ERDDAP > info > bcodmo_dataset_780261

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
		data	graph		files	public	Scanning Electron Microscopy (SEM) photographs of biofilms on indium tin oxide electrodes from cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V A		I   M	background			BCO-DMO	bcodmo_dataset_780261

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
attribute	NC_GLOBAL	acquisition_description	String	Microbial fuel cells (MFCs) were used to conduct cathodic poised potential experiments as described in Jones et al. (in preparation). After cyclic voltametry scanning of the indium tin oxide electrodes in the fuel cells at the end of the experiment, the ITO electrodes were carefully removed from the MFCs and split into two sections using a diamond scribe and tweezers for microscopy and DNA analysis. One piece was serially dehydrated in ethanol solutions (10 min steps each at 50:50, 60:40, 70:30, 80:20, 90:10 and 100:0 ratios of ethanol:distilled water) and hexamethyldisilizane (10 min) and air dried for 3 days in a HEPA-filtered biosafety cabinet in preparation for scanning electron microscopy (SEM), following methods available elsewhere (DAngelo and Orcutt, 2019). Dehydrated slide pieces were then mounted onto 12 -mm-diameter SEM stubs with double-sided carbon tape, sputter coated with gold with a Denton Vacuum Desk IV cold sputter instrument (Denton Vacuum LLC, Moorestown, NJ), and imaged with a Zeiss Supra25 SEM at between 5-10 kV and a working distance between 3-9 mm.
attribute	NC_GLOBAL	awards_0_award_nid	String	707761
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1536539
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1536539
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	Barbara Ransom
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	661067
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	AT39-01 CathodicEET SEM PI: Beth N. Orcutt Data Version 1: 2020-02-03
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	date_created	String	2019-10-30T19:33:25Z
attribute	NC_GLOBAL	date_modified	String	2020-02-11T16:02:38Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.780261.1
attribute	NC_GLOBAL	Easternmost_Easting	double	-46.053
attribute	NC_GLOBAL	geospatial_lat_max	double	22.8023
attribute	NC_GLOBAL	geospatial_lat_min	double	22.7564
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	-46.053
attribute	NC_GLOBAL	geospatial_lon_min	double	-46.0817
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/780261
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	SEM
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	780459
attribute	NC_GLOBAL	instruments_0_description	String	Scanning electron microscope
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Scanning Electron Microscope
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	637895
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Zeiss Supra25 field emission scanning microscope
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, cruise, data, dataset, date, depth, dmo, erddap, experiment, ExperimentID, flocsdeploy, flocsdepth, flocsrecover, FLOCSrecoverDate, flocssubstrate, fluidcollection, FluidcollectionCruise, FluidcollectionDate, imagelink, imagename, latitude, longitude, management, oceanography, office, preliminary, sample, SampleID, time, treatment, water, WaterDepth
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/780261/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/780261
attribute	NC_GLOBAL	Northernmost_Northing	double	22.8023
attribute	NC_GLOBAL	param_mapping	String	{'780261': {'Latitude': 'master - latitude', 'Longitude': 'master - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/780261/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Bigelow Laboratory for Ocean Sciences
attribute	NC_GLOBAL	people_0_person_name	String	Beth N. Orcutt
attribute	NC_GLOBAL	people_0_person_nid	String	565799
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	Amber York
attribute	NC_GLOBAL	people_1_person_nid	String	643627
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	North Pond 2017
attribute	NC_GLOBAL	projects_0_acronym	String	North Pond 2017
attribute	NC_GLOBAL	projects_0_description	String	NSF Award Abstract: Seawater circulates through the upper part of the oceanic crust much like groundwater flows through continental aquifers. However, in the ocean this seawater circulation, many times heated by buried magmatic bodies, transports and releases 25% of the Earth's heat. The rate of fluid flow through ocean crust is estimated to be equal to the amount of water delivered by rivers to the ocean. Much of what we know of this subseafloor fluid flow comes from studies in the eastern Pacific Ocean on ocean crust created by medium and fast spreading mid-ocean ridges. These studies indicate that seawater and its circulation through the seafloor significantly impact crustal evolution and biogeochemical cycles in the ocean and affect the biosphere in ways that are just now beginning to be quantified and understood. To expand this understanding, this research