RT Journal Article
T1 Changes in strain trajectories in three different types of plate tectonic boundary deduced from earthquake focal mechanisms
A1 Giner Robles, Jorge Luis
A1 González Casado, José Manuel
A1 Gumiel, Pablo
A1 García Cuevas, C.
AB Principal strain orientations (minimum horizontal compression—ex and maximum horizontal compression—ey) were established at three different types of plate tectonic boundary: two transform faults, an oceanic ridge located on the Southeast Indian Ridge and a trench located close to the South Sandwich Archipelago. To establish the strain patterns in each zone, 104 earthquake focal mechanisms (centroid-moment tensor solutions for earthquakes with mb≥4; Harvard seismology data, CMT) were examined by fault population analysis. Despite the existence of only one tectonic process that controlled deformation in these zones (divergence, convergence or passive displacement), and only one main strain tensor, several coeval strain ellipsoids were found. These differed from the main strain tensor in the location of the principal strains. In general, permutations were observed between the principal strains, i.e., interchanges between the location of the principal strain axes maintaining the strain ellipsoids in the same 3D orientation. Only in some cases were changes in the ellipsoid orientation associated with major structures.
PB Elsevier
SN 0040-1951
YR 2003
FD 2003
LK https://hdl.handle.net/20.500.14352/131154
UL https://hdl.handle.net/20.500.14352/131154
LA eng
NO Giner-Robles, J. «Changes in Strain Trajectories in Three Different Types of Plate Tectonic Boundary Deduced from Earthquake Focal Mechanisms». Tectonophysics, vol. 372, n.º 3-4, septiembre de 2003, pp. 179-91. DOI.org (Crossref), https://doi.org/10.1016/S0040-1951(03)00310-X.
NO Comisión Interministerial de Ciencia y Tecnología (España)
NO Ministerio de Ciencia y Tecnología (España)
DS Docta Complutense
RD 27 feb 2026