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Tim A. Stern

As seen in: Color Research & Application, Science Magazine
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Articles by Tim A. Stern

Wide-angle seismic reflections reveal a lithosphere-asthenosphere boundary zone in the subducting Pacific Plate, New Zealand

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By Pasan Herath, Jennifer Burney, Mengqi Wang, Tim A. Stern
| Science Magazine Verified
Information Published In Science Advances Volume 8 | Issue 38 September 2022 Copyright Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
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High mantle seismic P-wave speeds as a signature for gravitational spreading of superplumes

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By Tim A. Stern, Simon Lamb, Nanyang Technological
| Science Magazine Verified
Abstract New passive- and active-source seismic experiments reveal unusually high mantle P-wave speeds that extend beneath the remnants of the world’s largest known large igneous province, making up the 120-million-year-old Ontong-Java-Manihiki-Hikurangi Plateau. Sub-Moho Pn phases of ~8.8 ± 0.2 km/s are resolved with negligible azimuthal seismic anisotropy, but with strong radial anisotropy (~10%), characteristic of aggregates of olivine with an AG crystallographic fabric.
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Stress field and kinematics for diffuse microseismicity in a zone of continental transpression, South Island, New Zealand

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By Simon Lamb, Emily Warren-Smith, Tim A. Stern
| Color Research & Application Verified
We analyze shallow (0–20?km) microseismicity adjacent to the Alpine Fault in New Zealand, where there is oblique convergence of the Australian and Pacific plates. Focal mechanisms for 155 earthquakes (June 2012 - October 2013) are inverted to determine the orientation of the stress field.
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