Houtman Abrolhos Isotope (delta 18O, delta 13C) Data for 1795 to 1994

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What does this data set describe?

Title:
Houtman Abrolhos Isotope (delta 18O, delta 13C) Data for 1795 to 1994
Abstract:
DESCRIPTION: VARIABLES AND UNITS: Column #1: core depth in mm Column #2: delta C-13 vs V-PDB Column #3: delta O-18 vs V-PDB Column #4: assigned date in years A.D. Column #5: same as #4, but interpolated to bimonthly data Columns #6 and #7: same as #2 and #3, but interpolated to bimonthly values. All isotope data are reported in per mil versus the Vienna Pee Dee Belemnite standard (V-PDB). PRECISION: Internal precisions (1 SD) are 0.02 per mil for delta O-18, and 0.015 per mil for delta C-13. External precisions (1 SD) of an internal laboratory standard (Solnhofen limestone) are 0.07 per mil for delta O-18, and 0.05 per mil for delta C-13. SAMPLING RESOLUTION: The coral core was originally sampled in half-yearly resolution. For the published chronology additional samples were taken (2-3 new samples between two "old" samples). Average sampling density is 7.7 samples per year. The bimonthly data were interpolated with an Excel-macro. AGE MODEL: The following is cited from Kuhnert et al. (1999): "A first rough age assignment was based on the density banding pattern evident in x-radiographs over most portions of the coral core. Each couplet of one low- and one high-density band represents the growth of one year. The higher-resolving age model is based on the assumption, that coral d18O primarily depends on temperature. In the d18O data deriving from an annual banding couplet the highest value was assigned to the mid of September, the coldest month on average. The chronology is thus tied to one point within each year; the ages of the other sampling points were linearly interpolated according to their spatial distances along the sampling profile. In skeletal portions with unclear density banding pattern the stratigraphy is solely based on cyclic variations in coral d18O. Each cycle was assumed to represent an annual cycle, as long as it occurred over a skeletal portion extending between 10 and 20 mm. Assignments of sub-annual dates were performed as described above. Errors are estimated to be ó1 year per 100 years (due to unclear banding and d18O cycles near 1853 and 1869, respectively)."
  1. How should this data set be cited?

    Kuhnert, Henning, Paetzold, Juergen, Wefer, Gerold, Hatcher, Bruce, Wyrwoll, Karl-Heinz, Eisenhauer, Anton, Collins, Lindsay, and Zhu, Zhong Rong , 199907, Houtman Abrolhos Isotope (delta 18O, delta 13C) Data for 1795 to 1994: World Data Center for Paleoclimatology Data Contribution Series 1999-037, World Data Center for Paleoclimatology, Boulder, Boulder.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 113.77
    East_Bounding_Coordinate: 113.77
    North_Bounding_Coordinate: -28.46
    South_Bounding_Coordinate: -28.46

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date:
    Ending_Date: 1994
    Currentness_Reference: Publication Date

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

    2. What coordinate system is used to represent geographic features?

  7. How does the data set describe geographic features?

    coral variable
    coral variable (Source: coral variable)

    del13C
    delta 13C (per mil) (Source: Craig, H., 1957. Isotopic standards for mass spectrometric analysis of carbon dioxide. Geochimica Cosmochimica Acta, 12:113-140; Fairbanks, R.G., and R.E. Dodge, Annual periodicity of the O-18/O-16 and C-13/C-12 ratios in the coral Montastrea annularis, Geochimica et Cosmochimica Acta, 43, 1979.)

    Range of values
    Minimum:unknown
    Maximum:unknown
    Units:per mil
    Resolution:0.01

    del18O
    delta 18O (per mil) relative to PDB (Source: Craig, H., 1957. Isotopic standards for mass spectrometric analysis of carbon dioxide. Geochimica Cosmochimica Acta, 12:113-140)

    Range of values
    Minimum:unknown
    Maximum:unknown
    Units:per mil
    Resolution:0.01


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Kuhnert H, Pótzold J, Hatcher B, Wyrwoll K-H, Eisenhauer A, Collins LB, Zhu ZR, Wefer G (1999): A 200-year coral stable oxygen isotope record from a high-latitude reef off Western Australia. Coral Reefs, 18: 1-12

  3. To whom should users address questions about the data?


Why was the data set created?

Paleoclimatic Research


How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints: Please cite original reference when using this data.

  1. Who distributes the data set? (Distributor 1 of 1)

    NOAA Paleoclimatology Program
    Data Manager
    325 Broadway, Code E/CC23
    Boulder, Colorado 80305-3328
    U.S.A.

    (303) 497-6280 (voice)
    (303) 497-6513 (FAX)
    paleo@noaa.gov

    Hours_of_Service: 9-5 MST Monday-Friday
  2. What's the catalog number I need to order this data set?

    Other Documents

  3. What legal disclaimers am I supposed to read?

    Disclaimer- While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 01-Apr-2011
Metadata author:
NOAA Paleoclimatology Program
Data Manager
325 Broadway, Code E/CC23
Boulder, Colorado 80305-3328
U.S.A.

(303) 497-6280 (voice)
(303) 497-6513 (FAX)
paleo@noaa.gov

Hours_of_Service: 9-5 MST Monday-Friday
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)


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