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author:

Lin, Siwei (Lin, Siwei.) [1] | Chen, Nan (Chen, Nan.) [2] (Scholars:陈楠)

Indexed by:

Scopus SCIE

Abstract:

Slope spectrum is an effective methodology of digital terrain analysis in geomorphology. However, some limi-tations are still encountered in the construction of the slope spectrum. E.g., the uncertainties caused by slope classification and resolution of digital elevation model (DEM) may restrict the development of slope spectrum and cause a certain spatial information loss. In this paper, a new spectrum method, defined as continuous slope cumulative frequency (CSCF) spectrum, is proposed. Compared with the slope spectrum, the CSCF spectrum does not require slope classification and combines the spatial information of all grids. Hence, it possesses richer terrain feature information and minimal spatial information loss. Meanwhile, it is more convenient to be used in different study areas without requiring heavy work of slope spectrum in determining the suitable slope classi-fication. We also found that the CSCF spectrum can be generally extracted from DEM with different resolutions, whereas the slope spectrum cannot. Experiment results show that the CSCF spectrum is an efficient geo-morphology quantitative analysis method that can quantitatively depict the spatial distribution and evolution process of the typical loess landforms from different angles. Besides, the CSCF spectrum can accurately deduce the stable slope spectrum, whereas the slope spectrum cannot deduce the CSCF spectrum, which further suggests that the previous studies in slope spectrum can be conducted on the basis of the CSCF spectrum. Furthermore, the CSCF spectrum shows well application potentials in landform classification with comparative performance to previous methods. Overall, the CSCF spectrum is an effective method in geomorphology quantitative analysis. Considering that the CSCF spectrum solves two key deficiencies in the present model of slope spectrum (slope classification and DEM resolution) and extends the application scope and concept of spectrum method, it is promising to be the research paradigm of the spectrum method in digital terrain analysis.

Keyword:

Critical area DEM Digital terrain analysis Geomorphology Slope spectrum

Community:

  • [ 1 ] [Lin, Siwei]Fuzhou Univ, Acad Digital China Fujian, Fuzhou 350108, Peoples R China
  • [ 2 ] [Chen, Nan]Fuzhou Univ, Acad Digital China Fujian, Fuzhou 350108, Peoples R China
  • [ 3 ] [Lin, Siwei]Fuzhou Univ, Key Lab Spatial Data Min & Informat Sharing, Minist Educ, Fuzhou 350116, Peoples R China
  • [ 4 ] [Chen, Nan]Fuzhou Univ, Key Lab Spatial Data Min & Informat Sharing, Minist Educ, Fuzhou 350116, Peoples R China
  • [ 5 ] [Lin, Siwei]Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210000, Peoples R China

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Source :

GEOMORPHOLOGY

ISSN: 0169-555X

Year: 2022

Volume: 415

3 . 9

JCR@2022

3 . 1 0 0

JCR@2023

ESI Discipline: GEOSCIENCES;

ESI HC Threshold:51

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 4

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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