What exactly is causing those anomalies in Earth's gravity that cause
the ocean surface to be lower at some regions and higher at some other
regions (or similar effects on the dust on the moon)?



On 03.10.2015 06:28, Thomas de Groot wrote:
> On 3-10-2015 12:57, Stephen wrote:
>> On 10/3/2015 10:16 AM, clipka wrote:
>>>> This is also true for our own Earth in fact. Local variations of the
>>>> >gravitational field make the oceans' surface vary by several (tens of)
>>>> >meters, sometimes over quite short distances.
> 
>>> I did know/that/  - but tens of meters is still quite a shot from a
>>> kilometre.
>>>
>>
>> It certainly is. Mind boggling actually.
> 
> That is indeed true. Tells something about the composition of the Moon's
> interior.
> 
>>
>>> But did you also know that fast-flowing rivers are higher in the middle
>>> than at the banks - sometimes by as much as half a meter?
>>>
>>
>> Not the value but I am sure you can see it, on some rivers.
>>
>>
> 
> Ah yes. I don't remember exactly why that is: something to do with the
> drag along the border?
>

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