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| Format: | Artículo científico |
| Language: | en |
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Instituto Mexicano de Tecnología del Agua
2016
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| Online Access: | https://www.redalyc.org/articulo.oa?id=353544005003 |
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Table of Contents:
- Temporal Patterns in River Flows in Basins in Northern Mexico José Návar Liliana Lizárraga-Mendiola Ciencias de la Tierra base flow droughtmagnification Negative discharge tendency direct flow and total discharge In the dry basins in northern Mexico, concern about rivers isfocused on seasonal and long-term variations in river flowsthat may be attributable to climate change, since it affects thewater supply for domestic, industrial, public and agriculturaluses. The objective of this research was to separate dailyflow components and understand the patterns in 172 timeseriescorresponding to five rivers in northern Mexico. Theheadwaters of the San Pedro, Sinaloa, Nazas-Aguanaval, SanJuan and San Fernando-Soto La Marina rivers are located inthe Sierra Madre Occidental and Oriental, and flow throughthe plains into the Pacific Ocean, the Gulf of Mexico andthe Central Plateau in northern Mexico, providing over90% of the water supply for all uses. The Rora computerprogram isolated the base and direct flows from the total.The Mann-Kendall test and the Seno S method evaluatedthe trends and magnitudes of the changes in annual andmonthly flow, monthly standard deviation, and dailymaximums and minimums for total, direct and base flows.The results found that the base and direct flows were inequilibrium for most of the rivers. Meanwhile, each one ofthe variables analyzed had statistically significant trends at40% of the hydrometric stations. Over 26% of the stationsshowed a consistent reduction in flow over time. Althoughadditional investigations are needed to quantitativelyisolate the potential sources of the variations to explain thetemporal trends, the causes can preliminarily be attributedto climate variability in combination with natural resourcemanagement practices. The effect of potential climate changecannot be excluded from these patterns. 2016 artículo científico 2007-2422 https://www.redalyc.org/articulo.oa?id=353544005003 en http://www.redalyc.org/revista.oa?id=3535 Tecnología y Ciencias del Agua application/pdf Instituto Mexicano de Tecnología del Agua Tecnología y Ciencias del Agua (México) Num.1 Vol.VII