Analysis of Climate-Related Risks for Chile’s Coastal Settlements in the ARClim Web Platform

Winckler, Patricio; Contreras-López, Manuel; Garreaud, René D.; Meza, Francisco; Larraguibel, Cristian; Esparza, César; Gelcich, Stefan; Falvey, Mark; Mora, Javiera

doi:10.3390/w14223594

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…Time series of wave spectra and statistical parameters (H s , T m , θ m ) were then computed every 3 h, from which, temporal medians for 20 years of statistical parameters were computed for each GCM and then assembled. Figure S1 summarized this process, proposed by Winckler et al [48].…”

Section: Projections Of Wave Climatementioning

confidence: 98%

Projections of Beach Erosion and Associated Costs in Chile

Winckler

Martín²,

Esparza

et al. 2023

Sustainability

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Economic costs associated to coastal erosion are projected in 45 sandy beaches in Chilean coasts. We compare mid-century (2026–2045) and end-of-century projections (2081–2100) of wave climate and sea-level rise (SLR) with a historical period (1985–2004) using several General Circulation Models for the RCP 8.5 scenario. Offshore wave data are then downscaled to each site, where shoreline retreat is assessed with Bruun rule for various berm heights and sediment diameters. Results indicate that mid-century retreat would be moderate (>13 m) while larger end-of-century projections (>53 m) are explained by SLR (0.58 ± 0.25 m). A small counterclockwise rotation of long beaches is also expected. To assess the costs of shoreline retreat, we use the benefit transfer methodology by using adjusted values from a previous study to the sites of interest. Results show that, by mid-century, beach width reduction would be between 2.0% and 68.2%, implying a total annual loss of USD 5.6 [5.1–6.1] million. For end-the-century projections, beach width reduction is more significant (8.4–100%), involving a total annual loss of USD 10.5 [8.1–11.8] million. Additionally, by the end-of-century, 13–25 beaches could disappear. These costs should be reduced with coastal management practices which are nevertheless inexistent in the country.

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Section: Projections Of Wave Climatementioning

confidence: 98%

Projections of Beach Erosion and Associated Costs in Chile

Winckler

Martín²,

Esparza

et al. 2023

Sustainability

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“…Currently, in Chile, there is a significant deficit in advances in stormwater management, resulting in flooding within urban areas due to the waterproofing of soils [32]. Changing the relationship between the use of urban and rural areas leads to changes in residents' quality of life, the environment, and ecosystem services, including water resources [33].…”

Section: Urban Stormwater Management Problems In Chilementioning

confidence: 99%

Evaluation of the Use of Permeable Interlocking Concrete Pavement in Chile: Urban Infrastructure Solution for Adaptation and Mitigation against Climate Change

Cacciuttolo,

Garrido,

Painenao

et al. 2023

Water

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There is currently a context of climate change due to the way modern cities are developed, and they are made up mainly of impermeable surfaces and concrete buildings that change the hydrological cycle, causing (i) an increase in temperatures, (ii) the accumulation of stormwater on different surfaces, (iii) overflow in drainage systems, and (iv) the alteration of ventilation patterns, among others. This article presents a case study on the implementation of a permeable interlocking concrete paving (PICP) system, and it develops physical–mathematical modeling using software for the design of a parking lot that currently does not have adequate paving and urban drainage, resulting in sporadic flooding due to heavy rainfall in the city of Temuco, La Araucanía region, Chile. This article’s contribution highlights the application of new technology in Chile, discussing road infrastructure solutions based on sustainable urban drainage systems (SUDSs), which seek to implement feasible alternatives in urban sectors to improve human livelihood. The factors studied include structural and hydrological properties, along with the infiltration analysis of the system according to historical rainfall records in the area. This research concludes that the permeable pavement system with a drainage pipe and smooth roughness coefficient performs satisfactorily for an extreme hydrometeorological event corresponding to 140 mm considering 24 h of rainfall with a return period of 100 years equivalent to an inflow of 673 m3/day. Finally, the results indicate that, at least in the conditions of the city of Temuco, the use of permeable interlocking concrete pavement (PICP) proves to be a sustainable and feasible alternative to implementing measures of adaptation and mitigation against climate change, reducing the city’s flooding zones and allowing the irrigation of urban green areas.

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