Published August 11, 2022
| Version 1.0
Dataset
Open
3D S-wave velocity profiles with random fields
Authors/Creators
- 1. Commissariat à l'Energie Atomique, Laboratoire Mécanique Paris-Saclay (ENS Paris-Saclay, Centrale Supélec, Université Paris Saclay, CNRS)
Description
This dataset contains 40,000 3D matrices representing S-wave velocity profiles with random fields. The spatial resolution corresponds to a grid of 9.6 x 9.6 x 9.6km with a spatial step of 300m (matrices are of size 33 x 33 x 33). Velocities go from 1,071 to 4,500m/s.
Each profile contains a 1.8km-thick bottom layer at constant velocity 4500m/s. Above, the profile contains between 1 and 6 layers of random thickness. In each layer, the mean velocity is chosen uniformly in [1,785; 3,214m/s] and the coefficient of variation follows a Gaussian distribution N(0.2; 0.1). Then, correlation lengths are chosen once for all the profile's layers among 1.5, 3, 4.5, 6 km in all three directions.
The random fields' kernel has a von Karman correlation with a Hurst exponent of 0.1 and log-normal marginal distributions.
Files
Files
(5.7 GB)
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