ERDDAP > info > bcodmo_dataset_715512

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	Acoustic backscatter from sites in McMurdo Sound from 2014-2015 (McMurdo Predator Prey project)		I   M	background			BCO-DMO	bcodmo_dataset_715512

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	""
attribute	NC_GLOBAL	awards_0_award_nid	String	665130
attribute	NC_GLOBAL	awards_0_award_number	String	PLR-0944747
attribute	NC_GLOBAL	awards_0_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0944747
attribute	NC_GLOBAL	awards_0_funder_name	String	NSF Division of Polar Programs
attribute	NC_GLOBAL	awards_0_funding_acronym	String	NSF PLR
attribute	NC_GLOBAL	awards_0_funding_source_nid	String	490497
attribute	NC_GLOBAL	awards_0_program_manager	String	Dr Chris H. Fritsen
attribute	NC_GLOBAL	awards_0_program_manager_nid	String	50502
attribute	NC_GLOBAL	awards_1_award_nid	String	665135
attribute	NC_GLOBAL	awards_1_award_number	String	PLR-0944511
attribute	NC_GLOBAL	awards_1_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0944511
attribute	NC_GLOBAL	awards_1_funder_name	String	NSF Division of Polar Programs
attribute	NC_GLOBAL	awards_1_funding_acronym	String	NSF PLR
attribute	NC_GLOBAL	awards_1_funding_source_nid	String	490497
attribute	NC_GLOBAL	awards_1_program_manager	String	Dr Chris H. Fritsen
attribute	NC_GLOBAL	awards_1_program_manager_nid	String	50502
attribute	NC_GLOBAL	awards_2_award_nid	String	665138
attribute	NC_GLOBAL	awards_2_award_number	String	PLR-0944694
attribute	NC_GLOBAL	awards_2_data_url	String	http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=0944694
attribute	NC_GLOBAL	awards_2_funder_name	String	NSF Division of Polar Programs
attribute	NC_GLOBAL	awards_2_funding_acronym	String	NSF PLR
attribute	NC_GLOBAL	awards_2_funding_source_nid	String	490497
attribute	NC_GLOBAL	awards_2_program_manager	String	Dr Chris H. Fritsen
attribute	NC_GLOBAL	awards_2_program_manager_nid	String	50502
attribute	NC_GLOBAL	cdm_data_type	String	Other
attribute	NC_GLOBAL	comment	String	Mean acoustic backscatter by site from McMurdo Sound. PI: Kendra Daly Co-PI: Stacy Kim Version: 2018-02-21
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	2017-09-25T14:44:26Z
attribute	NC_GLOBAL	date_modified	String	2018-03-19T18:22:41Z
attribute	NC_GLOBAL	defaultDataQuery	String	&time<now
attribute	NC_GLOBAL	doi	String	10.1575/1912/bco-dmo.731147
attribute	NC_GLOBAL	Easternmost_Easting	double	166.3348293
attribute	NC_GLOBAL	geospatial_lat_max	double	-77.5508
attribute	NC_GLOBAL	geospatial_lat_min	double	-77.70318638
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	166.3348293
attribute	NC_GLOBAL	geospatial_lon_min	double	165.0610853
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	geospatial_vertical_max	double	231.6565411
attribute	NC_GLOBAL	geospatial_vertical_min	double	7.34392257
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/715512
attribute	NC_GLOBAL	institution	String	BCO-DMO
attribute	NC_GLOBAL	instruments_0_acronym	String	ROV
attribute	NC_GLOBAL	instruments_0_dataset_instrument_description	String	SCINI ROV (https://bitbucket.org/scinirov/scini/wiki/Home)
attribute	NC_GLOBAL	instruments_0_dataset_instrument_nid	String	727522
attribute	NC_GLOBAL	instruments_0_description	String	Remotely operated underwater vehicles (ROVs) are unoccupied, highly maneuverable underwater robots operated by a person aboard a surface vessel. They are linked to the ship by a group of cables that carry electrical signals back and forth between the operator and the vehicle. Most are equipped with at least a video camera and lights. Additional equipment is commonly added to expand the vehicle’s capabilities. These may include a still camera, a manipulator or cutting arm, water samplers, and instruments that measure water clarity, light penetration, and temperature. More information.
