Figure 3
From: Coral geochemical response to uplift in the aftermath of the 2005 Nias–Simeulue earthquake
Coral Mn/Ca records before and after the March 2005 earthquake. Results are shown as 10-pt running means for the 2.5A and 1.8A uplift sites (a, b) and the M0.4A subsidence site (c) versus time. Yellow bar shows the earthquake; purple bar marks the December 2004 Indian Ocean tsunami. Profiles with significant pre- and post-earthquake differences in Mn/Ca are indicated by their non-overlapping means (horizontal lines) with shaded 95% confidence envelopes (1.96× standard error of the mean, see t-test results in Supplementary Table 1). Color-coded change points with posterior probability estimates83 confirm the reproducibility of a step-change earthquake signal at the 2.5A and 1.8A uplift sites. Change points occurring between 2004.5 and 2005.8 (inclusive of the tsunami and earthquake events) are filled, while those occurring outside of this range are grey. The reef-response interval following the earthquake at uplift sites is highlighted.
