| Title | Direct temperature and salinity acoustic full waveform inversion |
| Publication Type | Journal Article |
| Year of Publication | 2013 |
| Authors | Bornstein G., Biescas B., Sallarès V., Mojica J.F |
| Journal | Geophysical Research Letters |
| Volume | 40 |
| Pagination | 4344–4348 |
| Date Published | aug |
| ISSN | 00948276 |
| Keywords | acoustic oceanography, adjoint method, full waveform inversion, thermohaline fine structure |
| Abstract | Recent work has shown that Full Waveform Inversion could be suitable to extract physical properties such as sound speed (c), density ($\rho$), temperature (T), and salinity (S) from the weak impedance contrasts associated with the ocean's thermohaline fine structure.The seismic inversion approaches proposed so far are based on the iterative inversion of c from multichannel seismic data, while the rest of parameters (T,S, and $\rho$) are determined in a second step using two equations of state and a local T-S empirical relationship. In this work, we present an alternative to this approach. Using 1-D synthetic seismic data, we demonstrate that the direct full waveform inversion of T and S using adjoint methods is feasible without the use of any local T-S relationship and that the models of physical properties obtained with this approach are far more accurate than those inferred from c. Key Points T and S can be inverted simultaneously from ocean acoustic data using FWI Local T-S empirical relationships are not required for the inversion Our T and S results have a potential density error of 0.01 kg/m3. © 2013. American Geophysical Union. All Rights Reserved. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84882307211&partnerID=tZOtx3y1 |
| DOI | 10.1002/grl.50844 |
