Jökull


Jökull - 31.12.2001, Side 54

Jökull - 31.12.2001, Side 54
Bryndís Brandsdóttir et al. vegar hafði niðurrennsli affallsvatns á árunum 1988 og 1989 engin marktæk áhrif á sama svæði þar sem poruþrýstingur þess hafði lækkað til muna á milli nið- urdælingartilraunanna. REFERENCES Axelsson, G., Ó. G. Flóvenz, A. Hjartarson, S. Hauks- dóttir, G. Sverrisdóttir, F. Árnason, A. Árnason and R. Böðvarsson 2000. Thermal energy extraction by reinjection from the Laugaland geothermal system in N-Iceland. Proceedings of the World Geothermal Congress 2000, Kyushu-Tohoku, Japan, 3027-3032. Batani, F., R. Console and G. Luongo 1985. Seismological study of Larderello-Travale geothermal area. Geother- mics 14, 255-272. Björnsson, G. and B. Steingrímsson 1991. Changes intem- perature and pressure within the Svartsengi geother- mal field during exploitation. National Energy Author- ity, Int. Rep. OS-9I016/JHD-04 69 pp, (In Icelandic with an English abstract). Combs, J. and D. Hadley 1977. Microearthquake investi- gation of the Mesa geothermal anomaly, Imperial Val- ley, California. Geophys. 42: 17-33. Davis, S. D. and C. Frohlich 1993. Did (or will) fluid in- jection cause earthquakes? - Criteria for rational as- sessment. Seismol. Res. Lett. 64, 207-224. Einarsson, P. and S. Björnsson 1979. Earthquakes in Ice- land. Jökull 29, 37-43. Einarsson, P. 1991. Earthquakes and present-day tectonism in Iceland. Tectonophysics 189, 261-279. Eysteinsson, H. 1993. Elevation and gravity measurements on the western part of the Reykjanes peninsula dur- ing 1992. National Energy Authority, Int. Rep. OS- 93029/JHD-8 53 pp, (In Icelandic with an English ab- stract). Eysteinsson, H. 2000. Elevation and gravity changes at geothermal fields on the Reykjanes Peninsula, SW Iceland. Proceedings of the World Geothermal Congress 2000, Kyushu-Tohoku, Japan, 559-564. Franzson. H. 1990. Svartsengi. The geology of the Svarts- engi geothermal reservoir and its vicinity. National Energy Authority, Int. Rep. OS-90050/JHD-08 41 pp, (In Icelandic with an English abstract). Foulger, G. R. 1988. Hengill triple junction, SW Iceland. 2. Anomalous earthquake focal mechanisms and im- plications for process within the geothermal reservoir and at accretionary plate boundaries. J. Geophys. Res. 93, 13,507-13,523. Foulger, G. R., R. E. Long, P. Einarsson and A. Björnsson 1989. Implosive earthquakes at the active accretionary plate boundary in northern Iceland. Nature 337, 640- 642. Gilpin, B. and T. C. Lee 1978. A microearthquake study in the Salton Sea geothermal area, Califomia. Bull. Seim. Soc. Am. 68, 441^150. Klein, F. W., P. Einarsson and M. Wyss 1977. The Reykja- nes Peninsula Iceland, earthquake swarm of Septem- ber 1972 and its tectonic significance. J. Geophys. Res. 82, 865-888. Lister, C. R. B. 1974. On the penetration of water into hot rock. Geophys. J. R. Astron. Soc. 39, 465-509. Majer, E. L. and T. V. McEvilly 1979. Seismological in- vestigations of the Geysers geothermal field. Geophys. 44, 246-269. Sherburn, S., R. Allis and A. Clotworthy 1990. Microseis- mic activity at Wairakei and Ohaaki geothermal fields. Proc. 12th New Zealand Workshop, 51-55. Sigurgeirsson, M. Á. 1995. The younger Stampar erup- tion at Reykjanes, SW-Iceland. Náttúrufræðingurinn 64, 211-230, (In Icelandic with an English abstract). Zoback, M. D., and H. P. Harjes 1997. Injection-induced earthquakes and crustal stress at 9 km depth at the KTB deep drilling site, Germany. J. Geophys. Res. 102, 18,477-18,491. Vatnaskil 1989. Svartsengi - Reiknilíkan af jarðhita- kerfinu. National Energy Authority, lnt. Rep. OS- 8903l/JHD-05 111 pp, (In Icelandic). Vatnaskil 2002. Svartsengi - Reykjanes, Vinnslueftirlit ár- ið 2001. Verkefnisstjóri S. Þórhallsson. National En- ergy Authority, Int. Rep. OS-2002/017 111 pp, (In Ice- landic). Ward, P., G. Pálmason and C. Drake 1969. Microearth- quake survey and the Mid-Atlantic Ridge in Iceland. J. Geophys. Res. 74, 665-684. Ward, P. and S. Björnsson 1971. Microearthquakes, swarms, and the geothermal areas of Iceland. J. Geo- phys. Res. 76, 3953-3982. 52 JÖKULLNo. 51
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