Shuttle Radar Topography Mission: an innovative approach to shuttle orbital control

Foni, A.; Seal, David

doi:10.1016/s0094-5765(03)00227-3

Cited by 13 publications

(8 citation statements)

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“…The Shuttle Radar Topography Mission (SRTM) 3-arc second DEM is the result of a collaborative effort by the National Aeronautics and Space Administration (NASA), the National Imagery and Mapping Agency (NIMA), the German space agency, and Italian space agency (Rabus et al, 2003;Foni and Seal, 2004;van Zyl, 2001). The mission was launched on 11 February 2000 aboard the Space Shuttle Endeavour.…”

Section: Shuttle Radar Topography Mission (Srtm) 3-arc Second (90 M) Demmentioning

confidence: 99%

“…Data were collected using two interferometers, C-band (American) and X-band (German) systems, at 1-arc second (30 m) (Foni and Seal, 2004;Rabus et al, 2003;van Zyl, 2001). The absolute vertical and horizontal accuracy of the data collected was reported to be ±16 m and ± 20 m (Kaab, 2005;Kellndorfer et al, 2004;Miliaresis and Paraschou, 2005;Rabus et al, 2003).…”

Section: Shuttle Radar Topography Mission (Srtm) 3-arc Second (90 M) Demmentioning

confidence: 99%

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A comparison of SRTM and high‐resolution digital elevation models and their use in catchment geomorphology and hydrology: Australian examples

Hancock

Martínez

Evans

et al. 2006

Earth Surf Processes Landf

102

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The recently released Shuttle Radar Topography Mission (SRTM) 3-arc second digital elevation data set provides a complete global coverage of the Earth's land surface. In this paper we examine the SRTM data for three catchments in Australia over a range of climates, geology and resultant geomorphology. To test this new data set the SRTM data are compared with high resolution digital elevation models. We use basic hydrological and geomorphological statistics and descriptors such as the area-slope relationship, cumulative area distribution and hypsometric curve, along with Strahler and networking statistics. The above measures describe the surface morphology of a catchment, therefore integrating catchment geology, climate and vegetation. The SRTM data were also assessed as input into the SIBERIA landscape evolution and soil erosion model as were runoff properties, using a wetness index. The results demonstrate that the 90 m SRTM data provide a poor catchment representation. Hillslopes appear as a linked set of facets and display little of the complex curvature that is observed in high resolution data. While catchment area-slope and areaelevation (hypsometry) properties are largely correct, catchment area, relief and shape (as measured by the width function) are poorly captured by the SRTM data. Catchment networking statistics are also variable. The large grid size of the SRTM data also results in incorrect drainage network patterns and different runoff properties. Consequently, care must be used for quantitative assessment of catchment hydrology and geomorphology, as in all cases SRTM-derived catchment area is incorrect and smaller digital elevation grid sizes are required for accurate catchment-wide assessment. While only a limited number of catchments have been examined, we believe our findings are applicable to other areas. © Crown Figure 1. Tin Camp Creek catchment with a high resolution 10 m by 10 m DEM (top), regridded 90 m by 90 m DEM (middle), and 90 m by 90 m SRTM DEM (bottom). is located in the wet/dry tropics region and has a climate very similar to Tin Camp Creek (Saynor et al., 2004). The catchment is located on the Arnhem Land sandstone plateau and flows to the Magela Creek floodplain. In this study we examine a major tributary of Swift Creek -East Tributary. The upper reaches of the study catchment flow through a sandstone-bedrock-confined channel on the plateau. The catchment then flows onto a wooded lowland Digital elevation models in catchment geomorphology and hydrology 1397 Figure 2. Swift Creek catchment with high resolution 20 m by 20 m DEM (top), regridded 90 m by 90 m DEM (middle), and 90 m by 90 m SRTM DEM (bottom). The 10 m grid digital elevation model for Tin Camp Creek displays well-rounded hillslope of regular curvature and hillslope length over the entire domain, and is well dissected by a regularly spaced drainage network (Figure 1). Digital elevation models in catchment geomorphology and hydrology 1401 Figure 4. Area-slope relationship for Tin Camp Creek (top), Swift Creek (middle) an...

