Geophysical Research Letters
Supporting Information for
Location of High-Frequency P-wave Microseismic Noise in the Pacific Ocean Using
Multiple Small Aperture Arrays
Moira L. Pyle1, Keith D. Koper2, Garrett G. Euler3, and Relu Burlacu2
1
2
Lawrence Livermore National Laboratory
7000 East Ave.
Livermore, CA 94550
pyle4@llnl.gov
925-423-3820
Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, USA
3
Los Alamos National Laboratory, Los Alamos, NM, USA
Contents of this file
Figures S1 to S3
Introduction
This file contains three figures that illustrate components described in the main
article’s methods section. The first figure shows array responses at 1 Hz for all 5 arrays
used in the paper, the second figure displays the grid we used in the array backprojection, and the third figure shows maps of the amplification coefficients at discrete
and narrow-band frequencies.
1
Figure S1. Array responses for a vertically incident wave at 1.0 Hz for (a) ASAR, (b)
CMAR, (c) ILAR, (d) KSRS, and (e) YKA.
In each panel, circles are drawn for
velocities of 25 km/sec, 8 km/sec, and 4 km/sec.
2
Figure S2. Grid used in back-projection with view centered on (a) the Pacific Ocean, (b)
Europe, (c) the South Pole, (d) the North Pole, and (e) a close up of the Pacific Ocean.
Grid spacing is approximately 200 km and contains 12,792 points.
3
Figure S3.
P-wave amplification coefficients [Gualtieri et al., 2014] at discrete
frequencies (a) 0.67 Hz, (c) 1.00 Hz, and (e) 1.33 Hz, and averaged over narrow-band
frequencies (similar to Figure 3b) (b) 0.70-0.80 Hz, (d) 0.95-1.05 Hz, and (f) 1.20-1.30
Hz.
4