ERDDAP > info > bcodmo_dataset_810923

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			files	public	Supplementary Table 2: Drill fluid contamination testiFMC in drilling. GC mass spectrometry measurements of concentrations of the tracers PFMD and Png fluid and sample materials		I   M	background			BCO-DMO	bcodmo_dataset_810923

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
attribute	NC_GLOBAL	acquisition_description	String	Contamination controls. Rotary coring contaminates the exteriors of core samples due to the circulation of drilling fluids (a mixture of Sepiolite and surface seawater) around the drilling bits. Extreme care was taken to remove/minimize this contamination and to not introduce new contamination during sample handling and analysis. During IODP Expedition 360, a new less volatile tracer, perfluoromethyldecalin (PFMD), was successfully tested and calibrated and thus used to quantify intrusion of drilling fluids into the interior of samples.
attribute	NC_GLOBAL	awards_0_award_nid	String	709555
attribute	NC_GLOBAL	awards_0_award_number	String	OCE-1658031
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1658031
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	David L. Garrison
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50534
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Supplementary Table 2: Drill fluid PI: Virginia Edgcomb Data Version 1: 2020-05-12 Abbreviations: bd=below detection limit; ad=above detection limit Superscripts: -a: after 4 washes; -b: after 3 washes ; -c: no core liner used
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	2020-05-08T14:03:57Z
attribute	NC_GLOBAL	date_modified	String	2020-07-08T20:29:20Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.26008/1912/bco-dmo.810923.1
attribute	NC_GLOBAL	infoUrl	String	https://www.bco-dmo.org/dataset/810923
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	Gas Chromatograph
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	810927
attribute	NC_GLOBAL	instruments_0_description	String	Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)
attribute	NC_GLOBAL	instruments_0_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/LAB02/
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Gas Chromatograph
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	661
attribute	NC_GLOBAL	instruments_0_supplied_name	String	Gas Chromatograph (GC) Hewlett Packard 5890
attribute	NC_GLOBAL	keywords	String	after, bco, bco-dmo, before, biological, chemical, cleaning, core, Core_Exterior_After_Cleaning, Core_Exterior_Before_Cleaning, Core_Interior, data, dataset, dmo, drilling, Drilling_Fluid, erddap, exterior, fluid, interior, management, oceanography, office, preliminary, replicate, sample, tracer
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/810923/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/810923
attribute	NC_GLOBAL	param_mapping	String	{'810923': {}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/810923/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	WHOI
attribute	NC_GLOBAL	people_0_person_name	String	Virginia P. Edgcomb
attribute	NC_GLOBAL	people_0_person_nid	String	51284
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
attribute	NC_GLOBAL	people_1_person_name	String	Virginia P. Edgcomb
attribute	NC_GLOBAL	people_1_person_nid	String	51284
attribute	NC_GLOBAL	people_1_role	String	Contact
attribute	NC_GLOBAL	people_1_role_type	String	related
attribute	NC_GLOBAL	people_2_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_2_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_2_person_name	String	Karen Soenen
attribute	NC_GLOBAL	people_2_person_nid	String	748773
attribute	NC_GLOBAL	people_2_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_2_role_type	String	related
attribute	NC_GLOBAL	project	String	Subseafloor Lower Crust Microbiology
attribute	NC_GLOBAL	projects_0_acronym	String	Subseafloor Lower Crust Microbiology
attribute	NC_GLOBAL	projects_0_description	String	NSF abstract: The lower ocean crust has remained largely unexplored and represents one of the last frontiers for biological exploration on Earth. Preliminary data indicate an active subsurface biosphere in samples of the lower oceanic crust collected from Atlantis Bank in the SW Indian Ocean as deep as 790 m below the seafloor. Even if life exists in only a fraction of the habitable volume where temperatures permit and fluid flow can deliver carbon and energy sources, an active lower oceanic crust biosphere would have implications for deep carbon budgets and yield insights into microbiota that may have existed on early Earth. This is all of great interest to other research disciplines, educators, and students alike. A K-12 education program will capitalize on groundwork laid by outreach collaborator, A. Martinez, a 7th grade teacher in Eagle Pass, TX, who sailed as outreach expert on Drilling Expedition 360. Martinez works at a Title 1 school with ~98% Hispanic and ~2% Native American students and a high number of English Language Learners and migrants. Annual school visits occur during which the project investigators present hands on-activities introducing students to microbiology, and talks on marine microbiology, the project, and how to pursue science related careers. In addition, monthly Skype meetings with students and PIs update them on project progress. Students travel to the University of Texas Marine Science Institute annually, where they get a campus tour and a 3-hour cruise on the R/V Katy, during which they learn about and help with different oceanographic sampling approaches. The project partially supports two graduate students, a Woods Hole undergraduate summer student, the participation of