Relative elevation of the Rio Bermejo with respect to its floodplain
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| Autori principali: | , , , , , |
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2023
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| _version_ | 1867169463675125760 |
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| author | Repasch, Marisa N Scheingross, Joel S Cook, Kristen L Sachse, Dirk Dosch, Sophia Orfeo, Oscar |
| author_facet | Repasch, Marisa N Scheingross, Joel S Cook, Kristen L Sachse, Dirk Dosch, Sophia Orfeo, Oscar |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Relative elevation data was extracted from the map of residual topography over 25-40 km swaths extending from the Rio Bermejo channel centerline. We quantified the superelevation and incision of the Rio Bermejo relative to the surrounding topography by making a residual elevation map (sensu Cohen et al. (2015, doi:10.1130/2015.1212(16); McGlue et al. (2016, doi:10.2110/jsr.2016.82)). We created a series of 1 km wide swaths set perpendicular to the Rio Bermejo flow direction and extracted the minimum elevation of the active Rio Bermejo channel within each swath using the TanDEM-X DEM. Variability in DEM values for water surfaces created ~2-4 m noise in elevation values of the active channel which we smoothed by fitting a 4th order polynomial to the extracted active channel elevations to estimate the downstream change in elevation. We subtracted the polynomial fit from the DEM to yield a DEM that was de-trended from the Rio Bermejo channel slope, with values representing the local relief between the active channel and the surrounding terrain. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_959937 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Relative elevation of the Rio Bermejo with respect to its floodplain Repasch, Marisa N Scheingross, Joel S Cook, Kristen L Sachse, Dirk Dosch, Sophia Orfeo, Oscar Argentina; channel migration rates; Distance; fluvial geomorphology; Foreland basin; River level, relative; river morphometrics; See description in dataset comment; StRATEGy; StRATEGy international research training group; water chemistry Relative elevation data was extracted from the map of residual topography over 25-40 km swaths extending from the Rio Bermejo channel centerline. We quantified the superelevation and incision of the Rio Bermejo relative to the surrounding topography by making a residual elevation map (sensu Cohen et al. (2015, doi:10.1130/2015.1212(16); McGlue et al. (2016, doi:10.2110/jsr.2016.82)). We created a series of 1 km wide swaths set perpendicular to the Rio Bermejo flow direction and extracted the minimum elevation of the active Rio Bermejo channel within each swath using the TanDEM-X DEM. Variability in DEM values for water surfaces created ~2-4 m noise in elevation values of the active channel which we smoothed by fitting a 4th order polynomial to the extracted active channel elevations to estimate the downstream change in elevation. We subtracted the polynomial fit from the DEM to yield a DEM that was de-trended from the Rio Bermejo channel slope, with values representing the local relief between the active channel and the surrounding terrain. |
| title | Relative elevation of the Rio Bermejo with respect to its floodplain |
| topic | Argentina; channel migration rates; Distance; fluvial geomorphology; Foreland basin; River level, relative; river morphometrics; See description in dataset comment; StRATEGy; StRATEGy international research training group; water chemistry |
| url | https://doi.org/10.1594/PANGAEA.959937 |