Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia
The Alta Guajira region in northernmost Colombia is the driest area in the country, getting less than 200 mm of average rainfall year-round. Many communities of mainly indigenous people inhabit this area, and heavily rely on groundwater from handcrafted wells and rainwater as a source for their catt...
- Autores:
-
Fernández Jiménez, Alejandro
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2017
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/61549
- Acceso en línea:
- http://hdl.handle.net/1992/61549
- Palabra clave:
- Aguas subterráneas
Hidrogeología
Sensores remotos
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-sa/4.0/
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Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| title |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| spellingShingle |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia Aguas subterráneas Hidrogeología Sensores remotos |
| title_short |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| title_full |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| title_fullStr |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| title_full_unstemmed |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| title_sort |
Mapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, Colombia |
| dc.creator.fl_str_mv |
Fernández Jiménez, Alejandro |
| dc.contributor.advisor.none.fl_str_mv |
Iwashita, Fabio |
| dc.contributor.author.none.fl_str_mv |
Fernández Jiménez, Alejandro |
| dc.subject.keyword.spa.fl_str_mv |
Aguas subterráneas Hidrogeología Sensores remotos |
| topic |
Aguas subterráneas Hidrogeología Sensores remotos |
| description |
The Alta Guajira region in northernmost Colombia is the driest area in the country, getting less than 200 mm of average rainfall year-round. Many communities of mainly indigenous people inhabit this area, and heavily rely on groundwater from handcrafted wells and rainwater as a source for their cattle, irrigation and consumption. Few studies have been performed in this area to understand the chemistry, spatial distribution, and recharge processes of ground water. Therefore, the sustainability and quality of aquifers currently used is unknown. In this work, we carried out a remote sensing and GIS-based analysis of the Alta Guajira region, integrating DEM-derived slope, drainage density and lineament density analyses with existing geologic maps, vegetation and surface temperatures obtained from multispectral satellite images. A groundwater potential map was calculated by combining these thematic layers, with their information normalized to a single quantitative scale from 0 to 1, giving each parameter equal weight on the analysis. Four areas of groundwater potential were defined: very low, low, medium and high potential. The resulting areas were then compared with the locations of existing shallow and deep groundwater wells, and natural water springs; this comparison showed a correlation between groundwater potential and spatial location of wells. This study resulted in the estimation of prospect areas where further field work and analytical techniques (like geochemical analyses and recharge estimation) should be carried out to further understand the hydrogeology. Said areas are mostly located on the southern slope of the Macuira and Jarara ranges, and on the flat south-west part of the study area. |
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2017 |
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2017 |
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2022-09-26T22:25:34Z |
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2022-09-26T22:25:34Z |
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Trabajo de grado - Pregrado |
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info:eu-repo/semantics/bachelorThesis |
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Universidad de los Andes |
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Geociencias |
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Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.http://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Iwashita, Fabio555c8e3c-97ed-43b7-8752-9fb1ff793414400Fernández Jiménez, Alejandro7fcff30b-0959-40df-a809-84c4f2aca7fe4002022-09-26T22:25:34Z2022-09-26T22:25:34Z2017http://hdl.handle.net/1992/61549instname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/795264-1001The Alta Guajira region in northernmost Colombia is the driest area in the country, getting less than 200 mm of average rainfall year-round. Many communities of mainly indigenous people inhabit this area, and heavily rely on groundwater from handcrafted wells and rainwater as a source for their cattle, irrigation and consumption. Few studies have been performed in this area to understand the chemistry, spatial distribution, and recharge processes of ground water. Therefore, the sustainability and quality of aquifers currently used is unknown. In this work, we carried out a remote sensing and GIS-based analysis of the Alta Guajira region, integrating DEM-derived slope, drainage density and lineament density analyses with existing geologic maps, vegetation and surface temperatures obtained from multispectral satellite images. A groundwater potential map was calculated by combining these thematic layers, with their information normalized to a single quantitative scale from 0 to 1, giving each parameter equal weight on the analysis. Four areas of groundwater potential were defined: very low, low, medium and high potential. The resulting areas were then compared with the locations of existing shallow and deep groundwater wells, and natural water springs; this comparison showed a correlation between groundwater potential and spatial location of wells. This study resulted in the estimation of prospect areas where further field work and analytical techniques (like geochemical analyses and recharge estimation) should be carried out to further understand the hydrogeology. Said areas are mostly located on the southern slope of the Macuira and Jarara ranges, and on the flat south-west part of the study area.La Alta Guajira, punta Norte de Colombia, es la zona más seca del país, recibiendo menos de 200mm de lluvia en el año. Muchas comunidades, principalmente indígenas, habitan en esta zona y hacen uso de agua subterránea para su supervivencia y la de su ganado, entre otros usos. Existen pocos estudios publicados en esta zona que permitan entender la química, la distribución espacial y los procesos de recarga del agua subterránea presente en esta zona. Debido a esto, la sostenibilidad y la calidad de los acuíferos que se utilizan actualmente no se conoce. En este trabajo se realizó un análisis a partir de SIG y sensores remotos de la zona de estudio (cuenca Cocinetas), integrando pendiente, densidad de drenajes y de lineamientos con mapas geológicos existentes, y de vegetación y temperatura obtenidos a partir de imágenes multi espectrales. Un mapa de potencial hidrogeológico fue calculado, combinando estas capas temáticas, con su información cuantitativa o cualitativa normalizada a valores de 0 a 1, de manera que cada parámetro tuvo igual peso en el análisis. Se definieron cuatro áreas de potencial hidrogeológico: muy bajo, bajo, medio y alto. El mapa obtenido fue comparado con las localizaciones de los pozos someros que utilizan estas poblaciones y de manantiales naturales; esta comparación mostró una correlación entre el potencial hidrogeológico y la localización de los pozos. A partir de los resultados se obtuvieron zonas de prospección donde futuros estudios de campo y análisis (de geoquímica, estimación de recarga y geofísica, entre otros), deberían ser realizados para entender más a fondo los sistemas hidrogeológicos de la zona. Las zonas con mayor potencial se localizan en la pendiente sur de las serranías Jarara y Macuira, y en la zona plana al Sur Oeste de la cuenca.--Tomado del Formato de Documento de Grado.GeocientíficoPregrado20 hojasapplication/pdfspaUniversidad de los AndesGeocienciasFacultad de CienciasDepartamento de GeocienciasMapping groundwater potential in a section of Cocinetas Basin, Alta Guajira, ColombiaTrabajo de grado - Pregradoinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_7a1fTexthttp://purl.org/redcol/resource_type/TPAguas subterráneasHidrogeologíaSensores remotos201111897PublicationTEXT12762.pdf.txt12762.pdf.txtExtracted texttext/plain35742https://repositorio.uniandes.edu.co/bitstreams/78e2cd1a-4f40-4218-87b2-703d59d739f6/download7b0d70bda7870f512f75bee4ef152974MD52ORIGINAL12762.pdfapplication/pdf656796https://repositorio.uniandes.edu.co/bitstreams/4f3b1c64-3e08-4b22-90f4-2c2361d212c6/downloadee9b3261370e94e8107b076ea0aa819dMD51THUMBNAIL12762.pdf.jpg12762.pdf.jpgIM Thumbnailimage/jpeg24544https://repositorio.uniandes.edu.co/bitstreams/c923fd54-415b-4f58-a46c-143dfc8a619d/download1ccdeab7aecc1a7706f319a3d8277101MD531992/61549oai:repositorio.uniandes.edu.co:1992/615492023-10-10 18:04:46.599http://creativecommons.org/licenses/by-nc-sa/4.0/open.accesshttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co |