Goldberg, David S. (2005): Reprocessing of wireline sonic logs in turbidites and hemipelagic sediments at ODP Site 1173

Leg/Site/Hole:
ODP 190 1173
ODP 196 1173
Identifier:
2005-060952
georefid
10.2973/odp.proc.sr.190196.209.2003
doi
Creator:
Goldberg, David S.
Lamont-Doherty Earth Observatory, Borehole Research Group, Palisades, NY, United States
author
Identification:
Reprocessing of wireline sonic logs in turbidites and hemipelagic sediments at ODP Site 1173
2005
In: Moore, Gregory F., Taira, Asahiko, Klaus, Adam, Becker, Keir, Becker, Luann, Boeckel, Babette, Cragg, Barry A., Dean, P. Allison, Fergusson, Christopher L., Henry, Pierre, Hirano, Satoshi, Hisamitsu, Toshio, Hunze, Sabine, Kastner, Miriam, Maltman, Alex J., Morgan, Julia K., Murakami, Yuki, Saffer, Demian M., Sanchez-Gomez, Mario, Screaton, Elizabeth J., Smith, David C., Spivack, Arthur J., Steurer, Joan F., Tobin, Harold J., Ujiie, Kohtaro, Underwood, Michael B., Wilson, Moyra E. J., Mikada, Hitoshi, Moore, J. Casey, Austin, Gary L., Bangs, Nathan L. B., Bourlange, Sylvain, Broilliard, Julien, Brueckmann, Warner, Corn, Ernest Ray, Davis, Earl E., Flemings, Peter B., Goldberg, David S., Gulick, Sean P. S., Hansen, Martin Bak, Hayward, Nathan, Hills, Denise J., Ienaga, Masanori, Ishiguro, Hiroyasu, Kinoshita, Masataka, Macdonald, Robert D., McNeill, Lisa, Obana, Shinichi, Hong, Ong Swee, Peacock, Sheila, Pettigrew, Thomas L., Saito, Saneatsu, Sawa, Takao, Thaiprasert, Nophawit, Tsurumi, Hikaru, Proceedings of the Ocean Drilling Program; scientific results; deformation and fluid flow processes in the Nankai Trough accretionary prism; coring, logging while drilling and advanced CORKs covering Legs 190 to 196 of the cruises of the drilling vessel JOIDES Resolution; Sydney, Australia, to Yokohama, Japan, Sites 1173-1178, 23 May-16 July 2000; and Keelung, Taiwan, to Kochi, Japan, Sites 808-1173, 2 May-1 July 2001
Texas A&M University, Ocean Drilling Program, College Station, TX, United States
190/196
High-quality sonic log waveforms were recorded during Leg 190 from 65- to 360 m below seafloor (mbsf) in Hole 1173A. Schlumberger's wireline Dipole Shear Imager (DSI) tool was used, and the data were reprocessed using a phase-picking method to improve the shipboard P- and S-wave logs. This postcruise work focused on evaluating the high variability observed in the P-wave log in the upper interval of the hole and an inversion (low Vp and Vs) below 350 mbsf. In these intervals, sonic signals were weak and difficult to identify using standard shipboard processing methods. The outcome of the reprocessing was successful and extracted improved P-wave logs and S-wave values as low as 280 m/s in the upper interval of the hole and below 350 mbsf. The reprocessed data are currently available online at www.ldeo.columbia.edu/BRG/ODP/DATABASE/index.html.
English
Serial
Coverage:Geographic coordinates:
North:32.1500
West:135.0200East: 135.0200
South:32.1500
Oceanography; Applied geophysics; acoustical logging; acoustical methods; geophysical methods; geophysical surveys; hemipelagic environment; marine environment; marine sediments; Nankai Trough; North Pacific; Northwest Pacific; Ocean Drilling Program; ODP Site 1173; Pacific Ocean; Schlumberger methods; sediments; seismic methods; surveys; turbidite; waveforms; well logs; well-logging; West Pacific;
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