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Based on the presence of mantle xenocrysts, the high concentration of incompatible elements, the spatial and chem-ical affinity with other ocean island basalts from the area, and the relative age of the basalt (overlain by late Campanian sediments), it is suggested that Maud Rise was probably generated by hot-spot activity, possible during a ridge crest jump prior to 84 Ma (anomaly 34 time).
This story is not about glacial ice.
The ice melt and sliding of glaciers has been linked to volcanic activity at the south pole.
Sea levels are not dropping.
Anyway, enjoy the approaching ice age and if you have beach front property you're going to get some extra property as sea levels continue to drop.
"Most global ocean observations acquire measurements in the open ocean or in the top layers of the water, while our research shows that important mixing processes may be occurring in the deep ocean in thin layers over sloping topography," says senior author Andrew Thompson, professor of environmental science and engineering at Caltech.
Thompson and his colleagues deployed two autonomous underwater drones, or "gliders," for a period of eight months over the course of a year and a half in the Southern Ocean, which encircles Antarctica. The team concentrated on the region around Drake Passage, the 1,000-kilometer-wide waterway between Antarctica and South America.
The gliders were able to reach depths of 1,000 meters—nearly scraping the bottom at times. They carry instruments to measure temperature, salinity, the quantity of various nutrients like nitrogen and iron, and other variables. When the gliders come to the surface, they regularly relay this data back to Thompson and his colleagues. In this way, they were able to document strong mixing occurring in thin layers in the waters near the "edges" of the coastline, where ocean currents rub up against the rising continental mass of Antarctica.
"There is growing evidence that topography plays a bigger role in oceanographic mixing than we had previously suspected," says lead author Xiaozhou Ruan, a Caltech graduate student. "While this boundary region represents a small fraction of the ocean, the interaction between water and continental topography plays an outsized role in mixing."