Concept
acoustic_index_of_aggregation_in_sea_water
| URI | http://vocab.nerc.ac.uk/collection/P07/current/UM50UKPG/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Alternative Labels | |||
| Definition | Acoustic index of aggregation is the depth integral of squared volume backscattering coefficient divided by the squared area backscattering coefficient. Volume backscattering coefficient is the linear form of acoustic_volume_backscattering_strength_in_sea_water. Area backscattering coefficient is the integral of the volume backscattering coefficient over a defined distance. The parameter is computed to provide a value that represents the patchiness of biomass in the water column in the field of fisheries acoustics - the value is high when small areas are much denser than the rest of the distribution. The parameter is also the reciprocal of acoustic_equivalent_area_in_sea_water. For further details see Urmy et. al (2012) doi:10.1093/icesjms/fsr205 and Woillez et. al (2007) doi.org/10.1093/icesjms/fsm025. | ||
| Date | 2024-09-04T12:51:23 | ||
| Identifier | SDN:P07::UM50UKPG | ||
| Note | accepted | ||
| Has Current Version | 1 | ||
| version | 1 | ||
| Same As | CF | http://vocab.nerc.ac.uk/standard_name/acoustic_index_of_aggregation_in_sea_water/ | Mapping: 442695 |
| Related | P06:UPRM |
per metre | Mapping: 1856949 |
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