SQLX is an indispensable quality control tool for seismologists. By analyzing Probability Density Functions (PDFs) SQLX enables seismologists to identify many quality issues that can have an adverse affect on seismic analysis. An example of the quality issues that can be identified using PDF analysis include:
Site Response Analysis, such as:
SQLX also offers server side functionality, such as:
Following are some sample outputs that demonstrate the utility of SQLX:
Good Quality Data
This example displays PDF and spectrogram plots representing 3 channels over a one month period. SQLX is able to confirm that this station is producing good quality, useful data.