Abstract
A dramatic short-term increase in seismicity and ground deformation took place at Rabaul Caldera on 19 September 1983, and marked the start of a period of frequent episodes of high seismic energy release and concurrent rapid ground deformation. Together with increased background levels of seismicity and ground deformation, these phenomena are interpreted as indications of higher rates of magma injection at shallow depths within the caldera, which greatly increases the likelihod of an eruption at Rabaul in the near future. A modest volume of magma, about 100 million m3, could be available for eruption from two shallow reservoirs, but a somewhat deeper and much larger magma body — residual from the latest major eruption about 1400 yr BP — may also exist beneath the caldera.
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Almond, R.A., andMcKee, C.O., 1982,Location of Volcano-Tectonic Earthquakes within the Rabaul Caldera. Geol. Surv. Papua Guinea Rep.,82/19, 10 pp.
Brown, G., 1878,Journal of the Rev. G. Brown, 1860–1902 (11 volumes). Mitchell Library, Sydney, Aust.
Cifali, G., D'Addario, G.W., Polak, E.J., andWiebenga, W.A., 1969,Rabaul Preliminary Crustal Seismic Test, New Britain 1966. Bur. Miner. Resour. Aust. Rec.,1969/125, 14 pp.
Cooke, R.J.S., 1977,Rabaul Volcanological Observatory and Geophysical Surveillance of the Rabaul Volcano. The Australian Physicist, Feb. 1977, p. 27–30.
Eaton, J.P., 1962,Crustal Structure and Volcanism in Hawaii. Am. Geophys. Union Monogr.,6, p. 13–29.
Everingham, I.B., 1975,Faulting Associated with the Major North Solomon Sea Earthquakes of 14 and 26 July 1971. J. Geol. Soc. Aust.,22, p. 61–70.
Finlayson, D.M., andCull, J.P., 1973,Time-Term Analysis of New Britain/New Ireland Island Arc Structures. Bur. Miner. Resour. Aust. Rec.,1973/21, 20 pp.
Fisher, N.H., 1939,Geology and Vulcanology of Blanche Bay, and the Surrounding Area, New Britain. Territory of New Guinea, Geol. Bull.,1, 68 pp.
Furumoto, A.S., Hussong, D.M., Campbell, J.F., Sutton, G.H., Malahoff, A., Rose, J.C., andWoollard, G.P., 1970,Crustal and Upper Mantle Structure of the Solomon Islands as Revealed by Seismic Refraction Survey of November-December 1966. Pacific Science,24, (3, p. 315–332.
Gardner, G.H.F., Gardner, L.W., andGregory, A.R., 1974,Formation Velocity and Density — the Diagnostic Basics for Stratigraphic Traps. Geophysics,39, (6, p. 770–780.
Heming, R.F., 1874,Geology and Petrology of Rabaul Caldera, Papua New Guinea. Geol. Soc. Am. Bull.,85, p. 1253–1264.
Johnson, R.W., Jaques, A.L., Hickey, R.L., McKee, C.O., andChappell, B.W., 1985,Manam Island, Papua New Guinea: Petrology and Geochemistry of a Low-TiO 2 Basaltic Island-Arc Volcano. J. Pet., in press.
Kushiro, I., 1978,Density and Viscosity of Hydrous Calc-Alkalic Andesite Magma at High Pressures. Carnegie Inst., Washington, Year Book,77, p. 675–677.
McKee, C.O., 1982,Rabaul Caldera, New Britain. SEAN Bull.,7, (8, p. 9–13.
--,Johnson, R.W., Lowenstein, P.L., Riley, S.J., Blong, R.J., de Saint Ours, P., andTalai, B., 1985,Rabaul Caldera, Papua New Guinea: Volcanic Hazards, Surveillance, and Eruption Contingency Planning. J. Volc. Geotherm. Res.,23, in press.
Mogi, K., 1958,Relations Between the Eruptions of Various Volcanoes and the Deformations of the Ground Surface Around Them. Bull. Earthq. Res. Inst.,36, p. 94–134.
Sapper, K., 1910, Beitraege zur Kenntnis Neupommerns und des Kaiser-Wilhelms-Land (in German). Petermanns Mitteilungen,56, p. 189–193, 255–256.
Scholz, C.H., 1968,The Frequency-Magnitude Relation of Microfracturing in Rock and its Relation to Earthquakes. Bull. Seism. Soc. Am.,58, (1, p. 399–415.
Sparks, R.S.J., Sigurdsson, H., andWilson, L., 1977,Magma Mixing: a Mechanism for Triggering Acid Explosive Eruptions. Nature,267, p. 315–318.
Walker, G.P.L., Heming, R.F., Sprod, T.J., andWalker, H.R., 1981,Latest Major Eruptions of Rabaul Volcano. In:R.W. Johnson (Editor),Cooke-Ravian Volume of Volcanological Papers, Geol. Surv. Papua New Guinea, Mem.,10, p. 181–193.
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McKee, C.O., Lowenstein, P.L., De Saint Ours, P. et al. Seismic and ground deformation crises at Rabaul Caldera: Prelude to an eruption?. Bull Volcanol 47, 397–411 (1984). https://doi.org/10.1007/BF01961569
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DOI: https://doi.org/10.1007/BF01961569