Citation:

PANGAEA.923087

Name: Integrated daytime EK60 echosounder data from Malaspina-2010 cruise
Published: 2020-09-25
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Backscatter; Bioacoustics; Malaspina; mesopelagic

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Abstract:

Daytime acoustic data (nautical area scattering coefficients, in m2/nmi2) integrated over 2 m vertical bins, from 200 to 1000 m depth. Data in each “pixel” is the average of all cleaned and valid data recorded at that depth range, in a time period starting 8 hours before the start of a station (defined as start of the CTD cast) and ending 8 hours after the start of the station, subject to being in the period between 1 hour after local sunrise and 1 hour prior to local sunset (i.e. during local daytime hours, but removing crepuscular periods). The relatively long interval over which data was accepted around each station was chosen due to frequent occurrences of periods of unusable acoustic data. Note that the provided positions correspond to the fixed Malapina station at that date, not the start and end point of the data collection.

Keyword(s):

Backscatter; Bioacoustics; Malaspina; mesopelagic

Supplement to:

Irigoien, Xabier; Klevjer, Thor Aleksander; Martinez, Udane; Boyra, Guillermo; Røstad, Anders; Wittmann, Astrid; Duarte, Carlos Manuel; Kaartvedt, Stein; Brierley, Andrew S; Proud, Roland (2021): The Simrad EK60 echosounder dataset from the Malaspina circumnavigation. Scientific Data, 8(1), 259, https://doi.org/10.1038/s41597-021-01038-y

Related to:

Irigoien, Xabier; Klevjer, Thor Aleksander; Røstad, Anders; Martinez, Udane; Boyra, Guillermo; Acuña, José Luis; Bode, Antonio; Echevarría, Fidel; González-Gordillo, Juan Ignacio; Hernández-León, Santiago; Agustí, Susana; Aksnes, Dag Lorents; Duarte, Carlos Manuel; Kaartvedt, Stein (2014): Large mesopelagic fishes biomass and trophic efficiency in the open ocean. Nature Communications, 5(1), 3271, https://doi.org/10.1038/ncomms4271

Klevjer, Thor Aleksander; Irigoien, Xabier; Røstad, Anders; Fraile-Nuez, Eugenio; Benítez-Barrios, Verónica M; Kaartvedt, Stein (2016): Large scale patterns in vertical distribution and behaviour of mesopelagic scattering layers. Scientific Reports, 6(1), 19873, https://doi.org/10.1038/srep19873

Klevjer, Thor Aleksander; Martinez, Udane; Boyra, Guillermo; Røstad, Anders; Kaartvedt, Stein; Irigoien, Xabier (2021): Per station summaries of acoustic water column properties during MALASPINA-2010. PANGAEA, https://doi.org/10.1594/PANGAEA.926619

Martinez, Udane; Boyra, Guillermo; Irigoien, Xabier; Klevjer, Thor Aleksander; Røstad, Anders; Kaartvedt, Stein; Proud, Roland; Brierley, Andrew S (2020): Raw EK60 echosounder data (38 and 120 kHz) collected during the Malaspina 2010 Spanish Circumnavigation Expedition (14th December 2010, Cádiz - 14th July 2011, Cartagena). PANGAEA, https://doi.org/10.1594/PANGAEA.921760

Further details:

MacLennan, David N; Fernandes, Paul G; Dalen, John (2002): A consistent approach to definitions and symbols in fisheries acoustics. ICES Journal of Marine Science, 59(2), 365-369, https://doi.org/10.1006/jmsc.2001.1158

Project(s):

Malaspina circumnavigation expedition (MALASPINA-2010)

Sustainable Management of Mesopelagic Resources (SUMMER)

Funding:

Horizon 2020 (H2020), grant/award no. 817806 : Sustainable management of mesopelagic resources

Ministerio de Ciencia e Innovación (MICINN), grant/award no. CSD2008-00077: Circumnavigation expedition Malaspina 2010: Global Change and Exploration of Biodiversity of the Global Ocean

Coverage:

Median Latitude: -1.365574 * Median Longitude: -52.871685 * South-bound Latitude: -38.621333 * West-bound Longitude: -179.523667 * North-bound Latitude: 32.914333 * East-bound Longitude: 150.417333

Date/Time Start: 2010-12-23T00:00:00 * Date/Time End: 2011-07-10T00:00:00

Minimum DEPTH, water: 204 m * Maximum DEPTH, water: 1000 m

Event(s):

MALASPINA_LEG1_007-5 (MH009_007) * Latitude: 21.450167 * Longitude: -23.454500 * Date/Time: 2010-12-23T00:00:00 * Campaign: (29HE20101215) * Basis: * Method/Device:

MALASPINA_LEG1_008-5 (MH010_008) * Latitude: 20.261167 * Longitude: -24.251167 * Date/Time: 2010-12-24T00:00:00 * Campaign: (29HE20101215) * Basis: * Method/Device:

MALASPINA_LEG1_010-5 (MH012_010) * Latitude: 14.519667 * Longitude: -26.000333 * Date/Time: 2010-12-26T00:00:00 * Campaign: (29HE20101215) * Basis: * Method/Device:

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Klevjer, Thor Aleksander
2	Date/Time of event	Date/Time		Klevjer, Thor Aleksander
3	Latitude of event	Latitude		Klevjer, Thor Aleksander
4	Longitude of event	Longitude		Klevjer, Thor Aleksander
5	DEPTH, water	Depth water	m	Klevjer, Thor Aleksander		Geocode
6	Nautical area scattering coefficient, mean	NASC mean	m²/nmi²	Klevjer, Thor Aleksander	after MacLennan et al. (2002)

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

43045 data points

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