Processes and threats related to natural hazards play an important role in the evolution of Earth human history. The purpose this study is investigate magnetic field variations measured at low orbit (LEO) altitudes possibly associated with earthquakes, volcanic eruptions, artificial outbursts. We focus on two missions well equipped magnetometer packages, China Seismo-Electromagnetic Satellite (...

Active volcanic islands are particularly vulnerable to multi-risk natural hazards, many of which anticipated become more severe as a result climate change. It is crucial create and put into action adequate risk mitigation plans based on comprehensive long-term hazard assessments that include nature-based solutions in order improve societal safety these islands. Herein, we study the case Tenerif...

Volcanic caves are filled with colorful microbial mats on the walls and ceilings. These volcanic caves are found worldwide, and studies are finding vast bacteria diversity within these caves. One group of bacteria that can be abundant in volcanic caves, as well as other caves, is Actinobacteria. As Actinobacteria are valued for their ability to produce a variety of secondary metabolites, rare a...

Mt. Cameroon is one of the most active volcanoes in Africa and poses a possible threat to about half a million people in the area, yet knowledge of the volcano's underlying magma supply system is sparse. To characterize Mt. Cameroon's magma plumbing system, we employed mineral-melt equilibrium thermobarometry on the products of the volcano's two most recent eruptions of 1999 and 2000. Our resul...

Classes of atmospheric aerosols and their main sources, distributions of tropospheric aerosol by size and mass, their physico-chemical composition and principal optical properties in various spectral bands are described. Stratospheric aerosols in “quiet” and “disturbed” periods after the major volcanic eruptions, their interactions with clouds and of underlying surface radiative properties affe...

Volcanic eruptions demonstrate that our planet is alive and evolving. Take photos of volcanoes around the Earth and you will see that they all look different, but also share important features. Some volcanoes come in perfect conical shapes, while others are much flatter and harder to spot. This is just like humans, some are tall and others are short, or some have dark hair while others have lig...

Volcanoes are true wonders of the planet. Managers volcanic protected areas face dual challenge protecting landscape from overuse and damage, visitors local residents range geophysical risks presented by activity. Without clear recognition how volcano works, there is potential that risk hazardous conditions (e.g., eruptions, gas emissions, fumarolic activity, landslides, seismic other hazards) ...

This article focuses on communities that reoccupy territories affected by volcanic eruptions to extend understanding of people's social appropriation environments exposed natural hazards. We take as a case study three rural settlements several from the Carran-Los Venados and Puyehue-Cordón Caulle systems (Southern Andes, Chile). Using an ethnographic observation scale, we engage with local acto...