Auxiliary material for this article contains details on instrument locations on the seafloor, additional record-sections showing data quality, illustrations of tomographic predictions and results using different starting models, and the tomographic results for Lines 9a and 9b.

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grl27525-sup-0001-readme.txtplain text document4Kreadme.txt
grl27525-sup-0002-ts01.pdfPDF document15KTable S1. Locations of relocated instruments along Line 8.
grl27525-sup-0003-ts02.pdfPDF document10KTable S2. Locations of relocated instruments along Lines 9a and 9b.
grl27525-sup-0004-fs01.pdfPDF document225KFigure S1. Details of the OBS refraction experiment at Atlantis Massif.
grl27525-sup-0005-fs02.pdfPDF document230KFigure S2. Refracted arrivals recorded by ORB1 and OBH26 downward continued to the seafloor.
grl27525-sup-0006-fs03.pdfPDF document179KFigure S3. Example of tests for Line 8 models with sharp Moho.
grl27525-sup-0007-fs04.pdfPDF document150KFigure S4. Tomographic models for Lines 9a and 9b.
grl27525-sup-0008-fs05.pdfPDF document140KFigure S5. Effect of starting model on tomographic result.

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