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Constraining Spatial Variability in Erosion Rates

Constraining Spatial Variability in Erosion Rates. Erosion Indices: -Topography (SRTM, ASTER, DTED, GTOPO30, LANDSAT) -Climate (TRMM, Rain Gages, Stage Recorders) Cosmogenic Isotopes: -Point Measurements -Whole Basin Measurements. Erosion Indices:

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Constraining Spatial Variability in Erosion Rates

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  1. Constraining Spatial Variability in Erosion Rates

  2. Erosion Indices: -Topography (SRTM, ASTER, DTED, GTOPO30, LANDSAT) -Climate (TRMM, Rain Gages, Stage Recorders) Cosmogenic Isotopes: -Point Measurements -Whole Basin Measurements

  3. Erosion Indices: -Topography (SRTM, ASTER, DTED, GTOPO30, LANDSAT) -Climate (TRMM, Rain Gages, Stage Recorders) Cosmogenic Isotopes: -Point Measurements -Whole Basin Measurements

  4. Fluvial Incision ~ power (Kirby and Whipple, 2001) ~ shear stress (Lave and Avouac, 2001)

  5. Fluvial Incision ~ power (Kirby and Whipple, 2001) ~ shear stress (Lave and Avouac, 2001) Need: Discharge (TRMM)

  6. Fluvial Incision ~ power (Kirby and Whipple, 2001) ~ shear stress (Lave and Avouac, 2001) Need: Discharge (TRMM) River Slope (DTED (90m); ASTER (30m))

  7. Fluvial Incision ~ power (Kirby and Whipple, 2001) ~ shear stress (Lave and Avouac, 2001) Need: Discharge (TRMM) River Slope (DTED (90m); ASTER (30m)) Channel Width (LANDSAT)

  8. Power (watts/m^2)

  9. Power (watts/m^2)

  10. Distributed Antiformal Uplift Across Knickpoint, no major • fault breaks • -Close Spatial Correspondence Between Zircon Helium Age • and Stream Power

  11. Erosion Indices: -Topography (SRTM, ASTER, DTED, GTOPO30, LANDSAT) -Climate (TRMM, Rain Gages, Stage Recorders) Cosmogenic Isotopes: -Point Measurements -Whole Basin Measurements

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