REH200901: FV Rehua Micronekton and Acoustic Data from the Tasman Sea, June 2009

FV Rehua collected biological and acoustic data during a five-day transit from New Zealand to Tasmania in June 2009. The dataset likely contains micronekton samples from a MIDOC net system, acoustic reflectivity logs from a 38 kHz echosounder, and concurrent optical-acoustic measurements from an Acoustic-Optical System. The voyage was chartered by CSIRO Marine and Atmospheric Research.

Use Cases

• Analyze micronekton community structure based on stratified sampling from 1000 m to the surface
• Map acoustic reflectivity of the Tasman Sea basin based on 38 kHz echosounder data logged during the voyage
• Correlate acoustic signatures with optical images of individual biota based on Acoustic-Optical System deployments

Strengths

• Data collection involved three complementary instruments: a MIDOC net, a 38 kHz echosounder, and an Acoustic-Optical System
• Sampling was structured into day/night experiments across eight three-hour deployments
• The voyage provides a transect across the Tasman Sea from Nelson, NZ to Devonport, Australia

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data may reflect geographic and temporal bias inherent to a single five-day voyage in June 2009

Provenance

Source

CSIRO Marlin Data Catalogue

Collection Method

Samples collected with a MIDOC net fitted to commercial trawl nets, acoustic data logged from a vessel's 38 kHz Simrad ES60 echosounder, and an Acoustic-Optical System deployed on the net.

Time Range

June 17, 2009 to June 22, 2009

Freshness

Last updated 2026-04-26 16:22:32.044023; freshness should be verified

Geography

Tasman Sea, transit from Nelson, New Zealand to Devonport, Tasmania, Australia