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Krakatau volcano (Indonesia) - Smithsonian / USGS Weekly Volcanic Activity Report for 4 July-10 July 2018 (New Activity / Unrest)

Wed, 4 Jul 2018, 06:00
06:00 AM | BY: VN
PVMBG reported that during 4-5 July there were four ash-producing events at Anak Krakatau, each lasting between 30 and 41 seconds. Inclement weather conditions prevented an estimation of the ash-plume height from the event at 0522 on 4 July; ash plumes from events at 1409, 1425, and 1651 on 5 July rose 300-500 m above the crater rim and drifted N and NW. The Alert Level remained at 2 (on a scale of 1-4); residents and visitors were warned not to approach the volcano within 1 km of the crater.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
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From: Global Volcanism Program, 2018. Report on Krakatau. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 4 July-10 July 2018. Smithsonian Institution and US Geological Survey.

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Krakatau volcano
Caldera 813 m (2,667 ft.) / Anak Krakatau: 189 m
Sunda Strait, Indonesia, -6.1°S / 105.42°E
Current status: erupting (4 out of 5) Krakatau volcano eruptions:
1530, 1680-81, 1684, 1883 (Plinian eruption), 1927-30, 1931-32, 1932-34, 1935, 1936, 1937, 1938-40, 1941, 1942, 1943, 1944, 1945, 1946, 1946-47, 1949, 1950, 1952, 1953, 1955, 1958-59, 1959-63, 1965(?), 1969(?), 1972-73, 1975, 1978, 1979, 1980, 1981, 1988, 1992-93, 1994-95, 1996, 1997, 1999, 2000, 2001, 2007-8, April 2009-early 2010, Oct 2010 - March 2011, July-Oct 2011, Jan-May + Sep 2012, 2015(?), 2017, 2018 (22 Dec eruption & tsunami), 2019-ongoing
Typical eruption style
Explosive. Construction of a cinder cone  island (Anak Krakatau) inside the caldera formed by the 1883 eruption. Frequent strombolian activity.

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