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3D density inversion of gravity gradiometry data with a multilevel hybrid parallel algorithm

  • Zhen-Long HouEmail author
  • Da-Nian Huang
  • En-De Wang
  • Hao Cheng
Article

Abstract

The density inversion of gravity gradiometry data has attracted considerable attention; however, in large datasets, the multiplicity and low depth resolution as well as efficiency are constrained by time and computer memory requirements. To solve these problems, we improve the reweighting focusing inversion and probability tomography inversion with joint multiple tensors and prior information constraints, and assess the inversion results, computing efficiency, and dataset size. A Message Passing Interface (MPI)-Open Multi-Processing (OpenMP)-Computed Unified Device Architecture (CUDA) multilevel hybrid parallel inversion, named Hybrinv for short, is proposed. Using model and real data from the Vinton Dome, we confirm that Hybrinv can be used to compute the density distribution. For data size of 100×100×20, the hybrid parallel algorithm is fast and based on the run time and scalability we infer that it can be used to process the large-scale data.

Keywords

gravity gradiometry data density inversion GPU MPI hybrid parallel inversion 

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Notes

Acknowledgements

We thank Bell Geospace Inc. for permission to use the FTG data from the Vinton Dome. The authors also are very grateful to the anonymous reviewers for the helpful comments comments and valuable suggestions which improved this manuscript significantly

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Copyright information

© The Editorial Department of APPLIED GEOPHYSICS 2019

Authors and Affiliations

  • Zhen-Long Hou
    • 1
    Email author
  • Da-Nian Huang
    • 2
  • En-De Wang
    • 1
  • Hao Cheng
    • 1
  1. 1.Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, School of Resources and Civil EngineeringNortheastern UniversityShenyangChina
  2. 2.College of Geo-exploration Science and TechnologyJilin UniversityChangchunChina

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