ERDDAP > info > bcodmo_dataset_809807

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	[Table 1. 210Pb, 210Bi, and 210Po activities in rain and lake water] - Table 1: Pb-210, Bi- 210, and Po-210 activity measurements in rain, lake water, and dreissenid (Quagga) mussels collected in the Milwaukee Inner Harbor on Lake Michigan, Nov. 2018 (The measurement and use of bismuth-210 as a tracer of particle flux in aquatic systems)		F   I   M	background			BCO-DMO	bcodmo_dataset_809807

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	access_formats	String	.htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute	NC_GLOBAL	acquisition_description	String	A detailed description of the methods for determining in situ 210Pb, 210Bi, and 210Po activities is given by Waples (2020). A second manuscript describing the use of Pb-210, Bi-210, and Po-210 as particle tracers in aquatic systems is currently in review for Limnology and Oceanography (March/2020). Water samples collected by submersible pump were weighed and filtered through nitrocellulose filters (0.45 um, 293 mm, Millipore) within two hours of sample collection to separate dissolved and particle-bound nuclide fractions of 210Pb, 210Bi, and 210Po. Yield monitors of 207Bi and 209Po (Eckert & Ziegler Isotope Products) were then added to both fractions. No lead monitor was required. Dissolved nuclide fractions (< 0.45 um) of 210Pb, 210Bi, and 210Po were co-precipitated onto newly formed ferric hydroxide and collected by filtration. Both particle-bound and dissolved nuclide fractions were then digested in concentrated nitric acid. Bismuth and polonium were completely separated from lead on EmporeTM anion solid phase extraction (SPE) disks (3M, 47 mm, product number 2252, now manufactured by CDS Analytical). Eluate from the particle-bound fraction was re-spiked with 207Bi and set aside for ~one month for the determination of particle-bound 210Pb (via 210Bi in secular equilibrium with its parent). Anion SPE disks were then counted\u2013 first for 210Bi via b-decay on a low background gas-flow proportional detector with anticoincidence circuitry (G542 System, Gamma Products), then for 207Bi via g-emission to determine yield. Polonium was then removed from the SPE disks, plated to copper, and a-counted for 210Po and the yield monitor 209Po. Total 210Pb was determined in a separate water sample via 210Bi that had grown into secular equilibrium with its parent. Activity calculations including uncertainty propagation and decay corrections are all fully described by Waples (2020). Rainwater was collected at ground level (43.017719, -87.903000) in a large plastic barrel fitted with a funnel (0.216 m2 collection area) over a 40-h period during an extended rain event beginning at 17:20 (CST) on 03 November 2018. The funnel and barrel were rinsed before and after the collection event with a total of 0.4 L of 1 M HCl. Lake water samples (~ 50 L) for radionuclide analyses were collected from the slip (43.017835, -87.903521) with a submersible pump from a depth of 2 m on 08 November, 15 November, and 20 November 2018. Quagga mussels (Dreissena rostriformis bugensis) were collected from the slip wall (43.017829, -87.904407) on 29 November 2018. Each mussel was measured for shell length and sorted into two groups of large (range: 18\u201322 mm; geometric mean: 19 mm; n = 10) and small (10\u201316 mm; geometric mean: 13 mm; n = 20) mussels. Mussel tissue was separated from the shell, pooled by group into two glass beakers, and digested in concentrated HNO3. Shell-free biomass was estimated using the allometric equation m = 0.0018 \u00d7 L3.11, where m is the tissue dry weight in mg (DW mg) and L is the mussel shell length in mm (Waples et al. 2017). Software used: - Maestro software (v. 6.04 and 6.06, Advanced Measurement Technology) - SigmaPlot (v. 11, Systat Software) - Excel (v. 2002, Microsoft)
attribute	NC_GLOBAL	awards_0_award_nid	String	806356
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1639865
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1639865
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Ocean Sciences
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF OCE
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	355
attribute	NC_GLOBAL	awards_0_program_manager	String	Henrietta N Edmonds
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	51517
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Table 1. 210Pb, 210Bi, and 210Po activities in rain and lake water Lake Michigan, Nov. 2018 PI: J. Waples (UW-Milwaukee) version date: 2020-04-22
attribute	NC_GLOBAL	Conventions	String	COARDS, CF-1.6, ACDD-1.3
attribute	NC_GLOBAL	creator_email	String	info at bco-dmo.org
