کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4742569 | 1641597 | 2006 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Correlated shear and bulk moduli to 1400âkm beneath the Mediterranean region
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present a new model for the shear and compressional wave velocity structure of the Mediterranean plate boundary region. The model is obtained by a combined inversion of S and P data, where we solve in one single step for shear wave and bulk sound velocity variations. The ratios between the types of seismic velocities inferred from the combined inversion constrain the origin of heterogeneity. Our model is dominated by fast anomalies from subducted oceanic lithosphere. We found that only a slight amount of bulk sound velocity heterogeneity is required to explain the combined set of P and S data. Thus, compressional wave velocity anomalies are dominated by shear modulus heterogeneity and the ratio between bulk sound and shear wave velocity heterogeneity suggests a predominantly thermal origin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics of the Earth and Planetary Interiors - Volume 159, Issues 3â4, December 2006, Pages 213-224
Journal: Physics of the Earth and Planetary Interiors - Volume 159, Issues 3â4, December 2006, Pages 213-224
نویسندگان
C. Schmid, S. van der Lee, D. Giardini,