Shallow Seismicity and the Classification of Structures in the Lau Back‐Arc Basin

Autor: A. T. Baxter, M. D. Hannington, M. S. Stewart, J. M. Emberley, K. Breker, A. Krätschell, S. Petersen, P. A. Brandl, M. Klischies, R. Mensing, M. O. Anderson
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 7, Pp n/a-n/a (2020)
Druh dokumentu: article
ISSN: 1525-2027
DOI: 10.1029/2020GC008924
Popis: Abstract Back‐arc basins open in response to subduction processes, which cause extension in the upper plate, usually along trench‐parallel spreading axes. However, global seismic databases reveal that the majority of seismic events in the Lau Basin occur along transcurrent (strike‐slip) rather than extensional faults. To better characterize active deformation in this region, we compared centroid moment tensors (CMTs), calculated for large (Mw > 5), shallow (
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