DOI: 10.1029/96gl01322. Reflections from a distant subduction zone

Reflections from a distant subduction zone

10.1029/96gl01322

Crossref journal-article

American Geophysical Union (AGU)

Geophysical Research Letters (13)

Abstract

Accurate models of the distribution of heterogeneities in the Earth's mantle, especially of subduction zones, are crucial for our understanding of the composition and dynamics of the Earth. Here we present broad‐band (BB) seismograms with P‐waves reflected at the subduction zone under southern Japan at about 84° distance from German Regional Seismic Network. The earthquakes occurred in the Mariana Islands region at 100° to 105° distance. Array techniques allow the separation of this wave with an asymmetric path (P1P2) from reflections and conversions under the source, the receivers and the midpoint between the source and the receivers. Our observation demonstrates that subduction zones can act as strong seismic reflectors and can be mapped with a depth resolution of ±20km with BB arrays at teleseismic distances. The analysis of such data will help to derive a more detailed picture of the structure of the Earth's mantle.

Bibliography

Weber, M., & Wicks, C. W. (1996). Reflections from a distant subduction zone. Geophysical Research Letters, 23(12), 1453â1456. Portico.

Authors 2

Michael Weber (first)
Charles W. Wicks (additional)

References 26 Referenced 30

10.1111/j.1365-246X.1984.tb01951.x / Geophys. J. R. Astr. Soc. / Short period S‐P conversions in the mantle at a depth near 700km by Bock G. (1984)
10.1111/j.1365-246X.1970.tb06080.x
10.1029/96JB00654
10.1111/j.1365-246X.1975.tb06200.x
10.1016/0031-9201(81)90046-7
10.1111/j.1365-246X.1971.tb01834.x
10.1785/BSSA0600030939 / Bull. Seism. Soc. Am. / The origin of precursors to core waves by Husebye E. S. (1970)
10.1029/95JB00153
10.1029/93GL01300
10.1029/96GL00422
10.1111/j.1365-246X.1991.tb06724.x
10.1016/0031-9201(75)90029-1
10.1111/j.1365-246X.1976.tb01269.x
10.1016/0040-1951(80)90125-0
10.1111/j.1365-246X.1992.tb00124.x
10.1029/GL012i010p00709
10.1029/92GL02961
10.1029/91JB01592
10.1111/j.1365-246X.1993.tb01499.x
10.1038/356678a0
10.1016/0031-9201(77)90008-5
10.1029/GL015i007p00669
10.1785/BSSA0680010133 / Bull. Seism. Soc. Am. / Long‐period reflected and converted upper mantle phases by Ward S. N. (1978)
10.1126/science.261.5127.1424
10.1785/BSSA0620010385 / Bull. Seism. Soc. Am. / Array studies of seismic waves arriving between P and PP in the distance range 90° to 115° by Wright C. (1972)
10.1029/JB074i008p02034

Dates

Type	When
Created	21 years, 7 months ago (Feb. 3, 2004, 11:36 p.m.)
Deposited	1 year, 10 months ago (Oct. 30, 2023, 9:58 p.m.)
Indexed	1 month, 2 weeks ago (July 16, 2025, 9:43 a.m.)
Issued	29 years, 3 months ago (June 1, 1996)
Published	29 years, 3 months ago (June 1, 1996)
Published Online	29 years, 3 months ago (June 1, 1996)
Published Print	29 years, 3 months ago (June 1, 1996)

Funders 0

None

BibTeX

@article{Weber_1996, title={Reflections from a distant subduction zone}, volume={23}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/96gl01322}, DOI={10.1029/96gl01322}, number={12}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Weber, Michael and Wicks, Charles W.}, year={1996}, month=jun, pages={1453–1456} }

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