Analysis volcano deformation for determining location of the pressure source, hypocentre and magma supply as disaster mitigation efforts: case studies in Merapi volcano

Various disaster mitigation efforts due to volcanic earthquakes and eruptions are carried out reduce the risk of casualties damage infrastructure. One such effort is conduct deformation studies. The results this study include estimating position hypocenter, pressure source, magma supply volume, so that volume material released during eruption can be estimated. With Mogi Model approach analysis Tiltmeter data on Merapi Volcano in 2016, estimated hypocentre at a depth about 1,100 2,440 m source 2,345 below peak with 21.81 million m3. same model from GPS 2010 eruption, show 2,500 2,200 before 15 These two indicate causing surface originates shallow consistent seismicity period.