VULNERABILITY OF THE SERRA GERAL AQUIFER TO CONTAMINATION IN THE CITY OF ERECHIM
Keywords:Groudwaters, GIS, Espacialization.
The portion of the Hydrographic Region of Uruguay River situated between the Rio Grande do Sul and Santa Catarina states are being evaluated as potential of hydric resources for hydroeletric enterprises. The City of Erechim is located between the coordinates 27° 29’ 20” S; 52° 10’ 03”W and 27° 47’ 15”S; 52° 21’ 52” W, northwest region of the state, is part of the volcanic spills of the Serra Geral Formation, Fácies Paranapanema in the Paraná basin. The uses of ground waters in the Hydrografic Region of Uruguay are multiple: human, animal supplying, hydrothermal waters, irrigation, mineral water bottling. However, the risk of contamination of ground waters comes together with its growing demand, fact that indicates the necessity of this resource management. This work has as objective to evaluate and to spatialize in cartograms GOD system for evaluation of aquifer pollution vulnerability of the Serra Geral Aquifer System/SASG, forming one unconfined fissural aquifer at outcrops near surface. Of a total of 99 tubular wells registered in cadastre in the System of Ground Water Information SIAGAS/CPRM, the GOD system for evaluation ofaquifer pollution vulnerability was applied in 55 wells. The cartograms had been generated in the software 8.0 Surfer and ArcGIS 9.3, represented in the Universal System Transversa de Mercator/UTM. The GOD system for evaluation of aquifer pollution vulnerability showed 47 wells inserted in the class of average vulnerability, representing about 85.5% of the total area evaluated of 430.76 km ². The class low occupied 12.7% of the area and only 1.8% were inserted in the negligible class. The layer of variation of the potenciometric quota was between 416 and 780 meters, being observed the occurrence of high regional potenciometrics and low potenciometrics locals. The regional direction of underground flow was in the direction southeast - northeast, for the gutter of the Uruguay River. .
How to Cite
To access the DECLARATION AND TRANSFER OF COPYRIGHT AUTHOR’S DECLARATION AND COPYRIGHT LICENSE click here.
Ethical Guidelines for Journal Publication
The Ciência e Natura journal is committed to ensuring ethics in publication and quality of articles.
Conformance to standards of ethical behavior is therefore expected of all parties involved: Authors, Editors, Reviewers, and the Publisher.
Authors: Authors should present an objective discussion of the significance of research work as well as sufficient detail and references to permit others to replicate the experiments. Fraudulent or knowingly inaccurate statements constitute unethical behavior and are unacceptable. Review Articles should also be objective, comprehensive, and accurate accounts of the state of the art. The Authors should ensure that their work is entirely original works, and if the work and/or words of others have been used, this has been appropriately acknowledged. Plagiarism in all its forms constitutes unethical publishing behavior and is unacceptable. Submitting the same manuscript to more than one journal concurrently constitutes unethical publishing behavior and is unacceptable. Authors should not submit articles describing essentially the same research to more than one journal. The corresponding Author should ensure that there is a full consensus of all Co-authors in approving the final version of the paper and its submission for publication.
Editors: Editors should evaluate manuscripts exclusively on the basis of their academic merit. An Editor must not use unpublished information in the editor's own research without the express written consent of the Author. Editors should take reasonable responsive measures when ethical complaints have been presented concerning a submitted manuscript or published paper.
Reviewers: Any manuscripts received for review must be treated as confidential documents. Privileged information or ideas obtained through peer review must be kept confidential and not used for personal advantage. Reviewers should be conducted objectively, and observations should be formulated clearly with supporting arguments, so that Authors can use them for improving the paper. Any selected Reviewer who feels unqualified to review the research reported in a manuscript or knows that its prompt review will be impossible should notify the Editor and excuse himself from the review process. Reviewers should not consider manuscripts in which they have conflicts of interest resulting from competitive, collaborative, or other relationships or connections with any of the authors, companies, or institutions connected to the papers.