Search
Now showing items 11-20 of 76
New insights into Kawah Ijen’s volcanic system from the wet volcano workshop experiment
(Geological Society London Special Publications, 2016-02-25)
Volcanoes with crater lakes and/or extensive hydrothermal systems pose significant challenges with respect to monitoring and forecasting eruptions, but they also provide new opportunities to enhance our understanding of ...
Microbial Community Structure Along a Horizontal Oxygen Gradient in a Costa Rican Volcanic Influenced Acid Rock Drainage System
(Springer, 2020)
We describe the geochemistry and microbial diversity of a pristine environment that resembles an acid rock drainage (ARD) but it is actually the result of hydrothermal and volcanic influences. We designate this environment, ...
Morphological and geochemical features of crater lakes in Costa Rica: an overview
(Journal of limnology, 2009)
This paper describes the compositional and morphological features of the crater lakes found in the volcanoes of Rincón de La Vieja, Poás, Irazú, Congo and Tenorio volcanoes (Costa Rica). As evidenced by the distribution ...
Halogen activation in the plume of Masaya volcano: field observations and box model investigations
(Atmospheric Chemistry and Physics, 2020)
Volcanic emissions are a source of halogens to the atmosphere. Rapid reactions convert the initially emitted hydrogen halides (HCl, HBr, HI) into reactive species e.g. BrO, Br2, BrCl, ClO, OClO and IO. The activation ...
Scattering of light by colloidal aluminosilicate particles Produces the unusual sky-blue color of Río Celeste (Tenorio Volcano Complex, Costa Rica)
(2013-09-18)
Río Celeste (Sky-Blue River) in Tenorio National Park (Costa Rica), a river that derives from the confluence and mixing of two colorless streams-Río Buenavista (Buenavista River) and Quebrada Agria (Sour Creek)-is renowned ...
Sismo de Capellades 01 diciembre 2016, Cartago, Costa Rica
(REVISTA GEOGRÁFICA DE AMÉRICA CENTRAL, 2018)
En este trabajo se hace una descripción de la fuente sísmica del sismo de Capellades, provincia de Cartago, Costa Rica, del 1 de diciembre de 2016, 00:25:20 hora UTC. Se estudian los parámetros de la fuente, centroide, ...
Recurrencia de sismos en el Valle Central de Costa Rica
(REVISTA GEOGRÁFICA DE AMÉRICA CENTRAL, 2018)
En los periodos 1910-1912, 1951-1955 y 1990-1993 se localizaron en el Valle Central de Costa Rica sismos superficiales importantes, por su magnitud y daños causados en la población, estructura y paisaje. La recurrencia de ...
Transport properties of glassy and molten lavas as a function of temperature and composition
(Elsevier, 2016-11-15)
We provide measurements of thermal diffusivity (D), heat capacity (CP), and viscosity (η) for 12 remelted natural lavas and 4 synthetic glasses and melts, ranging in composition from leucogranite to low-silica basalt, and ...
Renewed Explosive Phreatomagmatic Activity at Poás Volcano, Costa Rica in April 2017
(Frontiers in Earth Science, 2018-10-16)
Phreatic and phreatomagmatic eruptions at volcanoes often present no short termprecursory activity, making them a challenge to forecast. Poás volcano, Costa Rica, exhibits cyclic activity with phreatic and some phreatomagmatic ...
Far-field triggering of foreshocks near the nucleation zone of the 5 September 2012 (MW 7.6) Nicoya Peninsula, Costa Rica earthquak
(Elsevier, 2015-12-01)
On 5 September 2012, a moment magnitude (MW) 7.6 earthquake occurred directly beneath the Nicoya Peninsula, an area with dense seismic and geodetic network coverage. The mainshock ruptured a portion of a previously identified ...