| Title | Estudio de los flujos ocurridos en el 2007 en Chalala y Coquena, Purmamarca, provincia de Jujuy |
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| Author | Gonzalez, M A; Baumann, V; Jackson, L E, Jr. |
| Source | Revista Asociacion Geologica Argentina vol. 65, no. 4, 2009 p. 791-804 |
| Links | Online - En ligne
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| Image |  |
| Year | 2009 |
| Alt Series | Earth Sciences Sector, Contribution Series 20080655 |
| Document | serial |
| Lang. | Spanish |
| Media | paper; on-line; digital |
| File format | pdf; xml |
| Area | Jujuy Province; Chalala; Coquena; Purmamarca; Argentina |
| Lat/Long WENS | -72.0000 -71.0000 22.0000 21.0000 |
| Subjects | engineering geology; surficial geology/geomorphology; landslides; landslide deposits; mudflows; flow velocities; flow mechanisms; debris flows; debris flow deposits |
| Illustrations | location maps; photographs; tables; graphs |
| Released | 2009 01 01 |
| Abstract | This work presents the results of the investigation of mudflows from Quebrada de Coquena of 7 March, 2007 and from Quebrada de Chalala of 29 March of the same year. These stream basins are tributary to
the Quebrada de Purmamarca located in the Cordillera Oriental, Jujuy Province, Argentina. The studies focussed on the classification of the type of mass flow type and quantification of the magnitude of these events. Flow velocity was calculated using
two different equations. Both methods produced similar results. Flow volume was measured directly in the field. The relationship between the total discharge (V) and the peak flow (Qp) was estimated by using equations for similar flows from the
geotechnical literature. Maximum erosional yield was estimated using the JICA method. The probability of large destructive mudflows inundating the fans of these streams is very high (>1/20) and their magnitude is class 5: a volume greater than 105
m3. The flow velocity, volume and frequency calculated in this study are valuable for hazard mapping, the creation and placement of infrastructure, and land use planning. |
| GEOSCAN ID | 226413 |
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