Sensitivity of Time-Distance Measurements to Local Changes in Sound Speed and Source Properties

Details Sensitivity of Time-Distance Measurements to Local Changes in Sound Speed and Source Properties Sensitivity of Time-Distance Measurements to Local Changes in Sound Speed and Source Properties

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh21b0163b&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH21B-0163

Computer Science

Sound

7260 Theory And Modeling, 7522 Helioseismology

Scientific paper

In order to interpret time-distance measurements of travel times it is important to understand the sensitivity of these measurements to different types of perturbations to a solar model. We will show example sensitivity functions for local perturbations to the sound-speed, source strength, and source correlation time. These examples show that the effect of a sound-speed perturbation on the time-distance travel-times depends on the details of the filtering. In particular, for narrow phase-speed filters, the sensitivity functions do not resemble the now traditional banana-doughnut kernels.

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