1-Dimensional Synthetic Examples

Abstract

We present forward calculations of synthetic velocities, strain and VDoHS rates for faults. Scaling relationships using the strain andVDoHS rate curves provide a method for estimating fault properties: locking depth, dip and slip rate. We discuss the effects of discrete sampling and random noise. Shallow regions of marked hetero- geneity at the Earth’s surface have negligible effect on the VDoHS rates. We illustrate our new inversion methodology using synthetic examples with randomly generated noise, obtaining VDoHS rates and from them associated strain rates. We demonstrate that VDoHS rates are much better than strain rates at distinguishing the signals from multiple closely spaced faults and, with sufficiently small data spacing and standard errors, can be used to identify and characterize individual faults. In addition, we show that our methodology is a more robust way of obtaining strain rates from point (GPS) velocities than current state-of-the art methodology.