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Moon quakes
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Brian Gaff
Sep 9, 2012, 12:42:28 PM9/9/12
to
Are these purely due to the tide of the earth on the moon, as I heard
suggested on tv a few nights ago, and if they are, are they keeping the moon
internally warm?
Brian
--
>From the Bed of Brian Gaff.
The email is valid as bri...@blueyonder.co.uk
Blind user.
suggested on tv a few nights ago, and if they are, are they keeping the moon
internally warm?
Brian
--
>From the Bed of Brian Gaff.
The email is valid as bri...@blueyonder.co.uk
Blind user.
Dr J R Stockton
Sep 11, 2012, 9:11:54 AM9/11/12
to
In sci.space.science message <k2ig7l$u4g$1...@dont-email.me>, Sun, 9 Sep
2012 12:42:28, Brian Gaff <bri...@blueyonder.co.uk> posted:
>Are these purely due to the tide of the earth on the moon, as I heard
>suggested on tv a few nights ago, and if they are, are they keeping the moon
>internally warm?
The Earth's tide on the Moon does not vary much, as the Moon always
faces us from a constant distance, approximately. Residual internal
cooling seems a possible cause.
--
(c) John Stockton, nr London, UK. Mail via homepage. Turnpike v6.05 MIME.
Web <http://www.merlyn.demon.co.uk/> - FAQqish topics, acronyms and links;
Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc.
2012 12:42:28, Brian Gaff <bri...@blueyonder.co.uk> posted:
>Are these purely due to the tide of the earth on the moon, as I heard
>suggested on tv a few nights ago, and if they are, are they keeping the moon
>internally warm?
faces us from a constant distance, approximately. Residual internal
cooling seems a possible cause.
--
(c) John Stockton, nr London, UK. Mail via homepage. Turnpike v6.05 MIME.
Web <http://www.merlyn.demon.co.uk/> - FAQqish topics, acronyms and links;
Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc.
Brad Guth
Oct 22, 2012, 3:12:37 PM10/22/12
to
On Sep 9, 9:42 am, "Brian Gaff" <bria...@blueyonder.co.uk> wrote:
> Are these purely due to the tide of the earth on the moon, as I heard
> suggested on tv a few nights ago, and if they are, are they keeping the m
oon
> internally warm?
>
> Brian
>
> -->From the Bed of Brian Gaff.
>
> The email is valid as bria...@blueyonder.co.uk
> Are these purely due to the tide of the earth on the moon, as I heard
> suggested on tv a few nights ago, and if they are, are they keeping the m
oon
> internally warm?
>
> Brian
>
> -->From the Bed of Brian Gaff.
>
> Blind user.
There's more solar derived tidal influence than obtained from Earth.
Even the 19 month cycle of Venus passing within 110 LD could cause
some measurable morphing of the moon, though not much heat generated.
The thorium and uranium innards of our moon could be still going
strong, although residual formation heat is the most likely core of
energy that we could safely tap into.
MODERATOR'S COMMENT:
I am very provisionally granting this based on the possibility of solar derived tidal influence. Though I can't find anything off-hand to back that. As for thorium, any discussion going down that road will most likely be quickly canned. -GdM
Steve Willner
Nov 17, 2012, 9:32:27 AM11/17/12
to
In article <dd5c346f-e2d4-47b1...@4g2000yql.googlegroups.com>,
question underlying this thread -- the Sun is more important than the
Earth simply because the Moon doesn't rotate with respect to the
Earth but does with respect to the Sun. The Earth's tidal _force_ on
the Moon is much larger than the Sun's.
> Even the 19 month cycle of Venus passing within 110 LD could cause
> some measurable morphing of the moon, though not much heat generated.
I doubt any influence of Venus is measureable, even given the extreme
precision of modern measurements via the retroreflectors.
> The thorium and uranium innards of our moon could be still going
> strong,
I'm not sure of the Moon's internal composition, but I'd be surprised
if radioactive elements do not contribute to the heating. I'd expect
radioactive heating and residual heat of formation to be far larger
than tidal heating, but I confess I haven't done the calculation.
For radioactive heating, I'd expect potassium-40 to be one of the
most important isotopes unless it has been depleted.
> although residual formation heat is the most likely core of
> energy that we could safely tap into.
That "tap into," safely or otherwise, doesn't look likely.
--
Help keep our newsgroup healthy; please don't feed the trolls.
Steve Willner Phone 617-495-7123 swil...@cfa.harvard.edu
Cambridge, MA 02138 USA
Brad Guth <brad...@gmail.com> writes:
> There's more solar derived tidal influence than obtained from Earth.
With regard to the Moon's interior heat -- which seems to be the
> There's more solar derived tidal influence than obtained from Earth.
question underlying this thread -- the Sun is more important than the
Earth simply because the Moon doesn't rotate with respect to the
Earth but does with respect to the Sun. The Earth's tidal _force_ on
the Moon is much larger than the Sun's.
> Even the 19 month cycle of Venus passing within 110 LD could cause
> some measurable morphing of the moon, though not much heat generated.
precision of modern measurements via the retroreflectors.
> The thorium and uranium innards of our moon could be still going
> strong,
if radioactive elements do not contribute to the heating. I'd expect
radioactive heating and residual heat of formation to be far larger
than tidal heating, but I confess I haven't done the calculation.
For radioactive heating, I'd expect potassium-40 to be one of the
most important isotopes unless it has been depleted.
> although residual formation heat is the most likely core of
> energy that we could safely tap into.
--
Help keep our newsgroup healthy; please don't feed the trolls.
Steve Willner Phone 617-495-7123 swil...@cfa.harvard.edu
Cambridge, MA 02138 USA
Brad Guth
Jul 6, 2013, 6:48:06 AM7/6/13
to
On Saturday, November 17, 2012 6:32:27 AM UTC-8, Steve Willner wrote:
> In article <dd5c346f-e2d4-47b1...@4g2000yql.googlegroups.c
Why exclude the use of modern technology and applied physics?
Tidal forces likely morph the moon in the same way the solar tide causes Ea
rth to morph and unavoidably heat up. However, the thicker crust of our mo
on is more solid and a lot stiffer, although the innards of our moon could
be sufficiently fluid or soft (as in less solid).
As is we really don't have any objective clue as to the innards of our moon
. Probes have not been allowed to penetrate and 3D map the innards of our
moon.
Are you suggesting that we humans are never going to be smart enough, as to
accomplishing anything of any off-world value?
> In article <dd5c346f-e2d4-47b1...@4g2000yql.googlegroups.c
Tidal forces likely morph the moon in the same way the solar tide causes Ea
rth to morph and unavoidably heat up. However, the thicker crust of our mo
on is more solid and a lot stiffer, although the innards of our moon could
be sufficiently fluid or soft (as in less solid).
As is we really don't have any objective clue as to the innards of our moon
. Probes have not been allowed to penetrate and 3D map the innards of our
moon.
Are you suggesting that we humans are never going to be smart enough, as to
accomplishing anything of any off-world value?
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