@article{fdi:010069347,
  title = {{T}he effusive-explosive transitions at {R}okatenda 2012-2013 : unloading by extrusion of degassed magma with lateral gas flow},
  author = {{P}rimulyana, {S}. and {B}ani, {P}hilipson and {H}arris, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{B}etween {O}ctober 2012 and {A}ugust 2013, {R}okatenda, one of the most poorly understood volcanoes in {I}ndonesia, entered a phase of intense eruptive activity which involved extrusion of viscous lava, gas discharge and explosive activity. {D}uring the 10-month-long eruption, a lava volume of 2-5 x 10(6) m(3) was extruded at mean output rate of 0.3 m(3) s-(1), with 2 to 3-month-long high extrusion rate phases being terminated by explosive events. {E}xtrusion built a lava dome attaining a maximum height of similar to 80 m above the crater rim, with a basal width of about 250 m. {T}he composition of the 2012-2013 lava dome is comparable to that of the 1980 lava dome, both being andesite-trachydacite. {M}ineralogically, the 2012-2013 lava dome is mainly composed of plagioclase, pyroxene and an undetermined opaque mineral. {H}alogens released during eruption are consistent with the extrusion being fed, at least in the first eruption phase, by a degassed magma. {T}his resulted in the formation of a dense, viscous plug in the conduit that led to a lateral gas flow, with gasses escaping around the plug to form multiple craters surrounding the dome. {D}uring the course of the eruptive activity, degassed magma was progressively forced out of the vent to unload deeper magma and force the system into an explosive phase. {S}uch a scenario has occurred in the past at {R}okatenda and is likely to be repeated in the future and creates an activity pattern that may be used to characterize such systems.},
  keywords = {{R}okatenda volcano ; {D}egassed magma plug ; {D}ome extrusion ; {L}ateral gas ; flow ; {U}nloading ; {INDONESIE}},
  booktitle = {},
  journal = {{B}ulletin of {V}olcanology},
  volume = {79},
  numero = {2},
  pages = {art. 22 [16 p.]},
  ISSN = {0258-8900},
  year = {2017},
  DOI = {10.1007/s00445-017-1104-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010069347},
}