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Abstract

Summary

The crustal compensation rate can be estimated from the differences gravimetric Moho and isostatic Moho with respect to gravimetric Moho, and allow the establishment of the relationship between isostatic compensation and seismicity in the central Anatolian region. The compensation rates range between 92% and 108%. What is surprising about the most of events are aligned in the zones that encompass seismic activity with the rates between 99% and 101% that are almost fully compensated. It is understood that the pattern of seismicity is also dependence of rheological structure of crustal blocks. The areas where compansation rate less than 100% and greater than 100% correspond to undercompensation and overcompensation, respectively. The results in undercompensation provide aseismic zones where preseismic locking is high and a major role for accommodating the stress evaluation of crustal blocks, and may then be related to preseismic activity. The crustal thickening obtained from gravity inversion in the eastern part of the central Anatolian region suggests overcompensated crust and the buoyant forces that result from subsidence, controlled by the density contrast between crust and lithospheric mantle. The overcompensation areas are almost aseismic, and indicates isostatic readjustment.

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/content/papers/10.3997/2214-4609.201702538
2017-11-05
2024-04-25

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References

  1. Bott, M. H. P.
    (1971). Evolution of young continental margins and formation of shelf basins. Tectonophysics, 11(5), 319–327.
     [Google Scholar]
  2. Deng, Y., Fan, W., Zhang, Z., & Liang, K.
    (2014). The gravity and isostatic Moho in North China Craton and their implications to seismicity. Earthquake Science, 27(2), 197–207.
     [Google Scholar]
  3. Gesch, D. B., Verdin, K. L., & Greenlee, S. K.
    (1999). New land surface digital elevation model covers the Earth. EOS, Transactions American Geophysical Union, 80(6), 69–70.
     [Google Scholar]
  4. Jeffreys, H.
    (1976). The earth. Its origin, history and physical constitution. The earth. Its origin, history and physical constitution., by Jeffreys, H.. 6th edition. Cambridge (UK): Cambridge University Press, 12+ 574 p.
     [Google Scholar]
  5. Koçyiğit, A.
    2003. Orta Anadolu’nun genel Neotektonik Özellikleri ve Depremselliği. Haymana-Tuzgölü-Ulukışla Basenleri Uygulamalı Çalışma, TPJD, Özel sayı:5, 1–26.
     [Google Scholar]
  6. Meinesz, F. A. V.
    (1940). Fundamental tables for regional isostatic reduction of gravity values. Noord-Hollandsche Uitg. Mij..
     [Google Scholar]
  7. Moritz, H.
    (1990). The inverse Vening Meinesz problem in isostasy. Geophysical Journal International, 102(3), 733–738.
     [Google Scholar]
  8. Oldenburg, D. W.
    (1974). The inversion and interpretation of gravity anomalies. Geophysics, 39(4), 526–536.
     [Google Scholar]
  9. Oruç, B.
    (2016). Orta Anadolu Bölgesinin Litosfer Yapısının Bouguer Gravite Verileri ve İzostazik Analizlerle Arasştıtılması. TÜBİTAK 115Y217 Numaralı Proje Birinci Bilimsel Gelişme Raporu (onaylanmış).
     [Google Scholar]
  10. Pamukcu, O., & Yurdakul, A.
    (2008). Isostatic compensation in western Anatolia with estimate of the effective elastic thickness. Turkish Journal of Earth Sciences, 17(3), 545–557.
     [Google Scholar]
  11. Parker, R. L.
    (1973). The rapid calculation of potential anomalies. Geophysical Journal International, 31(4), 447–455.
     [Google Scholar]
  12. Pavlis, N. K., Holmes, S. A., Kenyon, S. C., & Factor, J. K.
    (2008). An earth gravitational model to degree 2160: EGM2008. EGU General Assembly, 2008(4), 4–2.
     [Google Scholar]
  13. Watts, A. B.
    (2001). Isostasy and Flexure of the Lithosphere. Cambridge University Press.
     [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201702538
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Crustal Compensation Rate In Central Anatolian Region And Comparison Of Seismic Activity
Conference Proceedings 2017, 1 (2017); https://doi.org/10.3997/2214-4609.201702538
/content/papers/10.3997/2214-4609.201702538
/content/papers/10.3997/2214-4609.201702538
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