Magma chamber over-pressuring by volatile saturation and/or a magma mixing event may have triggered the 1883 eruption of Krakatau. From the beginning of activity on 20 May to the onset of the 22–24 hour-long climactic phase on 26–27 August, Krakatau produced a discontinuous series of vulcanian to sub-plinian eruptions. Based on contemporary descriptions, the intensity of these phases may previously have been underestimated. The most realistic estimate of eruptive volume (magnitude) is about 10 km3 of dacitic magma. The climax of the eruption began at 1:00 pm on 26 August with a plinian phase which led into a 5-hour-long ignimbrite-producing phase. Caldera collapse most probably occurred near the end of the eruption on 27 August, precluding large scale magma-seawater interaction as a major influence on the eruption column and characteristics of the pyroclastic deposits. Very rapid displacement of the sea by pyroclastic flows remains the best explanation for the series of catastrophic sea waves that devastated the shores of the Sunda Straits, with the last and largest tsunami coinciding with the slumping of half of Rakata cone into the actively forming caldera, perhaps during a period of great pyroclastic flow production. The large audible explosions recorded on 27 August may have been the rapid ejection of large pulses of magma that collapsed to form pyroclastic flows in the ignimbrite-forming phase. Co-ignimbrite ash columns rising in the atmosphere immediately after the generation of each major pyroclastic flow may have contributed to the magnitude of the air waves. A reappraisal of the eruption in the light of this, in conjunction with the pressure (air wave) and tide gauge (tsunami) records from Jakarta, suggests that the relationship between the latter two has been oversimplified in previous studies. Tsunami travel times from Krakatau to Jakarta probably varied more than hitherto thought and there need not be a simple correlation between the times of the explosions and the initiation of the tsunamis. However, tsunamis in the Sunda Straits and vicinity probably were not caused or influenced by coupling with the air waves. Various hypotheses about the cause of the tsunamis and explosions are reviewed and it is concluded that the cause of both is most likely related to the sudden emission of large pulses of magma that led to formation of the Krakatau ignimbrite.
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Banister, J. R.: Pressure waves generated by the Mount St. Helens eruption. J. Geophys. Res. 89, 4895–4904 (1984)
Blake, S.: Volatile saturation during the evolution of silicic magma chambers as an eruption trigger. J. Geophys. Res. 89, 8237–8244 (1984)
Blake, S.; Campbell, I. H.: The dynamics of mixing during flow in volcanic conduits. Contrib. Mineral. Petrol. 94, 72–81 (1986)
Camus, G.; Vincent, P. M.: Discussion of a new hypothesis for the Krakatau volcanic eruption in 1883. J. Volcanol. Geotherm. Res. 19, 167–173 (1983)
Camus, G.; Vincent, P. M.: Petrologic evolution of Krakatau (Indonesia): implications for a future activity. J. Volcanol. Geophys. Res. 22, 299–316 (1987)
Druitt, T.; Sparks, R. S. J.: On the formation of calderas during ignimbrite formation. Nature 310, 679 (1984)
Fierstein, J.; Hildreth, W.: The plinian eruptions of 1912 at Novarupta, Katmai National Park, Alaska. Bull, Volcanol. in review (1992)
Fierstein, J.; Nathanson, M.: Another look at the calculation of fallout tephra volumes. Bull Volcanol. 54, 156–167 (1992)
Francis, P. W.: The origin of the 1883 Krakatau tsunamis. J. Volcanol. Geotherm. Res. 25, 349–364 (1985)
Francis, P. W.; Self, S.: The eruption of Krakatau. Sci. Amer. 249, 172–187 (1983 a)
Francis, P. W.; Self, S.: Tsunamis and pyroclastic flows of the Krakatau eruption, 1883. Eos 64, 872 (1983 b)
Goerke, V. H.; Young, G. M.; Cook, R. K.: Infrasonic observations of the May 16, 1963 volcanic explosion on the island of Bali. J. Geophys. Res. 70, 6017–6022 (1965)
Gorshkov, G. S.: Gigantic eruption of the volcano Bezymianny. Bull. volcanol. 20, 77–102 (1959)
Harkrider, D.; Press, F.: The Krakatau air-sea waves: an example of pulse propagation in coupled systems. Geophys. J. R. Astron. Soc. 13, 149–153 (1967)
Heiken, G. H.; Wohletz, K.: Volcanic ash. 246 pp., University of Calif. Press, Berkeley 1985.
