?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=%E2%80%9CPENGAMATAN+AKTIVITAS+GUNUNGAPI+SOPUTAN+MENGGUNAKAN+METODE+HVSR+(Horizontal+to+Vertical+Spectral+Ratio)%0D%0APeriode+Oktober+2014+Sampai+Januari+2015%E2%80%9D&rft.creator=Yunita+Permata+Sari%2C+1115051039&rft.subject=+&rft.description=Gunungapi+Soputan+merupakan+gunungapi+strato+yang+berada+di+Desa+Maliku%2C+Kecamatan+Tombasian%2C+Kabupaten+Minahasa+Selatan+dan+Minahasa+Tenggara%2C+Provinsi+Sulawesi+Utara%2C+Indonesia.+Gunungapi+Soputan+merupakan+salah+satu+gunungapi+yang+aktif%2C+sehingga+perlu+dilakukan+pemantauan+aktivitas+vulkanik+gunungapi+tersebut.+Dalam+penelitian+ini+kami+menggunakan+metode+HVSR.+Metode+HVSR+dapat+digunakan+untuk+memantau+aktivitas+vulkanik+yang+didasarkan+pada+perubahan+karakteristik+frekuensi+fundamental+yang+terlihat+pada+kurva+HVSR.%0D%0ADari+hasil+grafik+HVSR+Frekuensi+Fundamental+pada+Gunungapi+Soputan+terdapat+perubahan+yang+signifikan+sebelum+terjadi+letusan.+Pada+Bulan+Oktober+sampai+Bulan+November+2014+nilai+frekuensi+stabil+selama+51+hari+dengan+frekuensi+antara+1%2C6-1%2C7+Hz.+Hal+ini+mengindikasikan+bahwa+tekanan+dari+Gunungapi+Soputan+masih+stabil.+Bulan+Desember+2014+(selama+15+hari)+frekuensi+mengalami+kenaikkan+menjadi+2+Hz+sampai+2%2C9+Hz.+Hal+ini+mengindikasikan+bahwa+tekanan+dari+Gunungapi+Soputan+mulai+mengalami+peningkatan+dan+adanya+suplai+magma+yang+naik+kepermukaan.+Tetapi+pada+tanggal+25+Desember+2014%2C+frekuensi+yang+menurun+menjadi+1%2C8+Hz+(selama+12+hari+sebelum+letusan+terjadi).+Penurunan+nilai+frekuensi+tersebut+menunjukkan+bahwa+kondisi+kubah+lava+mulai+melemah+akibat+tekanan+yang+semakin+tinggi.+Dari+nilai+frekuensi+yang+menurun+dan+stabil+tersebut+menunjukkan+bahwa+akan+terjadi+letusan.+Terbukti+pada+tanggal+6+Januari+2015+Pukul+02.47+terjadi+letusan+pada+Gunungapi+Soputan.+Dari+hasil+tersebut%2C+sehingga+metode+HVSR+dapat+memantau+aktivitas+vulkanik+gunungapi.%0D%0AKata+kunci+%3Aaktivitas%2C+gunungapi+Soputan%2C+metode+HVSR%2C+2015%0D%0A%0D%0A%E2%80%9CTHE+OBSERVATION+OF+SOPUTAN+VOLCANIC+ACTIVITY+BY+USING+HVSR+(Horizontal+to+Vertical+Spectral+Ratio)+METHOD%0D%0AThe+Period+October+2014+To+January+2015%E2%80%9D%0D%0ASoputan+vulcano+is+volcano+strato+which+is+located+in+Maliku+Village%2C+Sube+Tombasian%2C+Sounth+Minahasa+and+Sountheast+Minahasa+districts%2C+North+Sulawesi+province+of+Indonesia.+Soputan+volcano+is+one+of+the+active+volcanoes%2C+then+it+is+necessary+to+monitor+this+volcano.+In+this+study%2C+we+use+HVSR+method.+HVSR+method+can+be+used+to+monitor+volcanic+activity+based+on+changes+of+fundamental+frequency+characteristics+which+is+seen+in+HVSR+curve.%0D%0AFrom+the+result+of+HVSR+chart+fundamental+frequency+in+Soputan+volcano+there+is+a+significant+change+before+the+eruption+in+October+until+November+2014+frequency+value+is+stable+for+51+days+with+frequency+between+1%2C6-1%2C7+Hz.+This+Indicate+that+the+pressure+of+Soputan+volcano+is+still+stable.+In+Desember+2014+(15+days)+the+frequency+increased+to+2+Hz+until+2%2C9+Hz.+This+indicates+that+the+pressure+of+Soputan+volcano+began+to+increase+and+the+supply+of+magma+is+rising+to+the+surface.+But+on+25+December+2014%2C+the+frequency+dropped+to+1%2C8+Hz+(for+12+days+before+eruption).+The+impairment+of+frequency+shows+that+the+condition+of+dome+began+to+weaken+due+to+the+higher+pressure+from+the+decreases+and+stable+frequency+indicate+that+the+eruption+will+be+occured%2C+proven+on+6+January+2015+at+02.47+the+eruption+was+happened+on+Soputan+volcanic.+From+this+result+through+HVSR+Method+can+monitor+volcanic+activity.%0D%0AKeywords+%3Aactivity%2C+Soputan+volcanic%2C+HVSR+method%2C+2015&rft.publisher=FT&rft.date=2015-12-22&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F2%2FABSTRACT.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F3%2FCOVER%2520DALAM.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F4%2FMENYETUJUI.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F5%2FMENGESAHKAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F6%2FSURAT%2520PERNYATAAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F7%2FRIWAYAT%2520HIDUP.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F8%2FPERSEMBAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F9%2FMOTO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F10%2FSANWACANA.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F11%2FDAFTAR%2520TABEL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F12%2FDAFTAR%2520GAMBAR.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F16625%2F13%2FDAFTAR%2520ISI.pdf&rft.format=text&rft.identifier=h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