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.
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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 |
Simple
- Date ( Publication )
- 2019-12-21
- Identifier
- ddedf6f4-dc29-4a36-be2c-b7757cda9e82
- Credit
- Swiss Polar Institute
- Status
- Completed
Author
Author
Author
Author
Author
Author
Author
- Thèmes Sextant ( Theme )
-
- /Human Activities/Oceanographical Cruises
- GEMET - INSPIRE themes, version 1.0 ( Theme )
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- Mission Atlantic - BODC Parameters ( Theme )
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- /Biological oceanography/Other biological measurements , /Biological oceanography/Fish
- Mission Atlantic - Data type (DMP) ( Theme )
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- Acoustic data
- Mission Atlantic - Work Package ( Theme )
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- WP3 Pelagic Mapping
- Mission Atlantic - Resources ( Theme )
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- 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
N
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
Point of contact
- Website
- https://sextant.ifremer.fr/eng