@Article{AlmeidaFoMiraYama:1999:ReDeTo,
               author = "Almeida Filho, Raimundo and Miranda, Fernando Pelon de and 
                         Yamakawa, Tadashi",
          affiliation = "National Institute for Space Research-INPE, Caixa Postal 515 and 
                         Petrobras/CENPES, Cidade Univcrsit{\'a}ria, Ilha do 
                         Fund\̃o, Q-7, Rio de Janeiro-RJ, Brazil and Earth Resources 
                         Satellite Data Analysis Center-ERSDAC 3-12-1, Kachidoki Chuo-Ku, 
                         Tokyo 104, Japan",
                title = "Remote detection of a tonal anomaly in area of hydrocarbon 
                         microseepage, Tucano basin, north-eastern Brazil",
              journal = "International Journal of Remote Sensing",
                 year = "1999",
               volume = "20",
               number = "13",
                pages = "2683--2688",
                month = "Sep.",
             keywords = "Gamma rays, Geochemistry, Hydrocarbons, Magnetic susceptibility, 
                         Radioactivity, Seepage, Hydrocarbon microseepage, Landsat-Thematic 
                         mapper, Radioactivity intensity, Soil gas, Tonal anomaly.",
             abstract = "Mapping of a tonal anomaly in an area of hydrocarbon microseepage 
                         was possible using a Landsat-Thematic Mapper false-colour 
                         composite consisting of TM2/3, TM4/3 and of the difference 
                         TW.3-TM4/3, displayed as red, green and blue respectively. In this 
                         false-colour composite, green and yellow express variations in the 
                         vegetation cover, whereas hues of magenta are related to terrain 
                         conditions representing bleached materials, which occur close to 
                         the centre of a soil gas anomaly. Simultaneous occurrence of 
                         anomalous soil gas values with magnetic and radioactive minerals 
                         suggests that a reducing environment associated with the 
                         microseepage phenomenon created the bleached materials, identified 
                         as a tonal anomaly in the enhanced TM image.",
           copyholder = "SID/SCD",
                 issn = "1516-697X",
                label = "1068",
             language = "en",
           targetfile = "raimundo6.pdf",
        urlaccessdate = "05 maio 2024"
}