Investigating error structure of shuttle radar topography mission elevation data product

Bęcek, Kazimierz

doi:10.1029/2008gl034592

Cited by 35 publications

(38 citation statements)

References 15 publications

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“…At present, its water level is at 8.0 ± 1.44 m a.s.l. (elevation deduced from the SRTM waterbody dataset with a mean local instrumental error of 1.44 m according to Becek, 2008). Several small streams running down the western slope of the Cordillera de Nahuelbuta are discharging into the lake.…”

Section: Lago Lanalhuementioning

confidence: 99%

Forearc uplift rates deduced from sediment cores of two coastal lakes in south-central Chile

et al. 2010

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The present paper introduces a new approach for deriving information about local forearc tectonics and related uplift rates based on the study of lake sediments. We investigated two coastal lakes at the south-central Chile margin, lakes Lanalhue and Lleu Lleu, located south of the Arauco Peninsula (38°S). Both lakes developed within the valleys of ancient rivers that once drained to the Pacific Ocean, being subsequently dammed by rising sills in the late Pleistocene/early Holocene. Seismic profiling and sedimentological analyses of cores from both lakes revealed similar successions consisting of marine to brackish sediments covered by lacustrine deposits. Radiocarbon dating indicates that the marine-lacustrine transition occurred at 8 ka and 8.15 ka, respectively. The correlation of this transition with global sea-level curves allowed the calculation of local uplift rates for the Holocene. Uplift rates for the lake basins amount to 0.42 ± 0.71 and 0.49 ± 0.44 mm/a, respectively, which are consistent with rates determined from a late Pleistocene marine terrace in the area. However, conspicuously higher, though likely transient, vertical movements at 8.83 ± 2.7 mm/a and 11.36 ±1.77 mm/a, respectively, were calculated for the sills that block both lakes nowadays. These barriers are interpreted to be the surface expression of a blind reverse fault associated to the Morguilla fault system, a seismically-active structure that controls uplift and folding along the adjacent Arauco Peninsula.

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Section: Lago Lanalhuementioning

confidence: 99%

Forearc uplift rates deduced from sediment cores of two coastal lakes in south-central Chile

et al. 2010

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“…A recently obtained SRTM1 dataset (Shuttle Radar Topography Mission; Rabus et al, 2003) is available for the entire Lake Turkana area. This DEM is produced by radar interferometry with 1 arcsec (approximately 30 m) horizontal grid spacing and provides a maximum 5 m absolute vertical error (Becek, 2008;Garcin et al, 2009). In addition, high-resolution (< 1 m) PLEIADES and (5 m) SPOT 5 images were used to focus on selected areas.…”

Section: Methodsmentioning

confidence: 99%

Stepwise drying of Lake Turkana at the end of the African Humid Period: a forced regression modulated by solar activity variations?

Nutz¹,

Schuster²

2016

Solid Earth

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Abstract. Although the timing of the termination of the African Humid Period (AHP) is now relatively well established, the modes and controlling factors of this drying are still debated. Here, through a geomorphological approach, we characterize the regression of Lake Turkana at the end of the AHP. We show that lake level fall during this period was not continuous but rather stepwise and consisted of five episodes of rapid lake level fall separated by episodes marked by slower rates of lake level fall. Whereas the overall regressive trend reflects a decrease in regional precipitations linked to the gradual reduction in Northern Hemisphere summer insolation, itself controlled by orbital precession, we focus discussion on the origin of the five periods of accelerated lake level fall. We propose that these periods are due to temporary reductions in rainfall across the Lake Turkana area associated with repeated westward displacement of the Congo Air Boundary (CAB) during solar activity minima.

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“…All investigations clearly indicated that the vertical accuracy of the SRTM data was significantly higher than required by the SRTM project design. The SRTM-3″ was also investigated using the RWYM [Becek 2008[Becek , 2014. The instrument-induced error of the SRTM-3″ was estimated at 1.55 m [Becek 2008] and 2.2 m [Becek 2014] (1 sigma root-mean-square error [RMSE]).…”

Section: Previous Studies On the Vertical Accuracy Of The Srtmmentioning

confidence: 99%

“…In this paper, we show the results of an investigation into the vertical accuracy of the SRTM-1″ model over the territory of the Republic of Poland using a relatively new method: the runway method (RWYM) [Becek 2008]. The RWYM uses airport runways as elevation reference features for several reasons, including the public domain availability of runway elevation data, their strictly observed technical parameters, their smooth and uniform surfaces and their almost ideally flat (i.e., horizontal) orientation.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the Vertical Accuracy of SRTM-1″ Data Over the Territory of Poland Using the Runway Method

Akgul

Bęcek

Grossek

2017

GLL

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SummaryThe aim of this project was to estimate the accuracy of the Shuttle Radar Topography Mission (SRTM) digital elevation model over the territory of the Republic of Poland, using the centreline cross-sections of runways as reference data. This method is known as the runway method. The statistical investigations were carried out based on the height differences between the SRTM and the reference data. For this purpose, 22 sections of the SRTM with 1 arcsecond of spatial resolution (SRTM-1″) and profiles of 30 runways were used. Data processing was performed using ArcGIS (Esri) software package. The study found that the SRTM-1″ had a -3.65 m magnitude elevation bias. The standard deviation and root-mean-square error (RMSE) of the elevation differences between the SRTM and the reference data reached the level of 1.88 m and 4.14 m, respectively. The obtained results are consistent with the investigations of the SRTM-3″ model conducted by other authors for the area of Poland and other countries. Overall, it can be confirmed that the SRTM-3″ model performs significantly better over flat areas than the SRTM-1″ in terms of RMSE of the vertical accuracy.

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Investigating error structure of shuttle radar topography mission elevation data product

Cited by 35 publications

References 15 publications

Forearc uplift rates deduced from sediment cores of two coastal lakes in south-central Chile

Forearc uplift rates deduced from sediment cores of two coastal lakes in south-central Chile

Stepwise drying of Lake Turkana at the end of the African Humid Period: a forced regression modulated by solar activity variations?

Assessment of the Vertical Accuracy of SRTM-1″ Data Over the Territory of Poland Using the Runway Method

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