Coastal processes and environmental hazards: the Buenos Aires (Argentina) and Venetian (Italy) littorals

Pousa, Jorge Lorenzo; Tosi, Luigi; Kruse, Eduardo Emilio; Guaraglia, Dardo Oscar; Bonardi, Maurizio; Mazzoldi, A.; Rizzetto, Federica; Schnack, Enrique J.

doi:10.1007/s00254-006-0424-9

Cited by 52 publications

(46 citation statements)

References 6 publications

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“…A statistical analysis disregarding its seasonal behavior, confirmed that the 1982-83 floods were the largest of the 1904-2004 period (Depetris 2007). These interannual effects can occur both in estuarine areas (Pousa et al 2006, Meccia et al 2009) and on the continental shelf (Piola et al 2005). In the Paraná watershed, the ENSOtriggered flood volume of 1982-83 summed 547,000 hm 3 for the period October-March (figure 3b).…”

Section: The Paraná River Watershedmentioning

confidence: 99%

ENSO impacts on Atlantic watersheds of South America

Isla

Toldo

2013

ABEQUA

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Interannual changes in precipitation cause significant effects on the Pacific watersheds of South America. Large rivers flowing to the Atlantic Ocean as the Paraná and Uruguay are also influenced by ENSO-triggered floods causing significant impacts on the economies of Argentina, Brazil and Uruguay. At the same time, the floodplains of small rivers are also sensitive to strong ENSOs. Floods occur approximately simultaneously in subtropical watersheds of Brazil and high-latitude watersheds of North Patagonia. ENSO-triggered floods were recorded during the years 1941-42, 1982-83 and 1997-98. Several floods impacted along the Itajaí River affecting the higher (Blumenau city) and lower estuary (Itajaí city). The Guaiba River, at the headlands of Lagoa dos Patos, has repeatedly flooded Porto Alegre. At the Río de la Plata basin, significant increases in the discharges were assigned to the Paraná and the Uruguay rivers. The small basin of the Quequén Grande River without extended floodplains is subject to periodic failure of its margins. The Colorado River, the northern limit of Patagonia, is allochthonous and its watershed was artificial and progressively modified; the ENSO event of 1983 caused an increase in its salinity due to the sudden reactivation of the DesaguaderoCuracó system. Keywords: floods; Atlantic rivers; Argentina; Brazil; Uruguay RESUMENLos cambios interanuales en las precipitaciones causan significativos efectos en las cuencas pacíficas de Sudamérica. Los grandes ríos que fluyen hacia el Océano Atlántico como el Paraná y el Uruguay también son influenciados por estas inundaciones originadas por estos eventos ENSO causando significativos impactos en las economías de Argentina, Brasil y Uruguay. Asimismo, las planicies aluviales de los pequeños ríos también son sensibles a los ENSOs fuertes. Las crecidas ocurren casi simultáneamente en las cuencas subtropicales de Brasil como en las cuencas de altas latitudes de Patagonia. Inundaciones gavilladas por eventos ENSO fueron registradas en los años 1941-42, 1982-83 y 1997-98. Varias inundaciones afectaron al río Itajaí afectando las porciones más altas (Blumenau) y bajas del estuario (Itajaí). El río Guaíba, en las cabeceras de la Lagoa dos Patos, ha repetidamente inundado Porto Alegre. En la cuenca del Río de la Plata, incrementos significativos de su descarga fueron originados por los ríos Paraná y Uruguay. La pequeña cuenca del río Quequén Grande sin grandes planicies aluviales está sujeta a periódicos derrumbes de sus albardones. El río Colorado, límite norte de la Patagonia, es alóctono y su cuenca fue progresiva y artificialmente modificada; el ENSO de 1983 causó un aumento de su salinidad debido a la súbita reactivación del sistema DesaguaderoCuracó.

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Section: The Paraná River Watershedmentioning

confidence: 99%

ENSO impacts on Atlantic watersheds of South America

Isla

Toldo

2013

ABEQUA

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“…The monitoring of shoreline variations is the principal approach for providing basic indications on the dynamic of these processes. Mapping coastline position is essential for coastal management and land-use planning [Zeidler, 1997], designing coastal defence and protection infrastructure [Pousa et al, 2007], assessing coastal vulnerability and establishing risk setback lines [Morton and Speed, 1998], estimating the impact of climate change [Tosi et al, 2013b]. Thus shoreline modifications of sandy beaches are utilized for estimating coastal erosion and deposition rates [Mukhopadhyay et al, 2012], assessing sediment transport [Larson et al, 2004], and setting up hydrodynamic models [Butt and Russell, 2000].…”

Section: Introductionmentioning

confidence: 99%

Shoreline detection: capability of COSMO-SkyMed and high-resolution multispectral images

Braga

Tosi

Prati

et al. 2013

European Journal of Remote Sensing

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This study aims to extract the instantaneous shoreline from remote sensing data acquired with very high resolution multispectral and SAR sensors. The capabilities of IKONOS, GeoEye and COSMO-SkyMed for shoreline detection are tested in the Venice littoral (Italy) by classifying the imagery into its land/water components. GPS measurements synchronously to the COSMO-SkyMed acquisitions are carried out along two transects at different tidal levels and used for validation of satellite derived shorelines. Finally, a collection of instantaneous coastlines at a specific tidal level is mapped for reconstructing the intertidal beach morphologic model.

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“…When coastal sands are mined for construction in developing countries, it creates a predicament for the local economy. In Ghana, mining is supporting coastal development, but aggravating coastal erosion (Mensah, 1997;Masalu, 2002;Cho, 2006;Pousa et al, 2007). Although most governments recognize the local impacts of sand mining and mining activities are illegal in many localities, enforcement of these protections has been problematic and requires pressure to stop the practice from local or international environmental groups.…”

Section: Sand and Gravel-mining Landscapes: Coasts And Lakesmentioning

confidence: 99%