Repositorio Digital Sernageomin
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Evaluación de remociones en masa Avenida Latorre, comuna de Talcahuano, región del Biobio
Full text linkInforme Técnico -- Unidad Ejecutora: Unidad de Asistencias Técnicas y Emergencias Geológicas14 p
Geological heritage sites assessment in the northern flank of the Calbuco volcano (Southern Andes, Chile)
No full textCalbuco volcano (41.3° S, Southern Andes) ranks second in the Chilean volcanic risk ranking. The products of Calbuco’s last eruption (April 22-23, 2015) severely affected the surroundings of the volcano, particularly the Ensenada village (~1,500 inhab.), evidencing a growing need for effective volcanic risk management and mitigation. The geological study of volcanic deposits and landforms is a key step in reconstructing past volcanic eruptions and for the evaluation of volcanic hazards and associated risks. Additionally, well-preserved and easily accessible volcanic deposits can be considered as geological heritage sites (geosites) that could be used to educate communities and visitors about geological hazards and volcanic risk through different outreach, educational, and touristic activities. In the northern flank of Calbuco, a series of protected public and private areas (Llanquihue National Reserve, Valle Los Ulmos Park, and Volcanes Park) foster the conservation of natural heritage and facilitate the accessibility to volcanic deposits. Our contribution therefore assesses the geological heritage potential of the northern flank of the Calbuco volcano through literature review, geological mapping, and stratigraphic and petrographic studies of recent eruptive deposits. The identified geosites were scored and ranked through a quantitative procedure. The top three-ranked geosites hold high scientific value and good accessibility conditions. These sites may sustain a geoconservation strategy based on scientific, educational, and touristic activities, contributing thus to volcanic risk reduction in the area.pp.357-37
Geological heritage sites assessment in the northern flank of the Calbuco volcano (Southern Andes, Chile)
No full textCalbuco volcano (41.3° S, Southern Andes) ranks second in the Chilean volcanic risk ranking. The products of Calbuco’s last eruption (April 22-23, 2015) severely affected the surroundings of the volcano, particularly the Ensenada village (~1,500 inhab.), evidencing a growing need for effective volcanic risk management and mitigation. The geological study of volcanic deposits and landforms is a key step in reconstructing past volcanic eruptions and for the evaluation of volcanic hazards and associated risks. Additionally, well-preserved and easily accessible volcanic deposits can be considered as geological heritage sites (geosites) that could be used to educate communities and visitors about geological hazards and volcanic risk through different outreach, educational, and touristic activities. In the northern flank of Calbuco, a series of protected public and private areas (Llanquihue National Reserve, Valle Los Ulmos Park, and Volcanes Park) foster the conservation of natural heritage and facilitate the accessibility to volcanic deposits. Our contribution therefore assesses the geological heritage potential of the northern flank of the Calbuco volcano through literature review, geological mapping, and stratigraphic and petrographic studies of recent eruptive deposits. The identified geosites were scored and ranked through a quantitative procedure. The top three-ranked geosites hold high scientific value and good accessibility conditions. These sites may sustain a geoconservation strategy based on scientific, educational, and touristic activities, contributing thus to volcanic risk reduction in the area.pp.357-37
Antecedentes hidrogeológicos en el terreno destinado a Posta de Salud Rural en isla Caucahue, Comuna de Quemchi, Región de Los Lagos
No full textInforme Técnico -- Unidad Ejecutora: Dirección Regional Los Lagos10 p
Old and modern volcanic depictions as evidence of communities-volcanoes mutualism in Colombia
No full textStudying the different ways in which the concept of volcanism is represented is crucial in the understanding of communities’ perception of the volcanic phenomena. In this contribution, 129 modern (2021-2023) depictions of volcanoes in Colombia between latitudes 0.82 and 5.96° N are described and classified into different contexts of use. Prehispanic depictions of volcanism are investigated in rock art sites (3 pictographs and 33 petroglyphs), and 15 distinct mythical narratives compiled and confirmed through interviews in the State of Nariño. We suggest that many of the rock art sites contain motifs that are reminiscent of the idea of volcanism, and that many of the folk tales include allusions to the volcanic concept. By collating the information contained in modern and older depictions, a link is established with the reality of the volcanic phenomena that shows how mutualism takes root between communities and volcanoes. The beneficial aspects derived from this relationship influence the perception of volcanic hazards in the region.pp.86-16
Susceptibilidad de remociones en masa en la provincia de Palena, región de Los Lagos, Chile
Full text linkInforme Registrado IR-24-11894 p
Evaluación de los recursos geotérmicos de muy baja entalpía para calefacción y agua caliente sanitaria con bombas de calor en establecimientos educacionales de la región de Los Lagos
No full textInforme Técnico -- Unidad Ejecutora: Unidades de Recursos Geotérmicos, Santiago49 p
Evaluation of secondary effects after the January 18, 2021, Mw 6.5 earthquake in San Juan, Argentina : Determination of the seismic intensity through the ESI-2007 scale
Full text linkThis study focuses on evaluating the numerous secondary effects, such as mass wasting and soil liquefaction, caused by the Mw 6.5 earthquake that occurred on January 18, 2021, in the province of San Juan, Argentina. The epicenter was located on the eastern flank of the Las Osamentas range. Although it caused significant damage to buildings and cultivated areas, there were no fatalities. The aim is to identify and describe these secondary effects and determine the seismic intensity of the event using the INQUA’s (International Union for Quaternary Research) 2007 ESI (Environmental Seismic Intensity) scale. Field assessments were conducted shortly after the earthquake, documenting liquefaction and mass wasting structures through direct observations, digital photographs, GPS (Global Positioning System) localization, and data inventory, among other methods. This procedure validates a protocol for future applications in estimating seismic intensities for sparsely populated areas. Additionally, the study seeks to confirm the scientific and cultural importance of these ephemeral structures as assets that could be protected, therefore contributing to regional development.pp.518-53
Evaluación de peligro de remoción en masa en la localidad de Yeco, ruta T-20, comuna de Mariquina, región de Los Ríos
No full textInforme Técnico -- Unidad Ejecutora: Unidad de Geología Regional, Dirección Regional de Los Ríos, Valdivia16 p
The geology and geomorphology of Seymour (Marambio) Island, Antarctica
No full textMontes, M.; Nozal, F.; Olivero, E.; Gallastegui, G.; Santillana, S.; Maestro, A.; López-Martínez, J.; González, L. and Martín-Serrano, A. (2019). Geología y Geomorfología de isla Marambio (Seymour). (Montes, M.; Nozal F. y Santillana, S., Eds.). Serie Cartográfica Geocientífica Antártica; 1:20.000, 1ª edición. Acompañado de mapas. Madrid-Instituto Geológico y Minero de España; Buenos Aires-Instituto Antártico Argentino, 300 p. 236 ilustraciones, 6 tablas, 2 mapas. ISBN 978-84-9138-083-2. EUR 60,00pp.559-56