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The Global Volcanism Program has no activity reports for Lawu.
The Global Volcanism Program has no Weekly Reports available for Lawu.
Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.
05/1979 (SEAN 04:05) Earthquake swarm during late 1978
05/1979 (SEAN 04:05) Earthquake swarm during late 1978
The Indonesian newspaper Kompas reported that the first earthquakes of a swarm in the vicinity of the Lawu volcanic complex were felt on 10 December 1978. Area residents reported 14 felt shocks in December, five in January, two in February, six in March, and eight in April. The earthquakes were usually preceded by thunder-like rumbling from the direction of Lawu.
Seismicity became more frequent in late April and early May. At least four felt events occurred on 26 April, including a 10-second earthquake at 1900 that damaged a temple and a transmitting station. On 4 May a landslide in Lawu's Candradimuka Crater (in the S part of the complex) was followed by emission of a thick vapor cloud that was accompanied by a sulfur odor. Between the evening of 4 May and 0700 the next morning, nine events were felt. A total of 27 felt shocks occurred on 5 May, 37 on the 6th, and 35 on the 8th. A series of five earthquakes lasting 4-6 seconds each took place at about 1230 on 9 May. During a 12-hour period 14-15 May, there were more than 1,000 recorded events, more than 50 of which were felt. A VSI team is investigating the seismicity.
Further Reference. Tjia, H.D., and Hamidi, S., 1981, An earthquake swarm around Lawu volcano in Java: Berita Geologi, v. 13, p. 108-111.
Information Contacts: Kompas, Jakarta.
The massive compound stratovolcano Lawu contains an older, deeply eroded volcano on the north separated by a crescentic rift valley from the younger Lawu volcano of Holocene age (van Bemmelen, 1949b). Parasitic crater lakes and pyroclastic cones are found at the eastern side of the rift. The younger Lawu volcano contains eroded crater rims; its latest activity, including construction of a lava dome, occurred at the south end. A fumarolic area is located on the south flank at 2550 m. The only reported historical eruption from Lawu took place in 1885, when rumblings and light ashfall were reported. A major eruption reported from Lawu in 1752 was from neighboring Kelut volcano.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1885 Nov 28||1885 Nov 28||Confirmed||1||Historical Observations|
|[ 1752 May 1 ]||[ Unknown ]||Discredited|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Lawu stratovolcano rises to 3265 m above rice fields on its NW side. Lawu is one of the most massive volcanoes of Java, occupying much of the area between the cities of Surakarta (Solo) on the west and Madiun on the east. The only reported historical eruption from Lawu was an eruption in 1885 that produced minor ashfall.
Photo by Lee Siebert, 1995 (Smithsonian Institution).
|The massive compound stratovolcano Lawu dominates the skyline east of the city of Surakarta (Solo). This view is from the south, with a white steam plume rising from a thermal area at the center of the photo. The younger Lawu volcano, of Holocene age, was constructed to the north of an older complex. A crescentic rift valley between the two volcanoes is occupied on the east by several crater lakes. No historical eruptions are known from Lawu.
Photo by J. Matehelumual, 1979 (Volcanological Survey of Indonesia).
|The forested, compound stratovolcano Lawu, seen here from the SW, lies between the cities of Surakarta (Solo) and Madiun. A trail to the top of the volcano is used for pilgramages to the Hindu-Buddhist temple near the summit.
Photo by J. Matahelumual, 1979 (Volcanological Survey of Indonesia).
|Steam plumes rise at the lower right above a solfataric area on the southern flanks of Gunung Lawu volcano at an elevation of 2550 m. Erosion of hydrothermally altered rocks produces vegatation-free areas.
Photo by Dan Dzurisin, 1980 (U.S. Geological Survey).
|Kawah Kuning crater, at the summit of Gunung Lawu volcano, is seen here in an aerial view from the west. The flat-floored, 250-m-wide crater is truncated by younger craters to the south.
Photo published in Taverne, 1926 "Vulkaanstudien op Java," (courtesy of Volcanological Survey of Indonesia).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. 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.
IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..
Neumann van Padang M, 1951. Indonesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 1: 1-271.
Taverne N J M, 1926. Vulkanstudien op Java. Vulk Meded, 7: 1-132.
van Bemmelen R W, 1949b. The Geology of Indonesia. The Hague: Government Printing Office, v 1, 732 p.