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- W2136911656 abstract "Research Article| January 01, 1995 Impact of Erosion, Mass Wasting, and Sedimentation on Human Activities in the Río Grande Basin, Jujuy Province, Argentina WALDO CHAYLE; WALDO CHAYLE Instituto de Geológia y Minería, Universidad Nacional de Jujuy, (4600) S. S. de Jujuy, Argentina Search for other works by this author on: GSW Google Scholar WILLIAM J. WAYNE WILLIAM J. WAYNE Department of Geology, University of Nebraska, Lincoln, NE 68588-0340 Search for other works by this author on: GSW Google Scholar Environmental and Engineering Geoscience (1995) I (4): 403–416. https://doi.org/10.2113/gseegeosci.I.4.403 Article history first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation WALDO CHAYLE, WILLIAM J. WAYNE; Impact of Erosion, Mass Wasting, and Sedimentation on Human Activities in the Río Grande Basin, Jujuy Province, Argentina. Environmental and Engineering Geoscience 1995;; I (4): 403–416. doi: https://doi.org/10.2113/gseegeosci.I.4.403 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentBy SocietyEnvironmental and Engineering Geoscience Search Advanced Search Abstract Nearly all dry mountainous regions are affected by severe erosion, floods, and debris flows during times of intense precipitation. The lithology, geologic structure, and climate in Jujuy Province, Argentina combine to place at serious risk the people who live along the Río Grande, the major river that drains the east side of the Cordillera Oriental and the west side of the Sierras Subandinas. Nearly all precipitation falls during summer (January–March) with little during the remainder of the year; most of the basin is semi-arid to arid, although the southern end has a humid subtropical climate. Relief is great, as much as 4,000 m in 15 to 20 km, and the streams that drain the mountains have high gradients. Rapid runoff during the wet season changes the Río Grande, nearly dry most of the year, into a torrent that erodes bridge abutments and floods the valley floor. Precambrian-age low-grade metaclastics shatter in the frost climate of the higher mountains and become source material for debris flows that damage or bury roads, railroads, and houses. Poorly consolidated deposits of late Tertiary rocks and Quaternary deposits along the sides of the valley erode readily and yield large volumes of sediment in addition to that coming from higher parts of the basin.These processes are common to all rivers that drain mountainous regions, but lack of understanding of the geomorphic regime of the rivers has led to unexpected hazardous conditions that are expensive to correct. Most communities are along transportation routes that follow the river. Many bridges and levees are inadequately designed for the high runoff rates and sediment load, thus are frequently damaged or destroyed. Dam construction causes aggradation upstream and scouring downstream. Housing in the city has expanded onto the floodplain; flood walls to protect the residents of these “barrios de emergencia” constrict the channel. Application of adequate geomorphic and geologic information provided prior to new construction may reduce the costs of future repair. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article." @default.
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- W2136911656 title "Impact of Erosion, Mass Wasting, and Sedimentation on Human Activities in the Rio Grande Basin, Jujuy Province, Argentina" @default.
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