Short and medium-term coastal evolution of Necochea Municipality, Buenos Aires province, Argentina

Merlotto, Alejandra; Bértola, Germán R.; Isla, Federico Ignacio; Cortizo, Luis Camilo

doi:10.1007/s12665-013-2525-6

Cited by 19 publications

(24 citation statements)

References 32 publications

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“…The study of the coastal evolution showed that the coastline at Quequén has retreated, and also in the short term, the negative sedimentary balances indicate an accentuated erosion process. On the other hand, at Necochea the coastline has remained stable or advanced; while in the short-term the sedimentary balances showed an incipient erosion process (Merlotto et al 2014). The total urban area, comprised by the two localities, constitutes a medium-sized city of 80,845 inhabitants (INDEC 2005).…”

Section: Study Areamentioning

confidence: 99%

“…), urban growth and the consequent dune fixation, sand mining and exploitation of aquifers without an adequate management program, have worsen the natural hazards and increased the coastal risks. Coastal erosion constitute a significant environmental problem in several urban centers (Fiore et al 2009;Merlotto and Bértola 2009;Pousa et al 2013;Merlotto et al 2014). Nevertheless, the study of these coastal problems from a risk perspective is scarce in Argentina.…”

Section: Introductionmentioning

confidence: 99%

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Hazard, vulnerability and coastal erosion risk assessment in Necochea Municipality, Buenos Aires Province, Argentina

2016

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This contribution determines the coastal erosion risk of Necochea and Quequén cities, Necochea Municipality, Buenos Aires Province (Argentina). Both risk components, hazard and vulnerability, were assessed by the construction of indices. The hazard index is composed of four indicators: the erosion or accretion rate, coastal geomorphology, storm waves effects, and sediment supply. The vulnerability index is comprised of land use/cover, demographic, life conditions, and work and consumption indicators, and includes population census data such as demographic, education, health, sanitary, economic, production, work and population exposure aspects. The analysis concluded that coastal erosion risk ranges from very low to high along the study area, Quequén yielding the highest values. Risk levels vary in both cities based on the uneven spatial distribution of hazard. The risk assessment developed herein constitutes a practical and adequate tool that can be utilized with other elements and tasks in the elaboration of a coastal management program.

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Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hazard, vulnerability and coastal erosion risk assessment in Necochea Municipality, Buenos Aires Province, Argentina

2016

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“…Tal adaptabilidade, no entanto, é condicionada pela disponibilidade de sedimentos e de espaço para que os processos costeiros se desenvolvam. A magnitude das consequências de eventos de alta energia sobre praias depende do grau de intervenção humana na área, visto que esta restringe a capacidade de resposta das praias (Merlotto et al 2014). No âmbito do Projeto EUROSION, "resiliência costeira" é definida como "habilidade inerente da costa para acomodar mudanças induzidas pela elevação do nível do mar, eventos extremos e, ocasionalmente, impactos humanos, mantendo as funções desempenhadas pelo sistema costeiro, a longo prazo".…”

Section: Linha De Costa Zona De Interesseunclassified

“…As praias arenosas apresentam variabilidade ao longo da costa em diferentes escalas espaço-temporais, a qual está associada à atuação individual ou conjunta de múltiplos forçantes e processos (Esteves et al 2006, Del Rio et al 2007, Merlotto et al 2014. A morfologia de uma praia pode ser alterada consideravelmente por efeitos erosivos ou construtivos em curto, médio ou longo-termo.…”

Section: Introductionunclassified

Caracterização do litoral central de Pernambuco (Brasil) quanto ao processo erosivo em curto e médio-termo

Mallmann

Araújo

Droguett

2014

ABEQUA

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Quaternary and Environmental Geosciences (2014) 05(2):137-154Papel da praia na proteção da costa e as alterações oceanográficas em diferentes escalas temporais Caracterização do litoral central de Pernambuco (Brasil) quanto ao processo erosivo em curto e médio-termo AbstractThis article aims for a better understanding of the ongoing erosion along the central coast of Recife Metropolitan Area in terms of the process and of spatial and temporal scales involved. For that, coastal variations of short and medium-term were analyzed, previous studies were reviewed, erosion indicators were surveyed and an inventory of damage records caused by erosion and reported in major newspapers in circulation in the state was conducted. The results showed that the process does not behave homogeneously along the coast, which present areas of intense erosion and other areas where the process does not occur or is incipient. Nor under the temporal point of view the area is homogeneous, presenting segments with distinct behaviors of shoreline in the different time scales considered. Moreover, we observed significant anthropogenic component acting on the reduction of the backshore width in certain segments, represented by the advance of the occupation on sectors of the beach system. The results of the study show us the necessity to consider spatial and temporal variability of the studied beaches before any intervention and demonstrated the importance of developing programs or actions of coastal management that prioritize the maintenance/restoration of the beach system, one of the main current environmental demands in the region.

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“…Stager et al 2010) and studies on soils (Rezapour 2014), karsts (Huang et al 2014), caves (Duc and Guinea 2014), and beaches (Merlotto et al 2014) have benefitted from morphometry. Streams and catchments have similarly been the focus of past studies (Youssef et al 2011;De Paola et al 2013;Magliulo et al 2014).…”

mentioning

confidence: 99%

Morpho-fluvial analysis of headwater catchments: an example from the Central-Eastern Pyrenees

Chevalier¹,

Medina²,

Hürlimann³

et al. 2014

Environ Earth Sci

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Geomorphometry of headwater catchments has been poorly reported in the Central-Eastern Pyrenees. This study presents a series of parameters obtained for Central-Eastern Pyrenean headwater catchments. The database consists of 3005 1 st -and 655 2 nd -order catchments. These catchments have been digitalised, identified, and attributed a value for each parameter. The parameters investigated are divided into three groups: relative to catchments, relative to streams and morpho-hydrological ratios. Histograms reveal similarities between orders for some parameters such as mean slope or orientation, while stream orders seem to condition metrical parameters (area, perimeter, stream length). Streams have been fragmented to assess different values for slope.Values for slope over a small portion of the stream near the outlet seem to show clearer differences between orders. With regard to morpho-hydrological ratios, catchments show better distinctions between orders for the Melton and Lemniscate ratios than for the form factor or the basin elongation. The power-law relationship between catchment area and stream length recognised for large fluvial systems is shown here to follow a linear trend at small values. An attempt to identify the morpho-structural regionalisation differentiating the Axial Pyrenees from the pre-Pyrenees is made based on the parameters. However, applying the methodology to other environments could improve the context of the current results. Similar studies could also benefit from the development of such databases.

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Short and medium-term coastal evolution of Necochea Municipality, Buenos Aires province, Argentina

Cited by 19 publications

References 32 publications

Hazard, vulnerability and coastal erosion risk assessment in Necochea Municipality, Buenos Aires Province, Argentina

Hazard, vulnerability and coastal erosion risk assessment in Necochea Municipality, Buenos Aires Province, Argentina

Caracterização do litoral central de Pernambuco (Brasil) quanto ao processo erosivo em curto e médio-termo

Morpho-fluvial analysis of headwater catchments: an example from the Central-Eastern Pyrenees

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