Citation:

j.jenvrad.2017.06.021

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

Radionuclide concentrations were studied in a sediment core GeoB17409-1 taken at the continental slope of the Philippine Sea off Mindanao Island in the equatorial Western Pacific. High resolution deposition records of anthropogenic radionuclides were collected at this site. Excess 210Pb together with excess 228Th and anthropogenic radionuclides provided information about accumulation rates. Concentrations of Am and Pu isotopes were detected by gamma spectrometry, alpha spectrometry and ICP-MS. The Pu ratios indicate a high portion (minimum of 60%) of Pu from the Pacific Proving Grounds (PPG). This implies that the transport of PPG derived plutonium with the Mindanao Current southward is similarly effective as the previously known transport towards the north with the Kuroshio Current. The record is compared to other studies from northwest Pacific marginal seas and Lombok basin in the Indonesian Archipelago.

The sediment core top was found to contain a 6 cm thick layer dominated by terrestrial organic matter, which was interpreted as a result of the 2012 Typhoon Pablo-related fast deposition.

Project(s):

Center for Marine Environmental Sciences (MARUM)

Coverage:

Latitude: 7.858333 * Longitude: 126.554667

Date/Time Start: 2013-05-14T00:00:00 * Date/Time End: 2013-05-14T00:00:00

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.325 m

Event(s):

GeoB17409-1 * Latitude: 7.858333 * Longitude: 126.554667 * Date/Time: 2013-05-14T00:00:00 * Elevation: -501.0 m * Campaign: (EISPAC/WESTWIND) * Basis: * Method/Device: MultiCorer (MUC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Depth, top/min	Depth top	m	Pittauer, Daniela
2	Depth, bottom/max	Depth bot	m	Pittauer, Daniela
3	DEPTH, sediment/rock	Depth sed	m	Pittauer, Daniela		Geocode
4	Water content, relative	mw		Pittauer, Daniela
5	Density, dry bulk	DBD	g/cm³	Pittauer, Daniela
6	Density, dry bulk	DBD	g/cm³	Pittauer, Daniela		fitted
7	Cumulative mass	Cum mass	g/cm²	Pittauer, Daniela
8	Potassium-40	40K	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	K-40 [Bq/kg (d.m.)]
9	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	K-40, uncertainty [Bq/kg (d.m.)],1 sigma
10	Thallium-208	208Tl	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Ti-208 [Bq/kg (d.m.)]
11	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Tl-208, uncertainty [Bq/kg (d.m.)],1 sigma
12	Lead-210 activity per mass	210Pb	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Pb-210, total [Bq/kg (d.m.)]
13	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Pb-210 (total), uncertainty [Bq/kg (d.m.)],1 sigma
14	Lead-212	212Pb	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Pb-212 [Bq/kg (d.m.)]
15	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Pb-212, uncertainty [Bq/kg (d.m.)],1 sigma
16	Lead-214 activity per mass	214Pb	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Pb-214 [Bq/kg (d.m.)]
17	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Pb-214, uncertainty [Bq/kg (d.m.)],1 sigma
18	Actinium-228	228Ac	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Ac-228 [Bq/kg (d.m.)]
19	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Ac-228, uncertainty [Bq/kg (d.m.)],1 sigma
20	Lead-210 excess	210Pb xs	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Pb-210 (excess) [Bq/kg (d.m.)]
21	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Pb-210 (excess), uncertainty [Bq/kg (d.m.)],1 sigma
22	Thorium-228 excess	228Th xs	Bq/kg	Pittauer, Daniela		Th-228 (excess) [Bq/kg (d.m.)]
23	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Th-228 (excess), uncertainty [Bq/kg (d.m.)],1 sigma
24	Caesium-137	137Cs	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Cs-137 [Bq/kg (d.m.)]
25	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Cs-137, uncertainty [Bq/kg (d.m.)],1 sigma
26	Caesium-137, decision threshold	137Cs d t	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Cs-137 decision threshold [Bq/kg (d.m.)]
27	Americium-241	241Am	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Am-241 [Bq/kg (d.m.)]
28	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Am-241, uncertainty [Bq/kg (d.m.)],1 sigma
29	Americium-241 decision threshold	241Am d t	Bq/kg	Pittauer, Daniela	Gamma-ray spectrometry	Am-241 decision threshold [Bq/kg (d.m.)]
30	Americium-241/Caesium-137 ratio	241Am/137Cs		Pittauer, Daniela	Gamma-ray spectrometry	Am-241/Cs-137, activity ratio
31	Uncertainty	Uncertainty	±	Pittauer, Daniela	Gamma-ray spectrometry	Am-241/Cs-137, activity ratio uncertainty, 1 sigma
32	Plutonium-239+240	239+240Pu	Bq/kg	Pittauer, Daniela	Alpha spectrometry	Pu239+240 [Bq/kg (d.m.)]
33	Uncertainty	Uncertainty	±	Pittauer, Daniela	Alpha spectrometry	Pu239+240 uncertinity [Bq/kg (d.m.)], 1 sigma
34	Plutonium-239+240	239+240Pu	Bq/kg	Roos, Per	ICP-MS	Pu239+240 [Bq/kg (d.m.)]
35	Uncertainty	Uncertainty	±	Roos, Per	ICP-MS	Pu239+240 uncertinity [Bq/kg (d.m.)], 1 sigma
36	Plutonium-238	238Pu	Bq/kg	Pittauer, Daniela	Alpha spectrometry	Pu-238 [Bq/kg (d.m.)]
37	Uncertainty	Uncertainty	±	Pittauer, Daniela	Alpha spectrometry	Pu-238 uncertainty [Bq/kg (d.m.)], 1 sigma
38	Plutonium-238/(Plutonium-239+240) activity ratio	238Pu/239+240Pu		Pittauer, Daniela	Alpha spectrometry	Pu-238 / Pu-239+240 activity ratio
39	Uncertainty	Uncertainty	±	Pittauer, Daniela	Alpha spectrometry	Pu-238 / Pu-239+240 uncertainty, 1 sigma
40	Plutonium-240/Plutonium-239, atomic ratio	240Pu/239Pu atom		Roos, Per	ICP-MS	Pu-240/Pu-239 atom ratio
41	Uncertainty	Uncertainty	±	Roos, Per	ICP-MS	Pu-240/Pu-239 atom ratio uncertainty
42	Fraction	Fraction		Pittauer, Daniela	2 member mixing model	Fraction of plutonium originationg from the Pacific Profing Grounds (PPG)
43	Uncertainty	Uncertainty	±	Pittauer, Daniela	2 member mixing model	Fraction of plutonium originationg from the Pacific Profing Grounds (PPG) uncertainty, 1 sigma
44	Age	Age	a AD/CE	Pittauer, Daniela	CF-CS model (2 sections)	Calendar year (mid-layer)
45	Age, uncertainty	Age unc	±	Pittauer, Daniela	CF-CS model (2 sections)	Calendar year uncertainty
46	Carbon, organic, total	TOC	%	Elvert, Marcus
47	Carbon, organic, total, standard deviation	TOC std dev	±	Elvert, Marcus		TOC uncertainty
48	δ13C, organic carbon	δ13C Corg	‰ PDB	Elvert, Marcus
49	δ13C, organic carbon, standard error	δ13C Corg std e	±	Elvert, Marcus		d13C uncertainty

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

1248 data points

Download Data

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

View dataset as HTML