Estimated Green's function extracted from superconducting gravimeters and seismometers

Xiangfang Zeng, Zhongwen Zhan, Yong Zheng*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Estimated Green's function (EGF) between stations has been extracted from ambient seismic noise, direct surface wave and coda waves. It is also confirmed by laboratory experiments on ultrasonics and theoretical derivations assuming diffusive wave field, equi-partition of modes or random sources on an enclosed surface. This method provides a new approach to study the crust and mantle structure at regional scale, continental scale and global scale. Following the achievements with seismometer records, the records of infrasonic station, hydrophone and microphone were also used to obtain the EGFs of different wave fields. Since superconducting gravimeter is a better long period instrument than regular seismometer, EGF at longer period is expected to be obtained with the cross correlation of gravity data. In this paper, we will show the EGFs extracted by cross-correlations between the superconducting gravimeters and the seismometers. Both the travel times and dispersion curves obtained from different data types are consistent. The result shows that it is possible to retrieve the deep structure by the cross correlation of gravity data.

Original languageEnglish
Pages (from-to)143-150
Number of pages8
JournalEarthquake Science
Volume24
Issue number2
DOIs
Publication statusPublished - Apr 2011
Externally publishedYes

Keywords

  • estimated Green's function
  • noise cross-correlation
  • superconducting gravimeter

Fingerprint Dive into the research topics of 'Estimated Green's function extracted from superconducting gravimeters and seismometers'. Together they form a unique fingerprint.

Cite this