Browsing by Author "Carraha Molina, Javiera Paz"

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    Ciudades sensibles al agua: guía de drenaje urbano sostenible para la macrozona sur de Chile: volumen I: marco conceptual, estratégico, regulatorio y territorial para la aplicación del drenaje urbano sostenible
    (Indaga, 2021) Teutsch Barros, Camila; Domínguez, Juan C.; Scheuch Pereira, Teresita; Gironás León, Jorge Alfredo; Briceño Jacques, Felipe; Vattuone Troncoso, Catalina de Los Ángeles; Riveros Cristoffanini, Andrés; Gárate Silva, Tomás Andrés; Provoste Torres, Inés; Moreno Flores, Osvaldo; Carraha Molina, Javiera Paz; Riveros Cristoffanini, Francisca Fernanda; Valdivieso Sierpe, Tomás Ignacio; Torres Etcheberry, Julieta; CEDEUS (Chile); Patagua; Fundación Legado Chile; Pontificia Universidad Católica de Chile
    Esta guía es una invitación a cambiar la mirada para transitar del gris al verde en la conceptualización de los sistemas de drenaje, resignificando el agua y sus espacios en la ciudad para aportar al desarrollo de entornos urbanos sostenibles y resilientes frente al cambio climático. La guía contiene información sobre la aplicación del drenaje sostenible en otros países, sus beneficios, el marco normativo global y nacional para su implementación, las etapas metodológicas de los procesos de planificación de este tipo de sistema, y datos contextuales de la macrozona sur del país.
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    Ciudades sensibles al agua: guía de drenaje urbano sostenible para la macrozona sur de Chile: volumen II: propuesta metodológica para la planificación, diseño e implementación de sistemas de drenaje urbano sostenible
    (Indaga, 2021) Teutsch Barros, Camila; Domínguez, Juan C.; Scheuch Pereira, Teresita; Gironás León, Jorge Alfredo; Briceño Jacques, Felipe; Vattuone Troncoso, Catalina de Los Ángeles; Riveros Cristoffanini, Andrés; Gárate Silva, Tomás Andrés; Provoste Torres, Inés; Moreno Flores, Osvaldo; Carraha Molina, Javiera Paz; Riveros Cristoffanini, Francisca Fernanda; Valdivieso Sierpe, Tomás Ignacio; Torres Etcheberry, Julieta; CEDEUS (Chile); Patagua; Fundación Legado Chile; Pontificia Universidad Católica de Chile
    Esta guía es una invitación a cambiar la mirada para transitar del gris al verde en la conceptualización de los sistemas de drenaje, resignificando el agua y sus espacios en la ciudad para aportar al desarrollo de entornos urbanos sostenibles y resilientes frente al cambio climático. La guía contiene información sobre la aplicación del drenaje sostenible en otros países, sus beneficios, el marco normativo global y nacional para su implementación, las etapas metodológicas de los procesos de planificación de este tipo de sistema, y datos contextuales de la macrozona sur del país.
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    Glacial to periglacial transition at the end of the last ice age in the subtropical semiarid Andes
    (Elsevier B.V., 2024) García B., Juan Luis; Carraha Molina, Javiera Paz; Fernández Navarro, Hans Andrés; Nussbaumer, Samuel U.; Pérez Mora, Francia Débora; Hidy, Alan J.; Gärtner-Roer, Isabelle; Haeberli, Wilfried
    Atmospheric warming and circulation reorganization at the end of the last ice age represent the most important climate change of the last 100,000 years and provide an opportunity to uncover how the southern subtropics cryosphere responded to strong changes in the global climate system. Extensive mapping and chronologic records on cryogenic landforms to better understand the association and interactions between glaciers and viscous creep of ice-rich permafrost landforms (rock glaciers) are widely missing in the region. In this paper, we reconstruct the geomorphic imprint of the Last Glacial Maximum (LGM) and the Termination I in the high Andes of the Río Limarí Basin (30–31°S) in the subtropical semiarid Andes of Chile. 74 new 10Be surface exposure dating ages constrain the timing of glaciation, deglaciation, and glacial to periglacial transition. Glacial advances occurred first by 41.2 ± 0.6 – 35.0 ± 0.5 ka during Marine Isotope Stage 3, but probably earlier also; then, a second advance occurred during the global LGM between 24.2 ± 0.4 and 18.6 ± 0.2 ka. Deglaciation by 17.6 ± 0.2 ka left extensive hummocky moraines on the main valleys. Characteristic patterns of furrows and ridges typical of rock glaciers and solifluction superimposed on the LGM hummocky moraine indicate ice-rich permafrost in glacial deposits likely between 15.5 ± 0.3 and 13.6 ± 0.3 ka. We propose that moraines deposited by LGM debris-covered glaciers served as a niche for strong seasonal frost and permafrost creep, which substantially modified the original landforms. Our results contribute to a better understanding of major transformations in an ice-rich high mountain area of the southern hemisphere where the interplay of temperature and precipitation changes drove glacial to periglacial transitions.
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    Late Pleistocene to Holocene glacial, periglacial, and paraglacial geomorphology of the upper Río Limarí basin (30-31° S) in the Andes of central Chile
    (Taylor & Francis Group, 2024) Carraha Molina, Javiera Paz; García B., Juan Luis; Nussbaumer, Samuel U.; Fernández Navarro, Hans Andrés; Gartner-Roer, Isabelle
    We present a field-based reconstruction of the geomorphology in the Subtropical Andean mountains of the Limari basin, semiarid central Chile (30-31 degrees S). Fieldwork campaigns and remote-sensing analysis served for detailed geomorphological mapping at four formerly glaciated valleys in the heads of the Combarbala and Rio Hurtado sub-basins. We identify a mosaic of glacial, periglacial, and paraglacial landforms. Glacial landforms include a massive dead-ice moraine complex, with thermokarst and debris-filled fractures suggesting former ice-cored moraine degradation. This landform is superimposed by transversal and arcuate ridges suggesting active-ice processes. Periglacial landforms such as rock glaciers, gelifluction, and protalus lobes occur in cirques and U-shaped valleys, but also on moraine deposits. Paraglacial processes are indicated by talus accumulation in those formerly glaciated slopes. The geomorphological imprint is evidence for the interaction and succession between glacial, periglacial, and paraglacial dynamics from the Late Pleistocene to the present.