Acronym ATOMS
Funding Reference FCT - PDCTM/P/MAR/15296/1999
Dates 2000|2004
Summary

The ATOMS project aims at developing an integrated system for large-scale ocean monitoring, using acoustic tomography. In order to demonstrate the feasibility of the approach, an experimental test will be performed to characterize the upwelling filament structure off the Cape Sao Vicente.

Objectives:

1- To study the feasibility of a tomographic acoustic network to monitor the entire Portuguese EEZ. That network will be composed of 4/5 acoustic emitters/receivers located in the Azores, continental Portugal and Goringe bank and/or Madeira island. The modeled network will use archived data of temperature/salinity profiles (from NODC and BODC data bases). The main characteristics of the network will be determined in order to achieve a given performance in terms of temperature and current resolution.
2 – To develop an integrated system for Ocean Acoustic Tomography (OAT) and perform a test at sea.
3 – To develop a preliminary application of the integrated system to monitor a particular area off the Portuguese EEZ. The test target will be the Cape Sao Vicente filament area, which is one of the most developed and recurrent filaments observed and has important implications in the biological and chemical exchanges between the coastal and offshore ocean.

Research Groups Signal and Image Processing Group (SIPG)
Project Partners CINTAL, EST (UALG), CIMA, IH
ISR/IST Responsible
Sérgio Jesus
[1] Orlando Rodriguez, Sérgio Jesus, Range dependent tomography of internal tides with relative arrivals, Proc. International Conference on Computational and Experimental Engineering Sciences, Madeira, Portugal, 2004 - PDF
[2] Paulo Felisberto, C. Lopes, A. Carmo, Sérgio Jesus, A. Barbagelata, An autonomous system for ocean acoustic tomography, Sea Technology, vol.45, No.4, pp 17-23, 2004 - PDF
[3] Cristiano Soares, Sérgio Jesus, E. Coelho, Shallow water tomography in a highly variable scenario, Proc. Acoustics Inversion Methods and Experiments for Assessment of the Shallow Water Environment, Ischia, Italy, 2004
[4] Sérgio Jesus, Cristiano Soares, António Silva, E. Coelho, Acoustic Oceanographic Buoy testing during the Maritime Rapid Environmental Assessment 2003 sea trial, Proc. of ECUA'04 - 7th European Conference on Underwater Acoustics, Delft, The Netherlands, 2004 - PDF
[5] V. Corre, Sérgio Jesus, Tracking of cold water upwelling filaments in the ocean using matched field inversion, ACTA ACUSTICA united with ACUSTICA, Vol.89, pp. 604-613, 2003 - PDF
[6] Cristiano Soares, Sérgio Jesus, Broadband Matched-Field Processing: coherent vs. incoherent approaches, Journal of Acoustical Society of America, vol. 113(5), pp. 2587-2598, 2003 - PDF
[7] Paulo Felisberto, Sérgio Jesus, Y. Stephan, X. Demoulin, Shallow water tomography with a sparse array during the INTIMATE98 sea trial, Proc. Oceans2003 - IEEE Marine Technology and Ocean Science Conference, San Diego, USA, 2003
[8] Sérgio Jesus, Cristiano Soares, Blind Ocean Acoustic Tomography with Source Spectrum Estimation, Proc. ICTCA2003 - 6th International Conference on Theoretical and Computational Acoustics, pp. 211-220, Honolulu, Hawaii, USA, 2003 - PDF
[9] Cristiano Soares, Sérgio Jesus, Range-dependent acoustic tomography: modeling an upwelling filament using an asymmetric Gaussian function, 05/03-SiPLAB Report, University of Algarve, 2003
[10] Paulo Felisberto, C. Lopes, A. Carmo, Ultra Light Vertical Array / Remote Data Acquisition System, Rep. 03/03, SiPLAB Report, University of Algarve, 2003