multiple Texas A+M undergraduate students, and 3 principal investigators at two institutions, including one early career researcher who has not previously received NSF support of his own. Given the dearth of knowledge of the lower oceanic crust, this project is poised to transform our understanding of life in this vast environment. The project assesses metabolic functions within all three domains of life in this crustal biosphere, with a focus on nutrient cycling and evaluation of connections to other deep marine microbial habitats. The lower ocean crust represents a potentially vast biosphere whose microbial constituents and the biogeochemical cycles they mediate are likely linked to deep ocean processes through faulting and subsurface fluid flow. Atlantis Bank represents a tectonic window that exposes lower oceanic crust directly at the seafloor. This enables seafloor drilling and research on an environment that can transform our understanding of connections between the deep subseafloor biosphere and the rest of the ocean. Preliminary analysis of recovered rocks from Expedition 360 suggests the interaction of seawater with the lower oceanic crust creates varied geochemical conditions capable of supporting diverse microbial life by providing nutrients and chemical energy. This project is the first interdisciplinary investigation of the microbiology of all 3 domains of life in basement samples that combines diversity and "meta-omics" analyses, analysis of nutrient addition experiments, high-throughput culturing and physiological analyses of isolates, including evaluation of their ability to utilize specific carbon sources, Raman spectroscopy, and lipid biomarker analyses. Comparative genomics are used to compare genes and pathways relevant to carbon cycling in these samples to data from published studies of other deep-sea environments. The collected samples present a rare and time-sensitive opportunity to gain detailed insights into microbial life, available carbon and energy sources for this life, and of dispersal of microbiota and connections in biogeochemical processes between the lower oceanic crust and the overlying aphotic water column. About the study area: The International Ocean Discovery Program (IODP) Expedition 360 explored the lower crust at Atlantis Bank, a 12 Ma oceanic core complex on the ultraslow-spreading SW Indian Ridge. This oceanic core complex represents a tectonic window that exposes lower oceanic crust and mantle directly at the seafloor, and the expedition provided an unprecedented opportunity to access this habitat in the Indian Ocean.
attribute	NC_GLOBAL	projects_0_end_date	String	2020-01
attribute	NC_GLOBAL	projects_0_geolocation	String	SW Indian Ridge, Indian Ocean
attribute	NC_GLOBAL	projects_0_name	String	Collaborative Research: Delineating The Microbial Diversity and Cross-domain Interactions in The Uncharted Subseafloor Lower Crust Using Meta-omics and Culturing Approaches
attribute	NC_GLOBAL	projects_0_project_nid	String	709556
attribute	NC_GLOBAL	projects_0_start_date	String	2017-02
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	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Supplementary Table 2: Drill fluid contamination testing. GC mass spectrometry measurements of concentrations of the tracers PFMD and PFMC in drilling fluid and sample materials.
attribute	NC_GLOBAL	title	String	Supplementary Table 2: Drill fluid contamination testiFMC in drilling. GC mass spectrometry measurements of concentrations of the tracers PFMD and Png fluid and sample materials
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.5
variable	Tracer		String
attribute	Tracer	bcodmo_name	String	sample_descrip
attribute	Tracer	description	String	PFMB or PMCH tracer
attribute	Tracer	long_name	String	Tracer
attribute	Tracer	units	String	unitless
variable	Sample		String
attribute	Sample	bcodmo_name	String	sample
attribute	Sample	description	String	Sample ID
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	Replicate		String
attribute	Replicate	bcodmo_name	String	replicate
attribute	Replicate	description	String	Replicate number
attribute	Replicate	long_name	String	Replicate
attribute	Replicate	units	String	unitless
variable	Drilling_Fluid		String
attribute	Drilling_Fluid	bcodmo_name	String	unknown
attribute	Drilling_Fluid	description	String	Tracer concentration in drilling fluid
attribute	Drilling_Fluid	long_name	String	Drilling Fluid
attribute	Drilling_Fluid	units	String	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used
variable	Core_Exterior_Before_Cleaning		String
attribute	Core_Exterior_Before_Cleaning	bcodmo_name	String	unknown
attribute	Core_Exterior_Before_Cleaning	description	String	Tracer concentration on core exterior before cleaning
attribute	Core_Exterior_Before_Cleaning	long_name	String	Core Exterior Before Cleaning
attribute	Core_Exterior_Before_Cleaning	units	String	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used
variable	Core_Exterior_After_Cleaning		String
attribute	Core_Exterior_After_Cleaning	bcodmo_name	String	unknown
attribute	Core_Exterior_After_Cleaning	description	String	Tracer concentration on core exterior after cleaning
attribute	Core_Exterior_After_Cleaning	long_name	String	Core Exterior After Cleaning
attribute	Core_Exterior_After_Cleaning	units	String	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used
variable	Core_Interior		String
attribute	Core_Interior	bcodmo_name	String	unknown
attribute	Core_Interior	description	String	Tracer concentration on core
attribute	Core_Interior	long_name	String	Core Interior
attribute	Core_Interior	units	String	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used

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.