Opin vísindi

Browsing by Subject "Jarðhiti"

Browsing by Subject "Jarðhiti"

Sort by: Order: Results:

  • Bjarnason, Ingi Þorleifur (Hið íslenska náttúrufræðifélag, 1997)
    Heitur reitur er landsvæði sem einkennist af mikilli eldvirkni og jarðhita og stendur hátt yfir umhverfið. Ísland er einn af stærstu heitu reitum jarðar og gnæfir 2-4 km yfir venjulega hæð Norður-Atlantshafshryggjarins sem gengur í gegnum landið. Markmið ...
  • Fiebig, J.; Stefansson, Andri; Ricci, A.; Tassi, F.; Viveiros, F.; Silva, S.; Lopez, T.M.; Schreiber, C.; Hofmann, S.; Mountain, B.W. (European Association of Geochemistry, 2019-07-29)
    Abiotic formation of n-alkane hydrocarbons has been postulated to occur within Earth's crust. Apparent evidence was primarily based on uncommon carbon and hydrogen isotope distribution patterns that set methane and its higher chain homologues apart ...
  • Santanicchia, Massimo (IIT Bombay Publications, 2015-12)
    In the aftermath of the financial crisis that invested Iceland starting in September 2008 the town of Hveragerði decided to launch at the end of 2008 a national competition to gather ideas on how a more sustainable future could be designed and implemented ...
  • Cook, David; Davidsdottir, Brynhildur; Malinauskaite, Laura (Elsevier BV, 2020-12)
    This paper presents the first study in the academic literature to explore the various stages in the formation of geothermal ES and their interactions between the biosphere and anthroposphere. This is achieved through the development of the first ES ...
  • Thorhallsson, Andri Isak; Stefansson, Andri; Kovalov, Danyil; Karlsdóttir, Sigrún (Elsevier BV, 2020-05)
    This paper reports the results of corrosion study for carbon steel, austenitic stainless steel, as well as titanium and nickel-based alloys which were tested in a simulated superheated geothermal environment (SSGE) in flow-through reactors to investigate ...
  • Türke, Andreas; Jackson, Marie D.; Bach, Wolfgang; Kahl, Wolf-Achim; Grzybowski, Brian; Marshall, Beau; Gudmundsson, Magnus Tumi; Jørgensen, Steffen Leth (Copernicus GmbH, 2019-06-12)
    Surtsey, the youngest of the islands of Vestmannaeyjar, is an oceanic volcano created by explosive basaltic eruptions during 1963-1967 off the southern coast of Iceland. The subsurface deposits of the volcano were first sampled by a cored borehole in ...
  • Maljanen, Marja; Bhattarai, Hem Raj; Biasi, Christina; Sigurdsson, Bjarni D. (Agricultural University of Iceland, 2018)
    Geothermal areas can be local sources of greenhouse gases, both directly from the geothermal system or because of soil warming effects on biological sources. In this study we repeated field measurements methane (CH4) and nitrous oxide (N2O) fluxes along ...
  • Lévy, Léa (Paris Sciences et Lettres, Laboratoire de Géologie de l'Ecole Normale Supérieure and University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-04)
    The electrical signature of volcanoes is affected by several characteristics of rocks: volume and salinity of pore fluid, abundance of conductive minerals, rock temperature and presence of molten crust (magma). Electromagnetic soundings are widely used ...
  • Jónsson, Örn Daníel; Rastrick, Ólafur (Springer Nature, 2017-03-08)
    Background: The article explores the significance of abundant geothermal resources Icelanders enjoy, the comfort of inexpensively heated homes and easily accessible year-round public spaces where young and old can gather irrespective of social standing, ...
  • Holmstrup, Martin; Ehlers, Bodil; Slotsbo, Stine; Ilieva-Makulec, Krassimira; Sigurdsson, Bjarni D.; Leblans, Niki; Ellers, Jacintha; Berg, Matty P. (Wiley, 2018-02-28)
    1. Human activities have caused global changes of atmospheric chemistry resulting in increased temperature especially in the colder regions of the northern hemisphere. Since warming of the environment can have drastic effects on terrestrial ecosys-tems ...
  • Heřmanská, Matylda (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-03)
