# Caribbean Sclerosponge Oxygen Isotope and Sr/Ca Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/1878 # # Original_Source_URL: http://www1.ncdc.noaa.gov/pub/data/paleo/coral/caribbean/montego_bay_2003.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Corals and Sclerosponges #-------------------- # Contribution_Date # Date: 2003-10-01 #-------------------- # Title # Study_Name: Montego Bay, Pedro Bank - Sclerosponge Oxygen Isotope and Sr/Ca Data #-------------------- # Investigators # Investigators: Haase-Schramm, A.; Böhm, F.; Eisenhauer, A.; Dullo, W.C.; Joachimski, M.M.; Hansen, B.; Reitner, J. #-------------------- # Description_and_Notes # Description: Sr/Ca and oxygen isotope values (VPDB) were measured on aragonitic skeletons of sclerosponges Ceratoporella nicholsoni. Sr/Ca values were measured with ICP-AES with external reproducibility of 0.6% (2sem). External precision for d18O is 0.07 permil (2sd). Age model is based on U/Th dating with average error of 3%. sample Pb19: Pedro Bank, 17�32�N, 78�57�W ; 125 mbsl #-------------------- # Publication # Authors: Haase-Schramm, A.; Böhm, F.; Eisenhauer, A.; Dullo, W.C.; Joachimski, M.M.; Hansen, B.; Reitner, J. # Published_Date_or_Year: 2003 # Published_Title: Sr/Ca ratios and oxygen isotopes from sclerosponges: Temperature history of the Caribbean mixed layer and thermocline during the Little Ice Age # Journal_Name: Paleoceanography # Volume: 18 # Edition: 3 # Issue: # Pages: 1073 # DOI: 10.1029/2002PA000830 # Online_Resource: # Full_Citation: Haase-Schramm, A., F. B�hm, A. Eisenhauer, W.-C. Dullo, M.M. Joachimski, B. Hansen, and J. Reitner, 2003, Sr/Ca ratios and oxygen isotopes from sclerosponges: Temperature history of the Caribbean mixed layer and thermocline during the Little Ice Age, Paleoceanography, Vol. 18, No. 3, 1073, doi:10.1029/2002PA000830. # Abstract: We investigate aragonitic skeletons of the Caribbean sclerosponge Ceratoporella nicholsoni from Jamaica, 20 m below sea level (mbsl), and Pedro Bank, 125 mbsl. We use d18O and Sr/Ca ratios as temperature proxies to reconstruct the Caribbean mixed layer and thermocline temperature history since 1400 A.D. with a decadal time resolution. Our age models are based on U/Th dating and locating of the radiocarbon bomb spike. The modern temperature difference between the two sites is used to tentatively calibrate the C. nicholsoni Sr/Ca thermometer. The resulting calibration points to a temperature sensitivity of Sr/Ca in C. nicholsoni aragonite of about -0.1 mmol/mol/K. Our Sr/Ca records reveal a pronounced warming from the early 19th to the late 20th century, both at 20 and 125 mbsl. Two temperature minima in the shallow water record during the late 17th and early 19th century correspond to the Maunder and Dalton sunspot minima, respectively. Another major cooling occurred in the late 16th century and is not correlatable with a sunspot minimum. The temperature contrast between the two sites decreased from the 14th century to a minimum in the late 17th century and subsequently increased to modern values in the early 19th century. This is interpreted as a long-term deepening and subsequent shoaling of the Caribbean thermocline. The major trends of the Sr/Ca records are reproduced in both specimens but hardly reflected in the d18O records. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Site_Information # Site_Name: Montego Bay, Jamaica # Location: Ocean>Atlantic Ocean>North Atlantic Ocean>Caribbean Sea>Jamaica # Country: Jamaica # Northernmost_Latitude: 18.47 # Southernmost_Latitude: 18.47 # Easternmost_Longitude: -77.95 # Westernmost_Longitude: -77.95 # Elevation: -20 m #------------------ # Data_Collection # Collection_Name: 03jama02b # Earliest_Year: 1356 # Most_Recent_Year: 1991 # Time_Unit: AD # Core_Length: # Notes: Core name- Sclerosponge Ce96 #------------------ # Species # Species_Name: Ceratoporella nicholsoni # Common_Name: #------------------ # Chronology_Information # Chronology: Age