11.04.2013 Views

Predicting Weather By The Moon - Xavier University Libraries

Predicting Weather By The Moon - Xavier University Libraries

Predicting Weather By The Moon - Xavier University Libraries

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

<strong>Weather</strong> <strong>By</strong> <strong>The</strong> <strong>Moon</strong><br />

of-mass of the Earth and <strong>Moon</strong>. However, at local points<br />

on, above, or within the Earth, these two forces of mutual<br />

planetary attraction are not in equilibrium, and oceanic,<br />

atmospheric, and Earth tides are the result.<br />

ALL TIDES<br />

All the tides are caused by different strengths of the<br />

<strong>Moon</strong>’s gravity at different points on the Earth. <strong>The</strong> side of<br />

the Earth facing the <strong>Moon</strong> is about 4000 miles closer to<br />

the <strong>Moon</strong> than the center of the Earth is, and the <strong>Moon</strong>’s<br />

gravity pulls on the near side of the Earth more strongly<br />

than on the Earth’s center. This produces a tidal Earth bulge<br />

on the side of the Earth facing the <strong>Moon</strong>. <strong>The</strong> Earth rock is<br />

not perfectly rigid; the side facing the <strong>Moon</strong> responds by<br />

rising toward the <strong>Moon</strong> by a few inches on the near side.<br />

Estimates have ranged from 6-12 inches for the Earth Tide.<br />

<strong>The</strong> notion that the land beneath your feet, with you on it,<br />

rises a few inches to meet the moon as it passes overhead<br />

each day is hard to accept, as we have nothing to compare<br />

the vertical movement to.<br />

<strong>The</strong> Sun and <strong>Moon</strong> pull on everything, and the resultant<br />

directions of those separate (and at New moon times,<br />

combined) pulls depend on the massse of what is being<br />

pulled. <strong>The</strong> more fluid seawater responds quicker than the<br />

land, and the air responds quicker than the sea. <strong>The</strong>re is a<br />

bulge of water continually underneath the transitting moon<br />

which produces the ocean tides, but also a larger and quicker<br />

bulge of air and a smaller and slower bulge of land.<br />

Whilst a known high sea tide is on the moon’s side of<br />

the earth, it has often been speculated upon as to why there<br />

70

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!