Lithosphere-scale seismic image of the southern urals from explosion- source reflection profiling

Science

Volumn 274, Issue 5285, 1996, Pages 226-228

  Knapp, J H ^a   Steer, D N ^a   Brown, L D ^a   Berzin, R ^b   Suleimanov, A ^b   Stiller, M ^c   Luschen E ^c   Brown, D L ^d   Bulgakov, R ^e   Kashubin, S N ^f   Rybalka, A V ^f  

^a Department of Population Medicine and Diagnostic Sciences   (United States)

^b Spetsgeofisika   (Russian Federation)

^c GFZ GERMAN RESEARCH CENTRE FOR GEOSCIENCES   (Germany)

^d INSTITUTE OF EARTH SCIENCES JAUME ALMERA   (Spain)

^e Bashneftegeofizika   (Russian Federation)

^f Bazhenov Geophysical Expedition   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; EARTHQUAKE; GEOGRAPHY; GEOLOGY; GEOMETRY; PRIORITY JOURNAL; USSR; VELOCITY; WAVEFORM;

COLLISION; LITHOSPHERE STRUCTURE; SEISMIC REFLECTION;

RUSSIAN FEDERATION, URALS;

EID: 0029663987     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.274.5285.226     Document Type: Article

References (15)

1. R. Berzin et al., Science 274, 220 (1996); H. P. Echtler et al., ibid., p. 224. The experimental design consisted of a recording spread with 360 channels at a 50-m station spacing over 18 km, recorded by an I/O System 2 (Houston, TX). Eighty-kilogram shots were repeated twice (forward and backward shooting) every 3 km in two 30-m-deep shot holes in an off-end configuration; the signals were recorded for 65 s at a 4-ms sample rate. Processing before stack: trace editing, static time corrections to correct for elevation changes, time and space variant filtering, amplitude corrections (spherical divergence and absorption), lateral trace equalization, frequency-time deconvolution, time-phase velocity filtering, and application of a time and space variant velocity field. Processing after stack: frequency-time deconvolution filter, coherency filter, migration [using smoothed interval velocity function derived from the velocity model of Carbonell et al. (4)]. Final display, 1:1 at 6 km/s.
2. R. Berzin et al., Science 274, 220 (1996); H. P. Echtler et al., ibid., p. 224. The experimental design consisted of a recording spread with 360 channels at a 50-m station spacing over 18 km, recorded by an I/O System 2 (Houston, TX). Eighty-kilogram shots were repeated twice (forward and backward shooting) every 3 km in two 30-m-deep shot holes in an off-end configuration; the signals were recorded for 65 s at a 4-ms sample rate. Processing before stack: trace editing, static time corrections to correct for elevation changes, time and space variant filtering, amplitude corrections (spherical divergence and absorption), lateral trace equalization, frequency-time deconvolution, time-phase velocity filtering, and application of a time and space variant velocity field. Processing after stack: frequency-time deconvolution filter, coherency filter, migration [using smoothed interval velocity function derived from the velocity model of Carbonell et al. (4)]. Final display, 1:1 at 6 km/s.
3. All travel times are given in two-way travel time. Corresponding depths are derived from an average crust-a velocity of 6 km/s and mantle velocity of 8 km/s.
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8. J. Mechie et al., Phys. Earth Planet. Inter. 79, 269 (1993); K. Priestley, J. Cipar, A. Egorkin, N. Pavlenkova, Geophys. J. Int. 118, 369 (1994); T. Ryberg, K. Fuchs, A. V. Egorkin, L. Solodilov, J. Geophys. Res. 100, 18151 (1995).
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11. J. E. Lie, T. Pedersen, E. S. Husebye, Nature 346, 165 (1990); D. J. Baird, J. H. Knapp, D. N. Steer, L. D. Brown, K. D. Nelson, Geology 23, 431 (1995); S. E. McGeary and M. R. Warner, Nature 317, 795 (1985); M. Warner et al., Geology 24, 39 (1996).
12. J. E. Lie, T. Pedersen, E. S. Husebye, Nature 346, 165 (1990); D. J. Baird, J. H. Knapp, D. N. Steer, L. D. Brown, K. D. Nelson, Geology 23, 431 (1995); S. E. McGeary and M. R. Warner, Nature 317, 795 (1985); M. Warner et al., Geology 24, 39 (1996).
13. J. E. Lie, T. Pedersen, E. S. Husebye, Nature 346, 165 (1990); D. J. Baird, J. H. Knapp, D. N. Steer, L. D. Brown, K. D. Nelson, Geology 23, 431 (1995); S. E. McGeary and M. R. Warner, Nature 317, 795 (1985); M. Warner et al., Geology 24, 39 (1996).
14. J. E. Lie, T. Pedersen, E. S. Husebye, Nature 346, 165 (1990); D. J. Baird, J. H. Knapp, D. N. Steer, L. D. Brown, K. D. Nelson, Geology 23, 431 (1995); S. E. McGeary and M. R. Warner, Nature 317, 795 (1985); M. Warner et al., Geology 24, 39 (1996).
15. Funding for this research was provded by the Continental Dynamics Program (NSF grant EAR-9418251 to Cornell University), ROSCOMNEDRA (Committee on Geology and Use of Mineral Resources of the Russian Federation), the program DEKORP 2000 (grant 03GT94101) by the German Federal Ministry of Science and Technology, and the GeoForschungsZentrum Potsdam; the project also benefited from funding by the German Science Foundation, Comisión Interministerial de Ciencia y Technología (Spain) (AMB 95-0987E), and International Association for the Cooperation with Scientists from the Former Soviet Union grant NTAS 94-1857, This research was developed and carried out in association with the EUROPROBE Urals Project. This is Institute for the Study of the Continents contribution 228.