# dv/v Files Supplementary Material

This directory contains the dv/v measurements prepared by Yates et al (2024) using stretching technique. The data is organized into several categories and filters as described below.

Filter 2 (f2) = 1.0 - 2.0 Hz
Filter 3 (f3) = 2.0 - 4.0 Hz
Filter 4 (f4) = 0.5 - 1.0 Hz

Averaged results (i.e. singlestation_SC_avg and statpair_ZZ_avg) correspond to those shown in Figure 2 of maintext.

For individual single-station results, 'SC' corresponds to average of three cross-components (EN, EZ, and NZ). These averaged results are shown in Figure 5.

dv/v for each component pair of single stations (EN, EZ, NZ) and each station-pair (ZZ) are also provided.

m5 = stack length of 5-days
coh0.5 = minimum correlation coefficient set to 0.5, otherwise dv/v set to NaN

Data within each file is contained within three columns. The first is the datetime, second dv/v, and third the corresponding correlation coefficient (from stretching).

## Directory Structure

YatesA_stromboli_dvv_files/
    ├── singlestation_EN/
    │   ├── filter 2/
    │   │   ├── dvv_IST3_EN_f2_m5_coh0.5
    │   │   ├── dvv_ISTR_EN_f2_m5_coh0.5
    │   │   └── ...
    │   ├── filter 3/
    │   │   ├── dvv_IST3_EN_f3_m5_coh0.5
    │   │   ├── dvv_ISTR_EN_f3_m5_coh0.5
    │   │   └── ...
    │   └── filter 4/
    │   │   ├── dvv_IST3_EN_f4_m5_coh0.5
    │   │   ├── dvv_ISTR_EN_f4_m5_coh0.5
    │   │   └── ...
    ├── singlestation_EZ/
    │   ├── filter 2/
    │   │   ├── dvv_IST3_EZ_f2_m5_coh0.5
    │   │   ├── dvv_ISTR_EZ_f2_m5_coh0.5
    │   │   └── ...
    │   ├── filter 3/
    │   │   ├── dvv_IST3_EZ_f3_m5_coh0.5
    │   │   ├── dvv_ISTR_EZ_f3_m5_coh0.5
    │   │   └── ...
    │   └── filter 4/
    │   │   ├── dvv_IST3_EZ_f4_m5_coh0.5
    │   │   ├── dvv_ISTR_EZ_f4_m5_coh0.5
    │   │   └── ...   
    ├── singlestation_NZ/
    │   ├── filter 2/
    │   │   ├── dvv_IST3_NZ_f2_m5_coh0.5
    │   │   ├── dvv_ISTR_NZ_f2_m5_coh0.5
    │   │   └── ...
    │   ├── filter 3/
    │   │   ├── dvv_IST3_NZ_f3_m5_coh0.5
    │   │   ├── dvv_ISTR_NZ_f3_m5_coh0.5
    │   │   └── ...
    │   └── filter 4/
    │   │   ├── dvv_IST3_NZ_f4_m5_coh0.5
    │   │   ├── dvv_ISTR_NZ_f4_m5_coh0.5
    │   │   └── ...   
    ├── singlestation_SC/
    │   ├── filter 2/
    │   │   ├── dvv_IST3_SC_f2_m5_coh0.5
    │   │   ├── dvv_ISTR_SC_f2_m5_coh0.5
    │   │   └── ...
    │   ├── filter 3/
    │   │   ├── dvv_IST3_SC_f3_m5_coh0.5
    │   │   ├── dvv_ISTR_SC_f3_m5_coh0.5
    │   │   └── ...
    │   └── filter 4/
    │   │   ├── dvv_IST3_SC_f4_m5_coh0.5
    │   │   ├── dvv_ISTR_SC_f4_m5_coh0.5
    │       └── ...
    ├── singlestation_SC_avg/
    │   ├── filter 2/
    │   │   └── dvv_singlestat_avg_f2_m5_coh0.5
    │   ├── filter 3/
    │   │   └── dvv_singlestat_avg_f3_m5_coh0.5
    │   └── filter 4/
    │       └── dvv_singlestat_avg_f4_m5_coh0.5
    └── statpair_ZZ/
    │   ├── filter 2/
    │   │   ├── dvv_IST3_ISTR_ZZ_f2_m5_coh0.5
    │   │   ├── dvv_IST3_STR1_ZZ_f2_m5_coh0.5
    │   │   └── ...
    │   ├── filter 3/
    │   │   ├── dvv_IST3_ISTR_ZZ_f3_m5_coh0.5
    │   │   ├── dvv_IST3_STR1_ZZ_f3_m5_coh0.5
    │   │   └── ...
    │   └── filter 4/
    │   │   ├── dvv_IST3_ISTR_ZZ_f4_m5_coh0.5
    │   │   ├── dvv_IST3_STR1_ZZ_f4_m5_coh0.5
    │   │   └── ... 
    └── statpair_ZZ_avg/       
        ├── filter 2/
        │   └── dvv_statpair_avg_f2_m5_coh0.5
        ├── filter 3/
        │   └── dvv_statpair_avg_f3_m5_coh0.5
        └── filter 4/
            └── dvv_statpair_avg_f4_m5_coh0.5

