The effect of coastal defense structures (mounds) on southeast coast of Buenos Aires province, Argentine

Bunicontro, Maria Paula; Marcomini, Silvia Cristina; López, Rubén Álvaro

doi:10.1016/j.ocecoaman.2015.08.016

Cited by 12 publications

(5 citation statements)

References 8 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The beach nourishment method was proposed in the 1980s (Isla and Schnack, 1986) and carried out for the only time in 1998 on three beaches in Mar del Plata (Bértola, 2001;Marcomini and López, 2004). At the same time, the effectiveness of detached breakwaters, which reduce the retreat of cliffs while not interrupting coastal drift, has been documented (Bunicontro et al, 2015). Of the 18 planned around 2007, only three of these structures have been installed in the south of the city of Mar del Plata (Isla et al, 2018).…”

Section: The Mar Del Plata Port Settingmentioning

confidence: 99%

Environmental assessment of pre-dredging sediments and proposals for their subsequent management in the port of Mar del Plata, Buenos Aires, Argentina

Cuello¹,

Garzo²,

Elías³

et al. 2022

RGCI

View full text Add to dashboard Cite

Nowadays, the discharge of sediments from dredging works into the sea is one of the most critical problems affecting coastal management. Therefore, the characterization, assessment and handling of the materials to be dredged is of utmost importance. Since its creation, the Port of Mar del Plata, Buenos Aires, Argentina, has presented a structural difficulty that affects its operation: the interruption of the strong littoral drift by its breakwaters generates an important sand sedimentation, blocking the access channel. This hampers the entry and maneuverability of large ships, while promoting sediment imbalances on a regional scale, causing coastal erosion on many beaches. At present, the administrative authorities of the port are proposing a new dredging work in order to restore adequate navigation depths. On this basis, the aim of this work was to assess the current sediment characteristics of the Port of Mar del Plata and compare it with previous results from 1996. Grain size, water content and organic matter were monitored at 12 stations. The results indicate that the external sector receives a larger share of sand than in 1996; silts and clays are preferentially deposited at the inner docks; organic matter, with increases compared to the previous study, accumulates in the inner docks with lower water renewal and higher contributions of waste-water. Based on these results, this work proposes beach nourishment as a management alternative for dredged sediments. Several urban beaches of Mar del Plata subject to regional-scale erosive processes could be the target sites. It is expected that this study will be used as a baseline for the improvement of the environmental quality of the port system as well as for pre- and post-dredging studies within the framework of an integrated coastal zone management.

show abstract

Section: The Mar Del Plata Port Settingmentioning

confidence: 99%

Environmental assessment of pre-dredging sediments and proposals for their subsequent management in the port of Mar del Plata, Buenos Aires, Argentina

Cuello¹,

Garzo²,

Elías³

et al. 2022

RGCI

View full text Add to dashboard Cite

show abstract

“…Oceanographic drivers also cause coastal erosion and a reduction in the surface area of sandy shores on the coasts of Argentina and Brazil in the South-West Atlantic, thus also influencing wave energy and larval supply as a result of the increasing frequency of extreme events and cold fronts others, 2015, 2018). Changes in erosion and coastline impacts affect the economy of local communities and change the way they perceive natural coastal ecosystems on the Atlantic coast of South America as a whole (Bunicontro and others, 2015). In addition to a constant driver, such as changes in the oceanographic dynamics and their influence on coastal habitats, environmental disasters have been a key issue in the South-West Atlantic (Gil and others, 2019;Marcovecchio and others, 2019).…”

Section: Key Region-specific Changes and Consequencesmentioning

confidence: 99%

The Second World Ocean Assessment

2021

View full text Add to dashboard Cite

The past year has presented unprecedented challenges. The coronavirus disease (COVID-19) pandemic has disrupted lives and livelihoods and exposed our societies' fragility. Sadly, the pandemic is not the only crisis that humanity faces. Climate change and biodiversity loss continue unabated, threatening sustainable development and our viability as a species. These challenges are particularly evident when we look at the state of our planet's life support system, the ocean.In 2015, the first World Ocean Assessment warned that many areas of the ocean had been seriously degraded, the greatest threat to the ocean being the failure to deal with the many pressures caused by human activities. The message in the second World Ocean Assessment is that the situation has not improved, with the many benefits that the ocean provides at risk. The Assessment advises that, to ensure sustainability, we must work together to improve integrated ocean management, including through joint research, capacity development and the sharing of data, information and technology.The ocean plays a crucial role in the achievement of the Sustainable Development Goals and the livelihoods of billions of people. We urgently need to change how we interact with it. The forthcoming United Nations Decade of Ocean Science for Sustainable Development and the United Nations Decade on Ecosystem Restoration provide opportunities for us to understand more and to reverse the damage that has already been done. The information in the second Assessment can assist in this process, as well as inform relevant intergovernmental conferences scheduled for 2021.I urge leaders and all stakeholders to heed the warnings in the Assessment as we work to conserve and sustainably manage our planet's marine environment. Let us foster not only a green but also a blue recovery from the COVID-19 pandemic.

show abstract

“…In General Pueyrredon (Mar del Plata city) is where erosion has been more intense. Three beaches were artificially nourished (B ertola, 2001), and several groin fields (Isla et al, 2001) and rubble-mound structures were constructed (Bunicontro et al, 2015). At the northern interval the retreating rate was about 1 m/ yr decreasing in the last years.…”

Section: Variations In the Erosion Ratesmentioning

confidence: 99%

“…Assuming that armored structures are the best defense against wave attack, ripraps parallel to the coast were proposed (Waterman, 1994). Although these structures reduced cliff retreat they also reduced the amount of sand supplied to the beach drift (Bunicontro et al, 2015). To avoid drift obstructions, detached breakwaters were proposed in 2007 at Los Acantilados beach (south of General Pueyrredon).…”

Section: Introductionmentioning

confidence: 99%