DOI: 10.5061/dryad.h44j0zpjt
title: Data from: Modeling GPS signal propagation through volcanic plumes

description: Extinction of Global Positioning System (GPS) signals has been observed at
 GPS sites located near erupting volcanoes as a decrease in the Signal to
 Noise Ratio (SNR) of recieved signals. While this effect has been used to
 detect volcanic ash plumes, the physical processes causing the signal
 extinction were not well understood. A simulation was developed to model
 absorption and scattering from ash particles in a plume which included
 plume density, composition, and charging as input parameters. The results
 of this simulation for a range of input parameters for the November 23rd,
 2013 eruption at Etna volcano.are included in this dataset and have been
 used in the article "Modeling GPS Signal Propagation through Volcanic
 Plumes."  
description: Data from the forward model for GPS signal extinction described
 in "Modeling GPS Signal Propagation through Volcanic
 Plumes."
description: The data in each .mat file represents a time series vector, dt_v,
 and an attenuation vector, atn_v. The data listed below maps to the
 results in Figure 7, with each dataset in order with the figure
 legend.  Figure 7, Upper Left:
 mat/epdn_FIX_l1_633_20_23_016_032_258_Inf.mat<br> Figure 7, Upper
 Left: mat/epdn_FIX_l1_633_20_23_016_032_258_Inf.mat<br> Figure 7,
 Upper Left: mat/epdn_FIX_R_l1_633_20_23_016_032_258_Inf.mat<br>
 Figure 7, Upper Center:
 mat/epdn_FIX_l1_633_09_23_016_032_258_Inf.mat<br> Figure 7, Upper
 Center: mat/epdn_FIX_l1_633_20_23_016_032_258_Inf.mat<br> Figure 7,
 Upper Center: mat/epdn_FIX_l1_633_32_23_016_032_258_Inf.mat<br>
 Figure 7, Upper Center:
 mat/epdn_FIX_l1_506_09_23_016_032_258_Inf.mat<br> Figure 7, Upper
 Center: mat/epdn_FIX_l1_760_32_23_016_032_258_Inf.mat<br> Figure 7,
 Upper Right: mat/epdn_FIX_l1_633_20_23_016_032_258_Inf.mat<br>
 Figure 7, Upper Right:
 mat/epdn_FIX_l1_8570_1410_23_016_032_258_Inf.mat<br> Figure 7, Upper
 Right: mat/epdn_FIX_l1_3150_19600_23_016_032_258_Inf.mat<br> Figure
 7, Lower Left: mat/epdn_FIX_l1_633_20_20_016_032_258_Inf.mat<br>
 Figure 7, Lower Left:
 mat/epdn_FIX_l1_633_20_21_016_032_258_Inf.mat<br> Figure 7, Lower
 Left: mat/epdn_FIX_l1_633_20_22_016_032_258_Inf.mat<br> Figure 7,
 Lower Left: mat/epdn_FIX_l1_633_20_23_016_032_258_Inf.mat<br> Figure
 7, Lower Left: mat/epdn_FIX_l1_633_20_24_016_032_258_Inf.mat<br>
 Figure 7, Lower Left:
 mat/epdn_FIX_l1_633_20_25_016_032_258_Inf.mat<br> Figure 7, Lower
 Center: mat/epdn_FIX_l1_633_20_23_013_032_258_Inf.mat<br> Figure 7,
 Lower Center: mat/epdn_FIX_l1_633_20_23_016_032_258_Inf.mat<br>
 Figure 7, Lower Center:
 mat/epdn_FIX_l1_633_20_23_020_032_258_Inf.mat<br> Figure 7, Lower
 Center: mat/epdn_FIX_l1_633_20_23_022_032_258_Inf.mat<br> Figure 7,
 Lower Right: mat/epdn_FIX_l1_633_20_23_016_032_150_Inf.mat<br>
 Figure 7, Lower Right:
 mat/epdn_FIX_l1_633_20_23_016_032_170_Inf.mat<br> Figure 7, Lower
 Right: mat/epdn_FIX_l1_633_20_23_016_032_200_Inf.mat<br> Figure 7,
 Lower Right: mat/epdn_FIX_l1_633_20_23_016_032_220_Inf.mat<br>
 Figure 7, Lower Right:
 mat/epdn_FIX_l1_633_20_23_016_032_250_Inf.mat<br> Figure 7, Lower
 Right: mat/epdn_FIX_l1_633_20_23_016_032_325_Inf.mat