A geothermal system is basically a system where heat is transferred from the internal part to the surface of the earth dominantly by conduction, convection, or both. The spatial variation of the magnitude of conductive heat transfer represented by lateral variation of observed surface heat flow values...

A comparison of second order and high order (4th, 8th and 12th order) of finite difference staggered-grid method on 2D P-SV elastic wave propagation has been conducted. The comparison plot of numerical dispersion and accuracy among each order has been generated to show the stability condition. CUDA C...

Frequency dependent attenuation of seismic waves that propagate through the partially fluid saturated porous rock will be observed. The new method for estimation of frequency dependent attenuation will be developed. The frequency dependent attenuation will be calculated in time-frequency domain which...

Simulation of seismic wave propagation has been very important way to study the relation between a specific condition of earth medium and seismogram recorded during a seismic event such as an earthquake. In this study, a numerical modelling of P-SV wave propagation in elastic heterogeneous medium has...

Georadar method with radar reflection profiling configuration and geoelectrical method with dipole-dipole configuration has been done to determine the lithology, fracture characteristics of weak zone or fault that could potentially result of mass movement in Liwa, Lampung Barat. This research was conducted...

In 2006 a large earthquake ever occurred in the province of Yogyakarta, which caused considerable damage. This is the basis need to investigate the seismic vulnerability index in around of the earthquake zone. This research is called microzonation of earthquake hazard. This research has been conducted...

The comparison of their frequency-phase velocity (FV) diagrams from both 8 and 24 channels seismic surface wave active data (MASW) have been carried out. This conducted to show the effectiveness of smaller amounts of geophones for MASW acquitision and comparing the processing FV results. Several data...

Pegunungan Bintang district with the capital Oksibil, almost all of its territory is mountains of karst, especially in the west area, people living in the mountain slopes and small valleys in small groups, scattered and isolated. Karst areas, in general, has a lot of subsurface cavities at a developed...

Solar activities eject high energetic particles, instead of electromagnetic radiation. The well-know solar activity main indicator is the existence of sunspot which has mean variation in 11 years, named by solar cycle. Solar activities are related to the space weather affecting all planets atmospheric...