Ransby, Daniela; Fischer, Helmut W; Herut, Barak; Almogi-Labin, Ahuva (2023): Radionuclides and chronology of short sediment cores BY and ASH from the Israel inner Mediterranean shelf [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.956901
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Published: 2023-03-24 • DOI registered: 2023-09-29
Abstract:
Depth sections of two short sediment cores were analyzed in the Radioactivity measurements Laboratory at the University of Bremen by gamma spectrometry to determine the activities of natural and artificial gamma emitting radionuclides. The core chronology was based on a combination of two radiotracers, 210Pb and 137Cs, due to their suitable half-lives 22.2 and 30 years. A robust time-frame will enable to track the rapid changes in the sedimentation pattern of the Nile River along a S-N gradient observed in the cores GC and BC as a part of the project Rapid changes along the Israeli Mediterranean coast following the damming of the Nile and their influence on the Israeli inner shelf. In order to understand causes of recent sharp changes in sedimentation pattern on the inner Israeli shelf, dating of cores collected in the region is important.
Supplement to:
Herut, Barak; Guy-Haim, Tamar; Almogi-Labin, Ahuva; Fischer, Helmut W; Ransby, Daniela; Sandler, Amir; Katz, Timor; Avnaim-Katav, Simona (2023): Marine oligotrophication due to fine sediments and nutrient starvation caused by anthropogenic sediment and water retention in large rivers: the Nile damming case. Frontiers in Marine Science, 10, 1226379, https://doi.org/10.3389/fmars.2023.1226379
Coverage:
Median Latitude: 32.040835 * Median Longitude: 34.659335 * South-bound Latitude: 31.707000 * West-bound Longitude: 34.514000 * North-bound Latitude: 32.374670 * East-bound Longitude: 34.804670
Date/Time Start: 2007-05-01T00:00:00 * Date/Time End: 2007-05-01T00:00:00
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.185 m
Event(s):
SHI-2007-ASH (GC) * Latitude: 31.707000 * Longitude: 34.514000 * Date/Time: 2007-05-01T00:00:00 * Elevation: -33.0 m * Recovery: 27 cm * Location: Ashqelon * Campaign: SHI-2007 * Basis: Shikmona * Method/Device: Sediment corer (SEDCO)
SHI-2007-BY (BC) * Latitude: 32.374670 * Longitude: 34.804670 * Date/Time: 2007-05-01T00:00:00 * Elevation: -40.0 m * Recovery: 22 cm * Location: Bet Yanai * Campaign: SHI-2007 * Basis: Shikmona * Method/Device: Sediment corer (SEDCO)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Ransby, Daniela | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Ransby, Daniela | Geocode | |
| 3 | Depth, uncertainty | Depth unc | ± | Ransby, Daniela | ||
| 4 | Size fraction < 0.063 mm, mud, silt+clay | <63 µm | % | Herut, Barak | ||
| 5 | Caesium-137 | 137Cs | Bq/kg | Ransby, Daniela | High resolution, low background gamma spectroscopy (HPGe detector, Canberra Inc.) | "<" values are below decision threshold of the individual analysis |
| 6 | Caesium-137, uncertainty | 137Cs unc | ± | Ransby, Daniela | High resolution, low background gamma spectroscopy (HPGe detector, Canberra Inc.) | |
| 7 | Lead-210 | 210Pb | Bq/kg | Ransby, Daniela | High resolution, low background gamma spectroscopy (HPGe detector, Canberra Inc.) | total 210Pb |
| 8 | Lead-210, uncertainty | 210Pb unc | ± | Ransby, Daniela | High resolution, low background gamma spectroscopy (HPGe detector, Canberra Inc.) | total 210Pb |
| 9 | Lead-214 | 214Pb | Bq/kg | Ransby, Daniela | High resolution, low background gamma spectroscopy (HPGe detector, Canberra Inc.) | supported 210Pb |
| 10 | Lead-214, uncertainty | 214Pb unc | ± | Ransby, Daniela | High resolution, low background gamma spectroscopy (HPGe detector, Canberra Inc.) | supported 210Pb |
| 11 | Lead-210 excess | 210Pb xs | Bq/kg | Ransby, Daniela | Calculated | |
| 12 | Lead-210 excess, uncertainty | 210Pb xs unc | ± | Ransby, Daniela | Calculated | |
| 13 | Lead-210 excess | 210Pb xs | Bq/kg | Ransby, Daniela | Corrected | normalized by fine fraction |
| 14 | Lead-210 excess, uncertainty | 210Pb xs unc | ± | Ransby, Daniela | Corrected | normalized by fine fraction |
| 15 | Age, relative, number of years | Age | a | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | |
| 16 | Age, dated | Age dated | ka BP | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | |
| 17 | Age | Age | a AD/CE | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | |
| 18 | Age, maximum/old | Age max | a AD/CE | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | |
| 19 | Age, minimum/young | Age min | a AD/CE | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | |
| 20 | Age, relative, number of years | Age | a | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | corrected; using 210Pb data normalized by fine fraction |
| 21 | Age, dated | Age dated | ka BP | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | corrected; using 210Pb data normalized by fine fraction |
| 22 | Age | Age | a AD/CE | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | corrected; using 210Pb data normalized by fine fraction |
| 23 | Age, maximum/old | Age max | a AD/CE | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | corrected; using 210Pb data normalized by fine fraction |
| 24 | Age, minimum/young | Age min | a AD/CE | Ransby, Daniela | Constant Flux - Constant Sedimentation (CFCS) dating model | corrected; using 210Pb data normalized by fine fraction |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
802 data points