Integrated Marine Information System (IMIS)

Data Policy
Persons | Institutes | Publications | Projects | Datasets
[ report an error in this record ]basket (0): add | show Print this page
Interlaboratory study for coral Sr/Ca and other element/Ca ratio measurements
Hathorne, E.C.; Gagnon, A.; Felis, T.; Adkins, J.; Asami, R.; Boer, W.; Caillon, N.; Case, D.; Cobb, K.M.; Douville, E.; deMenocal, P.; Eisenhauer, A.; Garbe-Schönberg, D.; Geibert, W.; Goldstein, S.; Hughen, K.; Inoue, M.; Hodaka, K.; Kölling, M.; Le Cornec, F.; Linsley, B.K.; McGregor, H.V.; Montagna, P.; Nurhati, I.S.; Quinn, T.R.; Raddatz, J.; Rebaubier, H.; Robinson, L.F.; Sadekov, A.; Sherrell, R.; Sinclair, D.; Tudhope, A.W.; Wei, G.; Wong, H.; Wu, H.C.; You, C.-F. (2013). Interlaboratory study for coral Sr/Ca and other element/Ca ratio measurements. Geochem. Geophys. Geosyst. 14(9). http://dx.doi.org/10.1002/ggge.20230
In: Geochemistry, Geophysics, Geosystems. American Geophysical Union: Washington, DC. ISSN 1525-2027; e-ISSN 1525-2027
Peer reviewed article  
Available in  Authors 
Author keywords
    coral Sr/Ca ratios
Authors  Top 
  • Hathorne, E.C.
  • Gagnon, A.
  • Felis, T.
  • Adkins, J.
  • Asami, R.
  • Boer, W.
  • Caillon, N.
  • Case, D.
  • Cobb, K.M.
  • Douville, E.
  • deMenocal, P.
  • Eisenhauer, A.
  • Garbe-Schönberg, D.
  • Geibert, W.
  • Goldstein, S.
  • Hughen, K.
  • Inoue, M.
  • Hodaka, K.
  • Kölling, M.
  • Le Cornec, F.
  • Linsley, B.K.
  • McGregor, H.V.
  • Montagna, P.
  • Nurhati, I.S.
  • Quinn, T.R.
  • Raddatz, J.
  • Rebaubier, H.
  • Robinson, L.F.
  • Sadekov, A.
  • Sherrell, R.
  • Sinclair, D.
  • Tudhope, A.W.
  • Wei, G.
  • Wong, H.
  • Wu, H.C.
  • You, C.-F.
Abstract
    The Sr/Ca ratio of coral aragonite is used to reconstruct past sea surface temperature (SST). Twenty-one laboratories took part in an interlaboratory study of coral Sr/Ca measurements. Results show interlaboratory bias can be significant, and in the extreme case could result in a range in SST estimates of 7°C. However, most of the data fall within a narrower range and the Porites coral reference material JCp-1 is now characterized well enough to have a certified Sr/Ca value of 8.838 mmol/mol with an expanded uncertainty of 0.089 mmol/mol following International Association of Geoanalysts (IAG) guidelines. This uncertainty, at the 95% confidence level, equates to 1.5°C for SST estimates using Porites, so is approaching fitness for purpose. The comparable median within laboratory error is <0.5°C. This difference in uncertainties illustrates the interlaboratory bias component that should be reduced through the use of reference materials like the JCp-1. There are many potential sources contributing to biases in comparative methods but traces of Sr in Ca standards and uncertainties in reference solution composition can account for half of the combined uncertainty. Consensus values that fulfil the requirements to be certified values were also obtained for Mg/Ca in JCp-1 and for Sr/Ca and Mg/Ca ratios in the JCt-1 giant clam reference material. Reference values with variable fitness for purpose have also been obtained for Li/Ca, B/Ca, Ba/Ca, and U/Ca in both reference materials. In future, studies reporting coral element/Ca data should also report the average value obtained for a reference material such as the JCp-1.
All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors 
[Back]

WoRMS

Using WoRMS

Tools

Connect with us

This service is powered by LifeWatch Belgium
Learn more»
Website and databases developed and hosted by Flanders Marine Institute · Page generated on 2024-11-22 07:36:03+01:00 · Privacy and cookie policy