RV Investigator IN2019_V01 (ENRICH, GPc10)
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Investigator (096U) |
| Cruise identifier | IN2019_V01 (ENRICH, GPc10) |
| Cruise period | 2019-01-19 — 2019-03-04 |
| Status | Completed |
| Port of departure | Hobart, Australia |
| Port of return | Hobart, Australia |
| Purpose | Research |
| Objectives | Euphausiids and Nutrient Recycling In Cetacean Hotspots (ENRICH). The availability of Antarctic krill to large predators and their role in biogeochemical recycling in the Southern Ocean.
Objectives 1. Characterise the density, distribution and fine-scale 3D structure of Antarctic krill swarms using the latest active acoustic multibeam technology. 2. Compare the krill prey field in the vicinity and absence of a large predator by remotely detecting and tracking the location of Antarctic blue whale aggregations using novel passive acoustic methods. 3. Describe the behaviour of Antarctic blue whales on foraging grounds by investigating the relationships among vocalisations, density, movements and surface behaviour, and compare the local prey field around whales exhibiting different behaviours. 4. Conduct the first field study of the theory of iron fertilisation by whales and krill. |
| Chief scientist | Michael Double (Australian Antarctic Division) |
| Project | GEOTRACES -Trace elements and their isotopes in the water column |
| Cruise report |  (5.32 MB) |
| Ocean/sea areas | |
| General | Southern Ocean |
| Specific | South of 60°S, northward of the ice edge, between 140°E and 175°W. |
| Data held at BODC | |
| Discrete samples | |
| 18 |
