Raw EK80 echosounder data (narrowband and broadband) and lowered WBAT data collected during RV Sarmiento de Gamboa cruise 'Sustainable Management of Mesopelagic Resources' (SUMMER) in 2020 to the Mediterranean


These data consist of both underway and station echosounder observations collected during the 2020 SUMMER (Sustainable Management of Mesopelagic Resources) Mediterranean cruise (30 September 2020 to 18 October 2020) on the RV Sarmiento de Gamboa. Narrowband (18, 38, 70, 120, 200 kHz) underway acoustic data were collected continuously using hull-mounted Simrad EK80 echosounders. The recording depths for the 5 frequencies were 1000, 1000, 750, 500, and 200 m respectively. Calibrations were carried out on the 1st of October 2020 using a 33 mm tungsten sphere,and the calibration results were applied to the instruments. During the survey, a Simrad wideband autonomous receiver (WBAT) was deployed down to a depth of 500 m whilst on station. In total, 31 drops were carried out at 5 stations. Four transducers (central frequencies were 45, 120, 200, 333 kHz) were operated using the WBAT in frequency modulated (FM) mode (bandwidth ranging from 45 to 445 kHz). The WBAT calibration data were collected using a 33 mm tungsten sphere. During the deployment of the WBAT, the hull-mounted EK80 was switched to FM mode to record broadband measurements. Raw power (W), number of transducer segments and transceiver impedance (Ohm) were stored in raw proprietary Simrad format (.raw, .idx).

DOI https://doi.org/10.1594/PANGAEA.938719
Related Identifier IsDocumentedBy https://doi.org/10.20351/29SG20200929
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.938719
Creator Yang, Yang ORCID logo; Proud, Roland ORCID logo; Castellón, Arturo; Sabatés, Ana; Olivar, M Pilar ORCID logo; Brierley, Andrew S ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference Horizon 2020 https://doi.org/10.13039/501100007601 Crossref Funder ID 817806 https://doi.org/10.3030/817806 Sustainable management of mesopelagic resources
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 3 datasets
Discipline Acoustics; Engineering Sciences; Mechanical and industrial Engineering; Mechanics and Constructive Mechanical Engineering
Spatial Coverage (-9.830W, 35.880S, 3.290E, 42.241N)
Temporal Coverage Begin 2020-09-30T07:25:16Z
Temporal Coverage End 2020-10-19T09:08:41Z