33
publications with author
Alfonsina Tripaldi
Unlock your academic potential and expand your network by joining us!
Total number of authors: 1
A 1:60,000 scale geomorphological map of the Argentine side of the northeastern extreme of Isla Grande de Tierra del Fuego in southernmost South America is presented. This paper describes and summarizes the geomorphology of the mapped area, which includes glacial, periglacial, fluvial, coastal, aeolian, lacustrine, and anthropogenic landforms that span over 680 km2 north of San Sebastián Bay in a sparsely populated semiarid and cold steppe used for sheep breeding and hydrocarbon extraction. We used Landsat-8, Sentinel-2, and ALOS-PALSAR satellite products combined with field validation to create the map. Glacial advances and retreats as well as climatic and sea level fluctuations that controlled fluvial systems and coastal dynamics were the main sculptors of the landscape during the Late Cenozoic. Aeolian, lacustrine, and anthropogenic activity were later minor contributors. The presented free, open access, vector geomorphological map is intended to be a supporting tool for multidisciplinary researchers and decision-makers.
Luis Díaz Balocchi; Juan Federico Ponce; Alfonsina Tripaldi; Ignacio Magneres. Geomorphology of the northeastern extreme of Isla Grande de Tierra del Fuego, Argentina. Journal of Maps 2020, 16, 512 -523.
AMA StyleLuis Díaz Balocchi, Juan Federico Ponce, Alfonsina Tripaldi, Ignacio Magneres. Geomorphology of the northeastern extreme of Isla Grande de Tierra del Fuego, Argentina. Journal of Maps. 2020; 16 (2):512-523.
Chicago/Turabian StyleLuis Díaz Balocchi; Juan Federico Ponce; Alfonsina Tripaldi; Ignacio Magneres. 2020. "Geomorphology of the northeastern extreme of Isla Grande de Tierra del Fuego, Argentina." Journal of Maps 16, no. 2: 512-523.
Alfonsina Tripaldi; Carlos O. Limarino. Vallecito Formation (Miocene): The evolution of an eolian system in an Andean foreland basin (northwestern Argentina). Journal of South American Earth Sciences 2005, 19, 343 -357.
AMA StyleAlfonsina Tripaldi, Carlos O. Limarino. Vallecito Formation (Miocene): The evolution of an eolian system in an Andean foreland basin (northwestern Argentina). Journal of South American Earth Sciences. 2005; 19 (3):343-357.
Chicago/Turabian StyleAlfonsina Tripaldi; Carlos O. Limarino. 2005. "Vallecito Formation (Miocene): The evolution of an eolian system in an Andean foreland basin (northwestern Argentina)." Journal of South American Earth Sciences 19, no. 3: 343-357.
Sergio A. Marenssi; Carlos O. Limarino; Alfonsina Tripaldi; Laura I. Net. Fluvial systems variations in the Rio Leona Formation: Tectonic and eustatic controls on the Oligocene evolution of the Austral (Magallanes) Basin, southernmost Argentina. Journal of South American Earth Sciences 2005, 19, 359 -372.
AMA StyleSergio A. Marenssi, Carlos O. Limarino, Alfonsina Tripaldi, Laura I. Net. Fluvial systems variations in the Rio Leona Formation: Tectonic and eustatic controls on the Oligocene evolution of the Austral (Magallanes) Basin, southernmost Argentina. Journal of South American Earth Sciences. 2005; 19 (3):359-372.
Chicago/Turabian StyleSergio A. Marenssi; Carlos O. Limarino; Alfonsina Tripaldi; Laura I. Net. 2005. "Fluvial systems variations in the Rio Leona Formation: Tectonic and eustatic controls on the Oligocene evolution of the Austral (Magallanes) Basin, southernmost Argentina." Journal of South American Earth Sciences 19, no. 3: 359-372.
Carlos O Limarino; Silvia N Césari; Laura I Net; Sergio A Marenssi; Raúl P Gutierrez; Alfonsina Tripaldi. The Upper Carboniferous postglacial transgression in the Paganzo and Rı́o Blanco basins (northwestern Argentina): facies and stratigraphic significance. Journal of South American Earth Sciences 2002, 15, 445 -460.
AMA StyleCarlos O Limarino, Silvia N Césari, Laura I Net, Sergio A Marenssi, Raúl P Gutierrez, Alfonsina Tripaldi. The Upper Carboniferous postglacial transgression in the Paganzo and Rı́o Blanco basins (northwestern Argentina): facies and stratigraphic significance. Journal of South American Earth Sciences. 2002; 15 (4):445-460.
Chicago/Turabian StyleCarlos O Limarino; Silvia N Césari; Laura I Net; Sergio A Marenssi; Raúl P Gutierrez; Alfonsina Tripaldi. 2002. "The Upper Carboniferous postglacial transgression in the Paganzo and Rı́o Blanco basins (northwestern Argentina): facies and stratigraphic significance." Journal of South American Earth Sciences 15, no. 4: 445-460.
Alfonsina Tripaldi. Late Quaternary aeolian record and paleoclimatic cond-itions at the distal Andean piedmont, southern Mendoza, Argentina. Quaternary International 2012, 279-280, 501 .
AMA StyleAlfonsina Tripaldi. Late Quaternary aeolian record and paleoclimatic cond-itions at the distal Andean piedmont, southern Mendoza, Argentina. Quaternary International. 2012; 279-280 ():501.
Chicago/Turabian StyleAlfonsina Tripaldi. 2012. "Late Quaternary aeolian record and paleoclimatic cond-itions at the distal Andean piedmont, southern Mendoza, Argentina." Quaternary International 279-280, no. : 501.
