Results 61 to 70 of about 1,548 (169)

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, S. Barsotti, C. Bonadonna, M. de’ Michieli Vitturi, A. Folch, L. Mastin, S. Osores, A. T. Prata   +7 more
wiley   +1 more source

Combining Visible‐ and Infrared‐Wavelength Observations With Numerical Modeling to Describe Vulcanian Eruption Plumes at Sabancaya, Peru

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 12, December 2024.
Abstract Sabancaya volcano (Peru), is a stratovolcano in the Central Volcanic Zone of the Andes. Since November 2016, it has been in constant activity, marked by daily multiple Vulcanian explosions. In this contribution, we first characterize the plumes generated by the explosions using visible‐ and infrared‐wavelength imagery, describing plume ...
R. Simionato, P. A. Jarvis, E. Rossi, A. Fries, M. Pistolesi, R. Aguilar, C. Bonadonna   +6 more
wiley   +1 more source

A Perturbative Method for Calculating the Impedance of Coils on Laminated Ferromagnetic Cores

Mathematical Problems in Engineering, Volume 2010, Issue 1, 2010., 2010
A new set of formulas for calculating the self and mutual impedances of coils on straight and closed laminated ferromagnetic cores of circular cross‐section has been derived. The obtained formulas generalize the well‐known formulas for impedances of coils on homogeneous ferromagnetic cores, for the case of laminated cores, and improve the previously ...
Serguei Maximov, Allen A. Castillo, Vicente Venegas, José L. Guardado, Enrique Melgoza, Francesco Pellicano   +5 more
wiley   +1 more source

Sound produced by the rapidly inflating Santiaguito lava dome, Guatemala

Geophysical Research Letters, 2010
Vertical inflation of the Caliente lava dome at Santiaguito (Guatemala) occurs coincidentally with the onset of explosive eruptions and produces infrasound that is generally peaked between 0.5 and 2 Hz with amplitude of up to 5 Pa (at ∼1 km from vent). Inflation of up to ∼1 m progresses rapidly (within ∼2 s) and can encompass the entire surface of the ∼
Lees, J.M., Johnson, J.B.
openaire   +1 more source

Tratamiento de aguas residuales domésticas en humedal del Barrio Santiaguito, Texcoco de Mora, México

Current Topics in Agronomic Science, 2023
Para el tratamiento de las aguas residuales se pueden emplear métodos físicos, químicos o biológicos. Los humedales artificiales son sistemas construidos específicamente para el tratamiento de las aguas residuales creando un panorama similar a las funciones de los humedales naturales, optimizando los procesos que permite la remoción de los ...
Beatriz Hernández Alonso, Langen Corlay-Chee, Erica Morales-Hernández, Santos Vázquez´-Cervantes, Alejandro Hernández-Tapia, Angelina Chamizo-Checa   +5 more
openaire   +1 more source

Pulsatory andesite lava flow at Bagana Volcano [PDF]

, 2012
Using a time series of TerraSAR-X spaceborne radar images we have measured the pulsatory motion of an andesite lava flow over a 14-month period at Bagana volcano, Papua New Guinea. Between October 2010 and December 2011, lava flowed continuously down the
Bultitude R. J., G. Wadge, Harris A. J. L., I. Itikarai, LaPrade G. L., S. Saunders   +5 more
core   +1 more source

Efecto de Estrés Hídrico en la Actividad Enzimática en dos Cultivares de Fresa (Fragaria x ananassa)

Terra Latinoamericana
La fresa (Fragaria x ananassa) es un fruto producido en la zona central de México. Este cultivo se ve afectado por condiciones climáticas desfavorables como la sequía. El objetivo de este estudio fue evaluar el efecto del estrés hídrico y su relación con
Diana Rocío Ruiz-Saénz, Maldonado-Rosales Miriam Ivonne, García-Nava Erika Selene, Reyes-Mérida Aníbal Uriel, Pineda-Santos Alicia, Sánchez-Valdés Jair Jesús   +5 more
doaj   +1 more source

Analytical model of small fluctuations of compressible magma with Maxwell rheology in the feeding system of a volcano. Part 1. Density oscillation

Russian Journal of Earth Sciences, 2023
The analytical mathematical model is presented that describes one of the possible mechanisms for the occurrence of long-period seismic events that are often recorded near active volcanic centers.
Radionoff Anatoly
doaj   +1 more source

Tracking and Characterization of Moving Acoustic Sources Using an Infrasound Array at Volcán Santiaguito, Guatemala [PDF]

, 2015
Active volcanic processes produce large amounts of acoustic energy within the infrasound band (0-20 Hz). Infrasound-sensitive microphones are often installed in addition to other forms of volcano monitoring equipment to increase the ability to remotely ...
Terbush, Brian R.
core   +1 more source

Ultraviolet imaging of volcanic plumes: A new paradigm in volcanology [PDF]

, 2017
Ultraviolet imaging has been applied in volcanology over the last ten years or so. This provides considerably higher temporal and spatial resolution volcanic gas emission rate data than available previously, enabling the volcanology community to ...
Aiuppa, A., Bitetto, M., D Aleo, R., McGonigle, A.J.S., Pering, T.D., Tamburello, G., Wilkes, T.C., Willmott, J.R.   +7 more
core   +2 more sources