Citation:

PANGAEA.956901

Name: Radionuclides and chronology of short sediment cores BY and ASH from the Israel inner Mediterranean shelf
Published: 2023-03-24
License: https://creativecommons.org/licenses/by/4.0/
Keywords: chronology; Mediterranean; Radionuclides; Sediment core

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Published: 2023-03-24 • DOI registered: 2023-09-29

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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.

Keyword(s):

chronology; Mediterranean; Radionuclides; Sediment core

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: * 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: * 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

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Depth sed [m]	3 Depth unc [±]	4 <63 µm [%]	5 137Cs [Bq/kg] ("<" values are below decision...)	6 137Cs unc [±] (High resolution, low backgrou...)	7 210Pb [Bq/kg] (total 210Pb, High resolution,...)	8 210Pb unc [±] (total 210Pb, High resolution,...)	9 214Pb [Bq/kg] (supported 210Pb, High resolut...)	10 214Pb unc [±] (supported 210Pb, High resolut...)	11 210Pb xs [Bq/kg] (Calculated)	12 210Pb xs unc [±] (Calculated)	13 210Pb xs [Bq/kg] (normalized by fine fraction, ...)	14 210Pb xs unc [±] (normalized by fine fraction, ...)	15 Age [a] (Constant Flux - Constant Sedi...)	16 Age dated [ka BP] (Constant Flux - Constant Sedi...)	17 Age [a AD/CE] (Constant Flux - Constant Sedi...)	18 Age max [a AD/CE] (Constant Flux - Constant Sedi...)	19 Age min [a AD/CE] (Constant Flux - Constant Sedi...)	20 Age [a] (corrected; using 210Pb data n...)	21 Age dated [ka BP] (corrected; using 210Pb data n...)	22 Age [a AD/CE] (corrected; using 210Pb data n...)	23 Age max [a AD/CE] (corrected; using 210Pb data n...)	24 Age min [a AD/CE] (corrected; using 210Pb data n...)
SHI-2007-ASH	0.005	0.005	65.6997	<0.84		29.7	7.3	20.4	1.8	9.3	7.5	27.1	21.9	2	-0.056	2006	2005	2006	3	-0.055	2005	2004	2005
SHI-2007-ASH	0.015	0.005	65.4628	<1.02		30.3	8.1	17.1	1.9	13.2	8.3	38.2	24.1	6	-0.052	2002	2000	2002	8	-0.049	1999	1998	2000
SHI-2007-ASH	0.025	0.005	60.1832	<0.43		30.5	3.5	15.3	1.1	15.2	3.7	38.2	9.2	10	-0.048	1998	1996	1999	14	-0.044	1994	1992	1996
SHI-2007-ASH	0.035	0.005	62.4940	<0.45		25.8	5.2	15.8	1.2	10.0	5.3	26.7	14.2	14	-0.044	1994	1991	1995	19	-0.038	1988	1985	1991
SHI-2007-ASH	0.045	0.005	60.2461	<0.52		35.7	5.1	17.1	1.2	18.6	5.2	46.8	13.2	18	-0.040	1990	1986	1992	24	-0.033	1983	1979	1986
SHI-2007-ASH	0.055	0.005	58.9128	<0.64		32.5	5.4	19.2	1.7	13.3	5.7	32.4	13.8	22	-0.036	1986	1981	1989	30	-0.028	1978	1973	1981
SHI-2007-ASH	0.065	0.005	58.7779	<0.81		25.8	6.1	16.2	1.5	9.6	6.3	23.3	15.2	26	-0.032	1982	1977	1985	35	-0.022	1972	1967	1976
SHI-2007-ASH	0.075	0.005	55.4809	0.37	0.37	25.7	4.7	18.1	1.5	7.6	4.9	17.1	11.1	30	-0.028	1978	1972	1982	41	-0.017	1967	1960	1972
SHI-2007-ASH	0.085	0.005	53.9141	<0.63		32.5	5.3	15.9	1.4	16.6	5.5	36.0	11.9	34	-0.024	1974	1967	1978	46	-0.011	1961	1954	1967
SHI-2007-ASH	0.095	0.005	38.8833	<1.04		23.6	4.8	17.0	1.6	6.6	5.1	10.8	8.3	38	-0.020	1970	1963	1975	52	-0.006	1956	1948	1962
SHI-2007-ASH	0.105	0.005	13.6911	0.96	0.23	23.5	4.6	14.8	1.3	8.7	4.8	10.1	5.5	42	-0.016	1966	1958	1971	57	0.000	1950	1941	1957
