Kees  Weemstra

Kees Weemstra

Researcher
R&D Seismology and Acoustics

About me

I am assistant professor of seismo-acoustics in the Applied Geophysics & Petrophysics section at Delft University of Technology. My position is partly funded by the Royal Netherlands Meteorological Institute (KNMI) and I work in close collaboration with their seismology division. My own research evolves around (but is not limited to) seismic interferometry: using cross-correlations and/or deconvolutions of existing signals to reconstruct new suburface or atmospheric responses. The existing signals can be either active, i.e., man-made sources, or passive, e.g., seismic energy due to oceanic waves coupling into the solid Earth or the atmosphere. The newly generated responses may serve as input to tomographic inverse problems or can be used to estimate structural changes of the medium. Currently, my research involves (i) the application of existing interferometric techniques to learn about the Earth's properties and (ii) the development of improved methodologies. Interferometric techniques can be applied on many scales (from imaging rift zones to the behavior of rocks in a labarotory) and to various media (solid Earth, oceans, and atmosphere). For the development of improved methodologies, I recently focused on a technique called interferometry by multidimensional deconvolution, which allows the reconstruction of more accurate responses.