Which seas did Fridtjof Nansen explore during his oceanographic expeditions?

Fridtjof Nansen conducted extensive oceanographic research throughout his career, building upon his earlier fame as an Arctic explorer. During his dedicated oceanographic expeditions between 1900 and 1917, he explored several key regions:

• North Atlantic: Nansen participated in cruises through the northeastern North Atlantic, including a 1914 expedition to the Azores.1
• Norwegian Sea: In 1900, he joined the Michael Sars for a research cruise in these waters.1
• Barents and Kara Seas: In 1913, Nansen traveled through both the Barents Sea and the Kara Sea while en route to the Yenisey River.1
• Spitsbergen Waters: He visited these waters in 1912 aboard his own yacht, the Veslemoy.1

These voyages were instrumental in his contributions to physical oceanography, including his work on wind-driven currents and the formation of deep- and bottom-water.1