Opin vísindi

Fletta eftir höfundi "Jóhannesson, Tómas"

Fletta eftir höfundi "Jóhannesson, Tómas"

Röðun: Raða: Niðurstöður:

  • Icon
    The 2014 Lake Askja rockslide-induced tsunami: Optimization of numerical tsunami model using observed data 
    Gylfadottir, Sigridur Sif; Kim, Jihwan; Helgason, Jón Kristinn; Brynjólfsson, Sveinn; Höskuldsson, Ármann; Jóhannesson, Tómas; Harbitz, Carl Bonnevie; Løvholt, Finn (Wiley-Blackwell, 2017-05)
    A large rockslide was released from the inner Askja caldera into Lake Askja, Iceland, on 21 July 2014. Upon entering the lake, it caused a large tsunami that traveled about ∼3 km across the lake and inundated the shore with vertical runup measuring up ...
  • Icon
    The geodetic mass balance of Eyjafjallajökull ice cap for 1945–2014: processing guidelines and relation to climate 
    Belart, Joaquín M. C.; Magnússon, Eyjólfur; Berthier, Etienne; Pálsson, Finnur; Adalgeirsdottir, Gudfinna; Jóhannesson, Tómas (Cambridge University Press (CUP), 2019-04-11)
    Mass-balance measurements of Icelandic glaciers are sparse through the 20th century. However, the large archive of stereo images available allows estimates of glacier-wide mass balance in decadal time steps since 1945. Combined with climate records, ...
  • Icon
    Mass Balance of 14 Icelandic Glaciers, 1945–2017: Spatial Variations and Links With Climate 
    Belart, Joaquín M. C.; Magnússon, Eyjólfur; Berthier, Etienne; Gunnlaugsson, Ágúst Þ.; Pálsson, Finnur; Adalgeirsdottir, Gudfinna; Jóhannesson, Tómas; Þorsteinsson, Þorsteinn; Björnsson, Helgi (Frontiers Media SA, 2020-06-03)
    To date, most mass balance studies in Iceland have concentrated on the three largest ice caps. This study turns the focus toward smaller Icelandic glaciers, presenting geodetic mass-balance estimates for 14 of them (total area 1,005 km2 in 2017) from ...
  • Icon
    Non-surface mass balance of glaciers in Iceland 
    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 ...
  • Icon
    Winter mass balance of Drangajökull ice cap (NW Iceland) derived from satellite sub-meter stereo images 
    Belart, Joaquín M. C.; Berthier, Etienne; Magnússon, Eyjólfur; Anderson, Leif S.; Pálsson, Finnur; Þorsteinsson, Þorsteinn; Howat, Ian M.; Adalgeirsdottir, Gudfinna; Jóhannesson, Tómas; Jarosch, Alexander H. (Copernicus GmbH, 2017-06-30)
    Sub-meter resolution, stereoscopic satellite images allow for the generation of accurate and high-resolution digital elevation models (DEMs) over glaciers and ice caps. Here, repeated stereo images of Drangajökull ice cap (NW Iceland) from Pléiades and ...