12.5 kHz raw echosounder data collected on the Antarctic Circumnavigation Expedition during the austral summer of 2016/2017

These data consist of raw echosounder observations collected during ACE (Leg1-Leg3) using an EK80 WBT operating at 12.5 kHz. The instrument was calibrated at South Georgia during the expedition (Leg 3) and corrections were applied prior to calculation of the volume backscattering strength (Sv). The signal-to-noise ratio (SNR) was analysed and was deemed very poor at depths greater than 1000 m. Therefore, only data collected between the transducer depth (8.4 m) and 1000 m were archived. Sv values within this depth range that had poor SNRs (<2) were deemed to be bad data and set to a value of NA. Observations were made using a pulse duration of 16.384 ms (c. 24 m) and are therefore not suitable for fine-scale studies (e.g. analysis of krill swarms). They are more suited to studies relating to large-scale biological features such as deep scattering layers.
 
Citation proposal
Proud, Roland (University of St Andrews) - Le Guen, Camille () - Fernandes, Paul () - Everson, Inigo () - Bernasconi, Matteo () - Lawrence, Joshua () - Brierley, Andrew () (2019) . 12.5 kHz raw echosounder data collected on the Antarctic Circumnavigation Expedition during the austral summer of 2016/2017. https://services.mspdata.eu:/geonetwork/srv/api/records/ddedf6f4-dc29-4a36-be2c-b7757cda9e82

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Date ( Publication )
2019-12-21
Identifier
ddedf6f4-dc29-4a36-be2c-b7757cda9e82
Credit
Swiss Polar Institute
Status
Completed

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  Author

  Author

  Author

  Author

  Author

  Author

Thèmes Sextant ( Theme )
  • /Human Activities/Oceanographical Cruises
GEMET - INSPIRE themes, version 1.0 ( Theme )
Mission Atlantic - BODC Parameters ( Theme )
  • /Biological oceanography/Other biological measurements , /Biological oceanography/Fish
Mission Atlantic - Data type (DMP) ( Theme )
  • Acoustic data
Mission Atlantic - Work Package ( Theme )
  • WP3 Pelagic Mapping
Mission Atlantic - Resources ( Theme )
  • Data
Access constraints
Restricted
Other constraints
This dataset forms part of a PhD thesis and will be made fully available when this thesis is published.
Spatial representation type
Grid
Metadata language
English
Character set
UTF8
Topic category
  • Oceans
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S
E
W


Geometric object type
Composite
OnLine resource
Publication  
OnLine resource
ZENODO data access  
Hierarchy level
Dataset

Metadata

File identifier
ddedf6f4-dc29-4a36-be2c-b7757cda9e82   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2021-12-09T15:28:42
Metadata standard name
ISO 19115:2003/19139 - SEXTANT
Metadata standard version
1.0

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https://sextant.ifremer.fr/eng  
 
 

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