attribute	NC_GLOBAL	instruments_0_instrument_name	String	Remotely Operated Vehicle
attribute	NC_GLOBAL	instruments_0_instrument_nid	String	445
attribute	NC_GLOBAL	instruments_0_supplied_name	String	SCINI ROV
attribute	NC_GLOBAL	instruments_1_acronym	String	BioSonics DT-X Echosounder
attribute	NC_GLOBAL	instruments_1_dataset_instrument_description	String	Biosonics, Inc. DT-X echosounder with 120 kHz split beam transducer
attribute	NC_GLOBAL	instruments_1_dataset_instrument_nid	String	716064
attribute	NC_GLOBAL	instruments_1_description	String	The BioSonics DT-X Digital Scientific Echosounder is available in single or spilt beam configuration. The resultant data set comprises 38 and 120 kHz split beam data. The DT-X Digital Scientific Echosounder is used for stock assessment, biomass estimates, and habitat mapping. DT-X digital transducers are available in a range of frequencies (38, 70, 120, 200, and 420 kHz) and beam patterns in split beam or single beam. Up to 5 transducers can be mulltiplexed for simultaneous data collection in any combination of frequencies and transducer orientations. The BioSonics split beam echosounder data can be analyzed for fish quantity, individual sizes, direction of travel through the acoustic beam. Data analysis is done using BioSonics, Echoview, or Sonar4/5-Pro software (and other options are available). Additional information is available from: BioSonics DT-X Digital Echosounder (http://www.biosonicsinc.com/product-overview.asp), BioSonics (http://www.biosonicsinc.com), Echoview (http://www.echoview.com/), and Sonar4/5-Pro (http://tid.uio.no/~hbalk/sonar4_5/index.htm).
attribute	NC_GLOBAL	instruments_1_instrument_external_identifier	String	https://vocab.nerc.ac.uk/collection/L05/current/FFES/
attribute	NC_GLOBAL	instruments_1_instrument_name	String	BioSonics DT-X Digital Scientific Echosounder
attribute	NC_GLOBAL	instruments_1_instrument_nid	String	646
attribute	NC_GLOBAL	instruments_1_supplied_name	String	Biosonics, Inc. DT-X echosounder
attribute	NC_GLOBAL	keywords	String	bco, bco-dmo, biological, chemical, data, dataset, datetime, depth, depth_mean, dmo, effort, erddap, group, latitude, linear, longitude, management, mean, oceanography, office, preliminary, site, sitenum, sum, sv_linear_sum, sv_mean, sv_mean_effort, time
attribute	NC_GLOBAL	license	String	https://www.bco-dmo.org/dataset/715512/license
attribute	NC_GLOBAL	metadata_source	String	https://www.bco-dmo.org/api/dataset/715512
attribute	NC_GLOBAL	Northernmost_Northing	double	-77.5508
attribute	NC_GLOBAL	param_mapping	String	{'715512': {'lat': 'flag - latitude', 'depth_mean': 'master - depth', 'lon': 'flag - longitude'}}
attribute	NC_GLOBAL	parameter_source	String	https://www.bco-dmo.org/mapserver/dataset/715512/parameters
attribute	NC_GLOBAL	people_0_affiliation	String	University of South Florida
attribute	NC_GLOBAL	people_0_affiliation_acronym	String	USF
attribute	NC_GLOBAL	people_0_person_name	String	Kendra L. Daly
attribute	NC_GLOBAL	people_0_person_nid	String	50505
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	H.T. Harvey & Associates
attribute	NC_GLOBAL	people_1_person_name	String	Dr David G. Ainley
attribute	NC_GLOBAL	people_1_person_nid	String	50491
attribute	NC_GLOBAL	people_1_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_1_role_type	String	originator
attribute	NC_GLOBAL	people_2_affiliation	String	Point Blue Conservation Science
attribute	NC_GLOBAL	people_2_person_name	String	Dr Grant Ballard
attribute	NC_GLOBAL	people_2_person_nid	String	566872
attribute	NC_GLOBAL	people_2_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_2_role_type	String	originator
attribute	NC_GLOBAL	people_3_affiliation	String	Moss Landing Marine Laboratories
attribute	NC_GLOBAL	people_3_affiliation_acronym	String	MLML
attribute	NC_GLOBAL	people_3_person_name	String	Dr Stacy Kim
attribute	NC_GLOBAL	people_3_person_nid	String	51714
