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Enhanced Surface Imaging of Crustal Deformation

Obtaining Tectonic Force Fields Using GPS Data

  • Book
  • © 2015

Overview

Part of the book series: SpringerBriefs in Earth Sciences (BRIEFSEARTH)

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Table of contents (7 chapters)

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About this book

This book takes an in depth look at a novel methodology for analyzing Global Positioning System (GPS) data to obtain the highest possible resolution surface imaging of tectonic deformation sources without prescribing the nature of either the sources or the subsurface medium. GPS methods are widely used to track the surface expression of crustal deformation at tectonic plate boundaries, and are typically expressed in terms of velocity fields or strain rate fields. Vertical derivatives of horizontal stress (VDoHS) rates at the Earth’s surface can also be derived from GPS velocities, and VDoHS rates provide much higher resolution information about subsurface deformation sources than velocities or strain rates. In particular, VDoHS rates allow for high precision estimates of fault dips, slip rates and locking depths, as well as objective characterization of previously unknown (or hidden) tectonic deformation zones.

Authors and Affiliations

  • GNS Science, Dunedin, New Zealand

    A. John Haines

  • Institute for Geophysics, University of Texas, Austin, USA

    Lada L. Dimitrova, Laura M. Wallace

  • GNS Science, Avalon, New Zealand

    Charles A. Williams

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