@article {dunn_dual-level_2022,
	title = {A Dual-Level Magmatic System Beneath the East Pacific Rise, 9{\textdegree}N},
	journal = {Geophysical Research Letters},
	volume = {49},
	number = {18},
	year = {2022},
	note = {_eprint: https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2022GL097732},
	month = {09/2022},
	pages = {e2022GL097732},
	abstract = {Data from three co-located wide-angle ocean-bottom seismograph experiments were used to make a new two-dimensional tomographic image of the East Pacific Rise at 9{\textdegree}N. The upper half of the crustal magmatic system has a different seismic structure than the lower half, presumably corresponding with differences in melt storage and crustal cooling. The upper region is narrow (\~{}4.5 km wide at 2{\textendash}3 km depth bsf) and estimated to contain higher melt fractions; the lower region broadens with depth and contains lower melt fractions. The shape of the system suggests steeply-dipping isotherms and relatively stronger hydrothermal circulation in the upper gabbroic section of the crust, with moderately flattening isotherms and less circulation in the lower gabbroic section.},
	keywords = {East Pacific Rise, seismic anisotropy, seismic tomography},
	issn = {1944-8007},
	doi = {10.1029/2022GL097732},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1029/2022GL097732},
	author = {Dunn, Robert A.}
}
