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St. Petersburg Coastal and Marine Science Center

Data Release

Globigerinoides ruber Sediment Trap Data in the Gulf of Mexico

By Julie N. Richey,1 Kaustubh Thirumalai,2 Deborah Khider,3 Caitlin E. Reynolds,1 Jud Partin,4 and Terrence M. Quinn4

1U.S. Geological Survey, St. Petersburg, FL 33701, U.S.A.
2Brown University, 324 Brook Street, Providence, RI 02912, U.S.A.
3Department of Earth Science, University of Southern California, Los Angeles, CA 90089, U.S.A.
4Institute for Geophysics, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78758, U.S.A.

Summary

We present results here from a high-resolution (1–2 weeks) and long-running sediment trap time series from the northern Gulf of Mexico which allows for a detailed assessment of the seasonal distribution, size, morphological variability and geochemistry of co-occurring pink and white chromotypes of Globigerinoides ruber. The flux of both chromotypes is highly correlated, and both represent mean annual conditions in the surface mixed-layer. Under modern climatic conditions in the Gulf of Mexico, we find no significant offset in the Mg/Ca and δ18O of co-occurring pink and white G. ruber. Furthermore, we find the δ18O and δ13C among the two morphotypes (sensu stricto and sensu lato) of both pink and white G. ruber to be indistinguishable. The test size distribution within the population varies seasonally, with the abundance of large individuals increasing (decreasing) in summer (winter). Using paired Mg/Ca and δ18O we evaluate the performance of a suite of published equations for calculating sea surface temperature (SST), sea surface salinity (SSS) and isotopic composition of seawater (δ18Osw). In addition, we present new linear relationships between salinity and δ18Osw for the surface mixed-layer and the entire water column, based on 17 sampling trips to the Gulf of Mexico from 2008–2017.

For further information regarding data collection and/or processing methods as well as the associated published manuscript refer to Richey, J.N., Thirumalai, T., Khider, D., Reynolds, C.E., Partin, J.W., and Quinn, T.M., 2019, Considerations for Globigerinoides ruber (white and pink) paleoceanography comprehensive insights from a long-running sediment trap: Paleoceanography, doi: 10.1029/2018PA003417.

Data

File Name and Description Metadata (XML format) Metadata (text format) Download File
Carbonate_Chem.zip
TCO2, Temp, Salinity, TA (.csv)
G_ruber_metadata.xml G_ruber_metadata.txt Carbonate_Chem.zip
(17 KB)
CTD_data.zip
Depth, Temp, Salinity, Oxygen (.csv)
Same as above Same as above CTD_data.zip
(214 KB)
G_ruber_Flux.zip
G. ruber flux, count, percent (.csv)
Same as above Same as above G_ruber_Flux.zip
(19 KB)
G_ruber_Isotopes.zip
δ18O and δ13C (.csv)
Same as above Same as above G_ruber_Isotopes.zip
(18 KB)
G_ruber_MgCa.zip
Mg/Ca (.csv)
Same as above Same as above G_ruber_MgCa.zip
(17 KB)
Down_Core_G_ruber_geochem.zip
δ18O and δ13C (.csv)
Same as above Same as above Down_Core_G_ruber_geochem.zip
(17 KB)
Entire_Water_Column_d18O-salinity.zip
δ18O, Salinity (.csv)
Same as above Same as above Entire_Water_Column_d18O-salinity.zip
(18 KB)
Mixed_Layer_d18O-salinity.zip
δ18O, Salinity (.csv)
Same as above Same as above Mixed_Layer_d18Osw-salinity.zip
(17 KB)

Labeled graphic map showing sediment trap location, with inset of area.
Figure 1. Location of the sediment trap mooring in the Gulf of Mexico at approximately 27.5° N and 90.3° W (black triangle).

Suggested Citation

Richey, J.N., Thirumalai, T., Khider, D., Reynolds, C.E., Partin, J., and Quinn, T.M., 2019, Globigerinoides ruber Sediment Trap Data in the Gulf of Mexico: U.S. Geological Survey data release,  https://doi.org/10.5066/P9KK7UD6.



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