Understanding the earthquake frequency-magnitude distribution, known as b-value, is my another area of interest. I study the spatial distribution of b-value along the subduction interface of the Middle America Trench (MAT), near Nicoya Peninsula, Costa Rica [Ghosh et al., 2008]. Based on the spatial variation of b-value and geodetically determined interseismic locking, I demonstrate that spatial b-value mapping has potential to be used as a proxy for seismic coupling along the subduction fault. The figure shows the spatial distribution of b -value along the interface of MAT near Nicoya.
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