Title
Mapping Current Fields in a Bay Using a Coast-Fitting Tomographic Inversion.
Abstract
Coast-fitting tomographic inversion that is based on function expansion using three types of normal modes (the Dirichlet, Neumann, and open boundary modes) is proposed to reconstruct current fields from the coastal acoustic tomography (CAT) data. The superiority of the method was validated while using CAT data that were obtained in 2015 in the Dalian Bay. The semidiurnal tidal and residual current fields were accurately reconstructed over the entire model domain surrounded by coasts and open boundaries. The proposed method was effective, particularly around the peripheral regions of the tomography domain and the near-coast regions outside the domain, where accurate results are not expected from the conventional inverse method based on function expansion by Fourier function series with no coast fittings. The error velocity for the semidiurnal tidal currents was 2.2 cm s(-1), which was calculated from the root-mean-square-difference between the CAT-observed and inverted range-averaged currents that were obtained along the nine peripheral transmission paths. The error velocity for the residual currents estimated from the 12-h mean net residual transport at the bay mouth was 0.9 cm s(-1). The errors were significantly smaller than the amplitude of the tidal and residual currents.
Year
DOI
Venue
2020
10.3390/s20020558
SENSORS
Keywords
Field
DocType
coastal acoustic tomography,coast-fitting tomographic inversion,semidiurnal tidal current,residual current,current-field mapping,net volume transport
Residual,Inversion (meteorology),Electronic engineering,Fourier transform,Tomography,Function series,Bay,Engineering,Normal mode,Amplitude,Geodesy
Journal
Volume
Issue
ISSN
20
2.0
1424-8220
Citations 
PageRank 
References 
0
0.34
0
Authors
9
Name
Order
Citations
PageRank
Minmo Chen101.01
Ze-Nan Zhu200.34
Chuanzheng Zhang300.34
Xiao-Hua Zhu400.68
Min Wang500.34
Xiaopeng Fan600.34
Ruixiang Zhao700.34
Ju Lin800.34
Arata Kaneko912.99