Pak Awang Kalau gempanya pada kedalaman 50 Km padahal ketebalan kerak hanya 30-40 Km apakah ini sesar geser Mentawai ? Berapa ketebalan kerak benua di Sumatra ?
RDP On Sun, Aug 16, 2009 at 4:26 PM, Awang Satyana <[email protected]>wrote: > Sebuah gempa cukup besar (7.0 Mw, 6.9 SR) baru saja terjadi (pukul 14.38 > WIB) di wilayah perairan Sumatra Barat dan menggoncang wilayah di > sekitarnya, terutama Provinsi Sumatra Barat. Kedalaman gempa yang dilaporkan > BMG (data sementara) adalah 38 km, meskipun menurut data sementara USGS > kedalaman fokus gempa 50,8 km (seperti data detail di bawah). > > Secara tektonik, episentrum gempa tepat berlokasi di sesar dextral Mentawai > Fault, di sebelah timur Pulau Siberut, pada perairan forearc basin. Momen > tensor solution sampai tulisan ini dibuat belum tercantum di data USGS; > kemungkinan besar merupakan pemetahan mendatar sebagaimana sesar > regionalnya. > > Kerusakan yang terjadi dan korban belum diketahui. > > Earthquake Details (USGS) > Magnitude 7.0 > Date-Time Sunday, August 16, 2009 at 07:38:26 UTC > Sunday, August 16, 2009 at 02:38:26 PM at epicenter > Time of Earthquake in other Time Zones > > Location 1.409°S, 99.494°E > Depth 50.8 km (31.6 miles) > Region KEPULAUAN MENTAWAI REGION, INDONESIA > Distances 110 km (65 miles) WSW of Padang, Sumatra, Indonesia > 305 km (190 miles) SW of Pekanbaru, Sumatra, Indonesia > 560 km (345 miles) SSW of KUALA LUMPUR, Malaysia > 960 km (600 miles) WNW of JAKARTA, Java, Indonesia > > Location Uncertainty horizontal +/- 7.5 km (4.7 miles); depth +/- 13.9 km > (8.6 miles) Parameters NST= 54, Nph= 54, Dmin=683.7 km, Rmss=1.03 sec, Gp= > 40°, M-type=teleseismic moment magnitude (Mw), Version=7 > Source USGS NEIC (WDCS-D) > > Kemungkinan tsunami kecil menurut NOAA, tetapi itu berdasarkan historic > data. Diharapkan pejabat setempat mewaspadai, terutama di radius 100 km dari > episentrum gempa ke arah Pulau Sumatra. > > TSUNAMI BULLETIN NUMBER 001 > PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS > ISSUED AT 0749Z 16 AUG 2009 > > THIS BULLETIN IS FOR ALL AREAS OF THE INDIAN OCEAN. > > ... TSUNAMI INFORMATION BULLETIN ... > > THIS MESSAGE IS FOR INFORMATION ONLY. > > THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY > NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE > DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND > ANY ACTIONS TO BE TAKEN IN RESPONSE. > > AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS > > ORIGIN TIME - 0738Z 16 AUG 2009 > COORDINATES - 1.6 SOUTH 99.4 EAST > LOCATION - SOUTHERN SUMATRA INDONESIA > MAGNITUDE - 6.9 > > EVALUATION > > A DESTRUCTIVE WIDESPREAD TSUNAMI THREAT DOES NOT EXIST BASED ON > HISTORICAL EARTHQUAKE AND TSUNAMI DATA. > > HOWEVER - THERE IS A VERY SMALL POSSIBILITY OF A LOCAL TSUNAMI > THAT COULD AFFECT COASTS LOCATED USUALLY NO MORE THAN A HUNDRED > KILOMETERS FROM THE EARTHQUAKE EPICENTER. AUTHORITIES IN THE > REGION NEAR THE EPICENTER SHOULD BE MADE AWARE OF THIS > POSSIBILITY. > > salam, > Awang > > > > > > > -------------------------------------------------------------------------------- > PP-IAGI 2008-2011: > ketua umum: LAMBOK HUTASOIT, [email protected] > sekjen: MOHAMMAD SYAIFUL, [email protected] > * 2 sekretariat (Jkt & Bdg), 5 departemen, banyak biro... > > -------------------------------------------------------------------------------- > ayo meriahkan PIT ke-38 IAGI!!! > yg akan dilaksanakan di Hotel Gumaya, Semarang > 13-14 Oktober 2009 > > ----------------------------------------------------------------------------- > 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 > <http://www.mail-archive.com/iagi-net%40iagi.or.id/%0AIAGI-net>Archive 2: > http://groups.yahoo.com/group/iagi > --------------------------------------------------------------------- > DISCLAIMER: IAGI disclaims all warranties with regard to information posted > on its mailing lists, whether posted by IAGI or others. In no event shall > IAGI and its members be liable for any, including but not limited to direct > or indirect damages, or damages of any kind whatsoever, resulting from loss > of use, data or profits, arising out of or in connection with the use of any > information posted on IAGI mailing list. > --------------------------------------------------------------------- > > -- http://rovicky.wordpress.com/2009/08/10/krisis-ekonomi-sampai-kapan/
