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Global Change Master Directory (GCMD)
Aqaba Core 19, Jordan Isotope (delta 18O, delta 13C) Data for 1788 to 1992
Entry ID: G2111


Summary
Abstract: Site: Aqaba, Jordan, Marine Science Station Reef, cores C18 and C19 (29 deg 26'
N, 34 deg 58' E) Water Depth 1m. collected 11/01/92 (upper 0-120cm), 11/01/93
(120-320cm) Coral species: Porites sp. In fall 1992 and spring 1993 we drilled
an unusual big colony of Porites sp. at the fore-reef at Aqaba. The colony is
situated in front of the reef edge of the fringing reef south of the Marine
Science Station. The colony grows from a depth of ca 4.5 m, reaches a height
of 3.5 m and a maximum diameter of approximately 5.5 m. We drilled with a hand
held pneumatic drill powered by compressed air from a Scuba tank. We used a
conventional 30cm diamond-tipped drill bit and in order to obtain longer cores
we constructed extensions of 100cm each (3 in total). The extensions are made
from a 17mm diameter steel rod with a screw thread attached either to the core
barrel or another extension. Up to 320 cm long cores in 30cm lengths with
100% recovery were obtained. The core holes were filled with cement plugs after
drilling to prevent bioerosion (see Hudson 1981; Winter et al. 1991) . The
cores were drilled parallel to the growth axis (perpendicular to the coral
surface). Five cores were extracted from the "big" Porites sp. at different
sides of the colony. Three cores (19, 20, 21) are of 130 cm length, core 24
(lying SE-side of the colony at an angle of 45A?) reached 229 cm length, and
core 18 (top of the colony) recovered coral skeleton to a total length of 312
cm. For oxygen and carbon isotope analysis core 18 (top of colony) and core 19
(horizontal core from the southern side) were selected. Samples for isotopic
analyses were treated with 35% hydrogen peroxide for 24 hours to remove
oxidizable organic material. In addition they were rinsed several times in
demineralized water and dried in a stove at 40A?C. Small samples to determine
the average isotope composition of each year were cut with a hand held saw.
They were taken along the edge of the coral slabs. The top of LD-bands was
chosen as the end (respectively beginn ing) of an annual band. In all our
samples this boundary is sharp and can be determined relatively precisely. Each
chip was gently powdered in an agate mortar. The samples were reacted with
100% H3PO4 at 75A?C in an online, automated carbonate reaction device (Kiel
Device) connected to a Finnigan Mat 252 mass spectrometer. Isotopic ratios
were corrected for 17-O contribution (Craig 1957) and are reported in permil
relative to PDB. Average precision based on duplicate sample analysis and on
multiple analysis of NBS 19 is A?0.04 permil for d13C and A?0.08 permil for
d18O. On-line data are available free of charge, other forms are available for
the cost of reproduction.

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Geographic Coverage
 N: 29.43 S: 29.43  E: 34.97  W: 34.97

Data Set Citation
Dataset Creator: Georg A. Heiss
Dataset Title: Aqaba Core 19, Jordan Isotope (delta 18O, delta 13C) Data for 1788 to 1992
Dataset Series Name: World Data Center for Paleoclimatology Data Contribution Series
Dataset Release Date: 1995/08
Dataset Release Place: Boulder
Dataset Publisher: World Data Center for Paleoclimatology, Boulder


Temporal Coverage
Start Date: 1788-01-01
Stop Date: 1992-12-31


Location Keywords
OCEAN > INDIAN OCEAN > RED SEA
OCEAN > INDIAN OCEAN
CONTINENT > ASIA > WESTERN ASIA > MIDDLE EAST > JORDAN > AQABA


Science Keywords
PALEOCLIMATE >OCEAN/LAKE RECORDS >CORAL DEPOSITS >DELTA 180    [Definition]
PALEOCLIMATE >OCEAN/LAKE RECORDS >CORAL DEPOSITS >DELTA 13C    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
OCEANS


Project
ESIP >Earth Science Information Partners Program    [Information]


Quality
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.


Access Constraints
None


Use Constraints
Please cite original reference when using this data.


Keywords
GOSIC
G3OS/
Numeric Data Sets > Paleoclimatology
Indian Ocean > Red Sea > Aqaba > Aqaba (29N035E0001)
Jordan > Aqaba > Aqaba (29N035E0001)


Data Set Progress
COMPLETE


Originating Center
NOAA/NGDC


Data Center
World Data Center for Paleoclimatology, Boulder    [Information]
Data Center URL: http://www.ncdc.noaa.gov/paleo/

Data Center Personnel
Name: WDC/PALEOCLIMATOLOGY, BOULDER
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA



Distribution
Fees: On-line data are available free of charge.


Personnel
WDC/PALEOCLIMATOLOGY, BOULDER
Role: TECHNICAL CONTACT
Phone: +1 (303) 497-6160
Fax: +1 (303) 497-6513
Email: paleo at noaa.gov
Contact Address:
World Data Center for Paleoclimatology
NOAA/NCDC Code E/GCx3
325 Broadway
City: Boulder
Province or State: CO
Postal Code: 80303
Country: USA


Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2004-09-16
Last DIF Revision Date: 2018-05-29



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