The Tides and kindred phenomena in the solar system

Darwin, George Howard

Bibliographic data

Multivolume work

Persistent identifier:: 874247535

Title:: Die Königlich Preussische Landes-Triangulation

Sub title:: Abrisse, Koordinaten und Höhen sämmtlicher von der Trigonometrischen Abtheilung der Landesaufnahme bestimmten Punkte

Year of publication:: 1903

Place of publication:: Berlin

Publisher of the original:: Im Selbstverlage

Identifier (digital):: 874247535

Language:: German

Editor:: Königlich Preußische Landesaufnahme

Document type:: Multivolume work

Volume

Persistent identifier:: 875018165

Title:: Regierungsbezirk Merseburg und Herzogtum Anhalt

Sub title:: mit 10 Beilagen

Scope:: VIII, 619 Seiten

Year of publication:: 1904

Place of publication:: Berlin

Publisher of the original:: Im Selbstverlage

Identifier (digital):: 875018165

Illustration:: Karten

Signature of the source:: Md. 9200(15)

Language:: German

Usage licence:: Public Domain Mark 1.0

Editor:: Königlich Preußische Landesaufnahme

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: Abrisse.

Document type:: Multivolume work

Structure type:: Chapter

Section

Title:: 2243. Klieken. (II. 0.) - [2303. Mochau. (III. 0.)]

Document type:: Multivolume work

Structure type:: Section

156 DYNAMICAL THEORY OF TIDE-WAVE CH. IX This principle may be applied to the case of the tides in the canal. When the canal is more than 1B| miles deep, the period of the sun’s disturbing force is 12 hours and is greater than the natural free period of the oscillation, because a free wave would go more than half round the earth in 12 hours. We conclude, then, that when the tide generating forces are trying to make it high-water, it will be so. It has been shown that these forces are tending to make high-water immediately under the sun and at its antipodes, and there accordingly will the high-water be. In this case the tide is said to be direct. But when the canal is less than 13f miles deep, the sun’s disturbing force has, as before, a period of 12 hours, but the period of the free wave is more than 12 hours, because a free wave would take more than 12 hours to get half round the earth. Thus the general principle shows that where the forces are trying to make high-water there will be low-water, and vice versa. Here, then, there will be low-water under the sun and at its antipodes, and such a tide is said to be inverted, because the oscillation is the exact inversion of what would be naturally expected. All the oceans on the earth are very much shallower than 14 miles, and so, at least near the equator, the tides ought to be inverted. The con clusion of the equilibrium theory will therefore be the exact opposite of the truth, near the equator. This argument as to the solar tide requires but little alteration to make it applicable to the lunar tide. In fact the only material difference in the

Access restriction

Copyright

fullscreen: The Tides and kindred phenomena in the solar system

Multivolume work

Volume

Chapter

Section

Table of contents

Cite and reuse

Monograph

Chapter

Image

Image fragment

Citation links

Citation recommendation