Current Survey Details
Survey Name: Deep Structure of Porcupine Ridge and Rockall Plateau Margins (05/05/2021 to 30/05/2021)
Chief Scientist: Dr Steve Jones (Dublin Institute for Advanced Studies (DIAS) (Geophysics section))
Survey Details: DATA ACQUSITION OBJECTIVES
Whole-crustal seismic images of
+ Rockall Plateau passive margin,
+ Porcupine Ridge passive margin,
+ Porcupine Abyssal Plain,
all within Irish sovereign territory, as well as the first ever whole-crustal images of
+ Erriador Seamount,
+ East Thulean Rise,
immediately adjacent to Irish territory. survey will acquire the first modern OBS profiles across the hyper-extended continental crust within
+ Porcupine Seabight.
We will provide multi-disciplinary training for masters and PhD level students, in techniques of controlled source seismology (OBS and MCS), physical oceanography and marine mammal observing, and in research areas of mantle processes, tectonic processes, sedimentary processes and physical oceanographic processes. Pre-cruise training supported by Eurofleets+ and SMART.
1. Deep seismic imaging programme of Porcupine Ridge and Rockall Plateau continental margins.
2. Obtain continuous mantle temperature history from Late Cretaceous to Eocenes from OBS profiles over oceanic crust.
3. Test models for initiation of the North Atlantic Igneous Province (NAIP).
4. Test whether the NAIP alone drove the Paleocene/Eocene Thermal Maximum global warming event.
5. Explain temporal transition from magma-poor to magma-rich passive margins in the North Atlantic.
6. Image continental rifting and hyper-extension mode at Porcupine Basin, and continental break-up mode Porcupine Ridge and Rockall Plateau margins.
7. Determine how palaeogeography and sediment supply systems of Porcupine and Rockall Basins evolved through Cretaceous-Eocene based on O2 result.
8. Infer Cretaceous-Cenozoic deep-water circulation histories from MCS seismic images of contourite sediment drifts.
Survey Name: INFOMAR (06/05/2021 to 04/06/2021)
Chief Scientist: Mr Kevin Sheehan (Marine Institute)
Survey Details: Seabed mapping