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A Detailed Investigation of Seismo-Tectonic Deformation of Peter I Ridgeстатья
- Авторы: Lukk A.A., Yunga S.L.
- Журнал: Izvestiya, Earth Physics
- Том: 16
- Номер: 4
- Год издания: 1980
- Первая страница: 249
- Последняя страница: 256
- Аннотация: Peculiarities of the focal mechanism of weak earthquakes (M < 4) in the central part of Garm region, represented by the Peter I Ridge, are analyzed. To each mechanism is ascribed a coefficient of similarity k to the general trend of the seismotectonic deformafion in Peter 1 Ridge. The spatial distribution of k is analyzed. The zones with low mean values of k and at the same time with a high level of seismicity are interpreted as zones of increased macrofracturing of the Earth's crust. In these zones earthquakes with non-quadrant distribution of the signs of the first P-wave arrivals occur. This effect is interpreted as a manifestation of complicated shearing without rupture at the foci of such earthquakes.
- Добавил в систему: Лукк Альберт Артурович