Global sub-crustal stress field

Robert Tenzer, M. Eshagh

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The sub-crustal stress has been traditionally computed using the Runcorn's formulae.This method allows computing the stress field only with a very limited spectral resolution.To overcome this problem, we apply a new method of computing the sub-crustal stress components based on utilizing the stress function with a subsequent numerical differentiation.This method increases the (degree-dependent) convergence domain of the asymptotically-convergent series and consequently allows evaluating the stress components to a higher spectral resolution compatible with currently available global crustal models.This method also facilitates the variable Moho geometry, instead of assuming only a constant Moho depth in the Runcorn's formulae.The crustal thickness and the subcrustal stress are then determined directly from gravity and (seismic) crustal structure models.The numerical result reveals that the largest intensity of the sub-crustal stress occurs mainly along seismically active convergent tectonic plate boundaries, particularly along oceanic subduction zones and continent-to-continent collision zones.
Original languageEnglish
Title of host publicationProceedings of the 16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment
Subtitle of host publicationChallenges, Processes and Strategies, IAMG 2014
PublisherCapital Publishing Company
Pages269-271
Number of pages3
ISBN (Electronic)9789381891254
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Challenges, Processes and Strategies, IAMG 2014 - Jawaharlal Nehru University, New Delhi, India
Duration: 17 Oct 201420 Oct 2014

Conference

Conference16th International Association for Mathematical Geosciences - Geostatistical and Geospatial Approaches for the Characterization of Natural Resources in the Environment: Challenges, Processes and Strategies, IAMG 2014
CountryIndia
CityNew Delhi
Period17/10/1420/10/14

Keywords

  • Crust
  • Gravity
  • Moho
  • Stress

ASJC Scopus subject areas

  • Mathematics (miscellaneous)
  • Earth and Planetary Sciences(all)

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