The Mexico City region has several flat plains formed on exceptionally porous (60–90%) lacustrine deposits overlying a highly productive regional aquifer. Severe land subsidence due to consolidation of the aquitard caused by aquifer exploitation resulted in restrictions pumping core City. This led large increases outlying where satellite communities are rapidly expanding. Chalco Basin is one these areas began 1950s and greatly increased 1980s. sequence area significantly thicker than...

Aquitard consolidation in the Chalco Plain is most recent of a series major land subsidence problems near Mexico City caused by leaky‐aquifer pumping and involving complex distribution basalt flows within lacustrine sequence. This study first conducted ground magnetic survey combined with lithologic logs to map extension basalts. Then it assessed evolution surface elevations updated hydraulic heads aquifer aquitard order verify accuracy previous simulations develop new predictions on...

Abstract The extensive lacustrine Chalco Plain in the southeastern part of Mexico City is underlain by an aquitard up to 300 m thick composed a layered sequence very porous (80‐90%) fine‐grained, organic‐rich Quaternary deposits, with thin horizontal interbeds volcanic sand (“Capas Duras”). overlies alluvial‐pyroclastic sediments which form highly productive regional aquifer. was shallow lake until 1940s when it drained for agricultural use and human habitation. Historic information...

To report the high incidence of lung cancer (LC) and malignant mesothelioma (MM) linked to environmental exposure erionite fibres in a rural village central Mexico.This is retrospective survey clinical mortality records from years 2000-2012, accompanied by an for nine Group-1 pleura carcinogenic agents listed International Agency Research on Cancer (IARC).Out total 45 deaths between 2000 2012, 14 correspond different neoplasms lung, at least four MM. The ages diagnosis MM were 30 54 years....

The groundwater flow and the transport of solutes contaminants in fractured media play a very important role various hydrogeological geological processes. Fractures are discontinuities that occur practically all types rocks, consolidated semi-consolidated sediments, which it has interacted with hydrological cycle at different scales space time. This article reviews 20 years research CGEO selected examples Mexico, from local to regional scales, associated 1) Gravitational Groundwater Flow...

This paper reviews the role of probability density function (PDF) choice on: (1) statistical characterization hydraulic conductivity; and (2) estimation local-scale effective conductivity. The most widely used skewed PDFs, namely, lognormal, gamma, log-gamma PDFs are included in this study. It is shown that gamma possess features render them competitive, if not advantageous, to more commonly better-known lognormal PDF in: description conductivity groundwater flow. parameter relating average...

The Independence Basin is located in a semi-arid region of Mexico, delimited predominantly by volcanic mountains. Around 30 m3/s water are extracted from regional aquifers mainly for agro-export activities, causing declines the table up to 10 m/a, increased temperature and dissolved elements that harmful health environment. Regional groundwater coupled flow heat transport under current conditions were studied on basin-wide scale (7000 km2) using three-dimensional finite-element model...

Se estima que entre el 80 y 85 % del agua se extrae de los acuíferos en México destina a producción agropecuaria y, general, existe una gestión inadecuada causa diferentes impactos al ambiente, destacando abatimiento contaminación subterránea, otros. El propósito este trabajo es cuantificar balance dinámica la zona no saturada por medio mediciones diarias parámetros meteorológicos perfiles humedad, un lote permanente sujeto prácticas conservación, Acuífero Independencia (Cuenca Alta Río La...

Abstract. Seasonality is one of the most important features Tropical Dry Forests (TDFs), then water scarcity must be overcome by perennial sources dependent groundwater flows. Groundwater recharge processes in TDFs are controlled (i) seasonal dynamics components cycle through their interaction with soil and underlying geological environment, (ii) phenological rhythms vegetation that simultaneously influence infiltration evapotranspiration. The daily hydrological a TDF grow atop fractured...

Life and infrastructure are becoming increasingly vulnerable to flooding flood-related risks along the Benue River, particularly in Adamawa catchment, with inadequate knowledge about physical factors affecting vulnerability flood-prone zones. Controlling flood involves addressing vulnerabilities communities whilst reducing enhancing resilience. This study employed geospatial analysis Analytical Hierarchy Process (AHP) method model analyse seven factors: elevation, drainage, soil type,...

Los bosques tropicales secos (BTS) son ecosistemas estacionales que se desarrollan bajo una compleja dinámica hidrológica. Se analizaron los procesos hidrológicos en tres microcuencas la costa sur del estado de Jalisco, México, las cuales sustentan un BTS conservación sobre granito fracturado, con información más 40 años su física y biótica, pero donde poco conoce el funcionamiento agua subterránea. El análisis realizó por medio de: 1) imágenes LiDAR trabajo campo, 2)...