PRAKTIKUM SEISMIK REFRAKSI PROGRAM STUDI TEKNIK GEOFISIKA FAKULTAS TEKNIK PERTAMBANGAN DAN PERMINYAKAN
TUGAS PRAKTIKUM 7
Nama
: Haritsari Dewi
NIM
: 12314030
Shift
: Kamis, 15.00-17.00
Asisten
: Ara!ia "ahi#a $12313032% Kana A&athaNatania $1231305'%
INSTITUT TEKNOLOGI BANDUNG 2016
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.urva T-/ dan pe0odelan edala0an dengan 0enggunaan soft(are eisrefa
Ana!isis :
Met)#e ha&iwara mer+aan met)#e wat+ t+n#a an& er#asaran as+msi ahwa +n#+!asi awah erm+aan ti#a ter!a!+ esar$> 20?%. Ni!ai 1 #ari met)#e ini seesar 1 ms #an ni!ai 2 seesar 1.' ms. Se#an&an Met)#e !+s min+s $Ha&e#))rn,1@50% mer+aan t+r+nan #ari met)#e delay time +nt+ as+s an& !eih )m!es. Met)#e ini men&&+naan #+a enis ana!isis ait+ an!isis !+s time +nt+ men&ana!isa e#a!aman $#eth% #an min+s time +nt+ #eterminasi e/eatan !aisan e#+a. (a#a me)#e ini ni!ai 1 an& #i&+naan sama seerti a#a met)#e ha&iwara se#an&an ni!ai 2 #ihit+n& men&&+naan ersamaan $4% an& erni!ai 2 ms. er!ihat ahwa ni!ai 2 a#a met)#e ha&e#))rn !eih esar #ari 2 a#a met)#e ha&iwara. Ha! ini #iseaan en&&+naan #ata 9 #an - an& s+#ah #ie!asan see!+mna. Semain esar ni!ai 2 aan semain #an&a! e#a!amanna. !eh sea it+ har&a e#a!aman a#a met)#e ha&e#))rn erni!ai !eih e/i! $!eih #an&a!%. Se#an&an s)ftware Seisrefa #i&+naan +nt+ men&etah+i eraa ana !aisan, e/eatan #an e#a!aman #i tia !aisan. Kita aan men#aatan #+a !aisan #en&an ni!ai ait+ 0.77 ms, se#an&an 2 memi!ii ni!ai an& /++ ere#a ait+ 2.' ms #an ita +&a aan men#aatan em)#e!an awah erm+aan an& !eih #a!am #ari e#+a met)#e. As+msi awa! #ari ana!isis e#a!aman #en&an s)ftware ini ait+ hasi! em)#e!an #ari #ata i/in& !eih a+rat #ian#in&an #en&an erhit+n&an man+a! #i Ms . BC/e!
Met)#e Ha&iwara !eih terf)+s a#a a&aimana /ara men&etah+i e#a!aman !aisan #iawah tia &e)h)ne an& first-break &e!)man&na mer+aan &e!)man& ias $+nt+ !aisan an& er+n#+!asi n)n-h)ri)nta!% saa. Se#an&an met)#e ha&e#))rn !eih terf)+s a#a a&aimana men&etah+i e/eatan !aisan an& ti#a )nstan, !aisan an& #itina+ ti#a har+s er+a h)ri)nta! !aer!atera! #an +&a #aat #i&+naan +nt+ erm+aan an& er+n#+!asi.
