Underground exploration methods become more varied. Through Electricity Properties of Sedimentary Rocks, Society of Eksplorastion Geophysics (SEG) with the Geophysical ITS International Class held Monday (8 / 2). Along with dozens of students from various majors, Ben Clennel, Chief Researcher of origin Pretolium Perth, Australia, featured as a presenter tungal.
The development of geological exploration tools continue to evolve with ongoing research activities. This is what lies behind the international organization SEG held a road show to several countries, including Indonesia and the ITS, in order to make the introduction of new methods in the field of geological exploration mutakir.
Message from the President Widya, Geophysics Faculty Advisor as the main agenda of the seminar open. Namely presentation Clennel Ben, who served as a Research Stream Leader CSIRO, Perth, Australia, on detection tools materials underground material. Like petroleum, natural gas, or mining commodities mireral though.
"The key to these tools is the way the wave and polarization," explained Oxford University scholar is the man. Ben was then focused on exploration tool that uses the method mutakir Frecuency Very Low (VLF). Where the tool is biased to detect materials in the soil, no matter how small, and even in the farthest layer.
"VLF is in it to make resistors that can be polarizing filter material becomes greater, so we could read by the appliance," explained Ben more information. Detailed Tommy Herdiyantoro Piru, President SEG ITS tells about the workings of this VLF Engine tool. Engine will emit frequency waves into the ground. Then the material in the soil that receives the signals reflected back to a specific frequency band which later ditanggkap by a computer screen as a graph. Graphs that this will then identify what type of material in the soil adal. "However small the reflected any frequency, by means of this VLF, will be legible," said mahasisawa Physics in 2008 this force.
Engine VLF addition, Ben also explained in his presentation engine other engine. Like the engine with a galvanic system. Unlike the VLF can detect frequencies less than 1Hz, this galvanic system can detect polarized waves or magnetic waves from 4KHz. "This tool is suitable to detect materials that have a high resistance, like water, or mud," explained Ben.
From ITS alone, Tommy explained bahwasannya Geophysics in particular, have made observations and create a single engine VLF. "Last year, ITS Geofifika successfully create and implement on Madura VLF engine," he said excitedly.