# Poission’s ratio from P- and S-wave traveltimes

Series | Geophysical References Series |
---|---|

Title | Problems in Exploration Seismology and their Solutions |

Author | Lloyd P. Geldart and Robert E. Sheriff |

Chapter | 13 |

Pages | 485 - 496 |

DOI | http://dx.doi.org/10.1190/1.9781560801733 |

ISBN | ISBN 9781560801153 |

Store | SEG Online Store |

## Problem 13.7

Find Poisson’s ratio for the five events in Figure 13.7a.

### Solution

Poisson’s ratio can be obtained from the ratio using equation (10.2) Table 2.2a. Since , , we can get from the traveltimes and then get using equation (10,2) (see Table 2.2a), that is,

Measurements and calculations are listed in Table 13.7a.

Event | |||||
---|---|---|---|---|---|

1 | 0.39 | 0.96 | 2.46 | 6.05 | 0.40 |

2 | 0.62 | 1.50 | 2.42 | 5.86 | 0.40 |

3 | 0.74 | 1.65 | 2.23 | 4.97 | 0.37 |

4 | 0.80 | 1.83 | 2.29 | 5.24 | 0.38 |

5 | 0.99 | 2.16 | 2.18 | 4.75 | 0.37 |

## Continue reading

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Mapping the vertical flank of a salt dome | Using refraction method to find depth to bedrock |

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3D methods | Specialized applications |

## Also in this chapter

- S-wave conversion in marine surveys
- Equally inclined orthogonal geophones
- Guided (channel) waves and normal-mode propagation
- Vertical seismic profiling
- Effect of velocity change on VSP traveltime
- Mapping the vertical flank of a salt dome
- Poission’s ratio from P- and S-wave traveltimes