Jökull - 01.06.2000, Blaðsíða 49

Comparison of tomographic crustal models with gravity data
Christensen, N.I. and R.H. Wilkins 1982. Seismic
properties density and composition of the Icelandic
crust near Reydarfjordur. J. Geophys. Res. 87, 6389-
6395.
Eberhart-Phillips, D. 1990. Three-dimensional P- and S-
velocity structure in the Coalinga region, Califomia.
J. Geophys. Res. 95, 15,343-15,363.
Eberhart-Phillips, D. and A.J. Michael 1993. Three-
dimensional velocity structure, seismicity, and fault
structure in the Parkfield region, central California. J.
Geophys. Res. 98, 15,737-15,758.
Einarsson, P. 1978. S-wave shadows in the Krafla caldera
in NE-Iceland, evidence for a magma chamber in the
cmst, Bull. Volcanol. 41, 1-9.
Ellsworth, W.L. and R.Y. Koyanagi 1977. Three-
dimensional crust and mantle structure of Kilauea
volcano, Hawaii. J. Geophys. Res. 82, 5379-5394.
Evoy, J.A. 1978. Precision gravity reobservations and
simultaneous inversion ofgravity and seismic data for
subsurface structure of Yellowstone. MS thesis, Univ.
Utah, 212 pp.
Field, P.R. 1994. Crustal structure ofthe spreading plate
boundary in Iceland and the north Atlantic from gra-
vity data. Ph.D. thesis, Univ. Durham, 224 pp.
Foulger, G.R. 1988. The Hengill triple junction, SW Ice-
land: 1. Tectonic structure and the spatial and temporal
distribution of local earthquakes. J. Geophys. Res. 93,
13,493-13,506.
Foulger, G.R. and D.R. Toomey 1989. Structure and
evolution of the Hengill-Grensdalur central volcano
complex, Iceland: Geology, geophysics and seismic
tomography. J. Geophys. Res. 94, 17,511-17,522.
Foulger, G.R., A.D. Miller, B.R. Julian and J.R. Evans
1995. Three-dimensional Vp and Vp/Vs stmctures of
the Hengill triple junction and geothermal area, Ice-
land and the repeatability of tomographic inversions,
Geophys. Res. Lett. 22, 1309-1312, 1995.
Granser, H., B. Meurers and P. Steinhauser 1989. Appar-
ent density mapping and 3D gravity inversion in the
eastern Alps. Geophys. Prosp. 37, 279-292.
Hersir, G.P., G. Björnsson and A. Bjömsson 1990. Eld-
stöðvar og jarðhiti á Hengilssvæði, Jarðeðlisfræðileg
könnun, Orkustofnun OS-90031/JHD-06, 93 pp.
Karlsdóttir, R., G. Johnsen, A. Björnsson, O. Sigurðsson
and E. Hauksson 1978. The geothermal area of Krafla:
General report on geophysical research 1976-1978.
Orkustofnun OS/JHD-7847, 155 pp.
Oppenheimer, D.H. and K.E. Herkenhoff 1981. Velocity-
density properties of the lithosphere from three-
dimensional modeling at The Geysers-Clear Lake reg-
ion, California. /. Geophys. Res. 86, 6057-6065.
Parasnis, D.S. 1962. Principles of Applied Geophysics,
London, Methuen.
Sæmundsson, K. 1978. Fissure swarms and central
volcanoes of the neovolcanic zones of Iceland. Geol.
J. Spec. Issue 10, 415-432.
Sæmundsson, K. 1995. Hengill, jarðhiti, ummyndun og
grunnvatn, 1:25,000 map. Orkustofnun, Hitaveita
Reykjavíkur, Landmælingar Islands.
Sæmundsson, K. 1982. Calderas in the neovolcanic zo-
nes of Iceland, in Eldur er í Norðri, (in Icelandic)
Festschrift for Sigurður Þórarinsson, pp 221-239,
Sögufélag, Reykjavík.
Schleusener, A., W. Torge and H. Drewes 1976. The gra-
vity field of northeastern Iceland, /. Geophys. 42, 27-
45.
Spector, A. and F.S. Grant 1970. Statistical models for
interpreting aeromagnetic data. Geophys. Prosp. 35,
293-302.
Talwani, M. 1973. Computer usage in the computation of
gravity anomalies. Meth. Comp. Phys. 13, 343-389.
Þorbergsson, G., I.T. Magnússon, A. Gunnarsson, G.V.
Johnsen and A. Björnsson 1984. Landmælingar og
þyngdarmælingar á Hengilssvæði 1982 og 1983. (in
Icelandic), Orkustofnun OS-84003/VOD-03 B. 58 pp.
Thurber, C.H. 1983. Earthquake locations and three-
dimensional crustal stmcture in the Coyote Lake area,
central California. /. Geophys. Res. 88, 8226-8236.
Toomey, D.R. and G.R. Foulger 1989. Application of
tomographic inversion to local earthquake data from
the Hengill-Grensdalur central volcano complex, Ice-
land. /. Geophys. Res. 94, 17,497-17,510.
JÖKULL No. 48 47