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Shocks driven by Coronal Mass Ejections (CMEs) are primary agents of spaceweather. They can accelerate particles to high energies and can compress themagnetosphere thus setting in motion geomagnetic storms. For many years, theseshocks were studied only in-situ when they crossed over spacecraft or remotelythrough their radio emission spectra. Neither of these two methods providesinformation on the spatial structure of the shock nor on its relationship toits driver, the CME. In the last decade, we have been able to not only imageshocks with coronagraphs but also measure their properties remotely through theuse of spectroscopic and image analysis methods. Thanks to instrumentation onSTEREO and SOHO we can now image shocks (and waves) from the low corona,through the inner heliosphere, to Earth. Here, we review the progress made inimaging and analyzing CME-driven shocks and show that joint coronagraphic andspectrscopic observations are our best means to understand shock physics closeto the Sun.

A Decade of Coronagraphic and Spectroscopic Studies of CME-Driven Shocks