Geomorphic Change Analysis Using ASTER and SRTM Digital Elevation Models in Central Massachusetts, USA

Blanchard, Samuel D.; Rogan, John; Woodcock, Deborah

doi:10.2747/1548-1603.47.1.1

Cited by 31 publications

(16 citation statements)

References 47 publications

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“…The full potential of ASTER DEM data for geomorphological research is still being explored but they have been effective, for example, in assessment of glacier flow velocities and volume change (Kääb, ; Miller et al ., ) and flood modelling (Tarekegn et al ., ). It has also been demonstrated to be a useful complement to other sources of terrain data such as that derived from aerial photographs, the Shuttle Radar Topography Mission (SRTM) and maps (Kääb, ; Miller et al ., ; Blanchard et al ., ).…”

Section: Methodsmentioning

confidence: 99%

Morphometric analysis of aeolian bedforms in the Namib Sand Sea using ASTER data

Bullard

White

Livingstone

2011

Earth Surf Processes Landf

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The ASTER Global Digital Elevation Model (GDEM) has made elevation data at 30 m spatial resolution freely available, enabling reinvestigation of morphometric relationships derived from limited field data using much larger sample sizes. These data are used to analyse a range of morphometric relationships derived for dunes (between dune height, spacing, and equivalent sand thickness) in the Namib Sand Sea, which was chosen because there are a number of extant studies that could be used for comparison with the results. The relative accuracy of GDEM for capturing dune height and shape was tested against multiple individual ASTER DEM scenes and against field surveys, highlighting the smoothing of the dune crest and resultant underestimation of dune height, and the omission of the smallest dunes, because of the 30 m sampling of ASTER DEM products. It is demonstrated that morphometric relationships derived from GDEM data are broadly comparable with relationships derived by previous methods, across a range of different dune types. The data confirm patterns of dune height, spacing and equivalent sand thickness mapped previously in the Namib Sand Sea, but add new detail to these patterns.

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Section: Methodsmentioning

confidence: 99%

Morphometric analysis of aeolian bedforms in the Namib Sand Sea using ASTER data

Bullard

White

Livingstone

2011

Earth Surf Processes Landf

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“…Using the kilometer-scale, significant topographic information of the area under investigation can be obtained 97 . By calculating hypsometric integral of each square, a regular distribution of values that is independent of drainage area and basin geometry is produced.…”

Section: Methodsmentioning

confidence: 99%

Landscape response to progressive tectonic and climatic forcing in NW Borneo: Implications for geological and geomorphic controls on flood hazard

Menier

Mathew

Pubellier

et al. 2017

Sci Rep

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Empirical models have simulated the consequences of uplift and orographic-precipitation on the evolution of orogens whereas the effects of these forcings on ridgelines and consequent topography of natural landscapes remain equivocal. Here we demonstrate the feedback of a terrestrial landscape in NW Borneo subject to uplift and precipitation gradient owing to orographic effect, and leading to less-predictable flooding and irreversible damages to life and property. Disequilibrium in a large catchment recording the lowest rainfall rates in Borneo, and adjacent drainage basins as determined through χ, a proxy for steady–state channel elevation, is shown to result in dynamic migration of water divide from the windward-side of the orogen towards the leeward-side to attain equilibrium. Loss of drainage area in the leeward-side reduces erosion rates with progressive shortening resulting in an unstable landscape with tectonic uplift, gravity faults and debris flows. 14C dating of exhumed cut-and-fill terraces reveal a Mid–Pleistocene age, suggesting tectonic events in the trend of exhumation rates (>7 mm a−1) estimated by thermochronology, and confirmed by morphotectonic and sedimentological analyses. Our study suggests that divide migration leads to lowered erosion rates, channel narrowing, and sediment accretion in intermontane basins on the leeward-side ultimately resulting in enhanced flooding.

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“…Thus, using a kilometric-scale, we can obtain significant topographic information of the area under investigation (Blanchard et al, 2010). We used this technique due to the large surface area of the studied basins and using small-scale grid cells can aid in the identification of spatial distribution of zones having rapid elevation variations.…”

Section: Mean Elevation−minimum Elevation Maximum Elevation−minimum Ementioning

confidence: 99%

Active tectonic deformation along rejuvenated faults in tropical Borneo: Inferences obtained from tectono-geomorphic evaluation

et al. 2016

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Geomorphic Change Analysis Using ASTER and SRTM Digital Elevation Models in Central Massachusetts, USA

Cited by 31 publications

References 47 publications

Morphometric analysis of aeolian bedforms in the Namib Sand Sea using ASTER data

Morphometric analysis of aeolian bedforms in the Namib Sand Sea using ASTER data

Landscape response to progressive tectonic and climatic forcing in NW Borneo: Implications for geological and geomorphic controls on flood hazard

Active tectonic deformation along rejuvenated faults in tropical Borneo: Inferences obtained from tectono-geomorphic evaluation

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