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Title: Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry

Abstract

The internal structure of the Moon has been investigated over many years using a variety of seismic methods, such as travel time analysis, receiver functions, and tomography. Here we propose to apply body-wave seismic interferometry to deep moonquakes in order to retrieve zero-offset reflection responses (and thus images) beneath the Apollo stations on the nearside of the Moon from virtual sources colocated with the stations. This method is called deep-moonquake seismic interferometry (DMSI). Our results show a laterally coherent acoustic boundary around 50 km depth beneath all four Apollo stations. We interpret this boundary as the lunar seismic Moho. This depth agrees with Japan Aerospace Exploration Agency's (JAXA) SELenological and Engineering Explorer (SELENE) result and previous travel time analysis at the Apollo 12/14 sites. The deeper part of the image we obtain from DMSI shows laterally incoherent structures. Finally, such lateral inhomogeneity we interpret as representing a zone characterized by strong scattering and constant apparent seismic velocity at our resolution scale (0.2–2.0 Hz).

Authors:
 [1]; ORCiD logo [2];  [1];  [1]
  1. Delft Univ. of Technology (Netherlands). Dept. of Geoscience and Engineering
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1495125
Report Number(s):
LA-UR-15-27729
Journal ID: ISSN 2169-9097
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Geophysical Research. Planets
Additional Journal Information:
Journal Volume: 121; Journal Issue: 4; Journal ID: ISSN 2169-9097
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Planetary Sciences; lunar structure; moonquakes

Citation Formats

Nishitsuji, Yohei, Rowe, Charlotte Anne, Wapenaar, Kees, and Draganov, Deyan. Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry. United States: N. p., 2016. Web. doi:10.1002/2015JE004975.
Nishitsuji, Yohei, Rowe, Charlotte Anne, Wapenaar, Kees, & Draganov, Deyan. Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry. United States. doi:10.1002/2015JE004975.
Nishitsuji, Yohei, Rowe, Charlotte Anne, Wapenaar, Kees, and Draganov, Deyan. Sat . "Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry". United States. doi:10.1002/2015JE004975. https://www.osti.gov/servlets/purl/1495125.
@article{osti_1495125,
title = {Reflection imaging of the Moon's interior using deep-moonquake seismic interferometry},
author = {Nishitsuji, Yohei and Rowe, Charlotte Anne and Wapenaar, Kees and Draganov, Deyan},
abstractNote = {The internal structure of the Moon has been investigated over many years using a variety of seismic methods, such as travel time analysis, receiver functions, and tomography. Here we propose to apply body-wave seismic interferometry to deep moonquakes in order to retrieve zero-offset reflection responses (and thus images) beneath the Apollo stations on the nearside of the Moon from virtual sources colocated with the stations. This method is called deep-moonquake seismic interferometry (DMSI). Our results show a laterally coherent acoustic boundary around 50 km depth beneath all four Apollo stations. We interpret this boundary as the lunar seismic Moho. This depth agrees with Japan Aerospace Exploration Agency's (JAXA) SELenological and Engineering Explorer (SELENE) result and previous travel time analysis at the Apollo 12/14 sites. The deeper part of the image we obtain from DMSI shows laterally incoherent structures. Finally, such lateral inhomogeneity we interpret as representing a zone characterized by strong scattering and constant apparent seismic velocity at our resolution scale (0.2–2.0 Hz).},
doi = {10.1002/2015JE004975},
journal = {Journal of Geophysical Research. Planets},
number = 4,
volume = 121,
place = {United States},
year = {2016},
month = {4}
}

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