focuses on fluid flow of seafloor generated by slow spreading ridges, like those in the Atlantic, Indian and Arctic Oceans because it is significantly different in structure, mineralogy, and morphology than that formed at fast and intermediate spreading ridges. This research returns to North Pond, a long-term; seafloor; fluid flow monitoring site, drilled and instumented by the Ocean Drilling Program in the Atlantic Ocean. This research site was punctured by boreholes in which fluid flow and geochemical and biological samplers have been deployed for a number of years to collect data and samples. It also provides resources for shipboard and on-shore geochemical and biological analysis. Broader impacts of the work include sensor and technology development, which increases infrastructure for science and has commercial applications. It also provides training for students and the integration of education and research at three US academic institutions, one of which is an EPSCoR state (Mississippi), and supports a PI whose gender is under-represented in sciences and engineering. Public outreach will be carried out in conjunction with the Center for Dark Energy Biosphere Investigations. This project completes a long-term biogeochemical and hydrologic study of ridge flank hydrothermal processes on slow-spreading, 8 million year old crust on the western flank of the Mid-Atlantic Ridge. The site, North Pond, is an isolated northeast-trending sediment pond, bounded by undersea mountains that have been studied since the 1970s. During Integrated Ocean Drilling Program Expedition 336 in 2011 and an expedition five months later (2012), sensors, samplers, and experiments were deployed in four borehole observatories drilled into the seafloor that penetrated into volcanic crust, with the purpose of monitoring changes in hydrologic properties, crustal fluid composition and mineral alteration, among other objectives. Wellhead sampling in 2012 and 2014 already revealed changes in crustal fluid compositions; and associated pressure data confirm that the boreholes are sealed and overpressured, reflecting a change in the formation as the boreholes recover from drilling disturbances. This research includes a 13-day oceanographic expedition and use of on-site robotically operated vehicles to recover downhole instrument packages at North Pond. It will allow the sampling of crustal fluids, recovering pressure data, and measuring fluid flow rates. Ship- and shore-based analyses will be used to address fundamental questions related to the hydrogeology of hydrothermal processes on slow-spread crust.
attribute	NC_GLOBAL	projects_0_end_date	String	2018-09
attribute	NC_GLOBAL	projects_0_geolocation	String	North Pond, Mid-Atlantic Ridge flank CORKs
attribute	NC_GLOBAL	projects_0_name	String	Collaborative Research: Completing North Pond Borehole Experiments to Elucidate the Hydrology of Young, Slow-Spread Crust
attribute	NC_GLOBAL	projects_0_project_nid	String	707762
attribute	NC_GLOBAL	projects_0_project_website	String	http://www.darkenergybiosphere.org/research-activities/field-sites/
attribute	NC_GLOBAL	projects_0_start_date	String	2015-10
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	22.7564
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Scanning Electron Microscopy (SEM) photographs of biofilms on indium tin oxide electrodes from cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V Atlantis cruise AT39-01.
attribute	NC_GLOBAL	title	String	Scanning Electron Microscopy (SEM) photographs of biofilms on indium tin oxide electrodes from cathodic poised potential experiments with subsurface crustal samples from CORK borehole observatories at North Pond on the Mid-Atlantic Ridge during R/V A
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	-46.0817
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	SampleID		String
attribute	SampleID	bcodmo_name	String	sample
attribute	SampleID	description	String	Sample identifier (unique file names for .tif images)
attribute	SampleID	long_name	String	Sample ID
attribute	SampleID	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P02/current/ACYC/
attribute	SampleID	units	String	unitless
variable	ExperimentID		String
attribute	ExperimentID	bcodmo_name	String	exp_id
attribute	ExperimentID	description	String	Text description of experiment with microbial fuel cells; values of NP11, NP12, NP13, NP14 or NP15
attribute	ExperimentID	long_name	String	Experiment ID
attribute	ExperimentID	units	String	unitless
variable	Treatment		String
attribute	Treatment	bcodmo_name	String	treatment
attribute	Treatment	description	String	Treatment of the microbial fuel cell; values of Offline (with sample but no voltage applied), Fluid (with filtered fluid only/no sample and with voltage applied), or Echem (with sample and voltage applied)
attribute	Treatment	long_name	String	Treatment
attribute	Treatment	units	String	unitless
variable	imagename		String
attribute	imagename	bcodmo_name	String	file_name
attribute	imagename	description	String	Scanning Electron Microscopy (SEM) photograph imagename.
