Knebel, Oliver; Felis, Thomas; Kölling, Martin; Kench, Paul; Eisenhauer, Anton; Diers, Diana; Dolman, Andrew M; Ryan, Emma; Gischler, Eberhard: Early LIA coral from Arno Atoll (Marshall Islands) Sr/Ca, Mg/Ca, δ18O, δ13C, and skeletal density bimonthly interpolated data [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.984414 (dataset in review)
Abstract:
This dataset includes geochemical and densitometric data from an early Little Ice Age (LIA; 1273–1332±4 CE) Porites microatoll slab collected in November 2017 from Arno Atoll, Marshall Islands. 230Th-U-dating was performed at GEOMAR, Kiel, Germany. Powder samples were extracted along the growth axes of the coral at 1 mm resolution (9.5 samples per annual band). Trace elements were measured using an Agilent 720 (axial) inductively coupled plasma optical emission spectrometer at MARUM, University of Bremen, Germany. Mean Sr/Ca of JCp-1 standards measured along with this coral was 8.914±0.012 mmol mol-1 (n = 11; 1 sd). Stable isotopes were measured using a Finnigan MAT 252 mass spectrometer equipped with an automated Kiel III carbonate preparation device at the Stable Isotope Laboratory of MARUM, Bremen, Germany. Skeletal density was measured using a γ-densitometer at the Goethe University, Frankfurt am Main, Germany. The age chronology is based on coral Sr/Ca using one tie point each annual cycle for the summer SST peak (minimum in Sr/Ca) in September/October. Subsequently, the time series of geochemical and skeletal density data were linearly interpolated to an evenly spaced time series with bimonthly resolution (6 samples year-1).
Related to:
Knebel, Oliver; Felis, Thomas; Kölling, Martin; Kench, Paul; Eisenhauer, Anton; Diers, Diana; Dolman, Andrew M; Ryan, Emma; Gischler, Eberhard (submitted): Western Pacific corals reveal Common Era changes in ENSO-diversity, volcanic forcing, and thermal stress. Communications Earth & Environment
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 441832482: SPP 2299: Tropical Climate Variability and Coral Reefs. A Past to Future Perspective on Current Rates of Change at Ultra-High Resolution
German Research Foundation (DFG), grant/award no. 468501802: Common Era ENSO variability in the West Central Pacific inferred from isotopic and trace element analysis of Porites microatolls
Coverage:
Latitude: 7.258083 * Longitude: 171.654472
Date/Time Start: 2017-11-08T00:00:00 * Date/Time End: 2017-11-08T00:00:00
Minimum Elevation: 0.0 m * Maximum Elevation: 0.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Internal coral chronology | Int chron | a | Knebel, Oliver | ||
| 2 | AGE | Age | ka BP | Knebel, Oliver | Age, calculated from a AD | Geocode – 0=1950 |
| 3 | Age | Age | a AD/CE | Knebel, Oliver | ||
| 4 | Porites sp., Strontium/Calcium ratio | Porites sp. Sr/Ca | mmol/mol | Knebel, Oliver | ICP-OES (Agilent 720) | |
| 5 | Porites sp., Magnesium/Calcium ratio | Porites sp. Mg/Ca | mmol/mol | Knebel, Oliver | ICP-OES (Agilent 720) | |
| 6 | Porites sp., δ18O | Porites sp. δ18O | ‰ PDB | Knebel, Oliver | Mass spectrometer, Thermo Finnigan MAT 252 with Kiel III automated carbonate preparation device | vs. VPDB |
| 7 | Porites sp., δ13C | Porites sp. δ13C | ‰ PDB | Knebel, Oliver | Mass spectrometer, Thermo Finnigan MAT 252 with Kiel III automated carbonate preparation device | vs. VPDB |
| 8 | Density, skeletal bulk | Density skel b | g/cm3 | Knebel, Oliver | Gamma-ray attenuation (GRA) densitometer |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2432 data points
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