attribute	NC_GLOBAL	creator_name	String	BCO-DMO
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	https://www.bco-dmo.org/
attribute	NC_GLOBAL	data_source	String	extract_data_as_tsv version 2.3 19 Dec 2019
attribute	NC_GLOBAL	dataset_current_state	String	Final and no updates
attribute	NC_GLOBAL	date_created	String	2020-04-22T14:32:33Z
attribute	NC_GLOBAL	date_modified	String	2020-05-20T12:28:04Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.809807.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-87.903
attribute	NC_GLOBAL	geospatial_lat_max	double	43.01784
attribute	NC_GLOBAL	geospatial_lat_min	double	43.01772
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-87.903
attribute	NC_GLOBAL	geospatial_lon_min	double	-87.90352
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	2.0
attribute	NC_GLOBAL	geospatial_vertical_min	double	2.0
attribute	NC_GLOBAL	geospatial_vertical_positive	String	down
attribute	NC_GLOBAL	geospatial_vertical_units	String	m
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/809807
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	811175
attribute	NC_GLOBAL	instruments_0_description	String	Instruments measuring the relative levels of electromagnetic radiation of different wavelengths in the gamma-ray waveband.
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Gamma Ray Spectrometer
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	670659
attribute	NC_GLOBAL	instruments_0_supplied_name	String	low background gas-flow proportional detector with anticoincidence circuitry (G542 System, Gamma Products)
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, Bi_calc_method, Bi_dpm, Bi_stdev, biological, calc, chemical, data, dataset, date, depth, depth2, deviation, dmo, dpm, erddap, iso, ISO_DateTime_UTC, latitude, local, longitude, management, method, oceanography, office, Pb_calc_method, Pb_dpm, Pb_stdev, Po_calc_method, Po_dpm, Po_stdev, preliminary, sample, standard, standard deviation, stdev, time, type
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/809807/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/809807
attribute	NC_GLOBAL	Northernmost_Northing	double	43.01784
attribute	NC_GLOBAL	param_mapping	String	{'809807': {'latitude': 'master - latitude', 'depth': 'master - depth', 'longitude': 'master - longitude', 'ISO_DateTime_UTC': 'master - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/809807/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of Wisconsin
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	UW-Milwaukee
attribute	NC_GLOBAL	people_0_person_name	String	James T. Waples
attribute	NC_GLOBAL	people_0_person_nid	String	806359
attribute	NC_GLOBAL	people_0_role	String	Principal Investigator
attribute	NC_GLOBAL	people_0_role_type	String	originator
attribute	NC_GLOBAL	people_1_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_1_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_1_person_name	String	Nancy Copley
attribute	NC_GLOBAL	people_1_person_nid	String	50396
attribute	NC_GLOBAL	people_1_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	project	String	Bi 210 measurement
attribute	NC_GLOBAL	projects_0_acronym	String	Bi 210 measurement
attribute	NC_GLOBAL	projects_0_description	String	Naturally occurring radioactive nuclides provide invaluable "clocks" with which to investigate a wide range of processes in earth and environmental sciences. Nuclides with shorter half-lives are well suited to studying rapid processes, but are often present at very low concentrations and are particularly difficult to measure. The goal of this Early Concept Grant for Exploratory Research (EAGER) is to develop and demonstrate a new analytical method for measuring bismuth-210 (half life, 5 days) in lake water, seawater, and associated particles. Because bismuth tends to become associated with particles more than its parent isotope lead-210 (half life, 22 years), the bismuth-210/lead-210 daughter/parent pair can potentially be used to investigate very short time-scale processes associated with particle (sediment) formation and cycling in lakes and the coastal ocean. Knowledge about such processes is important to understanding carbon and nutrient cycling in these productive and dynamic areas. The specific goals of this exploratory project are to 1) demonstrate an improved method for measuring the lead-210/bismuth-210/polonium-210 trio in aquatic system samples; 2) measure lead-210/bismuth-210/polonium-210 in Lake Michigan; and 3) explore the feasibility of using bismuth-210/lead-210 disequilibrium as a proxy for particle flux. The project would support an undergraduate student researcher for the summer.
