Essays about: "volcanic ash."

Showing result 1 - 5 of 10 essays containing the words volcanic ash..

  1. 1. Analysis of the Stratospheric Aerosol Load After the 2019 Raikoke Eruption

    University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Author : Felicia Carlborg; [2021]
    Keywords : Volcanic Climate Impact; Raikoke; CALIPSO; Satellite; Stratospheric Aerosols; Radiative Forcing; Aerosol Optical Depth; Physics and Astronomy;

    Abstract : The stratospheric aerosol load after the eruption of Raikoke in 2019 have been analysed with satellite data from the CALIPSO satellite. The goal was to see how much the stratospheric aerosol load increased due to the Brewer Dobson circulation, and further, how this affected the stratospheric aerosol optical depth (AOD), and the corresponding radiative forcing (RF). READ MORE

  3. 2. Climate enhanced concrete in the civil engineering industry

    University essay from KTH/Betongbyggnad

    Author : Daniel Hofgård; John Sundkvist; [2020]
    Keywords : Alternative binders; carbon dioxide emissions; concrete for bridges; hydropower structures; wind powerplant foundations; GGBS; fly ash; material parameters; silica fume; trass; volcanic ash.; Alternativa bindemedel; vindkraftsfundament; brobetong; GGBS; flygaska; koldioxidutsläpp; mald granulerad masugnsslagg; materialparametrar; silikastoft; trass; vattenbyggnadsbetong; vulkanaska;

    Abstract : In 2017, the Swedish Parliament stated a new climate law with the goal that Sweden should be climate neutral by 2045. The concrete industry has developed a roadmap on how the goal for 2045 can be achieved, where one way to reduce the carbon emissions from concrete is by replacing a part of the cement clinker with alternative binders in the concrete mix. READ MORE

  4. 3. The late Holoce 14C reservoir age in the Chukchi Sea as inferred from tephra in marine sediments

    University essay from Stockholms universitet/Institutionen för geologiska vetenskaper

    Author : Aron Varhelyi; [2016]
    Keywords : Tephra; Aniakchak; Holocene; Chukchi Sea;

    Abstract : Volcanic ash, or tephra, blankets the local and regional landscape following a volcanic eruption. If this ash layer is preserved and identified, it can act as a time synchronous marker bed (isochron) for correlation between marine, terrestrial, glacial and lacustrine deposits. READ MORE

  5. 4. Transportation and deposition of volcanic ash from Iceland to the Arctic

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Author : Josefin Jönsson; [2014]
    Keywords : Grímsvötn 2011; volcanic eruption; the Arctic; transportation and deposition of volcanic ash; albedo; air traffic; Physics and Astronomy; Earth and Environmental Sciences;

    Abstract : As the Arctic will become more available to shipping traffic in the future, given the current trend of diminishing ice sheets continues, the emission of particles and gases originating from ships will increase in the Arctic. The emission of particles and gases can affect the sensitive Arctic environment in many ways, e.g. READ MORE

  6. 5. Distribution and Mobility of Arsenic in the Shallow Aquifers of Northeastern of La Pampa Province, Argentine.

    University essay from KTH/Mark- och vattenteknik

    Author : Anna Aullón; [2013]
    Keywords : Arsenic; fluoride; shallow aquifer; La Pampa; loess sediments and volcanic ash;

    Abstract : More than two million people in the Chaco-Pampean plain in central Argentina are affected by high As levels in groundwater. The concentrations of As are far exceeding the WHO standard limit for safe drinking water of 0.1 μg/L and the provisional Argentinean limit of 0.5 μg/L. READ MORE