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@Article{AlvesRossVale:2020:DeNeLo,
               author = "Alves, F{\'a}bio Corr{\^e}a and Rossetti, Dilce de F{\'a}tima 
                         and Valeriano, M{\'a}rcio de Morisson",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Detecting neotectonics in the lowlands of Amazonia through the 
                         analysis of river long profiles",
              journal = "Journal of the South American Earth Sciences",
                 year = "2020",
               volume = "100",
                pages = "e102553",
                month = "June",
             keywords = "Digital elevation model, Remote sensing, Transient landscape, 
                         Normalized steepness index, Knickpoint.",
             abstract = "There has been a considerable number of studies focusing on the 
                         analysis of river long profiles based on stream power incision 
                         models aiming to detect areas affected by neotectonics. Most of 
                         these studies have successfully uncovered active tectonics in 
                         mountainous landscapes, with some examples in areas of low reliefs 
                         around the globe. However, this kind of investigation has rarely 
                         been used in large tropical lowlands, such as the Amazonian 
                         lowlands, where the application of river long profiles is still 
                         challenging. The main aim of the present work was to test the 
                         functionality of methods based on river profiles to detect 
                         neotectonic reliefs in lowland landscapes. The Negro River basin 
                         was selected for this investigation, assuming the several 
                         indications of tectonic activity during the late Pleistocene and 
                         Holocene. We tested the normalized channel steepness index 
                         (k(sn)), with the identification of knickpoints and interpretation 
                         of swath profiles, computed from the 30 m digital elevation model 
                         provided by the Shuttle Radar Topography Mission. The results 
                         showed streams with profiles bounded by a set of knickpoints 
                         represented by very low k(sn) values in the right (average k(sn) = 
                         8) and left (average k(sn) = 10) margins of the Negro River. These 
                         values contrast with the high range of k(sn) values generally 
                         found for rivers of tectonically active mountainous landscapes. 
                         Even with low values, we verified that a slight increase in k(sn) 
                         values was enough to detect transient rivers related with strike 
                         slip faults in Amazonia lowlands. The swath profiles also showed 
                         sectors on relief compatible with changes in the base level of the 
                         tributaries, with the record of knickpoints and an increase in 
                         k(sn) values. The experimental results obtained in this work 
                         motivate further quantitative investigation in Amazonian lowlands 
                         by testing geological data with new robust techniques from river 
                         profiles.",
                  doi = "10.1016/j.jsames.2020.102553",
                  url = "http://dx.doi.org/10.1016/j.jsames.2020.102553",
                 issn = "0895-9811",
             language = "en",
           targetfile = "alves_detecting.pdf",
        urlaccessdate = "17 abr. 2021"
}


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