Jurassic Magnetism - High resolution surveys - 2014 Cruise
Our most recent expedition on the new research icebreaker Sikuliaq (SKQ201402S) to study the marine Jurassic magnetic signal in 2014/2015 was with Co-PIs Masako Tominaga (Texas A&M Univ.) and Will Sager (U. Houston). We used the autonomous underwater vehicle AUV Sentry and a deeptow towed magnetic sled with the objective of surveying the Pacific Hawaiian magnetic record to compare with our previous work in the Japanese lineations and the previous 2011 cruise to the Hawaiian lineations. The AUV sentry worked flawlessly and collected almost 600 km of near-bottom, high resolution magnetic field data. As part of this 2014 marine survey we also had undergraduates out on the research vessel and an onshore outreach component.
Map of the survey region in the western Pacific.
Link to 2014 Cruise Documents
- NSF proposal: Tominaga, Tivey, and Sager, A High-Resolution Deep-AUV Magnetic Survey of the Hawaiian Jurassic Basin OCE-1233000
- Link to 2014 SKQ201402S cruise report
Published Materials to Date
Tominaga, M., M.A. Tivey, and W.W. Sager, A New Middle to Late Jurassic Geomagnetic Polarity Time Scale (GPTS) from a multiscale marine magnetic anomaly survey of the Pacific Jurassic Quiet Zone, Jour. Geophys. Res.,126(3), doi.org/10.1029/2020JB021136, 2021.
Tominaga, M., M.A. Tivey, and W.W. Sager, A New Geomagnetic Polarity Time Scale Model for Middle Jurassic to Early Cretaceous, AGU Fall Meeting, Abstract GP44A-08, 2019.
Tominaga, M., M. Tivey, and W. Sager, Toward establishing a definitive Mid Jurassic to Early Cretaceous (M-series) Geomagnetic Polarity Reversal Time Scale through unraveling the nature of Jurassic Quiet Zone, AGU Fall Meeting, Abstract GP42A-04, 2017.
Tominaga, M., M. Tivey, and W. Sager, Revising (Re-defining?) the Jurassic Magnetic Quiet Zone, AGU Fall Meeting, Abstract DI13A-2350, 2016.
Tominaga, M., M.A. Tivey, and W.W. Sager, Nature of the Jurassic Magnetic Quiet Zone, Geophys. Res. Lett., 42, 8367-8372, doi:10.1002/2015GL065394, 2015.
Tominaga, M., M.A. Tivey, and W.W. Sager, Nature of the Jurassic Magnetic Quiet Zone revealed by sea surface, mid-water, and near source magnetic sensor data in the western Pacific, AGU Fall Meeting Abstract GP23B-1310, 2015.
Feng, H.S., D. Lizarralde, L.A. Hart, M. Tominaga, M.A. Tivey and S.A. Swift, Extent and impact of Cretaceous magmatism on the formation and evolution of Jurassic oceanic crust in the western Pacific, AGU Fall Meeting Abstract V21A-3016, 2015.
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