Resultados de Búsqueda por Autor

1

objeto de conferencia

Instituto Milenio de Investigación en Riesgo Volcánico - Ckelar Volcanes: Investigación, vigilancia volcánica y contribuciones a la mitigación del riesgo

Publicado por
Aguilera, Felipe, Salazar, Pablo, Diaz, Daniel, González, Rodrigo, Oliveros, Verónica, Shrivastava, Mahesh, Tapia, Joseline, Inostroza, Manuel, Layana, Susana, Ureta, Gabriel, Sala

Publicado 2023

Enlace

Diversas erupciones a lo largo de toda Latinoamérica en los últimos 5 siglos han tenido efectos mayores sobre la población, flora, fauna, infraestructura y medio ambiente, siendo algunas de ellas altamente significativas, tales como los casos de Huaynaputina (Perú, 1600), Santa María (Guatemala, 1902), Quizapu (Chile, 1932), Parícutin (México, 1943-1952), El Chichón (México, 1982), Nevado del Ruiz (Colombia, 1985), Lonquimay (Chile, 1988-1989), Hudson (Chile, 1991), Chaitén (Chile, 2008), Fuego (Guatemela, 2018). En algunos de estos casos, dichas erupciones condujeron a los países involucrados a crear y/o reforzar redes de vigilancia volcánica, a través de observatorios volcanológicos. Actualmente, en Latinoamérica existen 17 observatorios volcánicos distribuidos en 10 países distintos, los cuales son conducidos por instituciones gubernamentales, universidades, o por col...

2

objeto de conferencia

Neogene activity of the Barrancas Bancas Fault and its relationship with Hydrothermal and volcanic activity

Publicado por
Jaldín, Diego, González, Rodrigo, Benavente Escobar, Carlos Lenin, Aguilera, Felipe, Garate, F.

Publicado 2019

Enlace

Trabajo presentado en el 8th International Symposium on Andean Geodynamics (ISAG), realizado en Quito-Ecuador, del 24-26 setiembre, 2019. Evento organizado por el Instituto Geofísico, Escuela Politécnica Nacional (IG-EPN) del Ecuador, y el French Institut de Recherche pour le Développement (IRD).

3

artículo

Origins and fluxes of gas emissions from the Central Volcanic Zone of the Andes

Publicado por
de Moor, J. Maarten, Barry, Peter H., Rodríguez, Alejandro, Aguilera, Felipe, Aguilera, Mauricio, González, Cristóbal, Layana, Susana, Chiodi, Agostina L., Apaza Choquehuayta, Fredy Erlingtton, Masías Alvarez, Pablo Jorge, Kern, Christoph, Barnes, Jaime D., Cullen, Jeffrey T., Bastoni, Deborah, Bastianoni, Alessia Benedicta, Cascone, Martina, Jimenez, Christofer, Salas Navarro, Jessica, Ramírez, Carlos J., Jessen, Gerdhard L., Giovannelli, Donato, Lloyd, Karen G.

Publicado 2025

Enlace

We present geochemical data from gas samples from ~1200 km of arc in the Central Volcanic Zone of the Andes (CVZA), the volcanic arc with the thickest (~70 km) continental crust globally. The primary goals of this study are to characterize and understand how magmatic gases interact with hydrothermal systems, assess the origins of the major gas species, and constrain gas emission rates. To this end, we use gas chemistry, isotope compositions of H, O, He, C, and S, and SO2 fluxes from the CVZA. Gas and isotope ratios (CO2/ST, CO2/CH4, H2O/ST, δ13C, δ34S, 3He/4He) vary dramatically as magmatic gases are progressively affected by hydrothermal processes, reflecting removal and crustal sequestration of reactive species (e.g., S) and addition of less reactive meteoric and crustal components (e.g., He). The observed variations are similar in magnitude to those expected during the magmatic reac...

4

artículo

Carbon, nitrogen, and noble gas isotopes reveal deep volatile signatures in thermal springs in the Central Volcanic Zone (CVZ) of the Andes

Publicado por
Barry, Peter H., de Moor, J. Maarten, Broadley, Michael W., Seltzer, Alan M., Bekaert, David V., Patil, K., Bartels, C. G.E., Young, Edward D., Longworth, Brett E., Barosa, Bernardo, Bastianoni, Alessia Benedicta, Bastoni, Deborah, Cascone, Martina, Turner, Stephen J., Tyne, Rebecca L., Anderson, Molly K., Li, Kan, Curtice, Joshua M., Kumar, Naveen, Jessen, Gerdhard L., Blamey, Jenny M., Ramírez, Carlos J., Chiodi, Agostina L., Aguilera, Felipe A., Layana, Susana, González, Cristóbal, Aguilera, Moisés A., Masías Alvarez, Pablo Jorge, Marty, Bernard, Lloyd, Karen G., Giovannelli, Donato

Publicado 2025

Enlace

In subduction zones, thermal springs release deeply-sourced volatiles from Earth's mantle, crust, and/or subducted slab-derived material. The origin and apparent ages of these volatiles are important for understanding the deep volatile cycle, which in turn affects the distribution of microbial life in the subsurface. Here, we report carbon (13C, 14C), noble gas (He, Ne, Ar, Kr and Xe), and clumped nitrogen isotope data in gas and water samples from thermal springs within the Central Volcanic Zone (CVZ) of the Andean Convergent Margin (ACM). He isotopes show that CVZ gases are predominantly sourced from the crust (∼77 %), with smaller mantle contributions (∼23 %), consistent with previous studies from the CVZ. Thermal spring samples with non-atmospheric He-Ne characteristics have low 14C activities, and are deeply derived (i.e., from the mantle and crust) and old (>22,000 years). To g...