Institutional Repository UIN Sunan Kalijaga Yogyakarta: No conditions. Results ordered -Date Deposited. 2024-03-29T12:28:20ZEPrintshttp://digilib.uin-suka.ac.id/images/sitelogo.pnghttps://digilib.uin-suka.ac.id/2014-01-24T07:46:10Z2016-01-29T01:38:29Zhttp://digilib.uin-suka.ac.id/id/eprint/9869This item is in the repository with the URL: http://digilib.uin-suka.ac.id/id/eprint/98692014-01-24T07:46:10ZANALISIS GROUND SHEAR STRAIN DI WILAYAH KECAMATAN JETIS KABUPATEN BANTUL BERDASARKAN PENGUKURAN MIKROTREMORHave measured of ground shear strain in the Jetis subdistrict based of
measurements microtremor. This study aims to determine seismic vulnerability
index value, the value of peak ground acceleration in Jetis subdistrict, the value of
ground shear strain, and the phenomenons of ground hazard of ground shear strain
in Jetis subdistrict.
Microtremor measurement have done on 33 points with 1 km spacing. The
form of data have recorded are amplification value (A) and natural frequency ( )
then the analysis method used Horizontal to Vertical Spectral Ratio (HVSR)
which it was used to calculate the value of the seismic vulnerability index. Peak
ground acceleration calculation have done by using the Kanai method. Ground
shear strain is obtained by calculating two parameters the seismic vulnerability
index and the peak ground acceleration. If ground shear strain value have known
then the effects hazard phenomenon can be known.
The results showed that the seismic vulnerability index values ranged from
s cm 6 2 1,0.10 to s cm 6 2 31,1.10 . The range of peak ground acceleration value
between 34.10 gal and 72 gal. Value of ground shear strain ranged between
4 1,2.10 and 4 6,0.10 . Potential of phenomenon of ground motion hazards from
this study are ground shaking, ground cracking and settlement.
Keywords: microtremor, peak ground acceleration, ground shear strain, HVSR.NIM. 08620017 ELLA ROSITA DEWI