ERDDAP > info > bcodmo_dataset_809857

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
	set	data	graph		files	public	[Table 2. Suspended particulate matter (SPM) concentrations in lake water] - Table 2: Suspended particulate matter (SPM) concentrations in lake water (The measurement and use of bismuth-210 as a tracer of particle flux in aquatic systems)		F   I   M	background			BCO-DMO	bcodmo_dataset_809857

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). 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. 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). 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. 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 2. Suspended particulate matter (SPM) concentrations in 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	2020-04-22T20:49:57Z
attribute	NC_GLOBAL	date_modified	String	2020-05-20T12:28:18Z
attribute	NC_GLOBAL	defaultDataQuery	String	&amp;time&lt;now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.809857.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-87.903521
attribute	NC_GLOBAL	geospatial_lat_max	double	43.017835
attribute	NC_GLOBAL	geospatial_lat_min	double	43.017835
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-87.903521
attribute	NC_GLOBAL	geospatial_lon_min	double	-87.903521
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/809857
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, data, dataset, date, depth, dmo, erddap, iso, ISO_DateTime_UTC, latitude, local, longitude, management, oceanography, office, preliminary, sample, spm, SPM_b, time
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/809857/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/809857
attribute	NC_GLOBAL	Northernmost_Northing	double	43.017835
attribute	NC_GLOBAL	param_mapping	String	{'809857': {'latitude': 'flag - latitude', 'depth': 'flag - depth', 'longitude': 'flag - longitude', 'ISO_DateTime_UTC': 'flag - time'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/809857/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	43.017835
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	subsetVariables	String	latitude,longitude,depth
attribute	NC_GLOBAL	summary	String	Table 2. Suspended particulate matter (SPM) concentrations in lake water, Lake Michigan, Nov. 2018
attribute	NC_GLOBAL	time_coverage_end	String	2018-11-20T16:09:00Z
attribute	NC_GLOBAL	time_coverage_start	String	2018-11-08T15:43:00Z
attribute	NC_GLOBAL	title	String	[Table 2. Suspended particulate matter (SPM) concentrations in lake water] - Table 2: Suspended particulate matter (SPM) concentrations in lake water (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	-87.903521
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	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	1970-01-01T00:00Z
attribute	ISO_DateTime_Local	units	String	unitless
variable	time		double
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.54169178E9, 1.54273014E9
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	43.017835, 43.017835
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	-87.903521, -87.903521
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	colorBarMaximum	double	8000.0
attribute	depth	colorBarMinimum	double	-8000.0
attribute	depth	colorBarPalette	String	TopographyDepth
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	SPM_b		float
attribute	SPM_b	_FillValue	float	NaN
attribute	SPM_b	actual_range	float	0.64, 3.62
attribute	SPM_b	bcodmo_name	String	SPM
attribute	SPM_b	description	String	suspended particulate matter (>0.45 microns)
attribute	SPM_b	long_name	String	SPM B
attribute	SPM_b	units	String	grams/meter^3 (g m-3)

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.