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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 9.57°S
  • 149.075°E

  • 640 m
    2099 ft

  • 253040
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Waiowa.

 Available Weekly Reports

There are no Weekly Reports available for Waiowa.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1943 Sep 18 1944 Aug 31 Confirmed 3 Historical Observations

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Baker G, 1946. Preliminary note on volcanic eruptions in the Goropu Mountains, south-eastern Papua, during the period December, 1943 to August 1944. J Geol, 54: 19-31.

Fisher N H, 1957. Melanesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 5: 1-105.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Smith I E M, 1981. Young volcanoes in eastern Papua. Geol Surv Papua New Guinea Mem, 10: 257-265.

Smith I E, Davies H L, 1976. Geology of the southeast Papuan mainland. Bur Min Resour Geol Geophys Bull 165: 1-86.

Waiowa (also known as Goropu) is an isolated pyroclastic cone that was formed during 1943-44 by explosive eruptions through Paleozoic to pre-Cambrian metamorphic rocks. The trachyandesitic volcano was born in an area of the eastern Papuan Peninsula without previous volcanic activity. Intermittent minor explosions beginning 18 September 1943 preceded the first major explosion on 27 December. Additional large explosions occurred on 13 February and 23 July 1944, leveling 80 sq km of forest. Following the final activity on 31 August, the topographically insignificant volcano was capped by a 500-m-wide, steep-walled crater that is now densely forested and contains a small lake.