Jökull - 01.01.2021, Blaðsíða 148

Tryggvason E. 1982. The NVI magnetoresistor tiltmeter,
results of observations 1977–1981. Nordic Volcano-
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Tryggvason E. 1983. The widening of the Krafla fis-
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Tryggvason E. 1986. Multiple magma reservoirs in a
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Tryggvason E. 1986. Vertical ground movement in the
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Tryggvason E. 1989. Measurement of ground deformation
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Tryggvason E. 1989. Ground deformation in Askja, Ice-
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tute, research report 9001, 24 pp.
Banks, N., C. Carvajal, H. Mora and E. Tryggvason
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Eysteinn Tryggvason 1991. Kröflueldar. Óprentað handrit,
sjá vefsíðu Jarðvísindastofnunar. Bæta þarf inn hlekk
á skjalið
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Tryggvason E. 1992. Höskuldsvatn: Cause of unusually
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changes at Askja, Iceland. Bull. Volcanol. 55, 362–
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Tryggvason E. 1993. Distance measurements in the
Krafla-Gjástykki area 1983–1993. Nordic Volcano-
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Tryggvason E. 1994. Observed ground deformation at
Hekla, Iceland prior to and during the eruptions of
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Tryggvason E. 1994. Surface deformation at the Krafla
volcano, North Iceland, 1982–1992. Bull. Volcanol.
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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.
Tryggvason, E. 1995. Precision of Tilt-Leveling on Ac-
tive Volcanoes in Iceland. In: Barthemely et al. (eds.)
New challenges for Geodesy in Volcanoes Monitor-
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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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