?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=RELOKASI+HIPOSENTER+GEMPABUMI+WILAYAH+SUMATERA+BAGIAN+SELATAN+MENGGUNAKAN+METODE+DOUBLE-DIFFERENCE+(HYPODD)&rft.creator=+FHERA+CHANDRA+DEWI+%2C+1415051026&rft.subject=G+Geography+(General)&rft.subject=GB+Physical+geography&rft.description=Sumatera+Bagian+Selatan+merupakan+daerah+yang+rawan+terhadap+bencana+gempabumi+karena+adanya+aktifitas+tumbukan+lempeng+tektonik+yaitu+Lempeng+Indo-Australia+dan+Eurasia.+Kondisi+tektonik+wilayah+ini+perlu+diketahui+dengan+melakukan+penentuan+hiposenter+dari+gempa+yang+terjadi.+Akurasi+dalam+penentuan+hiposenter+memiliki+tingkat+kesalahan+tertentu+sehingga+perlu+dilakukan+relokasi+untuk+menentukan+ulang+hiposenter+gempabumi+agar+menjadi+lebih+akurat.+Untuk+menghasilkan+hiposenter+yang+lebih+akurat+ini+dilakukanlah+relokasi+hiposenter+dengan+menggunakan+Metode+Double+Difference.+Pada+dasarnya+prinsip+dari+Metode+Double+Difference+adalah+jika+jarak+antara+dua+event+gempabumi+yang+berdekatan+lebih+dekat+dibandingkan+jarak+antara+event+gempabumi+ke+stasiun%2C+maka+ray+path+kedua+event+gempabumi+tersebut+dapat+dianggap+mendekati+sama.+Pada+penelitian+ini+data+yang+digunakan+berupa+data+arrival+time+gelombang+P+dan+S+pada+rentang+waktu+April+2009+s.d+Desember+2017+dengan+koordinat+0%C2%BA+s.d+7%C2%BA+LS+dan+98%C2%BA+s.d+106%C2%BA+BT.+Jumlah+gempabumi+yang+terelokasi+adalah+sebanyak+3592+dari+3630+gempabumi.+Gempabumi+yang+tidak+terelokasi+disebabkan+saat+proses+relokasi+terdapat+beberapa+gempabumi+yang+menjadi+airquake.+Airquake+adalah+gempabumi+yang+berlokasi+di+atas+permukaan+setelah+direlokasi.+Hasil+dari+relokasi+hiposenter+menggunakan+hypoDD+menghasilkan+hiposenter+yang+lebih+baik%2C+dibuktikan+dengan+banyaknya+waktu+residual+waktu+tempuh+setelah+relokasi+yang+mendekati+nilai+nol+dan+gempabumi+dengan+kedalaman+10+km+mengalami+perubahan+serta+lebih+dapat+menggambarkan+pola+tektonik+dan+subduksi.+Distribusi+gempabumi+bersumber+dari+zona+subduksi+dari+pertemuan+Lempeng+Indo-Australia+dan+Eurasia%2C+ditunjukkan+dengan+distribusi+gempa+yang+semakin+dalam+ke+arah+Timur.+Serta+sudut+penunjaman+subduksi+Utara+ke+Selatan+terlihat+semakin+curam+karena+usia+dari+zona+subduksi+semakin+ke+Selatan+semakin+tua+dan+tidak+mudah+patah+sehingga+tingkat+kegempaannya+lebih+sedikit+terjadi.%0D%0AKata+kunci%3A+Gempabumi%2C+Relokasi+hiposenter%2C+Double+Difference+(HypoDD)%2C+Zona+Subduksi%0D%0Aii%0D%0A%0D%0AABSTRACT%0D%0A%0D%0ASouthern+Sumatra+is+a+prone+area+of+earthquake+due+to+the+subduction+of+tectonic+plates+that+are+Indo-Australian+Plate+and+Eurasian+Plate.+The+tectonic+condition+of+this+region+needs+to+be+identified+by+determining+the+hypocenter+of+the+earthquake+that+occurred.+Accuracy+in+the+determining+the+hypocenter+has+a+certain+error+rate+so.+Therefore%2C+to+make+it+more+accurate%2C+relocation+should+be+done+to+redefine+the+earthquake+hypocenter.+To+produce+a+more+accurate+hypocenter%2C+the+hypocenter+relocation+is+done+by+using+the+double+difference+method.+Basically%2C+the+principle+of+the+double-difference+method+is+that+if+the+distance+between+two+adjacent+earthquake+events+is+closer+than+the+distance+between+the+earthquake+events+to+the+station%2C+then+the+second+ray+path+of+the+two+earthquake+events+can+be+considered+as+approximately+equal.+In+this+study%2C+the+data+was+in+the+form+of+arrival+time+data+of+P+and+S+waves+from+April+2009+to+December+2017+with+coordinates+0%C2%BA+to+7%C2%BA+latitude+and+98%C2%BA+to+106%C2%BA+longitude.+The+number+of+relocated+earthquakes+was+3592+of+3630+earthquakes.+Some+earthquakes+were+not+relocated+because+in+the+relocation+process+there+were+several+earthquakes+that+became+airquake.+Airquake+is+an+earthquake+that+is+located+above+the+surface+after+being+relocated.+The+results+of+the+hypo-centered+relocation+using+hypoDD+showed+a+better+hypocenter%2C+proved+by+the+large+amount+of+residual+travel+time+after+the+near-zero+relocation+and+earthquake+with+10+km+depth+changed+and+described+tectonic+clearer+tectonic+patterns+and+subduction.+The+distribution+of+earthquakes+sourced+from+the+subduction+zone+of+the+Indo-Australian+and+Eurasian+Plate+encounters+shown+by+earthquake+distributions+that+were+getting+deeper+to+the+east.+In+addition%2C+the+angle+of+subduction+from+north+to+south+seemed+increasingly+steep+as+the+age+of+the+subduction+zone+to+the+south+getting+older+and+was+not+easily+broken+so+less+earthquake+occurred.%0D%0AKeywords%3A+Earthquake%2C+hypocenter+relocation%2C+Double+Difference+(HypoDD)%2C+Subduction+zone.%0D%0Ai&rft.publisher=UNIVERSITAS+LAMPUNG&rft.date=2018-07-04&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F32542%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F32542%2F17%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F32542%2F2%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=+++FHERA+CHANDRA+DEWI+%2C+1415051026++(2018)+RELOKASI+HIPOSENTER+GEMPABUMI+WILAYAH+SUMATERA+BAGIAN+SELATAN+MENGGUNAKAN+METODE+DOUBLE-DIFFERENCE+(HYPODD).++UNIVERSITAS+LAMPUNG%2C++FAKULTAS+TEKNIK.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F32542%2F