pure and applied geophysics

, Volume 134, Issue 2, pp 229–242 | Cite as

b-Values of two tectonic parts in the circum-pacific belt

  • Theodoros M. Tsapanos


Two different data sets have been applied to compute theb-parameter of the magnitude-frequency relation for two different areas in the circum-Pacific belt. These areas are: a) South America, Middle America and Mexico, b) all the remaining island arcs of the circum-Pacific belt, starting from Alaska and the Aleutian islands and proceeding southeastwards. The first data set spreads over 77 years, while the second one covers a 90-year period. In both cases the results clearly showed that theb-values are lower in the first of the above-mentioned areas, while respectively higher in the second. This is due to the tectonic conditions in these areas as estimated during the present work.

Key words

b-values circum-Pacific belt tectonic conditions 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Abe, K. (1979),Size of Great Earthquakes of 1837–1974 Inferred from Tsunami Data, J. Geophys. Res.84, 1561–1568.Google Scholar
  2. Abe, K. (1981),Magnitudes of Large Earthquakes from 1904 to 1980, Phys. Earth Planet. Inter.27, 72–92.Google Scholar
  3. Abe, K. (1984),Compliments to “Magnitudes of Large Shallow Earthquakes from 1904 to 1980”, Phys. Earth Planet. Inter.34, 17–23.Google Scholar
  4. Abe, K., andKanamori, H. (1979),Temporal Variation of the Activity of Intermediate and Deep Focus Earthquakes, J. Geophys. Res.,84, 3589–3595.Google Scholar
  5. Abe, K., andNoguchi, S. (1983),Revision of Magnitudes of Large Shallow Earthquakes, 1897–1912, Phys. Earth. Planet. Inter.33, 1–11.Google Scholar
  6. Allen, C. R., Amand, P. S., Richter, C. F., andNordquist, J. M. (1965),Relation Between Seismicity and Geological Structure in the Southern California Region, Bull. Seismol. Soc. Am.55, 752–797.Google Scholar
  7. Barazangi, M., Pennington, W., andIsacks, B. (1975),Global Study of Seismic Wave Attenuation in the Upper Mantle Behind Island Arcs Using pP Waves, J. Geophys. Res.80, 1079–1092.Google Scholar
  8. Båth, M. (1981),Earthquake Magnitude—Recent Research and Current Trends, Earth Sci. Rev.17, 315–398.Google Scholar
  9. Galanopoulos, A. (1960),Global Geography of Earthquakes, Bull. N. O. Athens, 1–32.Google Scholar
  10. Geller, R. J., Kanamori, H., andAbe, K. (1978),Addenda and Corrections to Magnitude of Great Shallow Earthquakes from 1904 to 1952, Bull. Seismol. Soc. Am.68, 1763–1764.Google Scholar
  11. Gumbel, E. J.,Stastics of Extremes (Columbia Univ. Press, New York, 1958), 375 pp.Google Scholar
  12. Gutenberg, B., andRichter, C. F. (1944),Frequency of Earthquakes in California, Bull. Seismol. Soc. Am.34, 185–188.Google Scholar
  13. Gutenberg, B., andRichter, C. F.,Seismicity of the Earth and Associated Phenomena (Princeton Univ. Press, Princeton, New York, 1954), 310 pp.Google Scholar
  14. Hatzidimitriou, P. M., Papadimitriou, E. E., Mountrakis, D. M., andPapazachos, B. C. (1985),The Seismic Parameter b of the Frequency-magnitude Relation and its Association with the Geological Zones in the Area of Greece, Tectonophysics,120, 141–151.Google Scholar
  15. Heezen andTharp (1977),World Ocean Floor Map, U.S. Navy Office of Naval Research.Google Scholar
  16. Huene, von R., Klum, L. D., andMiller, J. (1985),Structure of the Frontal Part of the Andean Convergent Margin, J. Geophys. Res.90, 5429–5442.Google Scholar
  17. Kanamori, H., andAbe, K. (1979),Reevaluation of the Turn-of-the-century Seismic Peak, J. Geophys. Res.84, 6131–6139.Google Scholar
  18. Karig, D. (1971),Origin and Development of Marginal Basins in the Western Pacific, J. Geophys. Res.76, 2542–2561.Google Scholar
  19. Miyamura, S. (1962),Magnitude-frequency Relations and its Bearing to Geotectonics, Proc. Japan. Acad.38, 27–30.Google Scholar
  20. Miyamura, S. (1976),Provisional Magnitudes of Middle America Earthquakes not Listed in the Magnitude Catalogue of Gutenberg-Richter, Bull. Intern. Seismol. Earthq. Eng.14, 41–46.Google Scholar
  21. Miyamura, S. (1978),Magnitudes of Larger Earthquakes not Included in the Gutenberg-Richter Magnitude Catalogue, Tectonophysics49, 171–184.Google Scholar
  22. Mogi, K. (1963),Study of Elastic Shocks Caused by the Fracture of Heterogeneous Materials and its Relation to Earthquake Phenomenon, Bull. Earthq. Res. Inst., Tokyo Univ,40, 125–173.Google Scholar
  23. Mogi, K. (1963),Earthquakes and Fractures, Tectonophysics5, 35–55.Google Scholar
  24. Molnar, P., andOliver, J. (1969),Lateral Variations in Attenuation in the Upper Mantle and Discontinuities in the Lithosphere, J. Geophys. Res.74, 2648–2682.Google Scholar
  25. Papazachos, B. C. (1974),On Certain Aftershock and Foreshock Parameters in the Area of Greece, Ann. di Geofis.27, 497–515.Google Scholar
  26. Papazachos, B. C. (1980),Seismicity Rates and Long-term Prediction in the Aegean Area, Quatern. Geod.3, 171–190.Google Scholar
  27. Rothe, J. P.,The Seismicity of the Earth 1953–1965 (UNESCO, Paris 1969), 330 pp.Google Scholar
  28. Sacks, I. S., andOkada, A. (1975),A Comparison of the Anelasticity Structure Beneath Western South America and Japan, Phys. Earth Planet. Inter.9, 211–219.Google Scholar
  29. Scholz, C. H. (1968),The Frequency-magnitude Relation of Microfracturing in Rock and its Relation to Earthquakes, Bull. Seismol. Soc. Am.58, 339–415.Google Scholar
  30. Tsapanos, T. M. (1985),A Contribution to the Study of the Seismicity of the Earth, Ph.D. Thesis (in Greek), Univ. of Thessaloniki, 147 pp.Google Scholar
  31. Tsapanos, T. M., Scordilis, E. M., andPapazachos, B. C. (1988),A World-world Homogeneous and Complete Catalogue of Earthquakes for the Period 1898–1985, Publ. of University of Thessaloniki, Geophysical Lab., 188 pp.Google Scholar
  32. Utsu, T. (1966),A Statistical Significance Test of the Difference in b-value Between Two Earthquake Groups, J. Phys. Earth.14, 37–40.Google Scholar
  33. Wang, J. H. (1988),b-values of Shallow Earthquakes in Taiwan, Bull. Seismol. Soc. Am.78, 1243–1254.Google Scholar

Copyright information

© Birkhäuser Verlag 1990

Authors and Affiliations

  • Theodoros M. Tsapanos
    • 1
  1. 1.Geophysical LaboratoryAristotelian University of ThessalonikiThessalonikiGreece

Personalised recommendations