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Geomagnetic reversal: Understanding ancient flips and flops in Earth's polarity

undergraduate student acqu with a gravitometer in a port

Before leaving port, an undergraduate student acquires important control data (on-shore gravimetrics) using a gravitometer.

Credit: Aric Velbel, Jurassic Magnetism


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Masako Tominaga  gives her first watchstanding tutorial to two research team members.

A 24/7 research cruise dictates "watch-standing," meaning people are constantly involved in monitoring the research that hopefully continues at an uninterrupted pace during the cruise. Here, Masako Tominaga gives her first watchstanding tutorial to two research team members.

Credit: Aric Velbel, Jurassic Magnetism


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R/V Sikuliaq fueling up in a port before its research cruise in the western Pacific.

Before departing Honolulu Harbor, the research team first needs to visit the fueling station. This NSF-funded research team will take geomagnetic measurements with three magnetometers, including one on an autonomous underwater vehicle (AUV).

Credit: Aric Velbel, Jurassic Magnetism


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