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. Quinn 4
1 U.S. Geological Survey, St. Petersburg, FL 33701, U.S.A.
2 Brown University, 324 Brook Street, Providence, RI 02912, U.S.A.
3 Department of Earth Science, University of Southern California, Los Angeles, CA 90089, U.S.A.
4 Institute 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, v. 34, no. 3, p. 353–373, https://doi.org/10.1029/2018PA003417.
Note: This data release was versioned on September 11, 2023. Please see the Suggested Citation section for details.
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 | Data withdrawn* (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) |
*Sediment trap foraminifera flux were incorrectly calculated per 0.5 m2 area instead of 1 m2 in this version of the dataset. Corrected data has been provided in a new data release, https://doi.org/10.5066/P9O76R8R.
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 (ver. 2.0 September 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P9KK7UD6.
First posted February 11, 2019
Revised September 11, 2023