attribute	NC_GLOBAL	people_3_role	String	Co-Principal Investigator
attribute	NC_GLOBAL	people_3_role_type	String	originator
attribute	NC_GLOBAL	people_4_affiliation	String	University of South Florida
attribute	NC_GLOBAL	people_4_affiliation_acronym	String	USF
attribute	NC_GLOBAL	people_4_person_name	String	Benjamin Saenz
attribute	NC_GLOBAL	people_4_person_nid	String	715795
attribute	NC_GLOBAL	people_4_role	String	Contact
attribute	NC_GLOBAL	people_4_role_type	String	related
attribute	NC_GLOBAL	people_5_affiliation	String	Woods Hole Oceanographic Institution
attribute	NC_GLOBAL	people_5_affiliation_acronym	String	WHOI BCO-DMO
attribute	NC_GLOBAL	people_5_person_name	String	Mathew Biddle
attribute	NC_GLOBAL	people_5_person_nid	String	708682
attribute	NC_GLOBAL	people_5_role	String	BCO-DMO Data Manager
attribute	NC_GLOBAL	people_5_role_type	String	related
attribute	NC_GLOBAL	project	String	McMurdo Predator Prey
attribute	NC_GLOBAL	projects_0_acronym	String	McMurdo Predator Prey
attribute	NC_GLOBAL	projects_0_description	String	Extracted from the NSF award abstract: The research project investigates the importance of top down forcing on pelagic food webs. The relatively pristine Ross Sea includes large populations of upper-level predators such as minke and killer whales, Adélie and Emperor penguins, and Antarctic toothfish. This project focuses on food web interactions of Adélie penguins, minke whales, and the fish-eating Ross Sea killer whales, all of which exert foraging pressure on their main prey, crystal krill (Euphausia cyrstallorophias) and silver fish (Pleuragramma antarcticum) in McMurdo Sound. The investigators used a video- and acoustic-capable ROV, and standard biological and environmental sensors to quantify the abundance and distribution of phytoplankton, sea ice biota, prey, and relevant habitat data.  The sampling area included 37 stations across an 30 x 15 km section of McMurdo Sound, stratified by distance from the ice edge as a proxy for air-breathing predator access. This study will be among the first to assess top-down forcing in the Ross Sea ecosystem and will form the basis for multidisciplinary studies in the future. Map sampling stations
attribute	NC_GLOBAL	projects_0_end_date	String	2016-11
attribute	NC_GLOBAL	projects_0_geolocation	String	McMurdo Sound, Antarctica
attribute	NC_GLOBAL	projects_0_name	String	Food web dynamics in an intact ecosystem: the role of top predators in McMurdo Sound
attribute	NC_GLOBAL	projects_0_project_nid	String	665131
attribute	NC_GLOBAL	projects_0_project_website	String	https://scini-penguin.mlml.calstate.edu/pauls-wordpress-test-site/
attribute	NC_GLOBAL	projects_0_start_date	String	2011-06
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	-77.70318638
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v55
attribute	NC_GLOBAL	summary	String	Krill and fish were sampled acoustically and visually beneath the fast ice using the tethered SCINI ROV, which was deployed and operated through a 25 cm diameter hole drilled through the sea ice. SCINI contained cameras and thrusters, and towed a sensor package consisting of a WET Labs fluorometer (ECO-AFL/FL) and a single-beam Biosonics 120 kHz DT-X echosounder. Visual targets were identified to the lowest taxon possible; these observations were used primarily to verify classification of acoustic signals. The echosounder operated at a nominal ping rate of 1 ping s-1; however, this rate was occasionally adjusted if false bottom signals were observed. The general profile of a dive included a surface transect of ~300 m horizontal distance, where the acoustic transducer faced downward, and also a dive to ~120 m if conditions allowed. Echogram data were saved to a depth of 500 m, and background noise was removed. Given the effective range of the transducer of approximately 100 m (resolving -80 dB targets), surveys characterized the upper 200 m of the water column.