attribute	imagename	long_name	String	Imagename
attribute	imagename	units	String	unitless
variable	FLOCSsubstrate		String
attribute	FLOCSsubstrate	bcodmo_name	String	sample_descrip
attribute	FLOCSsubstrate	description	String	Description of the FLOCS sample type put into the microbial fuel cell; values of Mixed (a mixture of samples), NA (not applicable, no sample), Basalt, Glass Wool, or Pyrrhotite
attribute	FLOCSsubstrate	long_name	String	FLOCSsubstrate
attribute	FLOCSsubstrate	units	String	unitless
variable	FLOCSdeployDate		String
attribute	FLOCSdeployDate	bcodmo_name	String	date
attribute	FLOCSdeployDate	description	String	Date of the FLOCS deployment, in ISO 8601 format yyyy-mm-dd
attribute	FLOCSdeployDate	long_name	String	FLOCSdeploy Date
attribute	FLOCSdeployDate	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	FLOCSdeployDate	source_name	String	FLOCSdeployDate
attribute	FLOCSdeployDate	time_precision	String	1970-01-01
attribute	FLOCSdeployDate	units	String	unitless
variable	FLOCSdepth		String
attribute	FLOCSdepth	bcodmo_name	String	meters below seafloor
attribute	FLOCSdepth	description	String	Approximate depth, in meters below seafloor, where the FLOCS experiment was deployed
attribute	FLOCSdepth	long_name	String	FLOCSdepth
attribute	FLOCSdepth	units	String	meters below seafloor (m)
variable	FLOCSrecoverDate		String
attribute	FLOCSrecoverDate	bcodmo_name	String	date
attribute	FLOCSrecoverDate	description	String	Date of the FLOCS recovery, in ISO 8601 format yyyy-mm-dd
attribute	FLOCSrecoverDate	long_name	String	FLOCSrecover Date
attribute	FLOCSrecoverDate	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	FLOCSrecoverDate	time_precision	String	1970-01-01
attribute	FLOCSrecoverDate	units	String	unitless
variable	FluidcollectionCruise		String
attribute	FluidcollectionCruise	bcodmo_name	String	cruise_id
attribute	FluidcollectionCruise	description	String	Name of the cruise and ROV Jason dive number when the crustal fluid was collected; values of AT39-01 (R/V Atlantis cruise AT39-01) + J2-#### (ROV Jason dive number)
attribute	FluidcollectionCruise	long_name	String	Fluidcollection Cruise
attribute	FluidcollectionCruise	units	String	unitless
variable	FluidcollectionDate		String
attribute	FluidcollectionDate	bcodmo_name	String	date
attribute	FluidcollectionDate	description	String	Date of the collection of the crustal fluids, in ISO 8601 format yyyy-mm-dd
attribute	FluidcollectionDate	long_name	String	Fluidcollection Date
attribute	FluidcollectionDate	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	FluidcollectionDate	time_precision	String	1970-01-01
attribute	FluidcollectionDate	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	22.7564, 22.8023
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	Degree decimal minutes N latitude of the FLOCS experiment
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	-46.0817, -46.053
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	Degree decimal minates W longitude of the FLOCS experiment
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	WaterDepth		short
attribute	WaterDepth	_FillValue	short	32767
attribute	WaterDepth	actual_range	short	4414, 4483
attribute	WaterDepth	bcodmo_name	String	depth_w
attribute	WaterDepth	description	String	water depth to seafloor of the IODP Hole
attribute	WaterDepth	long_name	String	Water Depth
attribute	WaterDepth	units	String	meters (m)
variable	imagelink		String
attribute	imagelink	bcodmo_name	String	file_link
attribute	imagelink	description	String	URL for SEM image
attribute	imagelink	long_name	String	Imagelink
attribute	imagelink	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.