Biological and acoustical data acquired during a Sound Scattering sampling operation at the end of PELGAS 2016 survey, from the 27/05/2016 to the 01/06/2016 Fields description: ********************* Acoustic data (file .mat, folder EI_1.5m_5ping_2kHz): ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Echo-Integrated (EI) broadband acoustic data acquired during the Sound Scattering sampling operation frequencies : frequencies band for each channel and each EI cells, in kHz (resolution of 2 kHz) integration_depth : depth of EI cells, in meter (from the echo-sounder, add 6 m to have the depth from the surface) latitude_ei : latitude of each echo-integration cells, in decimal degre latitude_for_ei : latitude of each ping before EI, in decimal degre longitude_ei : longitude of each echo-integration cell, in decimal degre longitude_for_ei : longitude of each ping before EI, in decimal degre speed_knt_ei : speed of the ship in echo-integration cells, in knots speed_knt_for_ei : speed of the ship in ping before EI, in knots Sv_ei : EI backscattering data for each channel and each EI cells, ... dimension 1 : cells, dimension 2 : integration depth, dimension 3 frequencies (only for broadband data, channel 3,4,5,6), in dB/m^-3 Time_for_ei : Time of each ping before EI, in serial date number* Time_Sv_ei : Time of each echo-integration cells, in serial date number* * A serial date number represents the whole and fractional number of days from a fixed, preset date (January 0, 0000) in the proleptic ISO calendar. https://www.mathworks.com/help/matlab/ref/datenum.html Biological_data.csv: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Number and size of the organisms catch during the Sound Scattering sampling operation Station : Station number code_species : Organisms codes names (see Species codes) L : Length of the organism, in meter N : Number of given organism of a given size in the sample of a given net Volume : Volume sampled by the net, in m^3 Fract : Sample fractionating (already taking account in the number of organism) depth_max : net maximum depth, in meter gear : net type (see gear_description.csv) sample_metadata.csv ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Metadata of all the net/trawl tow Station : Station number date : date and time of the beginning of the tow latitude : latitude of the beginning of the tow longitude : longitude of the beginning of the tow depth : seafloor tow name : tow name towtype : 1 => vertical, 2 => horizontal, 3 => oblique nettype : net type (see gear_description.csv) netmesh : mesh size in µm (see gear_description.csv) netsurf : area of the openning of the net, in m^2 zmax : max depth reach by the net zmin : depth min of reach by the net (only relevant for multinet tow) vol : sampled volume (m^3) latitude_end : latitude of the end of the tow longitude_end : longitude of the end of the tow net_duration : duration of the net tow, in min ship_speed_knots : mean speed of the ship during the tow (in knots) Gear_description.csv ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Used gears description gear : gear/net name Mesh (µm) : mesh size, in µm Shape : shape of the nets Opening dimension (m^2) : area of the openning of the net, in m^2 Sampling volume estimation : method to calculate the volume sampled by the gear Net tow type : how the gear is towed, based on (Wiebe et al., 2015) tow type nomenclature comment : comment Species codes: ********************* Code Scientific name ----------------------- AEQO-AEQ : Aequorea forskalea AMMO-TOB : Ammodytes tobianus Annelida_Polychaeta : Polychaeta spe ARGE-SPH : Argentina sphyraena Arthropoda_Crustacea : unidentified crustacean larvae AURE-AUR : Aurelia aurita BELO-BEO : Belone belone BERO-OVA : Beroe ovata CHRY-HYS : Chrysaora hysoscella CONG-CON : Conger conger CRYG-LIN : Crystallogobius linearis CYAN-LAM : Cyanea lamarckii Decapoda_zoea : decapoda spe larvae ECHI-DRU : Echiodon drummondii Eumalacostraca_Amphipoda: Amphipoda spe Eumalacostraca_Decapoda : Decapoda spe Eumalacostraca_Euphausiacea : Euphausiacea spe GADI-SPP : Gadidae larvae spe GELA-AUT : Pandeiidae spe Gnathostomata_Actinopterygii : unidentified fish larvae Hydroidolina_Siphonophorae : siphonophore Physonectae spe LARV-DIV : unidentified fish larvae Limacinidae_Limacina : Limacina spe Maxillopoda_Copepoda : Copepoda spe MB-CNIDA : unidentified cnidarian Metazoa_Chaetognatha : Chaetognatha spe MYCT-SPP : Maurolicus muelleri Oligostraca_Ostracoda : Ostracoda spe PLEB-PIL : Pleurobrachia pileus POLY-HEN : Polybius henslowii SALP-FUS : Salpa fusiformis SEPI-OLZ : Sepiola spe SIPH-ONO : siphonophore Physonectae spe SIPH-ONO-video : siphonophore Physonectae spe (observed on video) SOLE-SPP : Solea spe SOES-ZON : Soestia zonaria SYNG-ACU : Syngnathus acus Tunicata_Thaliacea : unidentified salps