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Section: Shuttle Radar Topography Mission (Srtm) 3-arc Second (90 M) Demmentioning

confidence: 99%

Section: Shuttle Radar Topography Mission (Srtm) 3-arc Second (90 M) Demmentioning

confidence: 99%

A comparison of SRTM and high‐resolution digital elevation models and their use in catchment geomorphology and hydrology: Australian examples

Hancock

Martínez

Evans

et al. 2006

Earth Surf Processes Landf

102

View full text Add to dashboard Cite

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“…X radar generated data along discrete swaths 50 km wide. These swaths offered nearly contiguous coverage at higher latitudes [ Foni and Seal , 2004].…”

Section: Introductionmentioning

confidence: 99%

The Shuttle Radar Topography Mission

Farr

Rosen

Caro

et al. 2007

Reviews of Geophysics

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6,322

3,779

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The Shuttle Radar Topography Mission produced the most complete, highest‐resolution digital elevation model of the Earth. The project was a joint endeavor of NASA, the National Geospatial‐Intelligence Agency, and the German and Italian Space Agencies and flew in February 2000. It used dual radar antennas to acquire interferometric radar data, processed to digital topographic data at 1 arc sec resolution. Details of the development, flight operations, data processing, and products are provided for users of this revolutionary data set.

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“…Digital elevation models can be created by a variety of processes, from field-based surveying, manual photogrammetry and digital photogrammetry (Fryer et al, 1994) through to the more recent advances in land surface measurement such as LIDAR and InSAR (which can provide reliable digital elevation models at grid resolutions of centimetres) (Smith, 2002) and the Shuttle Radar Topography Mission (SRTM) 3-arc second digital elevation model which covers the entire Earth surface (Rabus et al, 2003;Foni and Seal, 2004;van Zyl, 2001).…”

Section: Introductionmentioning

confidence: 99%

The impact of different gridding methods on catchment geomorphology and soil erosion over long timescales using a landscape evolution model

Hancock

2006

Earth Surf Processes Landf

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Many digital elevation models are gridded from irregularly spaced data. This study examines differences in catchment geomorphology and hydrology as a result of kriging and Delaunay triangulation gridding methods. Both methods have been widely used as tools for placing irregularly spaced data onto a regular grid. In the past, numerical modelling has been performed with little assessment of model input variability and the variability produced by different gridding methods has not been fully assessed. Given the importance of the impact of digital elevation model error and potential impact on model output, little work has been done to understand the impact of this type of potential error. Examination of the different catchment realizations demonstrates that when using kriging (point or block) or Delaunay triangulation there are subtle differences in catchment area and elevation as well as networking properties. Subtle differences also exist in hillslope profile. Nevertheless, when comparing catchment descriptors such as the hypsometric curve, area-slope relationship and cumulative area distribution there is little hydrological and geomorphological difference between these catchments. Further, when these digital elevation models are used as landscape input in a long-term landscape evolution model (i.e. SIBERIA) there is little geomorphological difference or hydrological difference between the two digital elevation models after a 50 000 year modelled period. Consequently either method is appropriate for the study catchment. These findings provide confidence in the conversion of irregularly spaced data onto a regular grid using kriging or Delaunay triangulation and that either method can be used.

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Shuttle Radar Topography Mission: an innovative approach to shuttle orbital control

Cited by 13 publications

References 1 publication

A comparison of SRTM and high‐resolution digital elevation models and their use in catchment geomorphology and hydrology: Australian examples

A comparison of SRTM and high‐resolution digital elevation models and their use in catchment geomorphology and hydrology: Australian examples

The Shuttle Radar Topography Mission

The impact of different gridding methods on catchment geomorphology and soil erosion over long timescales using a landscape evolution model

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