Cl/B ratio of geothermal fluid around Slamet Volcano, Jawa Tengah, Indonesia

Assessment of Geothermal Potential at Ungaran Volcano, Indonesia Deduced from Numerical Analysis

Ungaran volcano is located in the Central Java, Indonesia. Numerical analysis has performed in order to assess the geothermal potential of Ungaran volcano using a 3-D finite difference simulator HYDROTHERM Ver2.2. A conceptual model constructed based on the results of geophysical studies such as gravity, spontaneous-potential, microearthquake, infrared imagery and shallow ground temperature. De...

Gravity Modeling of the Karaha - Telaga Bodas Geothermal System, Indonesia

The Karaha-Telaga Bodas geothermal system couples spectacular surface manifestations with an extensive geological and geophysical data set. Examination of fluid inclusions and mineral relationships has allowed development of a thermal history for the system. These data suggest that a quartz diorite intrusion encountered in drill samples provides the heat that drives this system. Delineation of ...

Early Pleistocene 40Ar/39Ar ages for Bapang Formation hominins, Central Jawa, Indonesia.

The Sangiran dome is the primary stratigraphic window for the Plio-Pleistocene deposits of the Solo basin of Central Jawa. The dome has yielded nearly 80 Homo erectus fossils, around 50 of which have known findspots. With a hornblende (40)Ar/(39)Ar plateau age of 1.66 +/- 0.04 mega-annum (Ma) reportedly associated with two fossils [Swisher, C.C., III, Curtis, G. H., Jacob, T., Getty, A. G., Sup...

The Fluid Mechanics Inside a Volcano

The style and evolution of volcanic eruptions are dictated by the fluid mechanics governing magma ascent. Decompression during ascent causes dissolved volatile species, such as water and carbon dioxide, to exsolve from the melt to form bubbles, thus providing a driving force for the eruption. Ascent is influenced not only by the nucleation and growth of gas bubbles, but also magma rheology and ...

JaWa: Java with Assertions