SHI-2007-ASH	0.115	0.005	12.8018	<0.92		33.0	8.7	13.7	1.8	19.3	8.9	22.1	10.2	46	-0.012	1962	1953	1968	63	0.005	1945	1935	1952
SHI-2007-ASH	0.125	0.005	10.0219	<0.84		23.5	5.3	15.4	1.7	8.1	5.6	9.0	6.2	50	-0.008	1958	1948	1964	68	0.011	1939	1929	1948
SHI-2007-ASH	0.135	0.005	13.1391	<0.69		22.9	4.5	14.4	1.3	8.5	4.7	9.8	5.4	54	-0.004	1954	1944	1961	73	0.016	1934	1922	1943
SHI-2007-ASH	0.145	0.005	9.0230	<0.45		15.6	3.2	17.6	1.2	-2.0	3.4	-2.2	3.8	58	0.000	1950	1939	1958	79	0.021	1929	1916	1938
SHI-2007-ASH	0.155	0.005	9.7944	<0.55		17.7	4.9	18.0	1.3	-0.3	5.1	-0.3	5.6	62	0.004	1946	1934	1954	84	0.027	1923	1910	1933
SHI-2007-ASH	0.165	0.005	13.1374	<0.53		13.2	4.9	16.0	1.2	-2.8	5.0	-3.2	5.8	66	0.008	1942	1929	1951	90	0.032	1918	1904	1928
SHI-2007-ASH	0.175	0.005	10.7612	<0.82		21.5	7.0	15.0	1.5	6.5	7.2	7.3	8.0	70	0.012	1938	1925	1947	95	0.038	1912	1897	1924
SHI-2007-ASH	0.185	0.005	9.5208	<0.63		19.1	6.6	14.9	1.4	4.2	6.7	4.6	7.5	74	0.016	1934	1920	1944	101	0.043	1907	1891	1919
SHI-2007-BY	0.005	0.005	45.0746	1.58	0.58	74.2	8.6	19.7	1.5	54.5	8.7	99.2	15.9	1	-0.056	2006	2005	2007	2	-0.055	2005	2005	2006
SHI-2007-BY	0.015	0.005	46.4127	0.80	0.38	56.5	7.9	19.1	1.5	37.4	8.0	69.8	15.0	4	-0.054	2004	2001	2005	6	-0.051	2001	1999	2002
SHI-2007-BY	0.025	0.005	44.4031	<0.71		59.9	6.4	18.3	1.6	41.6	6.6	74.8	11.9	6	-0.051	2001	1997	2003	11	-0.047	1997	1994	1999
SHI-2007-BY	0.035	0.005	44.3842	<0.68		43.8	6.1	17.7	1.5	26.1	6.3	46.9	11.3	9	-0.048	1998	1993	2001	15	-0.042	1992	1989	1995
SHI-2007-BY	0.045	0.005	40.3976	<0.67		68.7	7.0	16.0	1.6	52.7	7.2	88.4	12.0	12	-0.046	1996	1989	1999	19	-0.038	1988	1983	1991
SHI-2007-BY	0.055	0.005	32.3338	1.21	0.61	40.8	5.8	18.1	1.5	22.7	6.0	33.5	8.9	14	-0.043	1993	1985	1997	24	-0.034	1984	1978	1988
SHI-2007-BY	0.065	0.005	18.3248	0.67	0.37	37.7	5.6	17.2	1.3	20.5	5.7	25.1	7.0	17	-0.041	1991	1981	1995	28	-0.030	1980	1972	1984
SHI-2007-BY	0.075	0.005	20.7853	0.88	0.33	45.4	5.9	18.2	1.5	27.2	6.1	34.3	7.7	19	-0.038	1988	1977	1993	32	-0.025	1975	1967	1981
SHI-2007-BY	0.085	0.005	21.9521	<0.67		42.3	13.7	19.9	1.7	22.4	13.8	28.7	17.7	22	-0.036	1986	1973	1991	37	-0.021	1971	1962	1977
SHI-2007-BY	0.095	0.005	27.7649	<0.60		39.5	5.3	25.3	1.7	14.2	5.6	19.7	7.7	25	-0.033	1983	1969	1989	41	-0.017	1967	1956	1974
SHI-2007-BY	0.105	0.005	20.3415	<0.46		37.1	5.5	20.6	1.2	16.5	5.6	20.7	7.1	27	-0.030	1980	1965	1987	45	-0.012	1962	1951	1970
SHI-2007-BY	0.115	0.005	7.5873	<0.76		25.1	8.7	17.1	1.6	8.0	8.8	8.7	9.6	30	-0.028	1978	1961	1986	50	-0.008	1958	1945	1966
SHI-2007-BY	0.125	0.005	5.2849	<0.60		26.8	4.9	19.9	1.6	6.9	5.2	7.3	5.4	32	-0.025	1975	1957	1984	54	-0.004	1954	1940	1963
SHI-2007-BY	0.135	0.005		<0.99		28.5	7.6	18.8	2.2	9.7	7.9			35	-0.023	1973	1953	1982	58	0.001	1949	1935	1959
SHI-2007-BY	0.145	0.005	5.3969	<0.58		22.8	5.5	22.3	2.0	0.5	5.9	0.5	6.2	38	-0.020	1970	1949	1980	62	0.005	1945	1929	1956
SHI-2007-BY	0.155	0.005	4.5153	<0.71		30.9	7.0	18.9	1.9	12.0	7.3	12.6	7.6	40	-0.017	1967	1945	1978	67	0.009	1941	1924	1952
SHI-2007-BY	0.165	0.005	6.1309	<0.60		30.2	5.5	22.1	1.5	8.1	5.7	8.6	6.1	43	-0.015	1965	1941	1976	71	0.014	1936	1918	1948
SHI-2007-BY	0.175	0.005	7.2686	<0.73		32.7	6.0	24.9	2.0	7.8	6.3	8.4	6.8	45	-0.012	1962	1937	1974	75	0.018	1932	1913	1945
SHI-2007-BY	0.185	0.005	6.0018	<0.79		36.5	8.5	20.3	1.6	16.2	8.6	17.2	9.2	48	-0.010	1960	1933	1972	80	0.022	1928	1908	1941