Stable isotopes (2H, 18O and 13C) in groundwaters from the northwestern portion of the Guarani Aquifer System (Brazil)

2010 ◽  
Vol 18 (6) ◽  
pp. 1497-1513 ◽  
Author(s):  
Didier Gastmans ◽  
Hung Kiang Chang ◽  
Ian Hutcheon
Keyword(s):  
Stable Isotopes ◽  
Aquifer System ◽  
Guarani Aquifer

scholarly journals Fluoride in the Serra Geral Aquifer System: Source Evaluation Using Stable Isotopes and Principal Component Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Arthur Schmidt Nanni ◽  
Ari Roisenberg ◽  
Maria Helena Bezerra Maia de Hollanda ◽  
Maria Paula Casagrande Marimon ◽  
Antonio Pedro Viero ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Stable Isotopes ◽  
Principal Component ◽  
Component Analysis ◽  
Water Infiltration ◽  
Water Mixture ◽  
Aquifer System ◽  
Four Component Model ◽  
Geological Unit ◽  
Guarani Aquifer

Groundwater with anomalous fluoride content and water mixture patterns were studied in the fractured Serra Geral Aquifer System, a basaltic to rhyolitic geological unit, using a principal component analysis interpretation of groundwater chemical data from 309 deep wells distributed in the Rio Grande do Sul State, Southern Brazil. A four-component model that explains 81% of the total variance in the Principal Component Analysis is suggested. Six hydrochemical groups were identified. δ18O and δ2H were analyzed in 28 Serra Geral Aquifer System samples in order to identify stable isotopes patterns and make comparisons with data from the Guarani Aquifer System and meteoric waters. The results demonstrated a complex water mixture between the Serra Geral Aquifer System and the Guarani Aquifer System, with meteoric recharge and ascending water infiltration through an intensive tectonic fracturing.

scholarly journals National Sovereignty Versus Transboundary Water Cooperation: Can You See International Law Reflected in the Water?

AJIL Unbound ◽  
2021 ◽  
Vol 115 ◽  
pp. 178-182
Author(s):  
Francesco Sindico
Keyword(s):  
International Law ◽  
Transboundary Water ◽  
National Sovereignty ◽  
Customary International Law ◽  
Aquifer System ◽  
Water Cooperation ◽  
Guarani Aquifer ◽  
International Water Law ◽  
Downstream Flow ◽  
Transboundary Water Cooperation

Could Turkey dam the Tigris and Euphrates and deprive its downstream neighbors of vital water resources? Could Brazil over-pump the Guarani Aquifer System to the detriment of the other aquifer states? Could Egypt put pressure on upstream Nile states and prevent them from developing river related infrastructure that might limit downstream flow? International law in the field of transboundary water cooperation has evolved and would appear to condemn unilateral practices such as the ones suggested above. However, hydro politics and the lack of reception of international water law instruments by many countries sometimes make it difficult to see international law properly reflected in the management of major rivers, lakes and aquifers around the world. In this essay, I first highlight what international law dictates when it comes to the tension between national sovereignty and transboundary water cooperation. I then explore how this tension plays out in the three examples noted above. Due to limited acceptance of the existing international, bilateral, or regional legal instruments, the resolution of the tension between national sovereignty and transboundary water cooperation will often be left to customary international law.

Guarani aquifer system (GAS): geothermal spa balneology assessment

2020 ◽  
Vol 35 (1) ◽  
pp. 33-59
Author(s):  
FT Lazzerini ◽  
PSC da Silva
Keyword(s):  
Aquifer System ◽  
Guarani Aquifer

scholarly journals Correlações Estratigráficas Conflitantes no Limite Permo-Triássico no Sul da Bacia do Paraná: O Contato Entre Duas Seqüências e Implicações na Configuração Espacial do Aqüífero Guarani

2008 ◽  
Vol 35 (2) ◽  
pp. 115 ◽  
Author(s):  
ANA PAULA SOARES ◽  
PAULO CÉSAR SOARES ◽  
MICHAEL HOLZ
Keyword(s):  
Late Permian ◽  
The South ◽  
The West ◽  
Aquifer System ◽  
Semiarid Environment ◽  
Fluvial Deposits ◽  
Lacustrine Deposits ◽  
Cycle System ◽  
Guarani Aquifer ◽  
Santa Maria

