International Federation of Digital Seismograph Networks

YO (2003-2006): Tomography Under Costa Rica and Nicaragua

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FDSN Network Information

FDSN code YO (2003-2006) Operated by IRIS/PASSCAL
Network name Tomography Under Costa Rica and Nicaragua (TUCAN) Deployment region
Start date Jan. 1, 2003 End date Dec. 31, 2006
Short description

This broadband array provides imaging of the subducting plate, mantle wedge and overlying lithosphere beneath the Central American arc in Nicaragua and Costa Rica. It forms a key element of the MARGINS Subduction Factory focus site efforts in Central America, with a goal of understanding magma formation beneath arcs in a place that exhibits large along-strike gradients in arc geochemistry. The array features two dense lines, 10 km spacing, one through central Nicaragua where flux of slab-derived fluids reaches a global maximum, and a second through northern Costa Rica where magmas show little geochemical signature of subducting sediments. Sparser cross lines provide sampling of along-strike variations in the arc, and control in the backarc. Primary studies include imaging with scattered teleseismic coda, P,S, and attenuation tomography, shear wave splitting, surface wave imaging, and studies of earthquake sources.

Further information in publication(s)

Citation Information

Digital Object Identifier (DOI)
Geoffrey A. Abers, Karen M. Fischer (2003): Tomography Under Costa Rica and Nicaragua. International Federation of Digital Seismograph Networks. Other/Seismic Network. 10.7914/SN/YO_2003

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