Implication of active structure in Ebinur Lake basin by stream length-gradient index and Hack profile

Liu, Xiaoli; Xue, Lei; Liu, Zhumei; Chen, Xiaolin; Li, Shengle

doi:10.1109/igarss.2016.7730584

Cited by 1 publication

(1 citation statement)

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“…The value of upstream reach is small, but the downstream reach is obviously increased. A large number of studies have shown that the concavity and convexity of Hack section is related to the uplift rate, and profile in the area of high lifting rate is convex (Merritts and Vincent, 1989;Marple and Talwani, 1993;Liu et al, 2016;Pirasteh et al, 2018). It can be seen from Figure 5 that all the Hack profiles are above the steady-state channel profile, showing the overall convex shape, which indicates that the Daxihe River Basin is affected by the structure and the tectonic activity is strong.…”

Section: Resultsmentioning

confidence: 92%

Neotectonic Significance Revealed by Stream Length – Gradient Index of the Daxi River Basin in the Southern Margin of Ordos, China

Han

Liu

2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Since the late Cenozoic era, due to the impact of the Indo-Eurasian plate collision and the northeasterward compression of the Tibetan Plateau, a series of extensional sub-basins and tectonic belts have been formed at the periphery of the Ordos block. Watershed geomorphology plays an important role in studying the formation of rock uplift and river erosion, and are recording the surface evidence on landforms evolution. In this paper, twenty-eight sub-basins and tributaries around Daxihe River, locating at the southern margin of Ordos, were extracted from SRTM1 DEM data. Combined with Hack profile and related river parameters, the tectonic and geomorphic morphology were evaluated synthetically. The results show that (1) The mean SL of this area is 93.9, indicating that the tectonic activities are strong in Daxihe River Basin; (2) The SL values of the northern and southern are 58.9 -152 and 66 -137.4, respectively, showing that the uplift rate of eastern margin larger than the southern margin; (3) There are positive power functions between K and drainage area, also between landform relief and slope. This study plays an auxiliary role in regional geological background, structural activity analysis and disaster prediction.This contribution has been peer-reviewed. https://doi.org/10.5194/isprs-archives-XLII-3-W10-967-2020 | © Authors 2020. CC BY 4.0 License. 967This contribution has been peer-reviewed. https://doi.org/10.5194/isprs-archives-XLII-3-W10-967-2020 | © Authors 2020. CC BY 4.0 License.

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Section: Resultsmentioning

confidence: 92%