satellite) errors this might create ...