Anelastic Properties of the Crust in the Mediterranean Area

  1. Robert F. Mereu,
  2. Stephan Mueller and
  3. David M. Fountain
  1. A. Craglietto2,
  2. G. F. Panza2,
  3. B. J. Mitchell3 and
  4. G. Costa1

Published Online: 9 APR 2013

DOI: 10.1029/GM051p0179

Properties and Processes of Earth's Lower Crust

Properties and Processes of Earth's Lower Crust

How to Cite

Craglietto, A., Panza, G. F., Mitchell, B. J. and Costa, G. (1989) Anelastic Properties of the Crust in the Mediterranean Area, in Properties and Processes of Earth's Lower Crust (eds R. F. Mereu, S. Mueller and D. M. Fountain), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM051p0179

Author Information

  1. 1

    Istituto Di Geodesia E Geofisica, Università Di Trieste, I-34100 Trieste, Italy

  2. 2

    International School for Advanced Studies, P.O. Box 586, I-34100 Trieste, Italy

  3. 3

    Department of Earth and Atmospheric Sciences, Saint Louis University, Saint Louis, Missouri 63156, Usa

Publication History

  1. Published Online: 9 APR 2013
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780875904566

Online ISBN: 9781118666388

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Keywords:

  • Earth—Crust—Congresses;
  • Geophysics—Congresses

Summary

The single-station mul timode method for the estimation of Qβ is applied to earthquakes recorded at stations operating in the Mediterranean area. Because relatively short paths are used the procedure allows studies on a regional scale. the effect of lateral variations on Q estimates can be minimized compared to what can be achieved with single station-single mode methods. This is particularly important in tectonically active regions like the Mediterranean. the main result of our study is the identification of four major categories of regions of anelastic properties in the region of study. the Eastern Po Valley characterized by a thick cover of seciments has a high Q, up to 1000, whereas the North-Cenera1 Adriatic Sea and the Alps have medium Q values of about 500. the Apennines, the Rhinegraben, the Tyrrhenian Sea, and the Mediterranean region between Crete and Southern Italy are characterized by low Q values, 80–100, in the upper 20–25 km of the crust. Q values increase to 250–300 in the lower crust in all of the regions except the Rhinegraben and the Tyrrhenian Sea where a Q of about 100 seems to characterize the whole lithosphere.