The stratigraphic register of the Guarani aquifer system in the Parana basin involves deposits of the Triassic to the Cretaceous. The register in the south region differs from the other areas of the basin, causing confusion in the stratigraphic conception of the Pirambóia Formation. This formation is correlated with paleozoics deposits whose register is only found in the south region of the basin. The correlation that intends for these units has implications in the space configuration and distribution of the aquifer. The space relationships of this record are reinterpreted. The Rio do Rasto Formation, of late Permian age record alluvial plain system, in a progressive semiarid environment, including dune fields; in the southern part of the basin these dune field are extensive and is represented by thick record, covered again by extensive fluvial deposits of the Sanga do Cabral Fm at the PT boundary. The unconformity above records a generalized uplift, associated to the Gondwanides orogeny and to climatic changes, accompanied by progressive supply and sin-sedimentary deformation. Above the unconformity, aeolian and fluvial deposits of the Mesozoic sequence present division organized in 3 blocks: West, Central and East. Three depositional cycles were identified. The first, unconformable over Permian rocks, occurs only in the Central Block, with fluvial and lacustrine deposits filling small rifts (Santa Maria and Caturrita fms). The second cycle extends over the whole basin with fluvial deposits and humid aeolian (formations Guará and Pirambóia); the fluvial and aeolian Guará Fm lies unconformable over Sanga do Cabral Fm in the West Block. In the East Block the aeolian and fluvial unit identified as Pirambóia Fm correlative; it occurs unconformable over the Rio do Rasto Fm, omitting the Sanga do Cabral Fm and the rocks of the first cycle. The third cycle system tract records super arid dune fields of the Botucatu Formation. The Late Permian aeolian facies of the Sanga do Cabral Fm, previously called by some authors as the Pirambóia Fm, doesn't present interfingers and doesn't constitute a hydrostratigraphic unit connected to the Guarani System.

Diplomatic Advances and Setbacks of the Guarani Aquifer System in South America

2020 ◽  
Vol 114 ◽  
pp. 384-393
Author(s):  
Ricardo Hirata ◽  
Roberto Eduardo Kirchheim ◽  
Alberto Manganelli
Keyword(s):  
South America ◽  
Aquifer System ◽  
Guarani Aquifer

Evaluation of remotely sensed data for estimating recharge to an outcrop zone of the Guarani Aquifer System (South America)

2015 ◽  
Vol 23 (5) ◽  
pp. 961-969 ◽  
Author(s):  
Murilo Lucas ◽  
Paulo T. S. Oliveira ◽  
Davi C. D. Melo ◽  
Edson Wendland
Keyword(s):  
South America ◽  
Remotely Sensed ◽  
Remotely Sensed Data ◽  
Aquifer System ◽  
Guarani Aquifer

scholarly journals The study of the interactions between Sava River and Zagreb aquifer system (Croatia) using water stable isotopes

2019 ◽  
Vol 98 ◽  
pp. 12017
Author(s):  
Jelena Parlov ◽  
Zoran Kovač ◽  
Jadranka Barešić
Keyword(s):  
Stable Isotopes ◽  
Surface Water ◽  
Spatial Variability ◽  
River Water ◽  
Aquifer System ◽  
Protection Zones ◽  
Sava River ◽  
Water Fractions ◽  
Definition Of ◽  
The Sava River

Water stable isotopes were used to investigate hydrological pathways and interactions between surface water and groundwater in the Zagreb aquifer system (Croatia). δ2H and δ18O values indicate a spatial variability of the influence of individual groundwater sources inside the aquifer – local precipitation and the Sava River water. Fractions of surface water in groundwater strongly depend on fluctuations of the river water level and less on the distance from the Sava River. These data extend our understanding of groundwater flow in the Zagreb aquifer system, interactions between Sava River water, local precipitation and groundwater. The results of the research allow more precise monitoring plans and definition of the sanitary protection zones of the well fields in the future.

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