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The Jarvis's march procedure

The Jarvis's march procedure

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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...

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... then possible to measure the length and width of the rectangle circumscribing the studied landslide surface and calculate its ratio. There are many different procedures that allow defining a convex zone. Among them, the Jarvis's march such as it is described by Akl and Toussaint (1978) is a simple algorithm that efficiently draws a convex contour (Fig. ...

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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]. ...