کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4685166 1635471 2012 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fractal properties of landforms in the Ordos Block and surrounding areas, China
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Fractal properties of landforms in the Ordos Block and surrounding areas, China
چکیده انگلیسی

This paper investigates the fractal properties of landforms in the Ordos Block and surrounding areas within China and discusses their geological and geomorphological implications. The Ordos Block is tectonically stable, but the surrounding areas are much more active and are affected by shear-extensional structures. We utilized the variogram method and the cellular fractal model to estimate parameters such as the fractal dimension (D), ordinate intercept (γ), and range (R) from the SRTM3 DEM using a moving window operation. We suggest that the fractal dimension reflects the frequency of variation in elevation, while the ordinate intercept reflects the amplitude of relief. The fractal properties range from 90 m to 30 km. Geomorphological zones can be delineated using the fractal dimension and ordinate intercept. These zones are consistent with known qualitative types of topography. Some basins are characterized by high fractal dimensions and low ordinate intercepts, in contrast to mountainous areas with low fractal dimensions and high ordinate intercepts. Other areas such as the Loess Plateau and deserts also have unique values of fractal properties. The effects of geological and geomorphological processes on the fractal properties are also discussed.


► The fractal parameters of the Ordors block and its sorrounding area were estimated.
► Geomorphological zones were identified quantitatively using the fractal parameters.
► We have explored the goemorphological significance of the fractal parameters.
► The relation was discussed between fractal parameters and tectonics.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Geomorphology - Volumes 175–176, 15 November 2012, Pages 151–162
نویسندگان
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