Kieffer, S. W.: Fluid dynamics of the May 18 blast at Mount St. Helens. U. S. Geol. Surv. Prof. Pap. 1250, 379–400 (1981)
Kieffer, S. W.; Sturtevant, B.: Laboratory studies of volcanic jets. J. Geophys. Res. 89, 8253–8268 (1986)
Latter, J. H.: Tsunamis of volanic origin: Summary of causes, with particular reference to Krakatoa, 1883. Bull. Volcanol. 44, 467–490 (1981)
Mauk, F. J.: Utilization of seismically recorded infrasonic-acoustic signals to monitor volcanic explosions: The El Chichón sequence 1982 — a case study. J. Geophys. Res. 88, 10385–10401 (1983)
Nairn, I. A.: Atmospheric shock waves and condensation clouds from Ngauruhoe explosive eruptions. Nature 259, 190–192 (1976)
Ninkovich, D.: Distribution, age and chemical composition of tephra layers in deep-sea sediments off Western Indonesia. J. Volcanol. Geotherm. Res. 5, 67–86 (1979)
Pallister, J. S.; Hoblitt, R. P.; Reyes, A. G.: A basalt trigger for the 1991 eruptions of Pinatubo volcano? Nature 356, 426–428 (1992)
Press, F.; Harkrider, D.: Propagation of acoustic-gravity waves in the atmosphere. J. Geophys. Res. 67, 3889–3908 (1962)
Reed, J. W.: Air pressure waves from Mount St. Helens eruptions. J. Geophys. Res. 92, 11979–11992 (1987)
Rowland, S.; Jurado, Z.; Walker, G. P. L.: El Jorullo, Mexico: The nature of “violent strombolian” eruptions is determined by the yield strength of magma. Eos 72, 568 (1991)
Self, S.: Large-scale phreatomagmatic volcanism: a case study from New Zealand. J. Volcanol. Geotherm. Res. 17, 433–469 (1983)
Self, S.; Rampino, M. R.: Comments on “A geophysical interpretation of the 1883 Krakatau eruption” by I. Yokoyama. J. Volcanol. Geotherm. Res. 13, 379–386 (1983)
Self, S.; Rampino, M. R.: The 1883 eruption of Krakatau. Nature 294, 699–704 (1981)
Self, S.; Rampino, M. R.; Newton, M. S.; Wolff, J. A.: Volcanological study of the great Tambora eruption of 1815. Geology 12, 659–663 (1984)
Self, S.; Wohletz, K. H.: A new look at initiation and timing of the Krakatau 1883 eruption sequence. Eos 64, 872, (1983)
Sigurdsson, H.; Carey, S.; Mandreville, C.; Bronto, S.: Pyroclastic flows of the 1883 Krakatau eruption. Eos 72, 377, 380–381 (1991)
Simkin, T.; Fiske, R. S.: Krakatau 1883 — The Volcanic Eruption and Its Effects. 464 pp., Smithsonian Inst. Press, Washington, DC 1983.
Simkin, T.; Sieber, L.; McClelland, L.; Bridge, D.; Newhall, C.; Latter, J. H.: Volcanoes of the world. 232 pp., Smithsonian Inst., Ross Publ. Co., Stroudsberg, Pa. 1981.
Sparks, R. S. J.; Moore, J. G. F.; Rice, C. J.: The giant umbrella cloud of Mount St. Helens. J. Volcanol. Geotherm. Res. 28, 257–274 (1986)
Sparks, R. S. J.; Sigurdsson, H.; Wilson, L.: Magma mixing: a mechanism for triggering acid explosive eruptions. Nature 267, 315–318 (1977)
Strachey, R.: On the air waves and sounds caused by the eruption of Krakatoa in August, 1883. In: Symons, G. J. (ed.), The Eruption of Krakatoa and Subsequent Phenomena. Report of the Krakatoa Committee of the Royal Society. pp 57–88, Trubner and Co., London 1888.
Stehn, C. E.: The geology and volcanism of the Krakatau Group, Batavia. Proc. Fourth Pacif. Sci. Congr. Guidebook, 1–55 (1929)
Symons, G. J. (ed.): The Eruption of Krakatoa and Subsequent Phenomena. Report of the Krakatoa Committee of the Royal Society. 494 pp., Trubner and Co., London 1888.
Verbeek, R. D. M.: The Krakatau eruption. Nature 30, 10–15 (1884)
Verbeek, R. D. M.: Krakatau. 495 pp., Govt. Press, Batavia 1885.
Vincent, P. M.; Camus, G.: The origin of the 1883 Krakatau tsunamis, by P. W. Francius: Discussion. J. Volcanol. Geotherm. Res. 30, 169–177 (1986)
Walker, G. P. L.: Ignimbrite types and ignimbrite problems. J. Volcanol. Geotherm. Res. 17, 65–88 (1983)
Westerveld, J.: Quaternary volcanism of Sumatra. Geol. Soc. Amer. Bull. 63, 561–594 (1952)
Williams, H.: Calderas and their origins. Univ. Calif Publ. 25–6, 239–346 (1941)
Woods, A. W.; Caulfield, C-C. P.: A laboratory study of explosive volcanic eruptions. J. Geophys. Res. 97, 6699–6712 (1992)
Woods, A. W.; Kienle, J.: The dynamics and thermodynamics of volcanic clouds: Theory and observations from the April 15 and April 21, 1990, eruption of Redoubt, Alaska. J. Volcanol. Geotherm. Res., in press (1992)
Woods, A. W.; Wohletz, K.: Dimensions and dynamics of coignimbrite eruption columns. Nature 350, 225–227 (1991)
Woulff, G.; McGetchin, T. R.: Acoustic noise from volcanoes: Theory and experiment. Geophys. J. Roy. Astron. Soc. 45, 601–616 (1976)
Yokoyama, I.: A geophysical interpretation of the 1883 Krakatau eruption. J. Volcanol. Geotherm. Res. 9, 359–378 (1981)
Yokoyama, I.: A scenario of the 1883 Krakatau tsunamis. J. Volcanol. Geotherm. Res. 34, 123 (1987)
Submitted to the Conference Proceedings of the symposium “The Krakatau Islands — a case study of natural change in biodiversity” (27th Pacific Science Congress, Honolulu, 27 May – 2 June 1991)
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Self, S. Krakatau revisited: The course of events and interpretation of the 1883 eruption. GeoJournal 28, 109–121 (1992). https://doi.org/10.1007/BF00177223
- Tide Gauge
- Pyroclastic Flow
- Pyroclastic Deposit
- Eruption Column
- Large Pulse