Enhanced Surface Imaging of Crustal Deformation

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.

• Bayesian inversion and geodesy
• GPS analysis and geodesy
• Geodesy and Crustal deformation
• Partial differential equations and stress and strain
• Spatial analysis and geodesy
• Stress and strain and crustal deformation
• Tectonic hazards and crustal deformation

• 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

Policies and ethics