Terima kasih atas koreksinya ... maksud saya dengan antenna frekuensi antara 12.5 MHz - 50 MHz ..
sebagai informasi.. untuk antenna 12.5-50 MHZ ... dipakai untuk keperluan geotheknik dan lapisan sedimen dangkal. penetrasi max antara 25-50m (tergantung kondisi tanah, dan alat ) 100-500 MHz, Biasa digunakan untuk penyelidikan utilitas yang besar seperti bunker, dan beberapa keperluan geotheknik, penetrasi antara 5-20m 500-1000 MHz, digunakan untuk utilitas kecil ( semisal pipa, kabel ) dan void detection. penetrasi 2-4 m dan untuk 1 GHz keatas digunakan khusus untuk concrete evaluation ( civil engineering purpose ) dan small void detection penetrasi max antara 0.5-1 m. Untuk informasi detail bisa hubungi Pak Sanny TG ITB,atau Pak Wahyudi TG ITB, kebetulan saya pernah berkerja dengan beliau dalam beberapa proyek GPR. Beberapa diantaranya, Untuk deteksi Pipa PAM Jaya, Utilitas Mapping PT. Summarecon , dan Deteksi Terowongan Sasak Saat di Padalarang. Terima kasih semoga bermanfaat Asrori --- Befriko Murdianto <[EMAIL PROTECTED]> wrote: > Setahu saya, range frekuensi GPR antara ratusan MHz > sampai GHz. Mungkin ada > beberapa tipe khusus yg frekeuensinya rendah supaya > penetrasinya lebih dalam? > > bsm > > At 05:19 PM 6/15/2007, you wrote: > >kalau GPR 12.5Hz-50Hz, apa tidak terlalu rendah? > >atau memang segitu frekuensi GPR-nya? > > > > > >--pta > > > > > >On 6/15/07, Moch Asrori <[EMAIL PROTECTED]> > wrote: > >>Dear Pak Iwan > >> > >>Untuk cari shallow sediment, biasanya digunakan > GPR > >>khusus, yang unshielded (yang source dan receiver > >>trandusernya pisah), dengan frekuensi rendah > antara > >>12.5 Hz-50 Hz, kemudian metode yang di gunakan > bisa > >........................... > > > >---------------------------------------------------------------------------- > >Hot News!!! > >CALL FOR PAPERS: send your abstract by 30 March > 2007 to [EMAIL PROTECTED] > >Joint Convention Bali 2007 - The 32nd HAGI, the > 36th IAGI, and the > >29th IATMI Annual Convention and Exhibition, > >Bali Convention Center, 13-16 November 2007 > >---------------------------------------------------------------------------- > >To unsubscribe, send email to: > iagi-net-unsubscribe[at]iagi.or.id > >To subscribe, send email to: > iagi-net-subscribe[at]iagi.or.id > >Visit IAGI Website: http://iagi.or.id > >Pembayaran iuran anggota ditujukan ke: > >Bank Mandiri Cab. Wisma Alia Jakarta > >No. Rek: 123 0085005314 > >Atas nama: Ikatan Ahli Geologi Indonesia (IAGI) > >Bank BCA KCP. Manara Mulia > >No. Rekening: 255-1088580 > >A/n: Shinta Damayanti > >IAGI-net Archive 1: > http://www.mail-archive.com/iagi-net%40iagi.or.id/ > >IAGI-net Archive 2: > http://groups.yahoo.com/group/iagi > >--------------------------------------------------------------------- > > > ---------------------------------------------------------------------------- > Hot News!!! > CALL FOR PAPERS: send your abstract by 30 March 2007 > to [EMAIL PROTECTED] > Joint Convention Bali 2007 - The 32nd HAGI, the 36th > IAGI, and the > 29th IATMI Annual Convention and Exhibition, > Bali Convention Center, 13-16 November 2007 > ---------------------------------------------------------------------------- > To unsubscribe, send email to: > iagi-net-unsubscribe[at]iagi.or.id > To subscribe, send email to: > iagi-net-subscribe[at]iagi.or.id > Visit IAGI Website: http://iagi.or.id > Pembayaran iuran anggota ditujukan ke: > Bank Mandiri Cab. Wisma Alia Jakarta > No. Rek: 123 0085005314 > Atas nama: Ikatan Ahli Geologi Indonesia (IAGI) > Bank BCA KCP. Manara Mulia > No. Rekening: 255-1088580 > A/n: Shinta Damayanti > IAGI-net Archive 1: > http://www.mail-archive.com/iagi-net%40iagi.or.id/ > IAGI-net Archive 2: > http://groups.yahoo.com/group/iagi > --------------------------------------------------------------------- > > ____________________________________________________________________________________ Need Mail bonding? Go to the Yahoo! Mail Q&A for great tips from Yahoo! Answers users. http://answers.yahoo.com/dir/?link=list&sid=396546091 ---------------------------------------------------------------------------- Hot News!!! CALL FOR PAPERS: send your abstract by 30 March 2007 to [EMAIL PROTECTED] Joint Convention Bali 2007 - The 32nd HAGI, the 36th IAGI, and the 29th IATMI Annual Convention and Exhibition, Bali Convention Center, 13-16 November 2007 ---------------------------------------------------------------------------- To unsubscribe, send email to: iagi-net-unsubscribe[at]iagi.or.id To subscribe, send email to: iagi-net-subscribe[at]iagi.or.id Visit IAGI Website: http://iagi.or.id Pembayaran iuran anggota ditujukan ke: Bank Mandiri Cab. Wisma Alia Jakarta No. Rek: 123 0085005314 Atas nama: Ikatan Ahli Geologi Indonesia (IAGI) Bank BCA KCP. Manara Mulia No. Rekening: 255-1088580 A/n: Shinta Damayanti IAGI-net Archive 1: http://www.mail-archive.com/iagi-net%40iagi.or.id/ IAGI-net Archive 2: http://groups.yahoo.com/group/iagi ---------------------------------------------------------------------
