Ross Sea

Eight short-wavelength, seismically defined penetrative structures having associated 1- to 5-km-wide magnetic anomalies (Table A. 12.1) in the western Ross Sea (Figure A. 12.1) are interpreted as volcanic in origin. Modeled anomalies fitted to the observed data and constrained by 24-fold seismic reflection profiles support the interpretation of these submarine volcanoes.

Anomaly a (Figure A. 12.1) is interpreted as a submarine caldera with an associated volcanic dome and is underlain by magma or rock above the Curie temperature [Behrendt et al, 1987].