model is based on U/Th dating with average error of 3%. Our age models are based on U/Th dating and locating of the radiocarbon bomb spike. # #---------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age, , ,years AD, , , , ,N ##Sr/Ca Strontium/Calcium,Ceratoporella nicholsoni, ,mmol/mol, ,corals and sclerosponges, , ,N ##err Strontium/Calcium,Ceratoporella nicholsoni, ,2 sigma error,mmol/mol,corals and sclerosponges, , ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: NAN # age Sr/Ca err 1991 9.525 0.068 1986 9.494 0.072 1982 9.520 0.053 1975 9.540 0.034 1971 9.518 0.051 1971 9.431 0.044 1967 9.518 0.042 1967 9.500 0.039 1962 9.483 0.028 1960 9.584 0.079 1957 9.536 0.056 1954 9.267 0.030 1947 9.468 0.059 1940 9.618 0.017 1932 9.435 0.053 1926 9.696 0.063 1921 9.604 0.030 1915 9.603 0.006 1909 9.728 0.068 1904 9.774 0.054 1899 9.658 0.020 1893 9.665 0.054 1888 9.755 0.041 1883 9.541 0.054 1878 9.668 0.071 1873 9.702 0.030 1869 9.712 0.051 1864 9.640 0.034 1860 9.729 0.044 1855 9.630 0.041 1850 9.810 0.076 1845 9.727 0.057 1840 9.849 0.057 1834 9.761 0.021 1830 9.820 0.082 1821 9.685 0.078 1817 9.902 0.039 1813 9.874 0.065 1808 9.887 0.067 1805 9.878 0.082 1800 9.827 0.081 1795 9.797 0.233 1784 9.706 0.030 1784 9.840 0.048 1780 9.620 0.102 1780 9.787 0.046 1765 9.702 0.097 1756 9.763 0.172 1754 9.751 0.059 1747 9.564 0.047 1744 9.735 0.148 1739 9.779 0.075 1739 9.662 0.034 1735 9.811 0.170 1730 9.650 0.093 1726 9.806 0.117 1722 9.769 0.027 1718 9.704 0.077 1714 9.704 0.026 1709 9.827 0.118 1705 9.767 0.201 1701 9.832 0.178 1698 9.798 0.026 1694 9.826 0.128 1694 9.789 0.039 1690 9.980 0.072 1690 9.820 0.046 1690 9.759 0.026 1686 9.792 0.110 1686 9.758 0.076 1682 9.836 0.050 1682 9.687 0.075 1677 9.861 0.133 1677 9.732 0.054 1674 9.902 0.064 1674 9.750 0.016 1671 9.792 0.024 1671 9.704 0.074 1667 9.529 0.040 1667 9.608 0.092 1663 9.750 0.068 1663 9.769 0.017 1660 9.773 0.070 1660 9.681 0.082 1656 9.845 0.049 1656 9.735 0.062 1654 9.656 0.057 1650 9.824 0.117 1650 9.770 0.065 1646 9.778 0.074 1643 9.782 0.027 1642 9.758 0.009 1642 9.756 0.073 1639 9.780 0.051 1639 9.739 0.055 1639 9.757 0.056 1636 9.731 0.025 1636 9.682 0.040 1636 9.677 0.055 1634 9.797 0.066 1634 9.670 0.071 1633 9.672 0.078 1631 9.731 0.040 1631 9.722 0.044 1630 9.701 0.038 1627 9.807 0.039 1627 9.722 0.055 1627 9.724 0.079 1624 9.792 0.018 1624 9.741 0.051 1624 9.737 0.041 1622 9.624 0.060 1622 9.539 0.095 1621 9.753 0.021 1618 9.851 0.055 1618 9.724 0.054 1618 9.668 0.063 1616 9.828 0.116 1616 9.798 0.030 1616 9.557 0.075 1614 9.756 0.021 1610 9.805 0.053 1605 9.751 0.028 1603 9.787 0.024 1600 9.762 0.044 1597 9.742 0.046 1594 9.703 0.025 1591 9.666 0.012 1589 9.770 0.051 1585 9.738 0.010 1582 9.730 0.060 1580 9.740 0.022 1577 9.787 0.085 1575 9.761 0.017 1572 9.789 0.012 1570 9.784 0.055 1567 9.698 0.012 1565 9.740 0.036 1562 9.646 0.058 1559 9.624 0.041 1555 9.592 0.039 1551 9.650 0.028 1547 9.611 0.025 1545 9.701 0.048 1542 9.680 0.067 1539 9.683 0.050 1537 9.602 0.035 1535 9.667 0.095 1532 9.595 0.037 1529 9.691 0.034 1527 9.594 0.035 1524 9.626 0.014 1520 9.683 0.035 1517 9.642 0.084 1514 9.646 0.050 1510 9.758 0.003 1508 9.669 0.045 1508 9.664 0.036 1503 9.589 0.054 1500 9.658 0.046 1496 9.698 0.046 1493 9.650 0.064 1491 9.642 0.045 1490 9.785 0.016 1486 9.597 0.034 1483 9.569 0.048 1480 9.568 0.059 1477 9.669 0.023 1475 9.638 0.042 1472 9.577 0.021 1469 9.672 0.036 1466 9.606 0.031 1460 9.642 0.051 1457 9.625 0.046 1454 9.688 0.033 1451 9.699 0.026 1447 9.687 0.041 1445 9.684 0.076 1441 9.699 0.036 1438 9.670 0.051 1436 9.673 0.059 1433 9.625 0.078 1430 9.754 0.038 1427 9.638 0.032 1425 9.599 0.118 1421 9.701 0.040 1418 9.765 0.120 1416 9.698 0.089 1412 9.720 0.246 1409 9.741 0.042 1405 9.728 0.067 1402 9.682 0.043 1399 9.621 0.022 1395 9.673 0.021 1393 9.723 0.050 1390 9.556 0.089 1386 9.686 0.048 1383 9.683 0.088 1380 9.681 0.025 1377 9.615 0.034 1372 9.675 0.074 1369 9.672 0.046 1365 9.639 0.032 1361 9.661 0.029 1356 9.744 0.016