SEISMICITY AND CODA-Q VALUES IN THE EASTERN PYRENEES - 1ST RESULTS FROM THE LA CERDANYA SEISMIC NETWORK

被引：16

作者：

CORREIG, AM

MITCHELL, BJ

ORTIZ, R

机构：

[1] Laboratori d'Estudis Geofisics 'Eduard Fontseré,' Institut d'Estudis Catalans, Facultat de Fisica, Barcelona, 08028, Marti Franques s/n

[2] Department de Geologia Dinamica, Geofisica i Paleontologia, Facultat de Fisica, Universitat de Barcelona, Barcelona, 08028, Marti Franques s/n

[3] Department of Earth and Atmospheric Sciences, Saint Louis University, Saint Louis, 63156, MO, Laclede Station

[4] Museo Nacional de Ciencias Naturales, CSIC, Departamento de Geologia, Madrid, 28006

来源：

PURE AND APPLIED GEOPHYSICS | 1990年 / 132卷 / 1-2期

关键词：

coda Q; Q variations; Seismicity;

D O I：

10.1007/BF00874368

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Seismicity in the La Cerdanya region of the eastern Pyrenees has been accurately mapped for the first time using data from a local seismic network. The majority of earthquakes lies on or near the La Cerdanya fault or secondary faults to the south. Coda magnitudes determined for these earthquakes, using magnitude relations from other regions, range between -0.5 and 2.2. These are, however, presumed to be underdetermined values since Q values appear to be very low in the La Cerdanya region. Coda Q values at a frequency of 1.5 Hz range between 17 and 120, the lowest values being obtained for the most seismically active regions. Coda Q values also increase with increasing distance, a result which indicates decreasing seismic attenuation with increasing depth in the crust. © 1990 Birkhäuser Verlag.

引用

页码：311 / 329

页数：19

共 23 条

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