latest news: Volcanoes
Showing 10 of 77 Articles:
Anomalous concentrations of arsenic, fluoride and radon in volcanic-sedimentary aquifers from central Italy: Quality indexes for management of the water resource.
Highlights Volcanic-sedimentary aquifers from Central Italy were analyzed for As, F? and 222Rn. Water-rock interaction and input of thermal fluids are sources of geogenic pollutants. High contents of geogenic pollutants were pertaining to the volcanic aquifers. Quality Indexes (QIs) were obtained by combining the As, F? and 222Rn concentrations. QI distribution maps can be used […]Italy Volcanoes
Dental fluorosis in the Vesuvius towns in AD 79: a multidisciplinary approach.
Abstract BACKGROUND: Endemic fluorosis induced by high concentrations of fluoride in groundwater and soils is a major health problem in several countries, particularly in volcanic areas. AIM: To evaluate the occurrence of dental fluorosis resulting from exposure to high levels of environmental fluoride in 79 AD Herculaneum and close Vesuvius towns. SUBJECTS AND METHODS: The […]Italy Volcanoes
Fluoride removal from natural volcanic underground water by an electrocoagulation process: Parametric and cost evaluations.
Highlights Use of electrocoagulation technique for the remediation of fluoride in groundwater. Performance intensification ways and cost evaluation are comprehensively discussed. Operating conditions have been optimized in batch and continuous-flow regimes. Percentage of fluoride removal varied between 68.9 and 84.7%. Final fluoride concentration below the legal limit of 1.5 mg/L in all cases. Abstract Excessive […]Spain Volcanoes Water Treatment
Kilauea: Volcanic Pollution Probed During Eruption Pause
(BIVN) – Kilauea Volcano is not erupting, and the USGS Volcano Alert level is at NORMAL. As scientists and affiliates with the USGS Hawaiian Volcano Observatory wrote in this week’s Volcano Watch article, its a great time to do some research. The end of Kilauea’s 2018 eruption this past September was accompanied by an enormous […]United States, Hawaii Volcanoes
Geochemical occurrence of arsenic, vanadium and fluoride in groundwater of Patagonia, Argentina: Sources and mobilization processes
Highlights The As, V and F presence in the groundwater of Peninsula Valdes is due to a natural origin. Volcanic particles and iron oxides of the Miocene sediments shows the highest As concentrations. Groundwater pH conditions the volcanic shards dissolution and therefore the As, V and F release. Abstract Contamination of groundwater in different parts […]Argentina Volcanoes
Kilauea Hazard Assessments Include Analyses of Salts on Volcanic Ash
Ash from an explosive event at Halema‘uma‘u on May 15, 2018, was blown by trade winds to the southwest, where it fell from the plume and blanketed the Ka?? Desert landscape. Samples of this ash were collected for ash leachate analyses as part of the assessment of hazards from K?lauea Volcano’s eruption. PC: USGS photo […]United States, Hawaii Volcanoes
Ash attack from Vanuatu volcano forces residents from their homes
Ambae volcano (another name for Manaro Voui) and its crater lake, Lake Voui last month. The lake has been split into two due to the growth of the new volcanic cone. The visible landscape is covered with thick ash deposits. Photo: Natalia Deligne Ash fall and acid rain on Ambae has damaged trees and buried […]New Zealand Volcanoes
“Is the Monster Awakening?” Threat Level Raised for Europe’s Supervolcano, Campi Flegrei Last Erupted in 1538
Campi Flegrei, “burning fields”, is a supervolcano that consists of a vast and complex network of underground chambers that formed hundreds of thousands of years ago, stretching from the outskirts of Naples to underneath the Mediterranean Sea and last erupted in 1538. According to the BBC, about half a million people live in its seven-mile-long […]Italy Volcanoes
Would a supervolcano eruption knock us out?
Throughout our planet’s history, massive volcanic eruptions have devastated life. Could one bring an end to human civilisation? In the Bay of Naples, Europe’s most notorious giant is showing signs of reawakening from its long slumber. Campi Flegrei, a name that aptly translates as “burning fields”, is a supervolcano. It consists of a vast and […]Italy Volcanoes
Dust in the wind: How climate variables and volcanic dust affect rates of tooth wear in Central American howling mo
Abstract OBJECTIVES: Two factors have been considered important contributors to tooth wear: dietary abrasives in plant foods themselves and mineral particles adhering to ingested food. Each factor limits the functional life of teeth. Cross-population studies of wear rates in a single species living in different habitats may point to the relative contributions of each factor. […]Nicaragua Volcanoes