Tomographic inversion of the El Nino profile by using a matched-mode processing (MMP) method

Author

Shang, E.C. ; Wang, Y.Y.

Author_Institution

Cooperative Inst. for Res. in Environ. Sci., Colorado Univ., Boulder, CO, USA

Volume

19

Issue

2

fYear

1994

fDate

4/1/1994 12:00:00 AM

Firstpage

208

Lastpage

213

Abstract

A high-resolution mode-matching (HRMM) estimator is used to invert El Nino profile perturbations. By matching a proper set of modal travel time perturbations in a 2-D parameter space constructed by the first two coefficients of the empirical orthogonal function (EOF), the El Nino profile can be efficiently inverted. As contrasted with the conventional linear inversion scheme, the performance of the matched-mode scheme is significantly improved because the nonlinearity of the modal travel time perturbation has been taken into account

Keywords

El Nino Southern Oscillation; acoustic signal processing; digital simulation; nonlinear acoustics; oceanographic techniques; signal detection; underwater sound; 2D parameter space; El Nino profile; empirical orthogonal function; estimator; matched-mode processing; modal travel time perturbation; modal travel time perturbations; nonlinearity; tomographic inversion; Acoustic signal detection; Atmospheric waves; Fluctuations; Inverse problems; Monitoring; Ocean temperature; Parameter estimation; Sea measurements; Sea surface; Tomography;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/48.286643

Filename

286643