    Supercritical fluids have been reported from both rift and subduction-related geothermal systems. They typically form in the vicinity of magmatic intrusions at the roots of geothermal systems upon conductive heating and boiling of the subcritical ...
  • Kristbjornsdottir, Adalbjorg (University of Iceland, School of Health Sciences, Faculty of Medicine, 2016-12)
    Background and aims: Previous studies in geothermal and volcanic areas have shown high risk of certain types of cancers. The aim was to study the association between residence in geothermal areas and the incidence and mortality of cancer in ...
  • Sigurdsson, Bjarni D.; Leblans, Niki; Dauwe, Steven; Guðmundsdóttir, Elín; Gundersen, Per; G. Gunnarsdóttir, Gunnhildur Eva; Holmstrup, Martin; Ilieva-Makulec, Krassimira; Kätterer, Thomas; Marteinsdóttir, Bryndís; Maljanen, Marja; Oddsdóttir, Edda Sigurdís; Ostonen, Ivika; Penuelas, Josep; Poeplau, Christopher; Richter, Andreas; Sigurðsson, Páll; van Bodegom, Peter; Wallander, Håkan; Weedon, James; Janssens, Ivan (Agricultural University of Iceland, 2016)
    This article describes how natural geothermal soil temperature gradients in Iceland have been used to study terrestrial ecosystem responses to soil warming. The experimental approach was evaluated at three study sites in southern Iceland; one grassland ...
  • Marañón Jiménez, Sara; Soong, Jennifer; Leblans, Niki; Sigurdsson, Bjarni D.; Penuelas, Josep; Richter, Andreas; Asensio, Dolores; Fransén, Erik A.; Janssens, Ivan (Springer Nature, 2018-04-17)
    Increasing temperatures can accelerate soil organic matter decomposition and release large amounts of CO2 to the atmosphere, potentially inducing positive warming feedbacks. Alterations to the temperature sensitivity and physiological functioning of ...
  • Neely, Rebecca Anna (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2017)
    Molybdenum isotopes are used to quantify changes in Earth’s paleoredox conditions but their application relies upon a simplified model in which rivers dominate the ocean input with minor contributions from hydrothermal fluids. The effect of groundwater ...
  • Cook, David; Fazeli, Reza; Davidsdottir, Brynhildur (Elsevier BV, 2019-06)
    Developing geothermal power projects may lead to trade-offs, whereby the economic and social benefits of the venture are difficult to compare with its cultural consequences, which include impacts to ES such as aesthetics, spiritual enrichment and ...
  • Jóhannesson, Tómas; Pálmason, Bolli; Hjartarson, Árni; Jarosch, Alexander H.; Magnússon, Eyjólfur; Belart, Joaquín M. C.; Gudmundsson, Magnus Tumi (Cambridge University Press (CUP), 2020-06-02)
    Non-surface mass balance is non-negligible for glaciers in Iceland. Several Icelandic glaciers are in the neo-volcanic zone where a combination of geothermal activity, volcanic eruptions and geothermal heat flux much higher than the global average lead ...
  • Radujković, Dajana; Verbruggen, Erik; Sigurdsson, Bjarni D.; Leblans, Niki; Janssens, Ivan; Vicca, Sara; Weedon, James (Oxford University Press (OUP), 2017-12-08)
    Global change is expected to affect soil microbial communities through their responsiveness to temperature. It has been proposed that prolonged exposure to elevated temperatures may lead to progressively larger effects on soil microbial community ...
  • Cook, David (University of Iceland, School of Social Sciences, Faculty of Economics, 2018)
    Enhanced understanding and knowledge concerning a nation’s environmental sustainability performance is necessary to ensure the longterm flourishing capacities of economies and critical to the maintenance of human well-being, particularly through the ...
  • Lichoro, Charles Muturia (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-12-13)
    An extensive geophysical survey comprising over 400 MT and 515 gravity stations on the Korosi, Paka and Silali volcanoes in the northern Kenya rift was conducted in order to assess the occurrence of geothermal resources in the context of the geophysics ...