Incorporation of strontium into reef coral skeletal carbonate

Weber, Jon N.

doi:10.1016/0016-7037(73)90015-x

Cited by 215 publications

(152 citation statements)

References 28 publications

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“…[21] SST variations have been shown to drive variations in carbonate Sr/Ca in coral skeletons [Weber, 1973;Smith et al, 1979;Beck et al, 1992]. The monthly coral Sr/Ca variations for this study are significantly correlated with monthly IRD SST and HadISST_AI for the period common to all records (r !…”

Section: Coral Geochemistry and Sstmentioning

confidence: 64%

Reconstructing twentieth‐century sea surface temperature variability in the southwest Pacific: A replication study using multiple coral Sr/Ca records from New Caledonia

2007

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[1] Coral-based climate reconstructions typically have not used multiple cores from a region to capture and replicate a climate signal largely because of concerns of coral conservation, analytical expense, and time constraints. Coral Sr/Ca reproducibility through the twentieth century was investigated using three intracolony and three intercolony coral records from the reefs offshore of Amédée Island, New Caledonia. Different sampling resolutions were examined in coral Sr/Ca (fortnightly and monthly) and d 18 O (fortnightly, monthly, and seasonally) as well as similar scale subsampling of the daily in situ sea surface temperature (SST) record. The mean coral Sr/Ca, d 18 O, and SST values do not change as a function of sampling resolution. The coral Sr/Ca signal is highly reproducible; the average absolute offset between coeval monthly Sr/Ca determinations between any two coral time series is 0.035 ± 0.026 mmol/mol (1s) ($0.65°C), which is less than twice the analytical precision of the coral Sr/Ca measurements. The stack average of the monthly coral Sr/Ca variations and monthly anomalies are significantly correlated with monthly in situ SST (1967SST ( -1992; r = À0.96 and À0.64, respectively; p < 0.05; and n = 302) and 1°grid monthly SST data product ; r = À0.95 and À0.56, respectively; p < 0.05; and n = 1198). The coral Sr/Ca-SST reconstruction exhibits interannual and decadal-timescale fluctuations that exceed those observed in the gridded SST record, which may reflect true differences between SST at a shallow reef site and those averaged over a 1°grid box or inadequacies in the methodology used to create the gridded SST product when few observations are available. A warming trend of $0.6°C is observed in the twentieth century coral Sr/Ca-SST record.

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Section: Coral Geochemistry and Sstmentioning

confidence: 64%

Reconstructing twentieth‐century sea surface temperature variability in the southwest Pacific: A replication study using multiple coral Sr/Ca records from New Caledonia

2007

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“…3), their absolute values, and the amplitude of their variability, show differences that may be controlled by physiological factors such as growth rate. Many high-resolution studies have demonstrated that growth rate has a significant effect on elemental and isotopic ratios in the same colony, and even in the same corallite, for almost all kinds of scleractinian corals (e.g., Weber 1973;McConnaughey 1989;de Villiers et al 1994de Villiers et al , 1995Watanabe et al 2002;Mitsuguchi et al 2003;Goodkin et al 2005). Furthermore, the growth rate of Porites sp.…”

Section: Possible Impacts On the Offset Of Intercoral Geochemical Recmentioning

confidence: 99%

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

et al. 2014

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Sampling of annually banded massive coral skeletons at annual (or higher) resolutions is increasingly being used to obtain replicate long-term time series of changing seawater conditions. However, few of these studies have compared and calibrated the lower annual resolution records based on coral geochemical tracers with the corresponding instrumental climate records, although some studies have inferred the climatic significance of annual coral series derived from averages of monthly or sub-annual records. Here, we present annual resolution analysis of coral records of elemental and stable isotopic composition that are approximately 70 years long. These records were preserved in two coexisting colonies of Porites sp. from Arlington Reef, on the Great Barrier Reef in Australia, and are used to evaluate the climatic significance of annually resolved coral geochemical proxies. The geochemical records of coral sample ''10AR2,'' with its faster and relatively constant annual growth rate, appear to have been independent of skeletal growth rate and other vital effects. The annual resolution of Sr/Ca and Dd 18 O time series was shown to be a good proxy for annual sea surface temperature (SST; r = -0.67, n = 73, p \ 0.0000001) and rainfall records (r = -0.34, n = 67, p \ 0.01). However, a slower growing coral sample, ''10AR1'' showed significantly lower correlations (r = -0.20, n = 71, p = 0.05 for Sr/Ca and SST; r = -0.19, n = 67, p = 0.06 for Dd 18 O and rainfall), indicating its greater susceptibility to biological/metabolic effects. Our results suggest that while annually resolved coral records are potentially a valuable tool for determining, in particular, long timescale climate variability such as Pacific Decadal Oscillation, Interdecadal Pacific Oscillation, and other climatic factors, the selection of the coral sample is important, and replication is essential.

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“…Annual coral bands were pulverized and dissolved in 8 N HNO, acid. The 1973, 1974 samples and all of the Bermuda samples were dissolved in 4 N HCl to remove the CO2 first for i4C analyses (DRUFFEL, 1989). The Sr extraction and purification chemistry procedures used were reported by BOWEN (1970) andLIVINGSTON et al (1974).…”

Section: Collection Of Corals and %R And =-'% Analysismentioning

confidence: 99%

“…For example, very low salinity water (24k) observed all along the edge of the Florida Current off the Florida Keys coincided with the August 1973 maximum intrusion event (MAUL, 1977). Figure 5a represents the Loop Current position time series for 1973taken from STURGES and EVANS (1983. When the maximum intrusion occurred in these years, the Florida coral 90Sr activities coincide with seasonally high values (Fig.…”

Section: Oceanographic Considerationsmentioning

confidence: 99%

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Anomalous levels of 90Sr and 239,240Pu in Florida corals: Evidence of coastal processes

Purdy

Druffel

Hugh

1989

Geochimica et Cosmochimica Acta

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Incorporation of strontium into reef coral skeletal carbonate

Cited by 215 publications

References 28 publications

Reconstructing twentieth‐century sea surface temperature variability in the southwest Pacific: A replication study using multiple coral Sr/Ca records from New Caledonia

Reconstructing twentieth‐century sea surface temperature variability in the southwest Pacific: A replication study using multiple coral Sr/Ca records from New Caledonia

Evaluation of annual resolution coral geochemical records as climate proxies in the Great Barrier Reef of Australia

Anomalous levels of 90Sr and 239,240Pu in Florida corals: Evidence of coastal processes

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