Blue skies and cloud cover on Expedition 390 Knowledge about oceans on other worlds starts with questions and answers about our own The Transect (Video) Why are Expeditions 390 & 393 on a transect of the South Atlantic Ocean? Find out in this sixth video in the Exp 390 Story Series! https://joidesresolution.org/wp-content/uploads/2022/05/Video-6-The-Transect_1.mp4 drillingEXP390Exp393Mid-Atlantic Ridgeseafloor spreading