A framework for analyzing seawater intrusion in coastal areas: An adapted GALDIT model application for Espírito Santo, Brazil

Case Studies in Chemical and Environmental Engineering, Journal Year: 2024, Volume and Issue: 10, P. 100887 - 100887

Published: Aug. 7, 2024

This article introduces the GALDITE methodology, an adaptation of GALDIT used to assess seawater intrusion in coastal aquifers. incorporates a new parameter (E) focusing on groundwater exploitation through artesian wells, previously overlooked GALDIT. The methodology evaluates vulnerability using parameters like aquifer type, hydraulic conductivity, distance coastline, and now extraction impact. Statistical validation Barreiras data confirms effectiveness enhancing model accuracy. Sensitivity analysis highlights parameter's significant influence overall assessment. results indicate that key impact zones identified include downstream regions São Mateus, Doce, Itabapoana rivers, as well municipality Vitória, highlighting applicability GALDITE. utility managing water resources, governance, guiding sustainable strategies is emphasized, particularly face increasing risks exacerbated by intensive extraction. study underscores necessity integrating into assessments for effective management.

Language: Английский

A method to describe attenuation of river contamination under peak flows: Can the public water supply from Paraopeba River finally return after the Brumadinho dam disaster?

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 949, P. 174970 - 174970

Published: July 26, 2024

Tailings dams' disasters begin a stage of river water contamination with no endpoint at first sight. But when the was formerly used for public supply and use suspended as consequence dam break, time window safe suspension lift must be anticipated to help managers. The purpose this study seek that moment in case Brumadinho disaster which occurred 2019 injected millions cubic meters iron- manganese-rich tailings into Paraopeba River, leading Belo Horizonte metropolitan region resource, until now. To accomplish proposed goal, an assemblage artificial intelligence socio-economic development models were anticipate precipitation, discharge metal concentrations (iron, manganese) 2033. Then, ratios between impacted non-impacted sites determined values representing extreme events selected further assessment. A ratio ≈1 generally indicates similarity areas or, put another way, return pre-rupture condition. Moreover, is estimated under influence peak flows, then value conditions most unfavorable hydrologic regimes, thus return. So, plotted against fitted straight line intercept-x requested time. results pointed 6.57 years after accident, while using iron contaminant indicator, or 8.71 manganese considered. Despite being relatively low-risk timeframe, should implemented phases monitored precaution potential sporadic events, dredging from continue accelerated.

Language: Английский

Protection of groundwater resources from multi-hazards: An integration of risk assessment and watershed management

Groundwater for Sustainable Development, Journal Year: 2024, Volume and Issue: 27, P. 101326 - 101326

Published: Aug. 30, 2024

Language: Английский