Baylor University; Steven L. Forman; Alfonsina Tripaldi. 80 KA RECORD OF EOLIAN DEPOSITION OF THE PAMPEAN SAND SEA, WESTERN ARGENTINA AND POTENTIAL LINKAGES BETWEEN NORTHERN AND SOUTHERN HEMISPHERE CLIMATE VARIABILITY. Geological Society of America Abstracts with Programs 2016 .
AMA StyleBaylor University, Steven L. Forman, Alfonsina Tripaldi. 80 KA RECORD OF EOLIAN DEPOSITION OF THE PAMPEAN SAND SEA, WESTERN ARGENTINA AND POTENTIAL LINKAGES BETWEEN NORTHERN AND SOUTHERN HEMISPHERE CLIMATE VARIABILITY. Geological Society of America Abstracts with Programs. 2016; ():.
Chicago/Turabian StyleBaylor University; Steven L. Forman; Alfonsina Tripaldi. 2016. "80 KA RECORD OF EOLIAN DEPOSITION OF THE PAMPEAN SAND SEA, WESTERN ARGENTINA AND POTENTIAL LINKAGES BETWEEN NORTHERN AND SOUTHERN HEMISPHERE CLIMATE VARIABILITY." Geological Society of America Abstracts with Programs , no. : .
Drought episodes during the early–mid 20th century were recognized and described in several places around the world, with extreme dry conditions and widespread landscape denudation, like during the famous ‘Dust Bowl’ in North America. However, there is scant documentation of droughts in southern South America, particularly from the Pampas, and none based on the geological record. In this article, we provide clear evidence of aeolian reactivation and sand deposition in some areas of La Pampa and San Luis provinces, western Pampas (Argentina), during early–mid 20th century in response to drier conditions, probably amplified, like historic droughts in North America, by anthropogenic factors (e.g. significant population increase and agriculture expansion into a fragile environment). Evidence includes widespread bare sand blowouts, extensive surfaces with active sand migration, steep dune lee slopes, and sharp crests covered by weak soil development (A/C profile), accompanied by historical documents. Optically stimulated luminescence (OSL) ages on aeolian beds confirm mobilization and sedimentation by wind processes c. 95–60 yr BP. Considering the dominant (over 70%) austral spring–summer precipitation, it is possible the rainfall deficit in western Pampas was linked to positive sea surface temperature (SST) anomalies in the western subtropical South Atlantic Ocean (20–30°S and 30–50° W), according to significant canonical correlation between the precipitation field in subtropical South America and the Atlantic Ocean SST anomalies.
Alfonsina Tripaldi; Marcelo A Zárate; Steven L Forman; Timothy Badger; Moira E Doyle; Patricia Ciccioli. Geological evidence for a drought episode in the western Pampas (Argentina, South America) during the early–mid 20th century. The Holocene 2013, 23, 1731 -1746.
AMA StyleAlfonsina Tripaldi, Marcelo A Zárate, Steven L Forman, Timothy Badger, Moira E Doyle, Patricia Ciccioli. Geological evidence for a drought episode in the western Pampas (Argentina, South America) during the early–mid 20th century. The Holocene. 2013; 23 (12):1731-1746.
Chicago/Turabian StyleAlfonsina Tripaldi; Marcelo A Zárate; Steven L Forman; Timothy Badger; Moira E Doyle; Patricia Ciccioli. 2013. "Geological evidence for a drought episode in the western Pampas (Argentina, South America) during the early–mid 20th century." The Holocene 23, no. 12: 1731-1746.
Steven L. Forman; Alfonsina Tripaldi; Patricia L. Ciccioli. Eolian sand sheet deposition in the San Luis paleodune field, western Argentina as an indicator of a semi-arid environment through the Holocene. Palaeogeography, Palaeoclimatology, Palaeoecology 2014, 411, 122 -135.
AMA StyleSteven L. Forman, Alfonsina Tripaldi, Patricia L. Ciccioli. Eolian sand sheet deposition in the San Luis paleodune field, western Argentina as an indicator of a semi-arid environment through the Holocene. Palaeogeography, Palaeoclimatology, Palaeoecology. 2014; 411 ():122-135.
Chicago/Turabian StyleSteven L. Forman; Alfonsina Tripaldi; Patricia L. Ciccioli. 2014. "Eolian sand sheet deposition in the San Luis paleodune field, western Argentina as an indicator of a semi-arid environment through the Holocene." Palaeogeography, Palaeoclimatology, Palaeoecology 411, no. : 122-135.
Marcelo A. Zárate; Alfonsina Tripaldi. The aeolian system of central Argentina. Aeolian Research 2012, 3, 401 -417.
AMA StyleMarcelo A. Zárate, Alfonsina Tripaldi. The aeolian system of central Argentina. Aeolian Research. 2012; 3 (4):401-417.
Chicago/Turabian StyleMarcelo A. Zárate; Alfonsina Tripaldi. 2012. "The aeolian system of central Argentina." Aeolian Research 3, no. 4: 401-417.
Carlos Limarino; Alfonsina Tripaldi; Sergio Marenssi; Luis Fauqué. Tectonic, sea-level, and climatic controls on Late Paleozoic sedimentation in the western basins of Argentina. Journal of South American Earth Sciences 2006, 22, 205 -226.
AMA StyleCarlos Limarino, Alfonsina Tripaldi, Sergio Marenssi, Luis Fauqué. Tectonic, sea-level, and climatic controls on Late Paleozoic sedimentation in the western basins of Argentina. Journal of South American Earth Sciences. 2006; 22 (3-4):205-226.
Chicago/Turabian StyleCarlos Limarino; Alfonsina Tripaldi; Sergio Marenssi; Luis Fauqué. 2006. "Tectonic, sea-level, and climatic controls on Late Paleozoic sedimentation in the western basins of Argentina." Journal of South American Earth Sciences 22, no. 3-4: 205-226.