attribute	NC_GLOBAL	projects_0_end_date	String	2019-06
attribute	NC_GLOBAL	projects_0_geolocation	String	Lake Michigan 43.0 N 87.9 W
attribute	NC_GLOBAL	projects_0_name	String	The measurement and use of bismuth-210 as a tracer of particle flux in aquatic systems
attribute	NC_GLOBAL	projects_0_project_nid	String	806357
attribute	NC_GLOBAL	projects_0_start_date	String	2016-07
attribute	NC_GLOBAL	publisher_name	String	Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute	NC_GLOBAL	publisher_type	String	institution
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	43.01772
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Pb-210, Bi-210, and Po-210 activity measurements in rain, lake water, and dreissenid (Quagga) mussels collected at the School of Freshwater Sciences\u2019 slip in the Milwaukee Inner Harbor on Lake Michigan, Nov. 2018. This is table 1 in Waples (2020), Limnol. Oceanogr. Methods.
attribute	NC_GLOBAL	time_coverage_end	String	2018-11-20T16:17:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2018-11-04T18:00:00Z
attribute	NC_GLOBAL	title	String	[Table 1. 210Pb, 210Bi, and 210Po activities in rain and lake water] - Table 1: Pb-210, Bi-210, and Po-210 activity measurements in rain, lake water, and dreissenid (Quagga) mussels collected in the Milwaukee Inner Harbor on Lake Michigan, Nov. 2018 (The measurement and use of bismuth-210 as a tracer of particle flux in aquatic systems)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-87.90352
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.5
variable	sample		String
attribute	sample	bcodmo_name	String	sample
attribute	sample	description	String	sample identifier
attribute	sample	long_name	String	Sample
attribute	sample	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	sample	units	String	unitless
variable	type		String
attribute	type	bcodmo_name	String	sample_descrip
attribute	type	description	String	fraction of sample: T = total; D = dissolved (< 0.45um); P = particulate
attribute	type	long_name	String	Type
attribute	type	units	String	unitless
variable	ISO_DateTime_Local		String
attribute	ISO_DateTime_Local	bcodmo_name	String	ISO_DateTime_Local
attribute	ISO_DateTime_Local	description	String	sample collection local date and time; ISO formatted yyyy-mm-ddTHH:MM:SS (UTC- 6 hr)
attribute	ISO_DateTime_Local	long_name	String	ISO Date Time Local
attribute	ISO_DateTime_Local	source_name	String	ISO_DateTime_Local
attribute	ISO_DateTime_Local	time_precision	String	1970-01-01T00:00:00Z
attribute	ISO_DateTime_Local	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.5413544E9, 1.54273062E9
attribute	time	axis	String	T
attribute	time	bcodmo_name	String	ISO_DateTime_UTC
attribute	time	description	String	sample collection date and time; ISO formatted yyyy-mm-ddTHH:MM:SSZ (converted to UTC from local: UTC- 6 hr)
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	ISO Date Time UTC
attribute	time	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	time_precision	String	1970-01-01T00:00:00Z
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	43.01772, 43.01784
attribute	latitude	axis	String	Y
attribute	latitude	bcodmo_name	String	latitude
attribute	latitude	colorBarMaximum	double	90.0
attribute	latitude	colorBarMinimum	double	-90.0
attribute	latitude	description	String	latitude; north is positive
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LATX/
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
variable	longitude		double
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	_FillValue	double	NaN
attribute	longitude	actual_range	double	-87.90352, -87.903
attribute	longitude	axis	String	X
attribute	longitude	bcodmo_name	String	longitude
attribute	longitude	colorBarMaximum	double	180.0
attribute	longitude	colorBarMinimum	double	-180.0
