Jökull - 01.01.2021, Síða 148

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Tryggvason E. 1993. Distance measurements in the
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Tryggvason, E. and H. Ólafsson 1994. Skorradalsvatn.
Lake level measurements 1982-1993. NVI Research
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Tryggvason E., M. M. Alves, J. L. Alves, J. C. Nunes and
H. Ólafsson 1994. Furnas volcano, ground deforma-
tion measurements 1991–1993. Nordic Volcanological
Institute, research report 9401, 19 pp.
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tive Volcanoes in Iceland. In: Barthemely et al. (eds.)
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Tryggvason E. and H. Ólafsson 1995. Kleifarvatn, lake
level measurements 1985–1994. Nordic Volcanologi-
cal Institute, research report 9502, 10 pp.
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