attribute	NC_GLOBAL	title	String	Acoustic backscatter from sites in McMurdo Sound from 2014-2015 (McMurdo Predator Prey project)
attribute	NC_GLOBAL	version	String	1
attribute	NC_GLOBAL	Westernmost_Easting	double	165.0610853
attribute	NC_GLOBAL	xml_source	String	osprey2erddap.update_xml() v1.3
variable	site		String
attribute	site	bcodmo_name	String	site_descrip
attribute	site	description	String	site name string
attribute	site	long_name	String	Site
attribute	site	units	String	unitless
variable	sitenum		float
attribute	sitenum	_FillValue	float	NaN
attribute	sitenum	actual_range	float	9.0, 258.0
attribute	sitenum	bcodmo_name	String	site
attribute	sitenum	description	String	numerical representation of site
attribute	sitenum	long_name	String	Sitenum
attribute	sitenum	units	String	unitless
variable	datetime		String
attribute	datetime	bcodmo_name	String	date
attribute	datetime	description	String	date time of sampling; string with mm/dd/yyy hh:mm:ss
attribute	datetime	long_name	String	Datetime
attribute	datetime	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/
attribute	datetime	source_name	String	datetime
attribute	datetime	time_precision	String	1970-01-01T00:00:00Z
attribute	datetime	units	String	unitless
variable	Group		String
attribute	Group	bcodmo_name	String	sample_descrip
attribute	Group	description	String	classification of backscatter;Krill = Crystal krill; Silverfish= Antarctic silverfish; LargeFish = unknown large fish; WeakScatterers = unknown scatterers generally < -70 dB re 1 m-1
attribute	Group	long_name	String	Group
attribute	Group	units	String	unitless
variable	latitude		double
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	_FillValue	double	NaN
attribute	latitude	actual_range	double	-77.70318638, -77.5508
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 of sampling station (positive is north)
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	165.0610853, 166.3348293
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 of sampling station (positive is west)
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	dn		double
attribute	dn	_FillValue	double	NaN
attribute	dn	actual_range	double	735560.1655, 735605.0763
attribute	dn	bcodmo_name	String	unknown
attribute	dn	description	String	python matplotlib datenum; days since 0001-01-01 00:00:00 UTC
attribute	dn	long_name	String	DN
attribute	dn	units	String	days
variable	sv_linear_sum		double
attribute	sv_linear_sum	_FillValue	double	NaN
attribute	sv_linear_sum	actual_range	double	1.31E-7, 0.017623113
attribute	sv_linear_sum	bcodmo_name	String	beam_cp
attribute	sv_linear_sum	description	String	sum of linear acoustic volume backscatter
attribute	sv_linear_sum	long_name	String	Sv Linear Sum
attribute	sv_linear_sum	nerc_identifier	String	https://vocab.nerc.ac.uk/collection/P01/current/ATTNZZ01/
attribute	sv_linear_sum	units	String	m^-1
variable	n		int
attribute	n	_FillValue	int	2147483647
attribute	n	actual_range	int	14, 123498
attribute	n	bcodmo_name	String	unknown
attribute	n	description	String	number of classified volumes
attribute	n	long_name	String	N
attribute	n	units	String	unitless
variable	effort		int
attribute	effort	_FillValue	int	2147483647
attribute	effort	actual_range	int	35133, 323949
attribute	effort	bcodmo_name	String	unknown
attribute	effort	description	String	number of total surveyed volumes
attribute	effort	long_name	String	Effort
attribute	effort	units	String	unitess
variable	sv_mean		double
attribute	sv_mean	_FillValue	double	NaN
attribute	sv_mean	actual_range	double	-90.84759626, -56.63791855
attribute	sv_mean	bcodmo_name	String	Acc_bksctr
attribute	sv_mean	description	String	mean volume backscatter of classified samples
attribute	sv_mean	long_name	String	Sv Mean
attribute	sv_mean	units	String	decibel at reference level 1 meter (dB re 1 m-1)
variable	depth		double
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	_FillValue	double	NaN
attribute	depth	actual_range	double	7.34392257, 231.6565411
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	mean depth of classified volume backscattering
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	sv_mean_effort		double
attribute	sv_mean_effort	_FillValue	double	NaN
attribute	sv_mean_effort	actual_range	double	-122.2160813, -70.11085932
attribute	sv_mean_effort	bcodmo_name	String	Acc_bksctr
attribute	sv_mean_effort	description	String	mean volume backscatter of survey station
attribute	sv_mean_effort	long_name	String	Sv Mean Effort
attribute	sv_mean_effort	units	String	decibel at reference level 1 meter (dB re 1 m-1)

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.