Simple Broadband Data Processing in Matlab

Simple Broadband Data Processing in Matlab 1h 45min Advanced Resource Files Exercise Introduction Slides Data and Functions Download All 18MB Broadband instruments are velocity sensors, which record data over a large range of frequencies (typically tens of Hz to around 0.01 Hz or lower). Early observatories would typically consist of multiple instruments sensitive to various frequency bands to replicate a broadband overall response. Because different Earth processes excite energy at various frequencies, understanding and broadening the response spectrum of instruments allows for observing more phenomena. Topics explored include the follwoing. Integration and Differentiation Long Period Seismograms Anthropogenic noise Spectral Analysis Plotting expected phase arrivals with TauP Toolkit Forward Model with Generalized Ray Theory This exercise was developed by Rob Porritt at University of Texas at Austin (rporritt@ig.utexas.edu) and used as part of the IRIS Internship Orientation Week. Objectives: Students will be able to: Manipulate time series data in a processing environment (Matlab) Convert data from the raw format in digital counts to true ground motion Filter seismograms for analysis within various frequency bands Isolate ground motion from teleseismic earthquakes Visualize anthropogenic sources of noise on records Describe the full spectrum of data returned by broadband instruments