@InProceedings{SantaRosa:1998:ImPrTe,
               author = "Santa Rosa, Ant{\^o}nio Nuno de Castro",
                title = "An image processing technique to derive geological discontinuities 
                         in South America",
            booktitle = "Proceedings...",
                 year = "1998",
               editor = "Costa, L. da F and Camara, G.",
         organization = "International Symposium on Computer Graphics, Image Processing and 
                         Vision, 11. (SIBGRAPI)",
            publisher = "Sociedade Brasileira de Computa{\c{c}}{\~a}o",
              address = "Porto Alegre",
                 note = "The conference was held in Rio de Janeiro, RJ, Brazil, from 
                         October 20 to 23.",
             keywords = "image processing, image modeling, moho discontinuity, geology, 
                         processamento de imagem, modelagem de imagem, reconhecimento de 
                         padr{\~a}o",
             abstract = "The aim of this paper is to construc an image from Moho 
                         discontinuity in South America. This result can be obtained 
                         through global modeling of Rayleigh waves phase and group velocity 
                         (ROSA (1986) and SANTA ROSA (1996)). The initial 2-D inversion 
                         model was defined according to the geographic position of each 
                         block, sized 10 x 10 degrees by ROSA (1986), in the continent and 
                         in the ocean. As a result of the inversion, we obtained global 
                         group velocity, i.e. the images for the following periods: 50, 55, 
                         60, 65, 70 e 75 seconds. In the next step, 48 blocks were 
                         selected; that is, the number of blocks that cover the whole 
                         extension of South America. Global phase and group velocity 
                         inversions were made for each block, thus determining shear wave 
                         versus depth images. Finally, to determine the image of the 
                         Mohorocivic discontinuity for South America, we fixed the minimum 
                         value for shear wave velocity in 4.6 km/s and interpolated it for 
                         all blocks. The final result is the first image of the Moho 
                         discontinuity in South America. This work was supported by the 
                         Brazilian National Council for Scientific and Technological 
                         Development (CNPq).",
  conference-location = "Rio de Janeiro, RJ, Brazil",
      conference-year = "20-23 Oct. 1998",
         organisation = "SBC - Sociedade Brasileira de Computa{\c{c}}{\~a}o",
                  ibi = "83LX3pFwXQZeBBx/fLgGL",
                  url = "http://urlib.net/ibi/83LX3pFwXQZeBBx/fLgGL",
           targetfile = "sse079.pdf",
        urlaccessdate = "2024, May 03"
}