Browsing by Author "Martínez Reyes, Carolina Del Pilar"

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    Efectos del cambio climático en la zona urbana turística y costera de Viña del Mar : levantamiento de daños para una inundación por marejadas y percepción de seguridad = Effects of climate change on the urban tourist and coastal area of Viña Del Mar : survey of damage for flooding by storm surge and perception of security
    (2019) Igualt, Felipe; Breuer, Wolfgang Alejandro; Contreras-López, Manuel; Martínez Reyes, Carolina Del Pilar
    Many coastal cities are dealing today with different problematics due to climate change. In the case of Villa del Mar, there is an increase in strong swell, making this a high visibility problematic zone. This work analyses the effects of recurrent and strong waves in urbanized coastal lands highly visited by tourists (Avenida Pert, Poblacion Vergara, Vina del Mar), and the perception of security of inhabitants and tourists. By historical wave data analysis, a significant event survey, and a safety perception survey, this work high-lights the negative impact of these events over the urban infrastructure located next to the coastal line, including urban furniture, residences, hotels, cars and stores in the last decades. A negative safety perception on infrastructure and coastal defenses performance was found, as well as a strong need to adapt the infrastructure to reduce vulnerability. The analyzed infrastructure has not been adapted to the risk of floods. This situation warns of the obsolescence of predominant typologies, which are constantly affected either in winter or summer times. Some solutions as the incorporation of new flood-adapted building typologies, relocate critical infrastructure and services, incorporate soft coastal defenses solutions, together with a reinforcement of codes, are discussed in order to reduce the effects of future extreme wind wave events.
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    LiDAR and GPR Data Reveal The Holocene Evolution of a Strandplain in a Tectonically Active Coast
    (2025) Martínez Reyes, Carolina Del Pilar; Araya Cornejo, Cristian Iván; Aedo, Diego; Melnick, Daniel
    This study investigates the Holocene evolution of the Laraquete-Carampangue strandplain (LCS) on the tectonically active coast of south-central Chile using Ground Penetrating Radar (GPR) and LiDAR data. Laraquete-Carampangue strandplain (LCS), on the tectonically active coast of south-central Chile, is a rare accretionary feature in a region dominated by rocky shorelines and limited sediment supply. LiDAR-derived digital elevation model reveals a complex geomorphology comprising 52 beach ridges, aeolian dunes, and fluvial paleochannels, while GPR radargrams uncover marine and aeolian facies influenced by past seismic and climatic events. We interpret these units in the frame of past seismic and climatic events. Our geomorphological and stratigraphic findings suggest that the strandplain progradation was driven by relative sea-level changes associated with past seismic cycles and Holocene climate change. We propose that the transition from drier to humid conditions in the late Holocene triggered the onset of dune formation at the end of the Little Ice Age. This integrated approach highlights the interplay of tectonic and climatic forcings in shaping coastal landforms, offering insights into their long-term response to environmental change.