Results 31 to 40 of about 93 (92)
Temporal variations in characteristics of the El Chichón stratospheric cloud
Geofísica Internacional, 1984 Durante el periodo comprendido desde abril hasta diciembre de 1982 se hicieron mediciones y muestreos in situ de la nube de la erupción de El Chichón, a 18 - 21 km de altitud, para examinar las características físicas y químicas de las partículas de ...
R.L. Chuan, D.C. Woods
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Geofísica Internacional, 1984 Durante el verano y el otoño de 1982, y también durante el verano y el otoño de 1963, la temperatura a 30 mbar subió más de tres desviaciones estándar sobre el promedio de 18 años en latitudes tropicales. Estos calentamientos se atribuyen a los aerosoles
K. Labitzke, B. Naujokat
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Monitoring volcanoes in Mexico
Volcanica, 2021 Mexico has at least 46 volcanic centers (including monogenetic volcanic fields) that are considered active or potentially active. Due to the federal governance of the country, the Centro Nacional de Prevención de Desastres (CENAPRED) is the entity ...
Ramón Espinasa-Pereña +7 more
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Eruption Column Modeling of Explosive Volcanism on Venus
Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.Abstract Volcanism on Venus has never been directly observed, but several measurements indicate present‐day activity. Volcanism could potentially play a role in climatic processes on Venus, especially in the sulfur cycle like on Earth. Observation of volcanic activity is the primary objective of future Venus spacecraft. However, there are many unknowns
Maxence Lefèvre +2 more
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Geofísica Internacional, 1987 Los estudios petrográficos, macroquímicos y por microsonda de una secuencia de rocas del Volcán El Chichón, Chiapas, México, indican que los materiales “juveniles” de las erupciones de 1982 y las anteriores presentan esencialmente la misma química y la ...
J. J. Macgee +2 more
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Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.Abstract Assessing Radiative Power (RP) output is essential for monitoring and understanding volcanic systems. While Mid‐Infrared channels are used to assess thermal outputs at volcanoes exhibiting effusive activity, Thermal‐InfraRed (TIR) bands are better suited for measuring moderate‐to‐low‐temperature (≲600 K) features, such as those associated with
Simone Aveni +4 more
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Geofísica Internacional, 1984 Reportamos mediciones lidar de la perturbación en la carga de polvo atmosférico producida por la erupción volcánica de El Chichón. Las mediciones abarcan un período de 19 meses y se toman en una estación de latitud media.
A. D´ Altorio, G. Visconti
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Journal of Geophysical Research: Solid Earth, Volume 130, Issue 1, January 2025.Abstract Pyroclastic density currents (PDCs) present significant hazards due to their high temperatures and dynamic pressures. Accurate estimation of dynamic pressure, vital for assessing potential damage, requires knowledge of the vertical variations of velocity and particle concentration within the PDC, particularly in the first few meters of the ...
B. Keim, M. de’ Michieli Vitturi
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Geofísica Internacional, 1989 Este libro sobre "Volcanismo Explosivo" está formado por una colección de trece capítulos o artículos que, desde diferentes enfoques y disciplinas discuten uno de los fenómenos volcánicos de más alta peligrosidad.
J. Urrutia Fucugauchi +1 more
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Dynamics, Monitoring, and Forecasting of Tephra in the Atmosphere
Reviews of Geophysics, Volume 62, Issue 4, December 2024.Abstract Explosive volcanic eruptions inject hot mixtures of solid particles (tephra) and gasses into the atmosphere. Entraining ambient air, these mixtures can form plumes rising tens of kilometers until they spread laterally, forming umbrella clouds. While the largest clasts tend to settle in proximity to the volcano, the smallest fragments, commonly
F. Pardini +7 more
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