Forecasting Streamflows in the San Juan River Basin in Argentina

Giménez, J.C. Juárez; Lentini, Emilio; Cirelli, Alicia Fernández

doi:10.1007/978-90-481-2776-4_16

Cited by 2 publications

(4 citation statements)

References 4 publications

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“…The eastern Precordillera acts as a transition zone (Fielding and Jordan, 1988;Zapata and Allmendinger, 1996) between these two tectonic environs and is characterized by thin-skinned westverging thrust faults shallower than w5 km depth (von Gosen, 1992) and reverse fault seismicity deeper than 40 km (Smalley et al, 1993). Studies undertaken by many researchers suggest that the crust beneath both the Eastern Precordillera and the Sierras Pampeanas is affected by active planar reverse faults below 5 km depth (Kandinsky-Cade et al, 1985;Smalley et al, 1993;Meigs et al, 2006;Gimenez et al, 2010;Meigs and Nabelek, 2010), whereas other researchers suggest that these deeper structures are secondary to fault movement (Vergés et al, 2007).…”

Section: Regional Settingmentioning

confidence: 99%

“…San Juan and the nearby study areas are located within the South American Arid Diagonal (Bruniard, 1982;Morales et al, 2009), a region believed to have been climatically sensitive to the shifts of the Pacific and Atlantic anticyclones from the late Pleistocene through the Holocene (Abraham et al, 2000). For the period of 1940e2007, mean annual precipitation in San Juan was 93 mm (SMN, 2007;Gimenez et al, 2010), classifying it as hyper-arid (growing period < 0 days e FAOeIIASA Agro-ecological Zone, 2002; annual precipitation <200 mm e FAO, 2013).…”

Section: Regional Settingmentioning

confidence: 99%

“…Q5 c surface shows the cobbles that were sampled for TCN dating. Hallet and Putkonen, 1993;Putkonen and Swanson, 2003;Applegate et al, 2010Applegate et al, , 2012, many sources of potential inaccuracies in TCN boulder/cobble dating also apply to alluvial fan and fluvial terrace surfaces and deposits (Hetzel et al, 2002;González et al, 2006;Schmidt et al, 2011). TCN boulder/cobble ages may overestimate the actual exposure age of a surface due to predepositional inheritance, or underestimate it due to shielding or extreme erosion of the sampled boulders/cobbles.…”

Section: Be Surface Ages and Statistical Analysismentioning

confidence: 99%

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Timing and nature of alluvial fan and strath terrace formation in the Eastern Precordillera of Argentina

Hedrick

Owen

Rockwell

et al. 2013

Quaternary Science Reviews

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Sixty-eight 10 Be terrestrial cosmogenic nuclide (TCN) surface exposure ages are presented to define the timing of alluvial fan and strath terrace formation in the hyper-arid San Juan region of the Argentine Precordillera. This region is tectonically active, and numerous fault scarps traverse Quaternary landforms. The three study sites, Marquesado strath complex, Loma Negra alluvial fan and Carpintería strath complex reveal a history of alluvial fan and strath terrace development over the past w225 ka. The Marquesado complex Q3 m surface dates to w17 AE 3 ka, whereas the Loma Negra Q1 ln , Q2 ln , Q3 ln , Q4 ln , and Q5 ln surfaces date to w24 AE 3 ka, w48 AE 2 ka, w65 AE 13 ka, w105 AE 21 ka, and w181 AE 29 ka, respectively. The Carpintería complex comprises eight surfaces that have been dated and include the Q1 c (w23 AE 3 ka), Q2 c (w5 AE 5 ka), Q3a c (w25 AE 12 ka), Q3b c (w29 AE 15 ka), Q4 c (w61 AE 12 ka), Q5 c (w98 AE 18 ka), Q6 c (w93 AE 18 ka), and Q7 c (w212 AE 37 ka). 10 Be TCN depth profile data for the Loma Negra alluvial fan complex and Carpintería strath terrace complex, as well as OSL ages on some Carpintería deposits, aid in refining surface ages for comparison with local and global climate proxies, and additionally offer insights into inheritance and erosion rate values for TCNs (w10 Â 10 4 10 Be atoms/g of SiO 2 and w5 m Ma À1 , respectively). Comparison with other alluvial fan studies in the region show that less dynamic and older preserved surfaces occur in the Carpintería and Loma Negra areas with only younger alluvial fan surfaces preserved both to the north and south. These data in combination with that of other studies illustrate broad regional agreement between alluvial fan and strath terrace ages, which suggests that climate is the dominant forcing agent in the timing of terrace formation in this region.

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Section: Regional Settingmentioning

confidence: 99%

Section: Regional Settingmentioning

confidence: 99%

Section: Be Surface Ages and Statistical Analysismentioning

confidence: 99%

See 1 more Smart Citation

Timing and nature of alluvial fan and strath terrace formation in the Eastern Precordillera of Argentina

Hedrick

Owen

Rockwell

et al. 2013

Quaternary Science Reviews

View full text Add to dashboard Cite

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“…Classification, regression tree and genetic programming were used for the streamflow predication based on the ENSO, PDO and North Atlantic oscillation (NAO) [17]. The seasonal streamflow was predicated and the results indicated that an accurate predication based on genetic programming for winter and spring could be obtained based on the NAO index with different lag times, and the results of genetic programming had a better correlation with the observed data compared to the other models.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Predictability of an Improved ANFIS Model for Monthly Streamflow Using Lagged Climate Indices as Predictors

Ehteram

Afan

Dianatikhah

et al. 2019

Water

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The current study investigates the effect of a large climate index, such as NINO3, NINO3.4, NINO4 and PDO, on the monthly stream flow in the Aydoughmoush basin (Iran) based on an improved Adaptive Neuro Fuzzy Inference System (ANFIS) during 1987–2007. The bat algorithm (BA), particle swarm optimization (PSO) and genetic algorithm (GA) were used to obtain the ANFIS parameter for the best ANFIS structure. Principal component analysis (PCA) and Varex rotation were used to decrease the number of effective components needed for the streamflow simulation. The results showed that the large climate index with six-month lag times had the best performance, and three components (PCA1, PCA2 and PCA3) were used to simulate the monthly streamflow. The results indicated that the ANFIS-BA had better results than the ANFIS-PSO and ANFIS-GA, with a root mean square error (RMSE) 25% and 30% less than the ANFIS-PSO and ANFIS-GA, respectively. In addition, the linear error in probability space (LEPS) score for the ANFIS-BA, based on the average values for the different months, was less than the ANFIS-PSO and ANFIS-GA. Furthermore, the uncertainty values for the different ANFIS models were used and the results indicated that the monthly simulated streamflow by the ANFIS was computed well at the 95% confidence level. It can be seen that the average streamflow for the summer season is 75 m3/s, so that the stream flow for summer, based on climate indexes, is more than that in other seasons.

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Forecasting Streamflows in the San Juan River Basin in Argentina

Cited by 2 publications

References 4 publications

Timing and nature of alluvial fan and strath terrace formation in the Eastern Precordillera of Argentina

Timing and nature of alluvial fan and strath terrace formation in the Eastern Precordillera of Argentina

Assessing the Predictability of an Improved ANFIS Model for Monthly Streamflow Using Lagged Climate Indices as Predictors

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