THEORETICAL STUDY ON THE SPATIAL AUTO-CORRELATION METHOD FOR ESTIMATION OF UNDERGROUND STRUCTURE USING MICROTREMOR

• KONNO Katsuaki

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 地下構造推定に用いる2点間および3点間空間自己相関法に関する理論的検討
• チカ コウゾウ スイテイ ニ モチイル 2テン カン オヨビ 3テン カン クウカン ジコ ソウカンホウ ニ カンスル リロンテキ ケントウ

Abstract

There is the spatial auto-correlation method (SPACM) for estimation of the phase velocity of surface wave using the array observation of microtremors. It needs to install the seismometers on the circle and at the center. In this paper, a relation between the number of the seismometers and an error in the estimation is made clear. Furthermore, the theoretical applicability of SPACM using two or three seismometers is investigated. As a result, it is found that we can estimate the phase velocity of surface waves having wavelength of more than 3.4 times of the array's radius when three seismometers are arranged at vertices of a right triangle. However, when SPACM are applied to array observation using two seismometers, there is a possibility that the estimation includes a large error. Therefore, a new procedure is proposed to improve the estimation.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2000 (654), 367-375, 2000-07-21

  Japan Society of Civil Engineers

Keywords

• microtremor
• array observation
• spatial auto-correlation method
• Rayleigh wave
• phase velocity

Details

• CRID: 1390282680285574400
• NII Article ID: 10004544254
• NII Article ID: 10007238364
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2000.654_367
• ISSN: 18827187
• ISSN: 02897806
• ISSN: http://id.crossref.org/issn/02897806
• NDL BIB ID: 5468341
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5468341
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2000/654/2000_654_367/_pdf
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed