Fig 4 - uploaded by V. Ochoa-Tejeda
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The Sierra Norte de Puebla (Mexico) is a tropical mountain frequently affected by torrential
rains induced by depressions and hurricanes. In October 1999 and 2005, intense precipitation
triggered hundreds of landslides and caused heavy human losses and material damages.
All the landslides surveyed in the field and their traces extracted from the sa...
Contexts in source publication
Context 1
... morphometric parameters as well as the relationships between each other allow defining accurately the characteristics of the different extracted traces produced in the landscape by slope movements. Only two diagrams are reported here in order to illustrate some of the characteristics of these traces. The graph width versus length (Fig. 4a) reveals that, except for two items, small landslides essentially form a dense group of linear type; the relation width/length ranges from 0.2 to 0.8 with an average of 0.55; 40 % of the traces display a relation equal or inferior to 0.5 % and 24 % of them are inferior or equal to ...
Context 2
... second landslide (symbol B in the Fig. 6) is located northwards the El Dos village; its length is equal to 480 m and the width to 90 m; the ratio width/length of this linear structure is equal to 0.18. Figure 4b establishes the existing relation between the external roughness index P c /P p and the surface S. The more the index value decreases, the more irregular will be the studied shape. The majority of the studied landslides are grouped in the zone corresponding to small landslides hav- ing an almost regular form; the external roughness index of the cluster gravity center is equal to 75. ...
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Citations
... Morphometric analysis provides a quantitative description of the characteristics of a watershed. It has been applied to mass movement classification [1], watershed prioritization for soil and water conservation [2], identification of soil erosion prone areas [3] and for flood potential mapping [4]. Analysis of area, linear, and relief morphometric parameters of a watershed also provides a better understanding of its hydrological behaviour [5]. ...
