Representation for Horizontal Crustal Deformation by Means of Chebychev Polynomials.

Toshiya Sato, Satoshi Miura, Kenji Tachibana

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The Geographical Survey Institute has repeated the first order triangulations and trilaterations with high precision and high density since Meiji era in Japan. Many studies have been done in regard to horizontal strains of the crust by using these data. In those papers, they assume homogeneous strain fields in each triangle formed by three neighbouring triangulation stations. As a result, these triangles produce apparently discontinuous strain fields and are not convenient to elucidate spatial patterns and regional features. In this paper, we present a method to obtain continuous distributions of horizontal displacements and strains of the crust by means of triangulation and trilateration data in order to compare with other geophysical data sets. Weemploy two-dimensional Chebychev polynomials to interpolate horizontal displacements and strains at regularly distributed grid points. We applied the method for the first order triangulation and trilateration data in two regions in Japan to clearly reveal the regional features.

Original languageEnglish
Pages (from-to)263-274
Number of pages12
Journaljournal of the geodetic society of japan
Volume39
Issue number3
DOIs
Publication statusPublished - 1993 Jan 1

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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