?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=IDENTIFIKASI+ORIENTASI+REKAHAN+MIKRO+AREA+PANAS+BUMI+MONTE+AMIATA+BERDASARKAN+ANALISIS+STUDI+SHEAR+WAVE+SPLITTING&rft.creator=Hanif%2C+Irfan&rft.subject=Teknologi+(General)&rft.description=ABSTRACT%0D%0AIDENTIFICATION+OF+MICRO+FRACTURES+ORIENTATION+%0D%0AAT+MONTE+AMIATA+GEOTHERMAL+AREA+%0D%0ABASED+ON+SHEAR+WAVE+SPLITTING+STUDY+ANALYSIS%0D%0AWritten+by%0D%0AIRFAN+HANIF%0D%0AShear+Wave+Splitting+is+an+application+of+seismic+wave+to+analyse+the+anisotropy+level+of+a+certain+medium.+Generally%2C+shear+wave+propagation+through+a+rock+formation+will+be+polarized+(%CF%86)+into+two+parts+especially+when+the+medium+structures+are+different%2C+such+as+fracture.+The+polarized+shear+wave+which+is+perpendicular+to+fracture+will+propagate+slower+than+the+wave+that+propagates+parallel+to+the+fracture.+The+delay+time+(%CE%B4t)+of+both+wave+is+proportional+with+the+fracture+intensity+along+the+wave+propagation+from+the+source+to+the+station.+The+description+regarding+fracture+orientation+can+be+obtained+by+analysing+both+Shear+Wave+Splitting+parameters+(%CF%86+and+%CE%B4t)%2C+and+this+information+is+adequately+important+in+geothermal+exploration+or+exploitation+phase+at+Mt.+Amiata.+Based+on+the+result+of+this+research%2C+the+micro+earthquake+source+is+focused+on+the+east+to+the+south+area+and+spread+along+3+earthquake+stations.+The+existence+of+micro+earthquake+source+is+mainly+focused+at+the+depth+of+1+to+4+km.+In+addition%2C+the+polarization+direction+of+each+earthquake+station+at+the+geological+map+shows+a+dominant+fracture+orientation+consistently+at+NW-SE.+All+of+the+three+stations+also+show+that+the+polarization+direction+is+integrated+to+the+local+fault+existence+in+the+subsurface.+Furthermore%2C+the+research+shows+that+the+high+intensity+fracture+distribution+occurred+at+MCIV+station+area+in+the+southern+part+of+research+location.+Meanwhile%2C+the+low+intensity+fracture+distribution+occurred+at+ARCI+and+SACS+station+area+in+the+western+and+the+eastern+part+of+research+location.+The+high+value+of+fracture+intensity+accompanied+by+the+high+amount+of+structure+intensity%2C+strengthen+the+prediction+of+the+high+anisotropy+existence+which+potentially+tends+to+the+high+permeability+presence+at+the+area.%0D%0A%0D%0AKeywords%3A+shear+wave+splitting%2C+anisotropy%2C+fracture%2C+geothermal%2C+polarization+direction%2C+fracture+intensity.%0D%0A%0D%0AABSTRAK%0D%0AIDENTIFIKASI+ORIENTASI+REKAHAN+MIKRO%0D%0AAREA+PANAS+BUMI+MONTE+AMIATA+BERDASARKAN%0D%0AANALISIS+STUDI+SHEAR+WAVE+SPLITTING%0D%0AOleh%0D%0AIRFAN+HANIF%0D%0AMetode+Shear+Wave+Splitting+merupakan+aplikasi+gelombang+seismik+untuk%0D%0Amenganalisis+tingkat+anisotropi+dari+sebuah+medium.+Secara+umum%2C+perambatan%0D%0Agelombang+geser+melalui+batuan+akan+terpolarisasi+(%CF%86)+menjadi+dua+bagian+ketika%0D%0Amerambat+melalui+struktur+medium+yang+berbeda%2C+seperti+halnya+rekahan.%0D%0AGelombang+geser+yang+terpolarisasi+secara+tegak+lurus+dengan+rekahan+akan+datang%0D%0Alebih+lambat%2C+sedangkan+yang+terpolarisasi+secara+paralel+dengan+rekahan+akan%0D%0Adatang+lebih+cepat.+Waktu+tunda+(%CE%B4t)+kedua+gelombang+tersebut+proporsional%0D%0Adengan+intensitas+rekahan+sepanjang+gelombang+merambat+dari+sumber+ke+stasiun.%0D%0ADengan+menganalisis+parameter+Shear+Wave+Splitting+(%CF%86+dan+%CE%B4t)%2C+dapat+diperoleh%0D%0Agambaran+mengenai+orientasi+rekahan+sebagai+informasi+yang+cukup+penting+dalam%0D%0Atahap+eksplorasi+maupun+eksploitasi+area+panas+bumi+Mt.+Amiata.+Hasil+penelitian%0D%0Ayang+didapatkan%2C+sumber+gempa+mikro+terfokus+pada+area+timur+hingga+selatan%0D%0Alokasi+penelitian+dan+tersebar+di+sekitar+3+stasiun+perekam+gempa.+Keberadaan%0D%0Asumber+gempa+mikro+terpusat+pada+kedalaman+1+hingga+4+km.+Arah+polarisasi+tiap%0D%0Astasiun+perekam+gempa+dalam+peta+geologi+memperlihatkan+arah+dominan+rekahan%0D%0Ayang+cukup+konsisten%2C+yaitu+arah+NW-SE.+Ketiga+stasiun+menunjukkan+arah%0D%0Apolarisasi+yang+terintegrasi+dengan+keberadaan+sesar+lokal+di+bawah+permukaan.%0D%0APersebaran+nilai+intensitas+rekahan+yang+tinggi+berada+pada+area+stasiun+MCIV%2C%0D%0Ayaitu+sebelah+selatan+lokasi+penelitian.+Sementara+itu%2C+persebaran+nilai+intensitas%0D%0Arekahan+yang+rendah+berada+pada+area+stasiun+ARCI+dan+SACS%2C+yaitu+sebelah+barat%0D%0Adan+timur+lokasi+penelitian.+Tingginya+nilai+intensitas+rekahan+disertai+dengan%0D%0Abanyaknya+intensitas+struktur+memperkuat+prediksi+terhadap+keberadaan+anisotropi%0D%0Atinggi+yang+diduga+memiliki+potensi+permeabilitas+tinggi+pada+area+tersebut.%0D%0AKata+Kunci%3A+shear+wave+splitting%2C+anisotropi%2C+rekahan%2C+panas+bumi%2C+arah+polarisasi%2C%0D%0Aintensitas+rekahan.%0D%0A&rft.publisher=FAKULTAS+TEKNIK&rft.date=2016-10-17&rft.type=Skripsi&rft.type=PeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F24528%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F24528%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=h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