attribute	longitude	description	String	longitude; east is positive
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/LONX/
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	2.0, 2.0
attribute	depth	axis	String	Z
attribute	depth	bcodmo_name	String	depth
attribute	depth	description	String	sample depth
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P09/current/DEPH/
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
variable	Pb_dpm		short
attribute	Pb_dpm	_FillValue	short	32767
attribute	Pb_dpm	actual_range	short	38, 17342
attribute	Pb_dpm	bcodmo_name	String	radioactive_isotope_activity
attribute	Pb_dpm	description	String	Lead 210Pb activity in total (T); dissolved (D); or particulate (P) fraction of sample
attribute	Pb_dpm	long_name	String	PB DPM
attribute	Pb_dpm	units	String	disintegrations/minute/minute^3 (DPM m-3)
variable	Pb_stdev		short
attribute	Pb_stdev	_FillValue	short	32767
attribute	Pb_stdev	actual_range	short	3, 588
attribute	Pb_stdev	bcodmo_name	String	radioactive_isotope_activity
attribute	Pb_stdev	description	String	standard deviation of 210Pb activity
attribute	Pb_stdev	long_name	String	Pb Stdev
attribute	Pb_stdev	units	String	disintegrations/minute/minute^3 (DPM m-3)
variable	Pb_calc_method		String
attribute	Pb_calc_method	bcodmo_name	String	comment
attribute	Pb_calc_method	description	String	c = comment that 210Pb values were calculated by difference or sum (errors propagated)
attribute	Pb_calc_method	long_name	String	Pb Calc Method
attribute	Pb_calc_method	units	String	unitless
variable	Bi_dpm		short
attribute	Bi_dpm	_FillValue	short	32767
attribute	Bi_dpm	actual_range	short	33, 10040
attribute	Bi_dpm	bcodmo_name	String	radioactive_isotope_activity
attribute	Bi_dpm	description	String	Bismuth 210Bi activity in total (T); dissolved (D); or particulate (P) fraction of sample
attribute	Bi_dpm	long_name	String	Bi Dpm
attribute	Bi_dpm	units	String	disintegrations/minute/minute^3 (DPM m-3)
variable	Bi_stdev		short
attribute	Bi_stdev	_FillValue	short	32767
attribute	Bi_stdev	actual_range	short	3, 614
attribute	Bi_stdev	bcodmo_name	String	radioactive_isotope_activity
attribute	Bi_stdev	description	String	standard deviation of 210Bi activity
attribute	Bi_stdev	long_name	String	Bi Stdev
attribute	Bi_stdev	units	String	disintegrations/minute/minute^3 (DPM m-3)
variable	Bi_calc_method		String
attribute	Bi_calc_method	bcodmo_name	String	comment
attribute	Bi_calc_method	description	String	c = comment that 210Bi values were calculated by difference or sum (errors propagated)
attribute	Bi_calc_method	long_name	String	Bi Calc Method
attribute	Bi_calc_method	units	String	unitless
variable	Po_dpm		short
attribute	Po_dpm	_FillValue	short	32767
attribute	Po_dpm	actual_range	short	21, 893
attribute	Po_dpm	bcodmo_name	String	radioactive_isotope_activity
attribute	Po_dpm	description	String	Polonium 210Po activity in total (T); dissolved (D); or particulate (P) fraction of sample
attribute	Po_dpm	long_name	String	Po Dpm
attribute	Po_dpm	units	String	disintegrations/minute/minute^3 (DPM m-3)
variable	Po_stdev		byte
attribute	Po_stdev	_FillValue	byte	127
attribute	Po_stdev	actual_range	byte	1, 87
attribute	Po_stdev	bcodmo_name	String	radioactive_isotope_activity
attribute	Po_stdev	description	String	standard deviation of 210Po activity
attribute	Po_stdev	long_name	String	Po Stdev
attribute	Po_stdev	units	String	disintegrations/minute/minute^3 (DPM m-3)
variable	Po_calc_method		String
attribute	Po_calc_method	bcodmo_name	String	comment
attribute	Po_calc_method	description	String	c = comment that 210Po values were calculated by difference or sum (errors propagated)
attribute	Po_calc_method	long_name	String	Po Calc Method
attribute	Po_calc_method	units	String	unitless

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.