Prevención de Desastres (CENAPRED), mediante visitas de campo y súbitas en zonas rurales, con arrastre de sedimentos”, en Atlas Nacional de Riesgos. Distribución de población: 85% urbana y 15% rural; a nivel nacional el dato es de 76% y 24% respectivamente. Atlas Nacional de Riesgos. Distribución de población: 66% urbana y 34% rural; a nivel nacional el dato es de 76 y 24% respectivamente. Atlas Nacional de Riesgos.
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Atlas Nacional De Riesgos
Spatially distributed storm runoff depth estimation using Landsat images and GIS. Environmental monitoring and assessment64 1 Conclusions and recommendations on flood-risk management are drawn in the final part of this article. The change in the frequency of heavy rainfall and a higher vulnerability of watersheds to intense rainfall have increased the risk dde flooding in various parts of central southern Mexico.
The number of floods Last forty years is higher in regions where physical vulnerability, related to the local orography and the presence of rivers, results in larger runoff. However, there are no adequate data to quantify it, and thus it is not considered in this work Clark and Wilcock, The vulnerability index increased in most regions between andalthough it decreased in some areas Fig.
Agrociencia43 5 Flood risk iresgos flood management. Natural disasters should be examined within a risk-perspective framework where both natural hazards and vulnerability are considered.
Over the northern part of Mexico, floods tend to be more frequent during September, once the soil is saturated. Dots correspond to estimates of accumulated deforested areas in Mexico km 2 between and Changes in land cover alter nzcional HSG-NC characteristics and the regional vulnerability nackonal intense rainfall by increasing runoff. The municipalities most affected are Chilpancingo and Acapulco, where much of the population of the state of Guerrero lives.
Journal of Climate12 6 This is an open-access article distributed under the terms of the Creative Commons Attribution License. For instance, cenaprev increased amount of sediments in the riverbeds or the actual soil moisture conditions prior to the flood may contribute to make a region more vulnerable iresgos river flooding. It would also be adequate to include the effect of sediments on riverbeds as a vulnerability factor, since it results in a lower streamflow capacity. DesInventar does not provide an actual account of the physical characteristics of floods, but serves as a flood-activity indicator.
The slope of the terrain influences the amount of runoff and flood-prone areas.
Vulnerability and Exposure in Developed and Developing Countries: When cenappred activity is calculated on an annual basis, the associated vulnerability varies gradually following a logarithmic function, as deforestation and land-cover changes progress Fig. Increased watershed vulnerability due to land-cover changes is the primary factor leading to more floods, particularly over south-central Mexico.
Atlas Nacional De Riesgos
INEGI, and Furthermore, the dynamic character of risk may be related to disaster activity. In particular, the present analysis focuses on how the degradation of basins due to deforestation increases the risk of flooding when heavy rainfall occur.
Modeling runoff nacionwl to land cover and rainfall spatial variability in semi-arid watersheds.
The human cost of poor preparation for disasters. Direct runoff, Q, as a function of CN was calculated in the present study for rainfall values larger than P The number of events when precipitation was above mm in 3 days was used as a hazard index and was obtained from the records of climatological stations in those places. Changes in precipitation with climate change.
AtmospheresD Rapid urbanization and induced flood risk in Noida, India. Consultado el 30 de junio de en Consultado el 30 de junio de en http: Climate Research47 Computers and Electronics in Agriculture37 1 Land-use cover data were used to determine the characteristics of hydrological soil groups.
Floods in Tabasco, Mexico: It can be described in terms of physical, social and economical factors. In general, they result from an intense hydrological cycle and increased human activities that involve changes in the environment. Climate change adaptation and vulnerability assessment of water resources systems in developing countries: Therefore, a diagnosis of the major causes of this type of disaster should be determined, and a risk management strategy should be implemented nacoinal the social, economic and environmental costs of floods are to be reduced.
Cuenca model del Sistema serrano de La Venta Argentina. Intwo flood events were reported in this location even when the hazard activity was low.
April 17, ; Accepted: One may even consider critical risk naciional for cenapfed probability of flood to be high, i. On the other hand, the vulnerability to heavy rainfall depends on cenaprd physical conditions of the basins.
Environment and Urbanization22 1 Only in a few places floods tend to cemapred, as in the state of Baja California or in central Chihuahua.
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As a multifactorial element, vulnerability is a ceenapred modulating factor of the risk dynamics to intense rainfall. Journal of Hydrology1 In Acapulco, vulnerability and hazard increased in recent years, and hence the frequency of flood events Fig.
The compactness index Ci is calculated through the empirical relationship:. In this study, vulnerability is derived from three main factors: For instance, the trend in the number of floods should be recorded by the estimates of risk for recent decades.
The use of indicators that nzcional the vulnerability factor is common practice e.