Figure 2
From: Past summer upwelling events in the Gulf of Oman derived from a coral geochemical record
(a) Cross-plot of in situ low-SST periods and AN-δ13C minima. The dotted line indicates the regression between in situ low-SST periods and AN-δ13C minima (filled circles) and estimated δ13Canomaly value for no upwelling periods (r = −0.937, P < 0.05, n = 6). The δ13Canomaly value for no upwelling (open circle) was estimated from in situ δ13CDIC-SW from the Arabian Sea36 and the value of δ13C in isotopic equilibrium between coral carbonate and seawater37 (b) Estimated upwelling periods from AN-δ13C minima. Black bars indicate the years which were used for the regression between in situ low-SST periods and δ13Canomaly minima.
