Third-party borehole seismic experiments during the Ocean Drilling Program
Stephen, Ralph A.
Swift, Stephen A.
Bolmer, S. Thompson
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The first borehole seismic experiments on DSDP and ODP were two-ship Oblique Seismic Experiments (Stephen, 1979; Stephen, et al., 1979, 1980; Swift, et al., 1988). By recording on the drill ship and shooting explosives out to ranges of 8 km, the upper 1.5 km of the upper crust (Layer 2) adjacent to the borehole could be imaged (Fig. 1; Stephen and Harding, 1983), Azimuthal anisotropy (Stephen, 1981, 1985) and lateral heterogeneity (Stephen, 1988; Swift and Stephen, 1989) could also be studied by shooting circles of shots at a fixed range from the borehole,
© The Author(s), 2007. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Drilling Sepecial Iss. (2007): 107-109, doi:10.2204/iodp.sd.s01.08.2007.
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Stephen, Ralph A.; Koelsch, Donald E.; Berteaux, Henri O.; Bocconcelli, Alessandro; Bolmer, S. Thompson; Cretin, J.; Etourmy, N.; Fabre, A.; Goldsborough, Robert G.; Gould, Matthew R.; Kery, Sean M.; Laurent, J.; Omnes, G.; Peal, Kenneth R.; Swift, Stephen A.; Turpening, R.; Zani, A. Cleo (Woods Hole Oceanographic Institution, 1993-01)The Seafloor Borehole Array Seismic System (SEABASS) has been developed to measure the pressure and three dimensional particle velocity of the VLF sound field (2-50HZ) below the seafloor in the deep ocean (water depths ...
Stephen, Ralph A.; Worcester, Peter F.; Udovydchenkov, Ilya A.; Aaron, Ernie; Bolmer, S. Thompson; Carey, Scott; McPeak, Sean P.; Swift, Stephen A.; Dzieciuch, Matthew A. (Woods Hole Oceanographic Institution, 2014-12)The Ocean Bottom Seismometer Augmentation in the North Pacific Experiment (OBSANP, June-July, 2013, R/V Melville) addresses the coherence and depth dependence of deep-water ambient noise and signals. During the 2004 NPAL ...
Stephen, Ralph A.; Swift, Stephen A.; Bolmer, S. Thompson (Woods Hole Oceanographic Institution, 1987-03)This report describes a preliminary analysis of borehole seismic data to determine VLF/Sub-bottom Seismic Noise in the Atlantic and the preliminary results of finite difference modelling for a Cape Fear environment. Noise ...