The 2006 and 2009 Landslide and Flood Events in the Tartagal River Basin (Argentina)

Brea, José Daniel; Spalletti, Pablo; Amores, Gabriel E.

doi:10.1007/978-3-642-31319-6_46

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…The event dragged a large, unusual amount of sediment and trees. The collapse of a railway bridge caused the blockage of the riverbed flooding the town (Brea et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Catastrophic flash flood triggered by an extreme rainfall event in El Rodeo village, January 2014. Northwestern Pampean Ranges of Argentina

Angillieri

Perucca

Vargas

2016

Geografiska Annaler: Series A, Physical Geography

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Flash floods occur periodically in the hilly areas of Argentina, but since they generally occur at inhabited areas, these are rarely registered. Several factors contribute to the occurrence of flash floods: heavy seasonal rains, rugged topography and geological structures. On Thursday night, 23 January 2014 an extreme rainfall event, took place in El Rodeo, Catamarca Province, triggering an unexpected flash flood. This flood caused 14 fatalities and great economic losses in the main localities of the Ambato Department. Steep slope gradients facilitated the quick drainage of the precipitated volumes. Water, boulders and debris channeled downstream caused severe stream bank erosion and major damage to houses roads and bridges. This paper presents a morphometric analysis in order to determine some geomorphic characteristics of the Ambato River basin, together with a preliminary analysis of the flood hazard potentially damaging to inhabitants and infrastructure to downstream villages. The study was carried out using high-resolution satellite data acquired before and after the event. The drainage networks were derived from Aster GDEM V2 and satellite images.

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“…The event dragged a large, unusual amount of sediment and trees. The collapse of a railway bridge caused the blockage of the riverbed flooding the town (Brea et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Catastrophic flash flood triggered by an extreme rainfall event in El Rodeo village, January 2014. Northwestern Pampean Ranges of Argentina

Angillieri

Perucca

Vargas

2016

Geografiska Annaler: Series A, Physical Geography

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“…Landslide susceptibility zonation in the Tartagal River Basin, Sierras Subandinas, Salta, Argentina destruction of the main bridge of the city of Tartagal and severe flooding. Officially, two people killed, 1,000 evacuated and severe material damages were reported (Baumann et al, 2009(Baumann et al, , 2011Brea et al, 2013). Events of this type occurred in the past but none of the magnitude of the February 2009 disaster (Adler, 2009).…”

mentioning

confidence: 99%

“…High discharge levels resulted in the removal of the channel coating and subsequent deep, lateral and backward erosion that eventually produced the collapse of residential buildings that were lying in the margins. Approximately 130 people had to be evacuated (Adler, 2009;Brea et al, 2013). Within…”

mentioning

confidence: 99%

Landslide susceptibility zonation in the Tartagal River basin, Sierras Subandinas, Salta, Argentina

Cardozo

Toyos

Baumann

2021

andgeo

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On February 2009 intense rainfall triggered landslides in the Tartagal River basin that evolved into a debris flow that caused severe flooding in the town of Tartagal, Salta, Argentina. Based on these events, this paper presents a first attempt to map the landslides susceptibility in the Tartagal River basin. First, we elaborated an inventory map by using a 10 m pixel SPOT image acquired just after the disaster. Second, we evaluated a set of conditioning factors, which included lithology, slope and curvature; we derived the topographical variables from a 12.5 m pixel digital elevation model (DEM) based on a stereo-pair of satellite images ALOS-PRISM. Finally, we used these conditioning factors and the 2009 landslides inventory map as input for a heuristic model to elaborate the susceptibility map. The results indicated that landslides affected an area of 8 km2 and that at least 2.2x106 m3 of material were removed. The susceptibility map identified zones of low, moderate, high and very high susceptibility that occupied 18, 22, 25 and 17 km2, respectively. Accuracy assessment using data covering landslides occurred in 2006 showed that 95% of them fell within the high and very high susceptibility areas. The results presented herein provide vital baseline information for future studies and may contribute for the development of landslide hazard mitigation strategies.

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Summer rainstorm associated with a debris flow in the Amarilla gully affecting the international Agua Negra Pass (30°20′S), Argentina

et al. 2017

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The Central-West region of Argentina was seriously affected by a series of convective summer storms on January-February of 2013 generating many debris flows and rockfall in the Central Andes mountain regions. In particular, the unreported 8th February event caused the sad death of a 10-year-old child being completely ignored by society and local authorities. Despite this, meteorological conditions associated with this event and further episodes were rarely measured and determined mainly due to scarce meteorological stations in Andean mountain areas. In this paper, meteorological data from CMORPH algorithm and measurements of surrounding gauges were analyzed for estimating the triggering precipitation value of this event. As well, the particular debris flow channeled into the main branch of the Amarilla gully in the Agua Negra valley was geomorphologically described. The amount of precipitation associated with this debris flow was 5.5 and 13.2 mm accumulated previous to the event. This violent debris flow was generated in a talus zone in a periglacial environment located just below a covered rock glacier. However, the influence of the permafrost thawing in this process is not feasible. The altitude of the 0 °C isotherm was lower during the previous days of the event, and no monitoring on permafrost is available for this area. The volume of removed mass was estimated in 5 9 10 4 m 3 , and the mean velocity was 35 km/h. Boulders of 4 m diameter were found in the source area, while the deposit is up to 75% sandy with clasts that hardly exceed 10 cm in the alluvial fan distal part. Herein the main objective is to advice about the probable catastrophic impact of similar events in the future. These findings could be useful for hazard remediation, mitigation, and prevention plans for the Agua Negra international pass under construction.

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The 2006 and 2009 Landslide and Flood Events in the Tartagal River Basin (Argentina)

Cited by 4 publications

References 7 publications

Catastrophic flash flood triggered by an extreme rainfall event in El Rodeo village, January 2014. Northwestern Pampean Ranges of Argentina

Catastrophic flash flood triggered by an extreme rainfall event in El Rodeo village, January 2014. Northwestern Pampean Ranges of Argentina

Landslide susceptibility zonation in the Tartagal River basin, Sierras Subandinas, Salta, Argentina

Summer rainstorm associated with a debris flow in the Amarilla gully affecting the international Agua Negra Pass (30°20′S), Argentina

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