Análisis de las variaciones espacio-temporales de los procesos geomorfológicos y los riesgos naturales asociados

Abstract

A hypothesis is tested: There is a global geomorphic change (not related to climate) manifested by an acceleration of erosion/sedimentation and frequency of hazards due to geomorphic processes. Determinations of sedimentation rates have been carried out, and data gathered, at a global scale, on sedimentation rates, frequency of natural disasters, and indicators of potential drivers (precipitations and human transformation of land). The analysis of data and comparisons and correlations carried out show a considerable intensification of geomorphic processes, especially after mid-20th century. There is no apparent relationship between rainfall changes and magnitude or trends of changes in geomorphic processes. Significant relationships are observed between changes in geomorphic processes and indicators of land transformation by human activity. It appears that an important change in geomorphic processes is one of the characteristics of the Anthropocene, and that its starting date should be the end of World War II.