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Seismic topographic scattering in the context of GW detector site selection

Coughlin, M. and Harms, J. (2012) Seismic topographic scattering in the context of GW detector site selection. Classical and Quantum Gravity, 29 (7). Art. No. 075004. ISSN 0264-9381. doi:10.1088/0264-9381/29/7/075004.

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In this paper, we present a calculation of seismic scattering from irregular surface topography in the Born approximation. Based on US-wide topographic data, we investigate topographic scattering at specific sites to demonstrate its impact on Newtonian-noise estimation and subtraction for future gravitational-wave detectors. We find that topographic scattering at a comparatively flat site in Oregon would not pose any problems, whereas scattering at a second site in Montana leads to significant broadening of wave amplitudes in wavenumber space that would make Newtonian-noise subtraction very challenging. Therefore, it is shown that topographic scattering should be included as criterion in the site-selection process of future low-frequency gravitational-wave detectors.

Item Type:Article
Related URLs:
URLURL TypeDescription
Coughlin, M.0000-0002-8262-2924
Harms, J.0000-0002-7332-9806
Additional Information:© 2012 Institute of Physics Publishing Ltd. Received 27 November 2011, in final form 3 February 2012. Published 14 March 2012. The authors gratefully acknowledge the support of the United States National Science Foundation for the construction and operation of the LIGO Laboratory. MC’s work was funded by the NSF through the California Institute of Technology’s Summer Undergraduate Fund. The authors thank Jennifer Driggers, Vuk Mandic and Gary Pavlis for many helpful discussions about seismic scattering.
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Issue or Number:7
Classification Code:PACS: 04.80.Nn, 95.55.Ym, 91.30.Fn, 07.60.Ly. MSC: 83C35, 86A15
Record Number:CaltechAUTHORS:20120420-113730355
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Official Citation: Seismic topographic scattering in the context of GW detector site selection M Coughlin and J Harms 2012 Class. Quantum Grav. 29 075004
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:30230
Deposited By: Ruth Sustaita
Deposited On:20 Apr 2012 20:06
Last Modified:12 Jul 2022 19:45

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