Vulnerability to contamination of the Zaachila aquifer, Oaxaca, Mexico
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Universidad Nacional Autónoma de México
2005
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| author | Salvador I. Belmonte-Jiménez |
| author_facet | Salvador I. Belmonte-Jiménez |
| contents | Vulnerability to contamination of the Zaachila aquifer, Oaxaca, Mexico Salvador I. Belmonte-Jiménez J. Oscar Campos-Enríquez Miguel A. Alatorre Zamora Ciencias de la Tierra aquifer Zaachila Vulnerability contamination The aquifer of Zaachila was evaluated following conventional methods (DRASTIC, AVI, and GOD). Depth to the watertable was established from a set of wells. Accordingly, the groundwater flows from N to S. Hydraulic conductivity ranges between1.81647E-05 and 1.70411E-04 m/s, while transmissivity varies between 22.01 and 220.85 m2/day. The net mean annualrecharge was estimated at 98 mm/year. The aquifer is constituted mainly by sand, gravel and clay. The soil cover is up to 1.5 mthick and is constituted by lime, clay and sandy material. According to GOD, some zones of this aquifer have a medium to highvulnerability. DRASTIC assigns a high vulnerability to large part of the area. The highest values are observed in the southern andmiddle sections, from Oaxaca city to the south including San Bartolo Coyotepec, as well as Zaachila town and airport. The AVImethod assigns to the valley a high to very high vulnerability. A sensitivity analysis suggests that depth to water table is the keyfactor determining vulnerability, followed by impact to the vadose zone and soil type. 2005 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56844307 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.44 |
| format | Artículo científico |
| id | redalyc_56844307 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Vulnerability to contamination of the Zaachila aquifer, Oaxaca, Mexico Salvador I. Belmonte-Jiménez Ciencias de la Tierra aquifer Zaachila Vulnerability contamination Vulnerability to contamination of the Zaachila aquifer, Oaxaca, Mexico Salvador I. Belmonte-Jiménez J. Oscar Campos-Enríquez Miguel A. Alatorre Zamora Ciencias de la Tierra aquifer Zaachila Vulnerability contamination The aquifer of Zaachila was evaluated following conventional methods (DRASTIC, AVI, and GOD). Depth to the watertable was established from a set of wells. Accordingly, the groundwater flows from N to S. Hydraulic conductivity ranges between1.81647E-05 and 1.70411E-04 m/s, while transmissivity varies between 22.01 and 220.85 m2/day. The net mean annualrecharge was estimated at 98 mm/year. The aquifer is constituted mainly by sand, gravel and clay. The soil cover is up to 1.5 mthick and is constituted by lime, clay and sandy material. According to GOD, some zones of this aquifer have a medium to highvulnerability. DRASTIC assigns a high vulnerability to large part of the area. The highest values are observed in the southern andmiddle sections, from Oaxaca city to the south including San Bartolo Coyotepec, as well as Zaachila town and airport. The AVImethod assigns to the valley a high to very high vulnerability. A sensitivity analysis suggests that depth to water table is the keyfactor determining vulnerability, followed by impact to the vadose zone and soil type. 2005 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56844307 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.3 Vol.44 |
| title | Vulnerability to contamination of the Zaachila aquifer, Oaxaca, Mexico |
| topic | Ciencias de la Tierra aquifer Zaachila Vulnerability contamination |
| url | https://www.redalyc.org/articulo.oa?id=56844307 |