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Handbook of Physical Constants

Handbook of Physical Constants

Editor(s)
Francis Birch Chairman
Francis Birch Chairman
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J. F. Schairer
J. F. Schairer
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H. Cecil Spicer
H. Cecil Spicer
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Geological Society of America
DOI:
https://doi.org/10.1130/SPE36
Copyright:
© 1942 Geological Society of America
Geological Society of America
ISBN print:
9780813720364
Publication date:
January 01, 1942
Book Chapter

Geodetic Constants: Data Concerning the Interior of the Earth

Author(s)
Francis Birch
Francis Birch
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Doi:
https://doi.org/10.1130/SPE36-p103
  • Published:
    January 01, 1942

 Contents  
  Page 
Table 8 1. Figure of the Earth’s surface 104 
 2. Gravity at the surface; mass, mean density, moment of inertia 104 
 3. Pressure, density, acceleration of gravity and ellipticity of layers of equal density in the Earth 105 
 4. The Earth’s core 106 
 Contents  
  Page 
Table 8 1. Figure of the Earth’s surface 104 
 2. Gravity at the surface; mass, mean density, moment of inertia 104 
 3. Pressure, density, acceleration of gravity and ellipticity of layers of equal density in the Earth 105 
 4. The Earth’s core 106 
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1. Benfield, Z. f. Geophys. 13, 157, 1937.

2. Birch, Bull. Seism. Soc. Amer. 29, 463, 1939.

3. Bullen, M. N. R. A. S. Geophys. Supp. 3, 395, 1936.

4. Bullen, Trans. Roy. Soc. New Zealand, 67, 122, 1937.

5. Bullen, idem, 69, 188, 1939.

6. Bullen, Bull. Seism. Soc. Amer. 30, 235, 1940.

7. Gutenberg and Richter, Beitr. z. Geophys. 54, 94, 1939.

8. Gutenberg and Richter, M. N. R. A. S. Geophys. Supp. 4, 363, 1938.

9. Jeffreys, M. N. R. A. S. Geophys. Supp. 4, 537, 548 and 594, 1939.

10. Lambert, The Internal Constitution of the Earth, Chap. 13, McGraw-Hill, New York, 1939.

11. Olczak, Acta Astron. 3, 81, 1938.

12. Williamson and Adams, J. Washington Acad. Sci. 13, 413, 1923.

Table 8–1.—Figure of the Earth’s Surface

(Ref. 10)

Semi-axes of International Ellipsoid of Reference (1924):

  • Equatorial, a = 6378.388 km.

  • Polar, c = 6356.912 km.

 
Radius of sphere of equal volume, α0 = 6371 km. 
Ellipticity of surface, (a – c)/a = 1/297 = 0.00337. (For ellipticity of internal levels, see Table 8–3.) 
Quadrant of a meridian = 10,002.288 km. 
Quadrant of the equator = 10,019.148 km. 
Area of surface = 5.101 × 1018 cm.2 
Volume = 1.0832 
Semi-axes of International Ellipsoid of Reference (1924):

  • Equatorial, a = 6378.388 km.

  • Polar, c = 6356.912 km.

 
Radius of sphere of equal volume, α0 = 6371 km. 
Ellipticity of surface, (a – c)/a = 1/297 = 0.00337. (For ellipticity of internal levels, see Table 8–3.) 
Quadrant of a meridian = 10,002.288 km. 
Quadrant of the equator = 10,019.148 km. 
Area of surface = 5.101 × 1018 cm.2 
Volume = 1.0832 
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